Toyota Prius Prime (2021 year). Manual in english — part 2

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2-1. Plug-in hybrid system

Plug-in hybrid system features

The illustration is an example for explanation and may differ from the
actual item.

Gasoline engine
Electric motor (traction motor)

The plug-in hybrid system is a system excellent in both econom-
ical efficiency of electric vehicles and practicality of hybrid vehi-
cles.

●

EV driving can be performed using electricity charged from an
external power source.

*

●

If the amount of electricity remaining in the hybrid battery (traction
battery) becomes low, the vehicle is automatically controlled in
such a way that it can be driven as a hybrid vehicle through the
joint use of the gasoline engine.

*

: The EV driving range will vary in accordance with conditions such as

vehicle speed, the amount of charge remaining in the hybrid battery
(traction battery) and the usage of the air conditioning system. The gaso-
line engine may also be used simultaneously in accordance with driving
conditions.

1
2

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2-1. Plug-in hybrid system

2

Plug-

in hybrid system

The plug-in hybrid system operates in the following modes.

The multi-information display can be used to check which mode the plug-in
hybrid system is currently being driven in. (



P. 220)

EV mode
When a sufficient amount of electricity is remaining after
charging

*

1

, EV driving is performed using electricity stored in the

hybrid battery (traction battery).

*

2

When in EV mode, the EV drive mode indicator illuminates.

*

1

: The amount of remaining charge can be checked on the multi-informa-

tion display etc. (



P. 231)

*

2

: Depending on the situation, EV driving may be canceled and both gaso-

line engine and electric motor are used. (



P. 95)

Plug-in hybrid system operation mode

1

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2-1. Plug-in hybrid system

EV auto mode (



P. 90)

When a sufficient amount of electricity for EV driving is remaining in
the hybrid battery (traction battery) after charging

*

, the operation

mode can be switched to EV auto mode.
Switching to EV auto mode make powerful driving possible by using
both the gasoline engine and electric motor in a driving condition
that requires large driving force, such as when passing a vehicle on
a highway or driving on a steep slope.

When in EV auto mode, the EV auto mode indicator illuminates.

*

: The amount of remaining charge can be checked on the multi-informa-

tion display etc. (



P. 231)

HV mode
When in HV mode, the vehicle is driven using both the gasoline
engine and electric motor (traction motor). (



P. 92)

●

If electricity needed for EV driving in EV mode or EV auto mode
is not remaining, the operation mode will be automatically
switched to HV mode.

●

The operation mode can be switched to HV mode at any timing
by operating the switch to keep electricity for EV driving etc.

*

(



P. 90). Switching to HV mode when driving on a highway or

when driving uphill is recommended in order to conserve battery
power.

When in HV mode, the EV drive mode indicator and EV auto mode indi-
cator turn off.

*

: The EV driving range may reduce even after switching to HV mode.

2

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Hybrid battery (traction battery) charge mode (



P. 91)

Electricity generated in the gasoline engine can be charged in the
hybrid battery (traction battery) by switching to the hybrid battery
(traction battery) charge mode when electricity needed for EV driv-
ing is not remaining.

*

●

The system may not be able to switch to the hybrid battery (trac-
tion battery) charge mode due to the state of the plug-in hybrid
system. (



P. 91)

●

Charging time differs depending on the driving state of the vehi-
cle when driving in hybrid battery (traction battery) charge mode.

When in the hybrid battery (traction battery) charge mode, the hybrid
battery charge mode indicator illuminates.

*

: When in the hybrid battery (traction battery) charge mode, the hybrid

battery can be charged while driving. However, the gasoline engine runs
to charge the battery and fuel consumption becomes higher compared
with driving in HV mode.

4

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2-1. Plug-in hybrid system

The plug-in hybrid system operation modes can be switched using the
switches.

If there is not enough charge remaining in the hybrid battery (traction bat-
tery) to allow EV driving, EV/EV auto mode will not be selectable.
The hybrid battery (traction battery) charge mode cannot be selected if the
hybrid battery (traction battery) is almost completely charged.

■

Switching the plug-in hybrid system operation modes

Press the EV/HV mode selection switch or EV auto mode switch to
change modes as the following table shows.

When in EV mode, the EV drive mode indicator illuminates.
When in EV auto mode, the EV auto mode indicator illuminates.
When in HV mode, the EV drive mode indicator and EV auto mode indi-
cator turn off.

*

: If there is not enough charge remaining in the hybrid battery (traction bat-

tery) to allow EV driving, EV/EV auto mode will not be selectable.

Plug-in hybrid system operation mode selection switches



EV/HV mode selection switch



EV auto mode switch

Current mode

Switch operated

EV mode

HV mode

EV auto mode

EV auto mode

HV mode

EV mode

HV mode

EV mode

*

EV auto mode

*

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■

Switching to the hybrid battery (traction battery) charge mode

Press and hold the switch.

Take your hand off the switch
once the hybrid battery charge
mode indicator starts to blink.
The hybrid battery charge mode
indicator illuminates when the
switch to hybrid battery (traction
battery) charge mode is com-
plete.
When the hybrid battery (traction battery) is fully charged

*

, the hybrid

battery (traction battery) charge mode is automatically canceled and the
operation mode will be switched to HV mode.
The hybrid battery (traction battery) charge mode will be canceled by
pressing EV/HV mode selection switch or EV auto mode switch.

*

: The maximum charge amount in the hybrid battery (traction battery)

charge mode is approximately 80% of the fully charged capacity for the
charging from an external power source.

■

If the plug-in hybrid system operation mode cannot be changed

In the following situations, the plug-in hybrid system operation mode cannot
be changed even if the EV/HV mode selection switch or EV auto mode switch
is pressed. (In this case, the warning message is displayed on the multi-infor-
mation display when the switch is pressed.)

●

When electricity needed for EV driving is not remaining (when in EV/EV
auto mode)

●

When the traction battery is almost completely charged (hybrid battery [trac-
tion battery] charge mode)

■

When switching from EV mode to another mode using the switch

When the power switch is turned off, operation mode switching is canceled
and the system returns to EV mode the next time the vehicle is started.

■

Hybrid battery (traction battery) charge mode

●

The following may occur to protect the system, etc.
• Cannot switch to hybrid battery (traction battery) charge mode or cannot

cancel it

• Gasoline engine does not start or stops even after switching to hybrid bat-

tery (traction battery) charge mode

●

If a load to the system is large, such as when the power consumption of the
air conditioning system is large or when the temperature of the engine cool-
ant is high, it may take longer time than usual to charge using the hybrid bat-
tery (traction battery) charge mode, or charging to the hybrid battery
(traction battery) may not be performed.

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■

When in EV/EV auto mode

In EV/EV auto mode, EV driving (driving using only the electric
motor)

*

is possible. However, depending on the situation, EV driv-

ing may be canceled and both gasoline engine and electric motor
are used (



P. 95). Also, if a little electricity is remaining in the

hybrid battery (traction battery), HV mode is automatically selected.
To drive in EV/EV auto mode long, observe the followings.

●

Avoid sudden acceleration and sudden deceleration, and be sure
to drive smoothly.
If you repeatedly accelerate, the hybrid battery (traction battery)
charge will deplete quickly. Also, EV driving may be canceled by
rapid acceleration or vehicle speed.

●

Restrain your speed as much as possible. The distance that can
be driven in EV/EV auto mode will reduce considerably at high
speeds.

*

: The EV driving range can be checked using the multi-information dis-

play etc. (



P. 214, 230, 237, 254)

■

When in HV mode

The vehicle can be used in the same way as a standard hybrid
vehicle.
In HV mode, controls are primarily carried out as follows in accor-
dance with the driving conditions.

●

The gasoline engine stops

*

when the vehicle is stopped.

●

During start off, the electric motor (traction motor) drives the vehi-
cle.

●

During normal driving, the gasoline engine and electric motor
(traction motor) are controlled effectively, and the vehicle is
driven with optimum fuel efficiency. Also, when necessary, the
electric motor (traction motor) operates as an electrical generator
to charge the hybrid battery (traction battery).

●

When the accelerator pedal is depressed heavily, drive force
from both the gasoline engine and the electric motor (traction
motor) is used to accelerate.

*

: When the hybrid battery (traction battery) requires charging or the

engine is warming up, etc., the gasoline engine will not automatically
stop. (



P. 95)

Control when driving in each mode

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When braking (regenerative braking)

The electric motor (traction motor) charges the hybrid battery (trac-
tion battery).
The EV driving range can be extended by actively using this regen-
erative braking to store electricity in the hybrid battery (traction bat-
tery).
Moreover, as fuel consumption is also reduced when in HV mode,
the regenerative braking system can be used effectively.

In order to make EV/EV auto
mode available, charge the hybrid
battery (traction battery) from an
external power source before
using the vehicle.

Even if charging the hybrid battery
(traction battery) has not been
completed, the vehicle can be
driven. However, if there is not
enough charge remaining, it is pos-
sible that the vehicle cannot be
driven in EV/EV auto mode or the
EV driving range will become
shorter.

When driving with the gasoline engine stopped, a sound, which
changes in accordance with the driving speed, will be played in order
to warn people nearby of the vehicle’s approach. The sound will stop
when the vehicle speed exceeds approximately 22 mph (35 km/h).

Charging (



P. 110)

Vehicle proximity notification system

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Regenerative braking

In the following situations, kinetic energy is converted to electric energy and
deceleration force can be obtained in conjunction with the recharging of the
hybrid battery (traction battery).

●

The accelerator pedal is released while driving with the shift position in D or
B.

●

The brake pedal is depressed while driving with the shift position in D or B.

■

EV driving range

●

The EV driving range is displayed on the multi-information display etc.
(



P. 214, 230, 237, 254)

●

The EV driving range changes in accordance with the charge status of the
hybrid battery (traction battery), the speed of the vehicle, etc.

●

Even if there is enough charge remaining in the hybrid battery (traction bat-
tery), EV driving may be canceled and both gasoline engine and electric
motor are used depending on the situation. (



P. 95)

■

After EV mode has switched to HV mode due to low hybrid battery (trac-
tion battery) charge

If the hybrid battery (traction battery) is regenerated by driving continuously
down a long slope, the EV driving range etc. will be displayed on the multi-
information display and EV mode will be automatically switched to.
If EV mode is not switched to even though EV driving range is being dis-
played, EV mode can be switched to by pressing the EV/HV mode selection
switch.

■

Refilling fuel

Plug-in hybrid vehicles can be driven using electricity charged from an exter-
nal power source. However, as the gasoline engine is used depending on the
situation even if in EV mode, and the gasoline engine is provided on board as
a power source for driving in HV mode, it is needed to refueling the vehicle.
Check the fuel amount and refill immediately when the fuel level becomes
low. (



P. 371)

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2-1. Plug-in hybrid system

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■

Gasoline engine operation in EV/EV auto mode

Even if there is a sufficient amount of electricity remaining in the hybrid bat-
tery (traction battery) and EV driving range (



P. 214, 230, 237, 254) is being

displayed on the multi-information display etc., EV driving (driving using only
the electric motor) may be canceled and both gasoline engine and electric
motor are used depending on the situation (EV driving will be returned to
automatically after EV driving becomes possible again).
EV driving may be canceled automatically in the following circumstances:

●

When vehicle speed is more than approximately 84 mph (135 km/h).

●

When power is needed temporarily, for example when the accelerator pedal
is depressed firmly or when accelerating suddenly.

*

●

When the temperature of the hybrid system is high.
The vehicle has been left in the sun, driven on a hill, driven at high speeds,
etc.

●

When the temperature of the hybrid system is low.

●

When the heater is switched on when the outside temperature is below
about 14°F (-10°C).

●

When the windshield defogger switch is pressed. (



P. 515, 527)

●

When the system determines that the gasoline engine needs to be started.

The gasoline engine may also operate in circumstances other than those
listed above, depending on conditions.

*

: When traveling in the EV auto mode only

■

Conditions in which the gasoline engine may not stop

The gasoline engine starts and stops automatically. However, it may not stop
automatically in the following conditions

*

:

●

During gasoline engine warm-up

●

During hybrid battery (traction battery) charging

●

When the temperature of the hybrid battery (traction battery) is high or low

●

When the windshield defogger switch is pressed. (



P. 515, 527)

*

: Depending on the circumstances, the gasoline engine may also not stop

automatically in situations other than those above.

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■

If the vehicle is not used for a long time

●

The 12-volt battery may discharge. In this event, charge the 12-volt battery.
(



P. 607)

In order to prevent the hybrid battery (traction battery) from becoming
extremely low in charge, charge the hybrid battery (traction battery) from
external power source or start the hybrid system at least once every 2 or 3
months, and turn the power switch off after the gasoline engine has
stopped automatically. (If the gasoline engine does not start up even after
approximately 10 seconds have passed since the “READY” indicator came
on, the power switch can be turned to off without any further action.)

●

When the vehicle is left with the charging cable connected, the electricity
consumption amount of the 12-volt battery increases due to controls, such
as the system checking, operating. When the charging cable is not needed,
immediately remove it from the vehicle.

■

Sounds and vibrations specific to a hybrid vehicle

There may be no engine sound or vibration even though the vehicle is able to
move with the “READY” indicator is illuminated. For safety, apply the parking
brake and make sure to shift the shift position to P when parked.
The following sounds or vibrations may occur when the hybrid system is
operating and are not a malfunction.

●

Motor sounds may be heard from the engine compartment.

●

Sounds may be heard from the hybrid battery (traction battery) when the
hybrid system starts or stops.

●

Relay operating sounds such as a snap or soft clank will be emitted from the
hybrid battery (traction battery), behind the rear seats, when the hybrid sys-
tem is started or stopped.

●

Sounds from the hybrid system may be heard when the back door is open.

●

Sounds may be heard from the transmission when the gasoline engine
starts or stops, when driving at low speeds, or during idling.

●

Engine sounds may be heard when accelerating sharply.

●

Sounds may be heard due to regenerative braking when the brake pedal is
depressed or as the accelerator pedal is released.

●

Vibration may be felt when the gasoline engine starts or stops.

●

Cooling fan sounds may be heard from the air intake vents. (



P. 99)

■

Vehicle proximity notification system

In the following cases, the vehicle proximity notification system may be diffi-
cult for surrounding people to hear.

●

In very noisy areas

●

In the wind or the rain

Also, as the vehicle proximity notification system is installed on the front of
the vehicle, it may be more difficult to hear from the rear of the vehicle com-
pared to the front.

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in hybrid system

■

When “Proximity Notification System Malfunction Visit Your Dealer” is
displayed on the multi-information display

The vehicle proximity notification system may be malfunctioning. Have the
vehicle inspected by your Toyota dealer immediately.

■

Maintenance, repair, recycling, and disposal

Contact your Toyota dealer regarding maintenance, repair, recycling and dis-
posal. Do not dispose of the vehicle yourself.

WARNING

■

When using the hybrid battery (traction battery) charge mode

Observe the following precautions when using the hybrid battery (traction
battery) charge mode while parking.
Failure to do so may lead to death or serious health hazard, as the gasoline
engine operates when in the hybrid battery (traction battery) charge mode.

●

Do not stop the vehicle near flammable materials.

●

Do not use the hybrid battery (traction battery) charge mode in a closed
area where ventilation is insufficient, such as in a garage or area with
snow buildup.

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2-1. Plug-in hybrid system

Plug-in hybrid system precautions

The illustration is an example for explanation and may differ from the
actual item.

Take care when handling the hybrid system, as it contains a high
voltage system (about 600V at maximum) as well as parts that
become extremely hot when the hybrid system is operating.
Obey the caution labels attached to the vehicle.

Caution label
Charging inlet
Service plug
Air conditioning compressor
Power control unit and DC/DC
converter

Electric motor (traction motor)
High voltage cables (orange)
Onboard traction battery char-
ger
Hybrid battery (traction bat-
tery)

1
2
3
4
5

6
7
8

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There are air intake vents on both
sides of the rear seatback for the
purpose of cooling the hybrid bat-
tery (traction battery). If the vents
are blocked, charging/discharg-
ing of the hybrid battery (traction
battery) may become limited.

When a certain level of impact is detected by the impact sensor, the
emergency shut off system blocks off the high voltage current and
stops the fuel pump to minimize the risk of electrocution and fuel leak-
age. If the emergency shut off system activates, your vehicle will not
restart. To restart the hybrid system, contact your Toyota dealer.

A message is automatically displayed when a malfunction occurs in
the hybrid system or an improper operation is attempted.
If a warning message is shown on
the multi-information display, read
the message and follow the
instructions.

Hybrid battery (traction battery) air vents

Emergency shut off system

Hybrid warning message

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■

If a warning light comes on, a warning message is displayed or the 12-
volt battery is disconnected

The hybrid system may not start. In that case, try to start the system again. If
the “READY” indicator does not come on, contact your Toyota dealer.

■

Running out of fuel

When the vehicle has run out of fuel and the hybrid system cannot be started,
refuel the vehicle with at least enough gasoline to make the low fuel level
warning light (



P. 676) go off. If there is only a small amount of fuel, the

hybrid system may not be able to start. (The standard amount of fuel is about
2.0 gal. [7.5 L, 1.7 Imp.gal.], when the vehicle is on a level surface. This value
may vary when the vehicle is on a slope. Add extra fuel when the vehicle is
inclined.)

■

Electromagnetic waves

●

High voltage parts and cables on the hybrid vehicles incorporate electro-
magnetic shielding, and therefore emit approximately the same amount of
electromagnetic waves as conventional gasoline powered vehicles or home
electronic appliances.

●

Your vehicle may cause sound interference in some third party-produced
radio parts.

■

Effect of magnetic forces

If objects that generate strong magnetic forces, such as large speakers, are
placed inside the luggage compartment or installed nearby, the generated
magnetic forces may negatively affect the hybrid system.

■

Hybrid battery (traction battery) (lithium-ion battery)

The hybrid battery (traction battery) has a limited service life.
The hybrid battery (traction battery) capacity (the ability to hold a charge)
reduces with time and use in the same way as other rechargeable batteries.
The extent at which capacity reduces changes drastically depending on the
environment (ambient temperature, etc.) and usage conditions, such as how
the vehicle is driven and how the hybrid battery (traction battery) is charged.
This is a natural characteristic of lithium-ion batteries, and is not a malfunc-
tion. Also, even though the distance that can be driven in EV mode decreases
when the hybrid battery (traction battery) capacity reduces, vehicle perfor-
mance does not significantly become worse.
In order to reduce the possibility of the capacity reducing, follow the directions
listed on P. 143, “Capacity reduction of the hybrid battery (traction battery)”.

■

Starting the hybrid system in an extremely cold environment

When the hybrid battery (traction battery) is extremely cold (below approxi-
mately -22



F [-30



C]) under the influence of the outside temperature, it may

not be possible to start the hybrid system. In this case, try to start the hybrid
system again after the temperature of the hybrid battery increases due to the
outside temperature increase etc.

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2-1. Plug-in hybrid system

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Plug-

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WARNING

■

High voltage precautions

The vehicle has high voltage DC and AC systems as well as a 12-volt sys-
tem. DC and AC high voltage is very dangerous and can cause severe
burns and electric shock that may result in death or serious injury.

●

Never touch, disassemble, remove or replace the high voltage parts,
cables or their connectors.

●

The hybrid system will become hot after starting as the system uses high
voltage. Be careful of both the high voltage and the high temperature, and
always obey the caution labels attached to the vehicle.

●

Never try to open the service plug
access hole located in the luggage
compartment. The service plug is used
only when the vehicle is serviced and is
subject to high voltage.

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WARNING

■

Road accident cautions

Observe the following precautions to reduce the risk of death or serious
injury:

●

Pull your vehicle off the road, apply the parking brake, shift the shift posi-
tion to P, and turn the hybrid system off.

●

Do not touch the high voltage parts, cables and connectors.

●

If electric wires are exposed inside or outside your vehicle, an electric
shock may occur. Never touch exposed electric wires.

●

Do not touch the battery if liquid is leaking from or adhering to it.
If electrolyte (carbonic-based organic electrolyte) from the hybrid battery
(traction battery) comes into contact with the eyes or skin, it could cause
blindness or skin wounds. In the unlikely event that it comes into contact
with the eyes or skin, wash it off immediately with a large amount of water,
and seek immediate medical attention.

●

If electrolyte is leaking from the hybrid battery (traction battery), do not
approach the vehicle.
Even in the unlikely event that the hybrid battery (traction battery) is dam-
aged, the internal construction of the battery will prevent a large amount of
electrolyte from leaking out. However, any electrolyte that does leak out
will give off a vapor. This vapor is an irritant to skin and eyes and could
cause acute poisoning if inhaled.

●

Do not bring burning or high-temperature items close to the electrolyte.
The electrolyte may ignite and cause a fire.

●

If a fire occurs in the hybrid vehicle, leave the vehicle as soon as possible.
Never use a fire extinguisher that is not meant for electric fires. Using even
a small amount of water may be dangerous.

●

If your vehicle needs to be towed, do so with front wheels raised. If the
wheels connected to the electric motor (traction motor) are on the ground
when towing, the motor may continue to generate electricity. This may
cause a fire. (



P. 667)

●

Carefully inspect the ground under the vehicle. If you find that liquid has
leaked onto the ground, the fuel system may have been damaged. Leave
the vehicle as soon as possible.

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WARNING

■

Hybrid battery (traction battery)

●

Your vehicle contains a sealed lithium-ion battery.

●

Never resell, hand over or modify the hybrid battery. To prevent accidents,
hybrid batteries that have been removed from a disposed vehicle are col-
lected through Toyota dealer. Do not dispose of the battery yourself.
Unless the battery is properly collected, the following may occur, resulting
in death or serious injury:
• The hybrid battery may be illegally disposed of or dumped, and it is haz-

ardous to the environment or someone may touch a high voltage part,
resulting in an electric shock.

• The hybrid battery is intended to be used exclusively with your hybrid

vehicle. If the hybrid battery is used outside of your vehicle or modified
in any way, accidents such as electric shock, heat generation, smoke
generation, an explosion and electrolyte leakage may occur.
When reselling or handing over your vehicle, the possibility of an acci-
dent is extremely high because the person receiving the vehicle may
not be aware of these dangers.

●

If your vehicle is disposed of without the hybrid battery having been
removed, there is a danger of serious electric shock if high voltage parts,
cables and their connectors are touched. In the event that your vehicle
must be disposed of, the hybrid battery must be disposed of by your Toy-
ota dealer or a qualified service shop. If the hybrid battery is not disposed
of properly, it may cause electric shock that can result in death or serious
injury.

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NOTICE

■

Hybrid battery (traction battery) air vents

●

Make sure not to block the air intake vent with anything, such as a seat
cover, plastic cover, or luggage. If the vents are blocked, the charging/dis-
charging of the hybrid battery (traction battery) may become limited.

●

When dust etc. has accumulated in the air intake vent, clean it with a vac-
uum cleaner to prevent the vent from clogging.

●

Do not wet or allow foreign substances to enter the air vents as this may
cause a short circuit and damage the hybrid battery (traction battery).

●

Do not carry large amounts of water such as water cooler bottles in the
vehicle. If water spills onto the hybrid battery (traction battery), the battery
may be damaged. Have the vehicle inspected by your Toyota dealer.

●

A filter is installed to the air intake vent. When the filter remains noticeably
dirty even after cleaning the air intake vent, filter cleaning or replacement
is recommended. When cleaning the filter, refer to P. 582.

■

Notice about fuel

●

For plug-in hybrid vehicles, fuel may remain in the tank for a long time and
undergo changes in quality depending on the how the vehicle is used.
Refuel at least 5.3 gal. (20 L, 4.4 Imp.gal.) of fuel every 12 months (refuel
a total of at least 5.3 gal. [20 L, 4.4 Imp.gal.] over a 12-month period), as
this may affect components of the fuel system or the gasoline engine.

●

If the vehicle has not been refueled for a certain amount of time and it is
possible that the quality of the fuel remaining in the tank has changed, “No
new fuel has been added recently. Please refuel” is displayed on the multi-
information display when the power switch is turned to ON mode. If the
message is displayed, refuel the vehicle immediately.

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Plug-in hybrid vehicle driving tips

◆

Using EV mode and HV mode effectively

Primarily using EV mode when driving in cities and using HV mode
when driving on highways (or freeways) can help conserve fuel and
electricity. (



P. 90)

◆

Using Eco drive mode

When using Eco drive mode, the torque corresponding to the accel-
erator pedal depression amount can be generated more smoothly
than it is in normal conditions. In addition, the operation of the air
conditioning system (heating/cooling) will be minimized, improving
fuel and electricity economy. (



P. 430)

◆

Use of Hybrid System Indicator

Eco-friendly driving is possible by keeping the Hybrid System Indi-
cator within Eco area. (



P. 225)

◆

Shift position operation

Shift the shift position to D when stopped at a traffic light, or driving
in heavy traffic etc. Shift the shift position to P when parking. When
using the N, there is no positive effect on fuel consumption. In the
N, the gasoline engine operates but electricity cannot be gener-
ated. Also, when using the air conditioning system, etc., the hybrid
battery (traction battery) power is consumed.

For economical and ecological driving, pay attention to the fol-
lowing points:

106

PRIUS PRIME_OM_OM47D71U_(U)

2-1. Plug-in hybrid system

◆

Accelerator pedal/brake pedal operation

●

Drive your vehicle smoothly. Avoid abrupt acceleration and
deceleration. Gradual acceleration and deceleration will make
more effective use of the electric motor (traction motor) without
having to use gasoline engine power.

●

Avoid repeated acceleration. Repeated acceleration consumes
hybrid battery (traction battery) power, resulting in poor fuel con-
sumption. Battery power can be restored by driving with the
accelerator pedal slightly released.

◆

When braking

Make sure to operate the brakes gently and a timely manner. A
greater amount of electrical energy can be regenerated when slow-
ing down.

◆

Delays

Repeated acceleration and deceleration, as well as long waits at
traffic lights, will lead to high fuel and electricity consumption.
Check traffic reports before leaving and avoid delays as much as
possible. When driving in a traffic jam, gently release the brake
pedal to allow the vehicle to move forward slightly while avoiding
overuse of the accelerator pedal. Doing so can help control exces-
sive electricity and fuel consumption.

◆

Highway driving

●

Control and maintain the vehicle at a constant speed. Before
stopping at a toll booth or similar, allow plenty of time to release
the accelerator and gently apply the brakes. A greater amount of
electrical energy can be regenerated when slowing down.

●

Electricity consumption will increase significantly when driving at
high speeds in EV mode. If there will be a long distance to the
next external charging point after leaving a freeway, it is recom-
mended to drive in HV mode while on the freeway and change to
EV mode after leaving the freeway.

PRIUS PRIME_OM_OM47D71U_(U)

107

2-1. Plug-in hybrid system

2

Plug-

in hybrid system

◆

Air conditioning

●

Turn the “A/C” switch (

*

1

•

*

2

) off when it is

not needed. Doing so can help reduce excessive electricity and
fuel consumption.
In summer: When the ambient temperature is high, use the recir-
culated air mode. Doing so will help to reduce the burden on the
air conditioning system and reduce electricity and fuel consump-
tion as well.
In winter: Avoid excessive and unnecessary use of the heater.
Usage of the heated steering wheel (if equipped) and seat heat-
ers is effective. (



P. 539)

●

Using the Remote Air Conditioning System (



P. 535) while the

charging cable is connected to the vehicle can reduce electricity
consumption immediately after starting off by operating air condi-
tioning mainly using electricity from an external power source.

●

When setting the charging schedule, selecting the start time set-
ting mode and setting “Climate Prep” to “On” can reduce electric-
ity consumption immediately after starting off by operating air
conditioning before charging is completed. (



P. 157)

*

1

: Vehicles with 7-inch display

*

2

: Vehicles with 11.6-inch display

◆

Checking tire inflation pressure

Make sure to check the tire inflation pressure frequently. If there is
improper tire inflation pressure in the tires, the EV driving range will
become shorter, and fuel consumption when in HV mode will
increase.
Also, as snow tires can cause large amounts of friction, their use on
dry roads can lead to increased fuel and electricity consumption.

◆

Luggage

Carrying heavy luggage will lead to poor fuel economy. Avoid carry-
ing unnecessary luggage. Installing a large roof rack will also cause
poor fuel economy.

◆

Warming up before driving

Since the gasoline engine starts up and cuts out automatically,
warming up is not necessary.

108

PRIUS PRIME_OM_OM47D71U_(U)

2-1. Plug-in hybrid system

EV driving range

The value displayed on the multi-information display etc. (



P. 214,

230, 237, 254) is estimated from the following information.

●

The amount of hybrid battery (traction battery) charge currently
remaining

●

The electricity consumption (the estimated distance that can be
driven in EV mode per unit of electrical energy) based on the
recorded value

●

Past air conditioning system electricity consumption amount

The electricity consumption varies depending on how the vehicle is
driven. The vehicle automatically records the electricity consumption
when being charged and uses the electricity consumption for estimat-
ing the EV driving range. Therefore, the EV driving range displayed
when the hybrid battery (traction battery) is fully charged may differ
from the previous EV driving range depending on how the vehicle was
driven.
The EV driving range may change significantly with each charging
until the electricity consumption based on the recorded value is stable
(for approximately the first month or two). However, this does not indi-
cate a malfunction.
When the air conditioning system is turned on, the EV driving range
(with using the air conditioning system) is estimated based on the past
air conditioning electricity consumption amount considering that the
electricity consumption may become higher.

The EV driving range displayed on the multi-information display
etc. shows the reference distance that EV driving (driving using
only the electric motor) is possible, and the actual distance that
can be driven may differ from that displayed.

Even if the EV driving range is displayed, EV driving may be can-
celed and both gasoline engine and electric motor are used depend-
ing on the situation. (



P. 95)

Displayed value

PRIUS PRIME_OM_OM47D71U_(U)

109

2-1. Plug-in hybrid system

2

Plug-

in hybrid system

The distance that can be driven in EV mode varies significantly
depending on how the vehicle is driven, road conditions, the weather,
the outside temperature, usage conditions of electrical components
and the number of occupants.
The distance that can be driven in EV mode can be extended if the fol-
lowing is performed:

●

Maintain a safe distance from the vehicle in front and avoid unnec-
essary acceleration and deceleration

●

Accelerate and decelerate the vehicle as smoothly as possible

●

Drive at moderate speeds as much as possible and maintain a con-
stant speed

●

Set the air conditioning to a moderate temperature and turn the “A/C”

switch (

*

1

•

*

2

) off when it is not needed

●

Use tires of the specified size and maintain the specified tire pres-
sure

●

Use the EV/HV mode selection switch to drive in HV mode when
driving on a highway
Electricity consumption will increase substantially when driving on a
highway in EV mode.

●

Do not add unnecessary weight to the vehicle

*

1

: Vehicles with 7-inch display

*

2

: Vehicles with 11.6-inch display

The following indicate that charging has been carried out properly.

●

The charging indicator turns off

●

The Hybrid battery (traction battery) status indicators illuminate for
approximately 15 seconds. (



P. 112)

●

“Charging Complete” is displayed on the multi-information display
when starting off (



P. 140)

Regardless of the type of power source or whether the charging
schedule function is used, charging is completed if the above can be
confirmed.
Charging-related messages:



P. 185

Tips for extending the EV driving range

Display when charging is completed

110

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

Charging equipment

*

: If equipped

This vehicle features equipment for connecting to an external
power source.

Charging equipment and names

Charging inlet
Charging inlet light
Charging port lid
(



P. 111, 122)

Charging indicator (



P. 114)

Charging

connector

lock

switch

*

(



P. 125)

Hybrid battery (traction bat-
tery) status indicator (



P. 112)

Charging cable (



P. 115)

Charging port

1
2
3

4
5

6

7
8

PRIUS PRIME_OM_OM47D71U_(U)

111

2-2. Charging

2

Plug-

in hybrid system

■

Opening the charging port lid

Vehicles without smart lid &
connector locking system:
Press the rear edge of the
charging port lid (the position
shown in the illustration).

Push and take your hand away
to slightly open the charging port
lid. Then open the lid fully by
hand.

Vehicles with smart lid & con-
nector locking system:
Press the rear edge of the
charging port lid (the position
shown in the illustration) with
the doors unlocked.

Push and take your hand away
to slightly open the charging port
lid. Then open the lid fully by
hand.
While the doors are locked, only the charging port lid can be unlocked
by carrying an electronic key and pressing the charging port lid.
(



P. 122)

Opening and closing the charging port lid

112

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

■

Closing the charging port lid

Close the charging port lid and
press the rear edge of the
charging port lid (the position
shown in the illustration).

Vehicles with smart lid & con-
nector locking system:

• When the doors are locked

with the smart key system,
wireless remote control or
door lock switch, the charging
port lid is also locked.
(



P. 281, 283)

• If the charging port lid is

closed with the doors locked,
the charging port lid locks.

When the charging cable is con-
nected to the charging inlet, the
user is informed of the charging
status of the hybrid battery (trac-
tion battery) by the statuses of 3
indicators (turned off, illuminated
or flashing).

■

During charging

Hybrid battery (traction battery) status indicator

Charging status of the

hybrid battery

(traction battery)

Hybrid battery (traction battery) status indicator

About less than half

Flashes

Not illuminated Not illuminated

About more than half

Illuminated

Flashes

Not illuminated

Full

Illuminated

Illuminated

Flashes

1

2

3

PRIUS PRIME_OM_OM47D71U_(U)

113

2-2. Charging

2

Plug-

in hybrid system

■

Except during charging

The hybrid battery (traction battery) status indicators illuminate

*

1

while the charging port lid is open and any of the followings are per-
formed.

●

When an electronic key is carried near the effective range

*

2, 3

(



P. 293)

●

When the doors are unlocked

*

1

: The indicators illuminate for a maximum of approximately 15 seconds.

*

2

: Excluding the effective range of the charging port lid.

*

3

: Vehicles with smart lid & connector locking system only

■

When the hybrid battery (traction battery) is fully charged

When the charging cable is connected, all 3 hybrid battery (traction battery)
status indicators illuminate to inform the user that the hybrid battery (traction
battery) is fully charged.

*

*

: If the push lifter (



P. 152) is pushed in, the hybrid battery (traction battery)

status indicators may flash.

Charging status of the

hybrid battery

(traction battery)

Hybrid battery (traction battery) status indicator

About less than half

Illuminated

Not illuminated Not illuminated

About more than half

Illuminated

Illuminated

Not illuminated

Full

Illuminated

Illuminated

Illuminated

1

2

3

114

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

The illumination/flashing pattern
changes to inform the user of the
charging status in the following
ways.

*

: Turns off after flashing for a certain period of time.

■

Charging indicator

When a system malfunction occurs while charging or using the Remote Air
Conditioning System, the charging indicator rapidly flashes for a certain
period of time, and then turns off.
If this occurs, the next time the hybrid system is started, a message is dis-
played on the multi-information display. When a message is displayed, follow
the instructions displayed on the screen.

Charging indicator

Illumination/flashing

pattern

Vehicle condition

Illuminated

• Charging is in progress
• Charging is possible
• “Traction Battery Heater” (



P. 135) is operating

• “Traction Battery Cooler” (



P. 136) is operating

Flashing
(normally)

*

When charge schedule is registered (



P. 157) and

charging cable is connected to vehicle

Rapidly flashing

*

When charging cannot be carried out due to mal-
function in a power source or the vehicle etc.
(



P. 182)

Not illuminated

• Charging connector is not inserted into charging

inlet

• When the charging schedule (



P. 157) is on

standby

• When charging is completed

115

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

2

Plug-

in hybrid system

Charging cable

The function, correct operating, etc. of the charging cable are
written.

The names of each part of the charging cable

Charging connector
Latch release button
Plug
Plug-cord
CCID (Charging Circuit Inter-
rupting Device)

Power indicator (



P. 117)

Charging indicator (



P. 117)

Error warning indicator
(



P. 117)

1
2
3
4
5

6
7
8

116

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

The CCID (Charging Circuit Interrupting Device) has the following
safety features.

■

Electrical leakage detection function

If an electrical leakage is detected during charging, the power
source will be automatically interrupted, thus preventing fires or
electrical shocks caused by electrical leakage.

If the power source is interrupted, the error warning indicator flashes.
If the power source is interrupted:



P. 118

■

Automatic check function

This is an automatic system check that is run before charging
begins to check for problems in the operation of the electrical leak-
age detection function.

If a malfunction is found in the electrical leakage detection function as a
result of the check, the error warning indicator flashes to inform the
user. (



P. 118)

■

Temperature detection function

A temperature detection function is equipped to the plug. While
charging, if heat is generated due to looseness on the outlet side
etc., this function suppresses heat by controlling the charging cur-
rent.

■

Conditions for supplying current to the vehicle

The CCID (Charging Circuit Interrupting Device) is designed to pre-
vent electrical current from being supplied to the charging connec-
tor when it is not connected to the vehicle, even if the plug is
inserted into the outlet.

Safety functions

PRIUS PRIME_OM_OM47D71U_(U)

117

2-2. Charging

2

Plug-

in hybrid system

■

Indicator operation

3 indicators are used to indicate the following conditions.

Power indicator

Illuminates when electricity is
flowing to the CCID (Charging
Circuit Interrupting Device).

Charging indicator

Illuminates when charging is in
progress.

Error warning indicator

Flashes when there is an electri-
cal leakage or when a malfunc-
tion occurs in the CCID
(Charging Circuit Interrupting
Device).

CCID (Charging Circuit Interrupting Device) indicators

1

2

3

118

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

■

When a malfunction occurs during charging

The indicators on the CCID (Charging Circuit Interrupting Device)
use a combination of different statuses (not illuminated, illuminated
or flashing) to inform the user of internal malfunctions.

When the error warning indicator is illuminated or flashing, temporarily
remove the plug from the outlet and then reconnect it to check if the
error indicator turns off.
If the error warning indicator turns off, charging is now possible.
If it does not turn off, perform the correction procedure in the following
chart.

*

1

: When this occurs, charging is carried out without a limited charging current.

*

2

: When this occurs, charging is carried out with a limited charging current.

Status

Power

indicator

Error

warning

indicator

Cause/Correction procedure

Charging

system error

Not

illuminated

Not

illuminated

or

illuminated

An

electrical

leakage

is

detected and charging is can-
celed, or there is a malfunction
in the charging cable.



Consult your Toyota dealer

Illuminated

Flashes

Plug

temperature

detection

malfunction

Flashes

Flashes

There is a malfunction in the
plug temperature detection
part.

*

1



Consult your Toyota dealer

Plug

temperature

increase

detection

Flashes

Not

illuminated

An increase in the temperature
of the plug is detected due to an
improper connection between
the outlet and plug.

*

2



Check that the plug is
securely connected to the
outlet.

Charging

cable life

span notice

Illuminated

Flashes

The number of charges using
the charging cable is nearing
the end of its usable life span.



Consult your Toyota dealer

Charging

cable life

span

Illuminated

Illuminated

The number of charges using
the

charging

cable

has

exceeded its usable number of
charges.



Consult your Toyota dealer

PRIUS PRIME_OM_OM47D71U_(U)

119

2-2. Charging

2

Plug-

in hybrid system

WARNING

■

When using the charging cable and CCID (Charging Circuit Interrupt-
ing Device)

Observe the following precautions.
Failure to do so may cause an unexpected accident, resulting in death or
serious injury.

●

Do not attempt to disassemble or repair the charging cable, charging con-
nector, plug or CCID (Charging Circuit Interrupting Device).
If a problem arises with the charging cable or the CCID (Charging Circuit
Interrupting Device), stop charging immediately and contact your Toyota
dealer.

●

Do not subject the charging cable, charging connector, plug or CCID
(Charging Circuit Interrupting Device) to strong force or impact.

●

Do not apply excessive force to the charging cable by forcefully folding,
twisting, pulling or dragging the charging cable.

●

Do not damage the charging cable with sharp objects.

●

Do not fold the charging connector or plug or insert foreign objects into
them.

●

Do not put the charging connector and plug into water.

●

Do not bring the charging cable to a high-temperature item such as a heat-
ing device.

●

Do not apply a load to the charging cable and plug-cord (such as wrapping
the charging cable around the CCID (Charging Circuit Interrupting Device)
and the charging connector).

●

Do not use or leave the charging cable in situations where a load is
applied to the outlet and the plug (such as when the CCID (Charging Cir-
cuit Interrupting Device) is hanging in the air without contacting the
ground).

NOTICE

■

When use the charging cable and related parts



P. 155

■

Precautions for low temperatures

In low temperatures, the charging cable and plug-cord may become hard.
Therefore, make sure to not apply excessive force when they are hard. If
excessive force is applied to the hardened charging cable and plug-cord,
they may be damaged.

120

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

For safety, inspect the charging cable on a routine basis.

Inspecting and maintaining the charging cable

WARNING

■

Routine inspection

Check the following points regularly.
Failure to do so may cause an unexpected accident, resulting in death or
serious injury.

●

The charging cable, plug, charging connector, CCID (Charging Circuit
Interrupting Device) etc. have not been damaged

●

The outlet has not been damaged

●

The plug can be securely inserted into the outlet

●

The plug does not get extremely hot during use

●

The tip of the plug has not been deformed

●

The plug is not dirtied by dust etc.

Remove the plug from the outlet before inspecting it. If any abnormalities
are found in the charging cable as a result of the inspection, immediately
stop use and consult your Toyota dealer.

■

Maintaining the charging cable

When the charging cable is dirty, first remove the dirt with a hard, wringed
cloth, and then wipe the cable with a dry cloth.
However, never wash it with water. If the charging cable is washed with
water, fire or electric shock may occur during charging, possibly resulting in
death or serious injury.

■

When not using the charging cable for a long time

Remove the plug from the outlet. Dust could accumulate on the plug or in
the outlet, possibly causing overheating which could lead to a fire.
Also, keep the cable in a place free from moisture.

121

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

2

Plug-

in hybrid system

Smart lid & connector locking system



Smart lid system
Operating the charging port lid carrying the electronic key on your
person, for example in your pocket, can unlock only the charging
port lid with the doors of the vehicle locked.
Charging connector locking system
Operating the charging connector lock switch carrying the elec-
tronic key on your person, for example in your pocket, can lock and
unlock the charging connector.

It can be used to prevent the charging cable removed or stolen while
charging.

■

Antenna location



P. 292

■

Effective range (areas within which the electronic key is detected)



P. 293



: If equipped

When carrying the electronic key on your person, for example in
your pocket, only the charging port lid can be unlocked, and the
charging connector can be locked or unlocked with the doors of
the vehicle locked.

Smart lid & connector locking system operation

1

2

122

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

■

Unlocking the charging port lid

Pressing the rear edge of the
charging port lid (the position
shown in the illustration) carry-
ing the electronic key on your
person, for example in your
pocket, can unlock the charging
port lid.

Push and take your hand away
to slightly open the charging port
lid.

■

Locking the charging port lid

Close the charging port lid
and press the rear edge of
the charging port lid (the
position shown in the illustra-
tion).

Using the smart lid system

1

PRIUS PRIME_OM_OM47D71U_(U)

123

2-2. Charging

2

Plug-

in hybrid system

Locking the doors using the smart key system or wireless remote
control. (



P. 281, 282)

The charging port lid will be locked.
If the charging port lid is closed with the doors locked, the charging port
lid locks.

■

Charging port lid

●

If the rear edge of the charging port lid (the position shown in the illustra-
tions on P. 111 and 122) is pressed when the doors are locked and you are
not carrying the electronic key, the charging port lid opens slightly, but
remains locked. Carry an electronic key or unlock the doors, and then press
the charging port lid twice to open it.

●

If the charging port lid is opened and closed repeatedly, the charging port lid
lock may not operate in order to protect the system. In this case, press the
charging port lid twice after a while.

■

If the smart key system has been deactivated in a customized setting

The smart lid & connector locking system will also be deactivated. If the smart
key system has been deactivated in a customized setting, the charging port
lid can be locked and unlocked by performing the following procedures.

●

Locking the charging port lid

Close the charging port lid. (



P. 112)

Locking the doors using the wireless remote control or door lock switch.
(



P. 282, 283)

The charging port lid can be locked if the steps and are performed in
reverse.

●

Unlocking the charging port lid

Unlocking the doors using the wireless remote control or door lock
switch. (



P. 282, 283)

Open the charging port lid. (



P. 111)

2

1

2

1

2

1

2

124

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

■

If the charging port lid does not open

If the charging port lid does not open when using the normal procedure, it can
be opened in an emergency by performing the following steps.

Open the back door. (



P. 287)

Prepare the wheel nut wrench. (



P. 630)

Insert a wheel nut wrench as shown in the illustration.

Press the center of the rear edge of the charging port lid to open it.
(



P. 111)

This unlocking method is a temporary correction procedure for emergency
use only. If the problem persists, have the vehicle inspected by your Toyota
dealer immediately.

Pull the knob and remove the cover
shown in the illustration.

Insert the end of the wheel nut
wrench along the cutout of the cover
installation area.
Temporarily place the L-shaped part
of the wheel nut wrench where it con-
tacts the deck board.
(Place the wheel nut wrench so that it
is perpendicular to the work hole.)

From the condition in step , insert the
wheel nut wrench upwards into the
vehicle.
Pressing the emergency release lever
inside the work hole will unlock the
charging port lid.

1

2

3

4

1

2

5

4

6

PRIUS PRIME_OM_OM47D71U_(U)

125

2-2. Charging

2

Plug-

in hybrid system

■

Locking and unlocking the charging connector

Carry the electronic key on your person, for example in your
pocket.

Insert the charging connector
into the charging inlet.
(



P. 147)

Press the charging connector
lock switch.

The charging connector is
locked and unlocked each time
the switch is pressed.

Using the charging connector locking system

1

2

126

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

■

Changing the charging connector lock settings

The method for locking and unlocking the charging connector can
be changed as follows in the “Vehicle Settings” settings on the
multi-information display.

Refer to P. 246 for details on how to change the settings.

*

1

: Carrying the electronic key and unlocking the doors is not necessary.

*

2

: The charging connector can be locked and unlocked by similar operations

to that of “Manual Lock”.

*

3

: The charging connector will be unlocked if power supply is interrupted due

to a power outage etc. after the charging connector is automatically locked.

Setting

Operation description

“Manual Lock”

(Default setting)

The charging connector is locked and unlocked by
pressing the charging connector lock switch when
carrying the electronic key or after unlocking the
doors.

“Auto Lock”

The charging connector is automatically locked
when the charging connector is connected.

*

1, 2

“Auto Lock & Auto

Unlock”

The charging connector is automatically locked
when the charging connector is connected and
automatically unlocked when charging is com-
pleted.

*

1, 2, 3

PRIUS PRIME_OM_OM47D71U_(U)

127

2-2. Charging

2

Plug-

in hybrid system

■

Charging connector locking system

●

If the charging connector lock switch is operated repeatedly, the charging
connector locking system may not work to protect the system. In this case,
wait for a while before operating the switch again.

●

The charging connector locking system does not guarantee to prevent theft
of the charging cable, and is not necessarily effective for all the situations.

■

When the charging connector cannot be inserted into the charging inlet

■

If the smart key system has been deactivated in a customized setting

●

The smart lid & connector locking system will also be deactivated. If the
smart key system has been deactivated in a customized setting, the
charging connector can be locked and unlocked by performing the following
procedure.

Unlock the doors using the wireless remote control or door lock switch.
(



P. 282, 283)

Insert the charging connector into the charging inlet (only when locking
the charging connector).
Press the charging connector lock switch.
The charging connector will lock or unlock.

●

When the charging connector lock setting (



P. 126) is set to “Auto Lock”,

the above procedures are only necessary when unlocking. When set to
“Auto Lock & Auto Unlock”, the connector lock function operates, even if the
smart key system is deactivated.

Check that the connector lock pin is not
lowered.
If the connector lock pin is lowered, the
connector lock is operating. Carry an
electronic key or unlock the doors, and
then press the charging connector lock
switch to unlock the connector lock and
check that the connector lock pin is not
lowered.

Connector lock pin

1

2

3

128

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

■

If the charging cable cannot be unlocked

If the charging connector cannot be unlocked by pressing the charging con-
nector lock switch even after carrying an electronic key or unlocking the
doors, the charging connector can be unlocked by operating the emergency
release lever.

Approximately 2.0 in. (50 mm)
Approximately 0.9 in. (20 mm)
Open the back door. (



P. 287)

Pull the knob and remove the cover as
shown in the illustration.

Insert a hand from the lower side of the
vehicle obliquely upward, and hook a
finger to the emergency release lever.

Move the emergency release lever in
the direction shown in the illustration.

*

The charging connector is unlocked and
can be removed.

*

: Make sure to move in the direction

shown in the illustration. Applying force
in other directions may damage the
emergency release lever.

1

2

1

2

3

4

PRIUS PRIME_OM_OM47D71U_(U)

129

2-2. Charging

2

Plug-

in hybrid system

Reinstall the cover to the its original position.

This method is a temporary correction procedure for emergency use only. If
the problem persists, have the vehicle inspected by your Toyota dealer imme-
diately.
Do not operate the emergency release lever when the charging connector
can be unlocked in the normal procedure.

■

When recharging or replacing the 12-volt battery



P. 718

WARNING

■

When connecting the charging connector to the charging inlet

5

●

Do not insert hand into the connector
lock portion.
A hand may be caught in the connector
lock pin, resulting in an injury.

●

Be careful not to touch the charging port
lid lock portion.
When the connector lock operates, the
charging port lid lock will also operate.
The charging port lid lock pin may hit a
hand, resulting in an injury.

Connector lock pin

Charging port
lid lock pin

130

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

NOTICE

■

When locking the charging connector

Observe the following precautions. Failure to do so may cause a malfunc-
tion in the charging connector locking system.

●

Check that the charging connector is compatible with this vehicle
A charging connector of the different type or a charging connector with
damaged or deformed insertion part may not be locked.

●

Do not operate the charging connector lock switch before the charging
connector is connected

●

Operate the charging connector lock switch after firmly inserting the
charging connector into the charging inlet

●

Do not apply excessive force to the charging connector when the charging
connector is locked
When removing the charging connector, make sure to unlock the charging
connector.

131

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

2

Plug-

in hybrid system

Power sources that can be used

●

Connect to an AC 120 V outlet (NEMA 5-15R) with a Ground-Fault
Circuit-Interrupter (GFCI) and a circuit breaker. Use of a 15A indi-
vidual circuit is strongly recommended to ensure charging cable will
operate properly.

●

When charging outdoors, make sure to connect to a weatherproof
outlet that is certified for outdoor use.
Checking Ground-Fault Circuit-Interrupter (GFCI) operation before
its use is recommended.

NEMA 5-15R outlet

The illustration is an example
shown for demonstration pur-
poses, and may differ from the
actual configuration.

An external power source that fulfills the following criteria is
necessary for charging this vehicle. Confirm this before
charging.

WARNING

■

Warnings for electrical faults

Make sure to observe the precautions in this Owner’s Manual when
charging the vehicle.
Failure to use a power source that fulfills the requirements, or failure to
observe regulations while charging could lead to an accident, possibly
resulting in death or serious injury.

Power sources

Outlets that can be connected

132

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

■

The charging environment

For safe charging, the following charging equipment and settings are recom-
mended.

●

Weatherproof outlet
When charging outdoors, connect the plug to a weatherproof outlet, and
ensure that the plug remains waterproof while the plug is connected.

●

Dedicated circuit
• To reduce the risk of fire, connect only to an at least 15A branch circuit

with an over-current protection in accordance with the National Electric
Code, ANSI/NFPA 70.

• To reduce the risk of electric shock when working with the plug, connect

to a outlet with a Ground-Fault Circuit-Interrupter (GFCI) or that has an
Earth Leakage Circuit Breaker installed.

■

When your circuit breaker trips during charging

The upper limit of the charging current can be changed in the “Vehicle Set-
tings” settings on the multi-information display.

Press

or

of the meter control switches to select

(“Vehicle

Settings”) in the

screen, and then press

.

Press

or

of the meter control switches to select “Charge Settings”,

and then press

.

The “Charge Settings” screen will display.

Press

or

of the meter control switches to select “Charge Current”,

and then press

.

The “Charge Current” screen will display.

Press

or

of the meter control switches to select “8A”, and then

press

.

The maximum charging current during charging will be restricted to 8A.

*

If the breaker still trips while charging, even after changing the upper limit of
the charging current, check if the connected power source meets the speci-
fied charging conditions. (



P. 131)

*

: Restricting the charging current will lengthen the charging time.

1

2

3

4

PRIUS PRIME_OM_OM47D71U_(U)

133

2-2. Charging

2

Plug-

in hybrid system

WARNING

■

Power sources precautions

Observe the following precautions.
If you do not follow them, fire, electrical shock or damage may occur, possi-
bly resulting in death or serious injury.

●

Connect to an AC 120 V outlet (NEMA 5-15R) with a Ground-Fault Circuit-
Interrupter (GFCI) and supplied by a circuit breaker per your local code.
Use of a 15A individual circuit is strongly recommended.

●

Use of a block heater for charging is prohibited.

●

Make sure to connect the charging connector and charging inlet directly.
Do not connect a converting adaptor or extension cord between the
charging connector and charging inlet.

●

Do not connect the charging cable to a
multi-outlet adaptor, multi-plugs, or con-
version plug.

●

Connecting the charging cable to an
extension cord is strictly prohibited. The
extension cord may overheat and does
not contain a Ground-Fault Circuit-Inter-
rupter (GFCI).
The leakage detection function of the
CCID (Charging Circuit Interrupting
Device) may not operate correctly.

●

Do not connect to a power strip.

ITO12P109

ITO12P110

134

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

Charging methods

◆

Charging from an external power source (



P. 146)

This is a charging method used when charging from an AC outlet
(120 V) with the charging cable equipped to the vehicle or charging
at a public charging station.

The charging start time (or departure time) and day can be set to carry
out charging using the charging schedule at the desired date and time.
(



P. 157)

◆

Using the hybrid battery (traction battery) charge mode
(



P. 89)

The plug-in hybrid system can be switched to hybrid battery (trac-
tion battery) charge mode to charge the hybrid battery (traction bat-
tery) using electricity generated by gasoline engine operation.

The maximum charge amount in the hybrid battery (traction battery)
charge mode is approximately 80% of the fully charged capacity for the
charging from an external power source.

The time required to charge the hybrid battery (traction battery) differs
according to the charging voltage and charging current.

*

1

: This is the maximum value. Furthermore, the upper limit of the charging

current can be changed in the “Vehicle Settings” settings. (



P. 132)

*

2

: The time required for charging to complete depends on conditions such as

the remaining charge of the hybrid battery (traction battery), the outside
temperature and specifications of a charger (charging station).

The following methods can be used to charge the hybrid battery
(traction battery).

Estimated charging time

Connected power

source

Charging station

Home power source

Charging voltage

AC 240 V

AC 120 V

Charging current

*

1

16A

12A

Estimated charging

time

*

2

Approximately 2 hours

Approximately 5 hours

10 minutes

PRIUS PRIME_OM_OM47D71U_(U)

135

2-2. Charging

2

Plug-

in hybrid system

■

Charging time may increase

In the following situations, charging time may become longer than normal:

●

In very hot or very cold temperatures.

●

The vehicle is consuming a lot of electricity, for example, when the head
light switch is on etc.

●

There is a power outage during charging.

●

There is an interruption in the electrical supply.

●

There is a drop in the voltage of external power source.

●

The charge in the 12-volt battery is low, for example due to the vehicle being
left unused for a long period of time.

●

The maximum charging current is set to 8A through the “Vehicle Settings”
settings. (



P. 132)

●

When the “Traction Battery Heater” operates.

●

When the “Traction Battery Cooler” is operated before charging. (



P. 136)

●

When the plug generates heat due to a loose outlet connection etc.

■

Using a DC Charger

DC Chargers cannot be used with this vehicle.

This vehicle is equipped with several functions that are linked with
charging.

■

“Traction Battery Heater”

When the outside temperature is low and the charging cable is con-
nected to the vehicle, this function automatically warms the hybrid
battery (traction battery) until it reaches or exceeds a certain tem-
perature.

●

When the charging cable is removed from the vehicle or remains
connected to the vehicle for approximately 3 days, the system
automatically stops.

●

When the charging schedule is used (



P. 157), this function will

operate according to the charging schedule.

Charging-linked functions

136

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

■

Hybrid battery (traction battery) warming control (Alaska and
Canada only)

This control operates after the charging cable remains connected to
the vehicle for 3 days and “Traction Battery Heater” automatically
stops. It automatically insulates the hybrid battery (traction battery)
in extremely low temperatures.

●

This control stops 31 days after the charging cable is connected,
even if it is still connected to the vehicle.

●

When this control operates, charging schedule settings are
ignored and charging starts.

■

“Traction Battery Cooler”

When the hybrid battery (traction battery) is hot, this function pro-
tects it by using the vehicle air conditioning to cool it before
charging is carried out.
When the hybrid battery (trac-
tion battery) is above a certain
temperature and the power
switch is turned off, a check
screen is displayed on the
multi-information display that
indicates whether “Traction Bat-
tery Cooler” is implemented.

When “No” is selected, the hybrid battery (traction battery) cooling sys-
tem does not operate.

PRIUS PRIME_OM_OM47D71U_(U)

137

2-2. Charging

2

Plug-

in hybrid system

■

“Traction Battery Heater”

●

“Traction Battery Heater” may operate when charging is not being per-
formed.

●

When “Traction Battery Heater” is operating, the charging indicator illumi-
nates.

●

When “Traction Battery Heater” is operating during charging, the charging
time may be longer than normal.

●

If the outside temperature becomes high while “Traction Battery Heater” is
operating, charging may complete earlier than the “Departure” time set.
(



P. 157)

●

“Traction Battery Heater” can be turned on and off in the “Vehicle Settings”
settings on the multi-information display. (



P. 753)

●

“Traction Battery Heater” may operate even when the hybrid battery (trac-
tion battery) is fully charged depending on the temperature of the hybrid bat-
tery (traction battery).
• The remaining charge of the hybrid battery (traction battery) decreases

when “Traction Battery Heater” operates. The charging operation may
start again to charge the hybrid battery (traction battery).

• “Charging Stopped Due to Pulled Charging Connector” may be shown

when the charging connector is removed while recharging. (



P. 185)

138

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

■

“Traction Battery Cooler”

●

When the hybrid battery (traction battery) is above a certain temperature
and the power switch is turned off, a check screen is displayed on the multi-
information display that indicates whether “Traction Battery Cooler” is imple-
mented. Approximately 5 minutes after selecting “Yes” on this screen, sys-
tem operation becomes possible.

●

When charging starts, “Traction Battery Cooler” only operates if the hybrid
battery (traction battery) temperature is hot.

●

The charging indicator is illuminated while “Traction Battery Cooler” is on
standby or operating.

●

“Traction Battery Cooler” is implemented for a maximum of approximately
30 minutes. However, when the “Departure” time is set (



P. 157) and there

is not sufficient time between the current time and the time that charging will
complete, “Traction Battery Cooler” operation time may become shorter.

●

When there is a small amount of remaining charge in the hybrid battery
(traction battery), even if the hybrid battery (traction battery) is hot, “Traction
Battery Cooler” may not be implemented.

●

When the following operations are performed while “Traction Battery Cooler”
is operating, the hybrid battery (traction battery) cooling operation stops.
• A door is opened
• The hood is opened
• The power switch is turned to any mode other than off
• The shift position is changed to any position other than P
• The Remote Air Conditioning System is operated (



P. 535)

• “Charge Now” is implemented (



P. 158)

• The amount of remaining charge in the hybrid battery (traction battery) is

below a certain amount

●

When the power switch is turned off, a check screen is displayed on the
multi-information display that indicates whether “Traction Battery Cooler” is
implemented. This check screen can be turned on and off in the “Meter Cus-
tomize” settings on the multi-information display (



P. 248). However, when

the check screen is set to “Off”, “Traction Battery Cooler” is no longer oper-
ates.

●

“Traction Battery Cooler” uses the power of the hybrid battery (traction bat-
tery) and external power source.
• While “Traction Battery Cooler” is operating, the amount of the remaining

charge of the hybrid battery (traction battery) increases and decreases in
a certain range, and does not increase as in normal charging.

• The operation of “Traction Battery Cooler” is recognized as charging by a

charger. The charger that calculates the fee according to charging time
causes a charging fee.

139

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

2

Plug-

in hybrid system

Charging tips

To enable the use of EV mode, we recommend systematically
charging the vehicle.

Before leaving home

In order to use EV mode, charge
the hybrid battery (traction battery)
at home before leaving.
The charging schedule function
(



P. 157) can be used to set the

system to automatically fully
charge the hybrid battery (traction
battery) before your desired depar-
ture time. It is also possible to set
the air conditioning to make the
interior in a comfortable state
before your desired departure time.

At your destination

Use a public charging station to
charge the hybrid battery (traction
battery).
If there are no charging facilities at
your destination, the hybrid battery
(traction battery) can be charged
using the hybrid battery (traction
battery) charge mode. (



P. 89)

*

After returning home

In order to drive the next time, charge the hybrid battery (traction battery).
Settings the charge schedule allows you to charge the hybrid battery (trac-
tion battery) at the desired time such as late at night or early in the morn-
ing. Furthermore, the charging schedule can be set to automatically
charge the hybrid battery (traction battery) every day or at the same time
on certain days. (



P. 157)

*

: When using the hybrid battery (traction battery) charge mode while parked,

make sure that no flammable objects are near the vehicle and the vehicle
is parked in a well-ventilated area. (



P. 97)

This section explains methods for using the charging function
for this vehicle and checking information related to charging.

Systematically charging

1

2

3

140

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

■

Searching charging stations (vehicles with 11.6-inch display)

After applying to Entune App Suite, it is possible to use the smartphone appli-
cation to search the nearby charging stations.
For details about Entune App Suite, refer to http://www.toyota.com/entune/.

Information related to charging can be displayed and checked on the
multi-information display or 11.6-inch display (if equipped).

Refer to P. 267 for details on the screen display for the 11.6-inch display (if
equipped).

■

While charging

When any door is opened
during charging, the current
charging condition and remain-
ing time until charging is com-
plete can be checked.

■

After charging is complete

After charging is complete, the
first time that the hybrid system
is started, a message detailing
the results of the charging is
displayed. Also, a message is
displayed if an operation that
stops charging is performed or
a situation where charging can-
not be performed occurs.

When a message is displayed, follow the instructions displayed on the
screen. (



P. 185)

■

Combination meter display during charging

If approximately 100 seconds elapse after the power switch is turned to ON
mode during charging, the power switch will automatically turn off and the dis-
play will disappear.

Checking information related to charging

141

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

2

Plug-

in hybrid system

Things to know before charging

This vehicle has been designed to allow charging from an external
power source using a charging cable for exclusive use with standard
household AC outlets.
However, the vehicle differs greatly from standard household electri-
cal goods in the following ways, and incorrect usage could cause fire
or electric shock, possibly leading to death or serious injury.

●

The charging operation is designed to operate at 12A continuously
for the charge duration (up to 5 hours 10 minutes). (



P. 134)

●

Charging can be conducted outdoors.

To charge properly, follow the procedure after reading the explanation
below. Charging is intended to be carried out by licensed drivers only
who properly understand the charging procedure.

●

Do not allow children to use the charging cable without supervision.
Also, keep the charging cable out of reach of infants.

●

When charging with a charger, follow the procedures for using each
charger.

●

When charging using a public charging facility, check the setting of
the charging schedule function.

• When the charge schedule is registered, temporarily turn off the

function or turn “Charge Now” on. (



P. 164, 166, 174, 175)

• When the charge schedule is set to ON, charging will not start

even if the charging cable is connected. Also, charging fee may
occur due to connection of the charging cable.

Make sure to read the following precautions before connecting
the charging cable to the vehicle and charging the hybrid battery
(traction battery).

Charging precautions

142

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

Before charging, always check the following items.

●

The parking brake is applied. (



P. 352)

●

The headlights are switched off or set to AUTO, and lights such as
the emergency flashers and interior lights etc. are switched off.

If these light switches are turned ON, then these features will consume
electricity, and charging time will increase.

●

The power switch is off. (



P. 338)

Before charging, make sure that each part of the charging cable is in
good condition. (



P. 120)

■

Safety functions

●

The hybrid system will not start while the charging cable is attached to the
vehicle, even if the power switch is operated.

●

If the charging cable is connected while the “READY” indicator is illumi-
nated, the hybrid system will stop automatically and driving will not be possi-
ble.

●

When the charging cable is connected to the vehicle, the shift position can-
not be changed from P to another position.

■

During charging

The followings occur, however, it does not indicate a malfunction.

●

The charging starting time may differ depending on the state of the vehicle.

●

During charging, the sound of the fan may be heard from the onboard trac-
tion battery charger cooling air intake vents. (



P. 145)

●

During and after charging, the rear seat and its surrounding area in which
the onboard traction battery charger is installed may get warm.

Confirm the following before charging

Inspecting the charging cable

PRIUS PRIME_OM_OM47D71U_(U)

143

2-2. Charging

2

Plug-

in hybrid system

■

Capacity reduction of the hybrid battery (traction battery)

The capacity of the hybrid battery (traction battery) will decline gradually
when the hybrid battery (traction battery) is in use. The rate at which it
declines will differ in accordance with environmental conditions and the way
in which the vehicle is used. Observing the following can help suppress bat-
tery capacity decline.

●

Avoid parking the vehicle in areas with a high temperature under direct sun-
light when the hybrid battery (traction battery) is fully charged.

●

Avoid accelerating and decelerating frequently and suddenly when EV driv-
ing.

●

Avoid frequent driving near the top speed for EV driving. (



P. 95)

●

Leave a low level of charge in the hybrid battery (traction battery) when
leaving the vehicle undriven for a long period of time.
After confirming that EV mode has switched to HV mode, turn the power
switch off.

●

Use the charging schedule function as much as possible in order to fully
charge the hybrid battery (traction battery) immediately before starting
off. (



P. 157)

Also, if the hybrid battery (traction battery) capacity reduces, the distance that
can be driven in EV mode decreases. However, vehicle performance does
not significantly become worse.

■

When the remaining charge of the hybrid battery (traction battery) is low
after charging

In the following situations, the remaining charge of the hybrid battery (traction
battery) after charging completes may be less than normal in order to protect
the system (the EV driving range after the battery is fully charged may be
shorter).

*

●

Charging is carried out when the outside temperature is low or high

●

Charging is carried out immediately after high-load driving or in extreme
heat

When none of the above situations apply and there is a drastic drop in the
remaining charge of the hybrid battery (traction battery) after charging com-
pletes, have the vehicle inspected by your Toyota dealer.

*

: When this occurs, even if the remaining charge display of the hybrid battery

(traction battery) shows that it is fully charged, the remaining charge rapidly
decreases faster than normal.

■

When the charging amount sent to the hybrid battery (traction battery)
decreases

When the amount of power supplied by the charger is low or operation of the
“Traction Battery Heater”, etc., reduces the charging power sent to the hybrid
battery (traction battery), the charging amount sent to the hybrid battery (trac-
tion battery) may decrease.

144

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

■

Certification

This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference

that may cause undesired operation.

WARNING

■

Caution when charging

People with implantable cardiac pacemakers or cardiac resynchronization
therapy-pacemakers should not carry out the charging procedure. Ask
someone else to do it.

●

Do not approach the charger and charging cable while charging.
Charging procedure may affect the operation of such devices.

●

Do not remain in the vehicle during charging.
Charging procedure may affect the operation of such devices.

●

Do not enter the vehicle even to take something out of the luggage com-
partment.
Charging procedure may affect the operation of such devices.

■

When the charging cable is connected to the vehicle

Do not operate the shift lever.
In the unlikely event that the charging cable has been damaged, the shift
position may change from P to another position and the vehicle could move,
possibly leading to an accident.

NOTICE

■

Precautions when handling charging cable

Make sure to observe the following precautions. Failure to observe these
precautions may result in damage to the charging cable and charging inlet.

●

Insert the charging connector straight into the charging inlet.

●

After inserting the charging connector, do not apply excessive force to or
twist the connector. Also, do not lean on the connector or hang any objects
from it.

●

Do not step on or trip over the charging cable.

●

Vehicles with smart lid & connector locking system: Before removing the
charging connector, make sure that it is unlocked. (



P. 152)

●

After removing the charging cable, promptly return it to its proper location.

●

After removing the charging connector, securely install the charging inlet
cap.

PRIUS PRIME_OM_OM47D71U_(U)

145

2-2. Charging

2

Plug-

in hybrid system

NOTICE

■

Onboard traction battery charger cooling air intake vents

●

Do not block the air intake vents with seat covers or luggage

●

If the air intake vents are clogged with dust, clean them with a vacuum
cleaner

●

Do not allow water or foreign matter to enter the air intake vents

●

Do not spill large amounts of water near the air intake vents
If water is spilled, have the vehicle inspected by your Toyota dealer and do
not charge the hybrid battery (traction battery) before the inspection.

The grilles under the rear seats are the
cooling air intake vents for the onboard
traction battery charger installed under
the seats.
Make sure to observe the following pre-
cautions regarding the cooling air intake
vents. Failure to observe these precau-
tions may result in a charging system
malfunction.

146

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

How to charge



P. 142

Prepare the charging cable.
Insert the charging cable into
the outlet of the external power
source.

Make sure to hold the body of the
plug and insert it firmly into the out-
let.
Check that the power indicator on
the CCID (Charging Circuit Inter-
rupting Device) is illuminated. (If it
is not illuminated, refer to P. 180)
In order to reduce the load on the
outlet and plug, when inserting the
plug, use a string, etc. to hang the
CCID (Charging Circuit Interrupting
Device) on a hook or equivalent.

Open the charging port lid.
(



P. 111)

The charging inlet light will illumi-
nate.

This section explains the procedure for charging the hybrid bat-
tery (traction battery) with the equipped charging cable.
When using a charging station, make sure to check the opera-
tion instructions on the charging station.

When the charge schedule is registered, make sure “Charge Now”
is turned on before charging. (



P. 166, 175)

Confirm the following before charging

When charging

1

2

Charging inlet light

3

PRIUS PRIME_OM_OM47D71U_(U)

147

2-2. Charging

2

Plug-

in hybrid system

Remove the charging inlet cap
and secure it as shown in the
illustration.

Remove the protective cap of
the charging connector and
secure it to the cable.

Insert the charging connector
into the charging inlet.

Align the guide position on the bot-
tom of the charging connector, and
push the charging connector
straight into the charging inlet as
far as possible.
Once a “click” sound is heard,
check that the charging connector
is securely locked.

4

5

6

148

PRIUS PRIME_OM_OM47D71U_(U)

2-2. Charging

Confirm that the charging indi-
cator is illuminated.

Charging will not start if the
charging indicator does not illumi-
nate when the charging connector
is inserted. (



P. 181)

If the charging indicator is flashing,
the charge schedule is registered.
(



P. 149)

If the error warning indicator on the CCID (Charging Circuit Interrupting
Device) flashes during charging, check P. 118 and follow the correction
procedure.

Vehicles with smart lid & con-
nector locking system:
When you wish to lock the
charging connector, carry an
electronic key and press the
charging connector lock switch.

The charging connector will be
locked by the smart lid & connector
locking system. After the charging
connector is locked, the charging
connector cannot be unlocked by
pressing the charging connector
lock switch if the electronic key is
not in detection area of charging
port lid. (



P. 293)

The charging indicator will turn off when charging is completed.

7

8

PRIUS PRIME_OM_OM47D71U_(U)

149

2-2. Charging

2

Plug-

in hybrid system

■

During charging

●

The surface of the CCID (Charging Circuit Interrupting Device) may become
hot, but this does not indicate a malfunction.

●

Depending on radio wave conditions, interference may be heard on the
radio.

●

The current charging condition and the estimated time until charging will
complete can be checked on the multi-information display or 11.6-inch dis-
play (if equipped). (



P. 140, 273)

●

During charging, the hybrid battery (traction battery) status indicator illumi-
nates and flashes, and changes according to the charging amount.
(



P. 112)

■

If the charging indicator flashes after connecting the charging cable

The charge schedule (



P. 157) is registered and charging cannot be per-

formed. To cancel charging using the charging schedule and start charging,
perform any of the following procedures.

●

Turn “Charge Now” on (



P. 166, 175)

●

While the charging indicator is flashing, remove and reconnect the charging
connector within 5 seconds

■

When the charging connector cannot be inserted into the charging inlet
(vehicles with smart lid & connector locking system)



P. 127