LEXUS ES 300H (2019 year). Manual — part 4

54

1-3. Hybrid system

■

When accelerating sharply

When the accelerator pedal is
depressed heavily, the power of the
hybrid battery (traction battery) is
added to that of the gasoline engine via
the electric motor (traction motor).

■

When braking (regenerative brak-
ing)

The wheels operate the electric motor
(traction motor) as a power generator,
and the hybrid battery (traction bat-
tery) is charged.

■

Regenerative braking

In the following situations, kinetic energy is

converted to electric energy and decelera-

tion 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 lever in D or S.

●

The brake pedal is depressed while driv-

ing with the shift lever in D or S.

■

EV indicator

The EV indicator comes on when the vehi-

cle is driven using only the electric motor

(traction motor) or the gasoline engine is

stopped.

■

Conditions in which the gasoline engine

may not stop

The gasoline engine starts and stops auto-

matically. However, it may not stop auto-
matically in the following conditions

*

:

●

During gasoline engine warm-up

●

During hybrid battery (traction battery)

charging

●

When the temperature of the hybrid bat-

tery (traction battery) is high or low

●

When the heater is switched on

*

: Depending on the circumstances, the

gasoline engine may also not stop auto-
matically in other situations.

■

Charging the hybrid battery (traction

battery)

As the gasoline engine charges the hybrid

battery (traction battery), the battery does

not need to be charged from an outside

source. However, if the vehicle is left parked

for a long time the hybrid battery (traction

battery) will slowly discharge. For this rea-

son, be sure to drive the vehicle at least

once every few months for at least 30 min-

utes or 10 miles (16 km). If the hybrid bat-

tery (traction battery) becomes fully

discharged and you are unable to start the

hybrid system, contact your Lexus dealer.

■

Charging the 12-volt battery

P.386

■

After the 12-volt battery has discharged

or when the terminal has been removed

and installed during exchange, etc.

The gasoline engine may not stop even if

the vehicle is being driven by the hybrid bat-

tery (traction battery). If this continues for a

few days, contact your Lexus dealer.

■

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 lever 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) behind the rear

seats when the hybrid system starts or

stops.

●

Relay operating sounds such as a snap or

55

1-3. Hybrid system

1

For safety and security

soft clank will be emitted from the hybrid

battery (traction battery), behind the rear

seats, when the hybrid system is started

or stopped.

●

Sounds from the hybrid system may be

heard when the trunk lid is open.

●

Sounds may be heard from the transmis-

sion 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 regenera-

tive 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 vent under the rear seat.

■

Maintenance, repair, recycling, and dis-

posal

Contact your Lexus dealer regarding main-

tenance, repair, recycling and disposal. Do

not dispose of the vehicle yourself.

■

Customization

Settings (e.g. on/off operation of the EV

indicator) can be changed.

(Customizable features:

P.412)

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. This
sound may be heard inside the vehicle.
The sound will stop when the vehicle
speed exceeds approximately 15 mph
(25 km/h).

■

Vehicle proximity notification system

In the following cases, the vehicle proximity

notification system may be difficult for sur-

rounding 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 compared to the front.

Vehicle proximity notification
system

56

1-3. Hybrid system

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

Warning label

Service plug

Hybrid battery (traction battery)

High voltage cables (orange)

Electric motor (traction motor)

Power control unit

Air conditioning compressor

■

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.361) 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 2.4gal. [9.0 L, 2.0 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 hybrid

vehicles incorporate electromagnetic

Hybrid system precautions

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

System components

A
B
C
D

E
F

G

57

1-3. Hybrid system

1

For safety and security

shielding, and therefore emit approxi-

mately the same amount of electromag-

netic waves as conventional gasoline

powered vehicles or home electronic

appliances.

●

Your vehicle may cause sound interfer-

ence in some third party-produced radio

parts.

■

Hybrid battery (traction battery)

The hybrid battery (traction battery) has a

limited service life. The lifespan of the

hybrid battery (traction battery) can

change in accordance with driving style and

driving conditions.

WARNING

■

High voltage precautions

This vehicle has high voltage DC and AC

systems as well as a 12-volt system. 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 warning labels

attached to the vehicle.

●

Never try to open the service plug

access hole located behind the rear

seats. The service plug is used only

when the vehicle is serviced and is

subject to high voltage.

■

Road accident cautions

Observe the following precautions to

reduce the risk of death or serious injury:

●

Stop the vehicle in a safe place to pre-

vent subsequent accidents. While

depressing the brake pedal, apply the

parking brake and shift the shift lever

to P to stop the hybrid system. Then,

slowly release the brake pedal.

●

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 elec-

tric wires.

●

If a fluid leak occurs, do not touch the

fluid as it may be strong alkaline elec-

trolyte from the hybrid battery (trac-

tion battery). If it comes into contact

with your skin or eyes, wash it off

immediately with a large amount of

water or, if possible, boric acid solu-

tion. Seek immediate medical atten-

tion.

●

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

damaged, the internal construction of

the battery will prevent a large amount

of electrolyte from leaking out. How-

ever, 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-tem-

perature 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 danger-

ous.

58

1-3. Hybrid system

There is an air intake vent under the
rear seat (right side) for the purpose of
cooling the hybrid battery (traction
battery). If the vent becomes blocked,
the hybrid battery (traction battery)
may overheat, leading to a reduction in
the hybrid battery (traction battery)
output.

WARNING

●

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.353)

●

Carefully inspect the ground under the

vehicle. If you find that liquid has

leaked onto the ground, the fuel sys-

tem may have been damaged. Leave

the vehicle as soon as possible.

■

Hybrid battery (traction battery)

●

Never resell, hand over or modify the

hybrid battery. To prevent accidents,

hybrid batteries that have been

removed from a disposed vehicle are

collected through Lexus dealer. Do not

dispose of the battery yourself.

Unless the battery is properly col-

lected, the following may occur, result-

ing in death or serious injury:

• The hybrid battery may be illegally dis-

posed of or dumped, and it is hazard-

ous to the environment or someone

may touch a high voltage part, result-

ing in an electric shock.

• The hybrid battery is intended to be

used exclusively with your hybrid vehi-

cle. 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 accident 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 Lexus

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.

NOTICE

■

Hybrid battery (traction battery)

Do not carry large amounts of water

such as water cooler bottles in the vehi-

cle. If water spills onto the hybrid battery

(traction battery), the battery may be

damaged. Have the vehicle inspected by

your Lexus dealer.

Hybrid battery (traction bat-
tery) air intake vent

59

1-3. Hybrid system

1

For safety and security

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

system, contact your Lexus dealer.

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

■

If a warning light comes on, a warning

message is displayed, or the 12-volt bat-

tery is disconnected

The hybrid system may not start. In this

case, try to start the system again. If the

“READY” indicator does not come on, con-

tact your Lexus dealer.

NOTICE

■

Hybrid battery (traction battery) air

intake vent

●

Make sure not to block the air intake

vent with anything, such as a seat

cover, plastic cover, or luggage. If the

vents become blocked, the hybrid bat-

tery (traction battery) input and output

may be restricted, leading to a reduc-

tion in hybrid battery (traction battery)

output and a malfunction.

●

When dust etc. has accumulated in the

air intake vent, periodically clean it

with a vacuum cleaner to prevent the

vent from clogging.

●

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 or

replacing the filter, contact your Lexus

dealer.

Refer to P.304 for details on how to

clean the filter.

●

Do not get water or foreign materials

in the air intake vent 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 Lexus dealer.

Emergency shut off system

Hybrid warning message

60

1-4. Theft deterrent system

1-4.Theft deterrent system

The indicator light flashes after the
power switch has been turned off to
indicate that the system is operating.
The indicator light stops flashing after
the power switch has been turned to

ACCESSORY or ON mode to indi-
cate that the system has been can-
celed.

■

System maintenance

The vehicle has a maintenance-free type

immobilizer system.

■

Conditions that may cause the system to

malfunction

●

If the grip portion of the key is in contact

with a metallic object

●

If the key is in close proximity to or touch-

ing a key registered to the security sys-

tem (key with a built-in transponder chip)

of another vehicle

■

Certifications for the immobilizer system



For vehicles sold in the U.S.A., Hawaii, Guam and Puerto Rico

Immobilizer system

The vehicle’s keys have built-in tran-
sponder chips that prevent the
hybrid system from starting if a key
has not been previously registered
in the vehicle’s on-board computer.
Never leave the keys inside the
vehicle when you leave the vehicle.
This system is designed to help pre-
vent vehicle theft but does not guar-
antee absolute security against all
vehicle thefts.

Operating the system

61

1-4. Theft deterrent system

1

For safety and security



For vehicles sold in Canada

NOTICE

■

To ensure the system operates cor-

rectly

Do not modify or remove the system. If

modified or removed, the proper opera-

tion of the system cannot be guaranteed.

62

1-4. Theft deterrent system

■

Items to check before locking the
vehicle

To prevent unexpected triggering of
the alarm and vehicle theft, make sure
of the following:
 Nobody is in the vehicle.
 The windows and moon roof are

closed before the alarm is set.

 No valuables or other personal

items are left in the vehicle.

■

Setting

Close the doors, trunk and hood, and
lock all the doors. The system will be
set automatically after 30 seconds.

The indicator light changes from being on
to flashing when the system is set.

■

Canceling or stopping

Do one of the following to deactivate
or stop the alarm:
 Unlock the doors.
 Turn the power switch to ACCES-

SORY or ON mode, or start the
hybrid system. (The alarm will be
deactivated or stopped after a few
seconds.)

■

System maintenance

The vehicle has a maintenance-free type

alarm system.

■

Triggering of the alarm

The alarm may be triggered in the following

situations:

(Stopping the alarm deactivates the alarm

system.)

●

The trunk is unlocked using the mechani-

cal key.

●

A person inside the vehicle opens a door,

the trunk or hood, or unlocks the vehicle

using a door lock switch.

Alarm

The alarm uses light and sound to
give an alert when an intrusion is
detected.
The alarm is triggered in the follow-
ing situations when the alarm is set:
 A locked door is unlocked or

opened in any way other than
using the entry function, wireless
remote control or mechanical
key. (The doors will lock again
automatically.)

 A locked trunk is unlocked or

opened in any way other than
using the entry function or wire-
less remote control.

 The hood is opened.

Setting/canceling/stopping the
alarm system

63

1-4. Theft deterrent system

1

For safety and security

●

The 12-volt battery is recharged or

replaced when the vehicle is locked.

(

P.386)

■

Alarm-operated door lock

In the following cases, depending on the sit-

uation, the door may automatically lock to

prevent improper entry into the vehicle:

●

When a person remaining in the vehicle

unlocks the door and the alarm is acti-

vated.

●

While the alarm is activated, a person

remaining in the vehicle unlocks the door.

●

When recharging or replacing the 12-volt

battery

NOTICE

■

To ensure the system operates cor-

rectly

Do not modify or remove the system. If

modified or removed, the proper opera-

tion of the system cannot be guaranteed.

64

1-4. Theft deterrent system

65

2

2

Vehi

cle

status

inform

ati

on a

nd i

ndic
ators

Vehicle status information

and indicators

2-1. Instrument cluster

Warning lights and indicators.

66

Gauges and meters . . . . .

70

Multi-information display. . ..

73

Head-up display . . . . . . ...

77

Energy monitor/consumption

screen . . . . . . . . . . . .

81

66

2-1. Instrument cluster

2-1.Instrument cluster

The image may differ from the actual condition.

Warning lights inform the driver of mal-
functions in the indicated vehicle’s sys-
tems.

Warning lights and indicators

The warning lights and indicators on the instrument cluster, center panel and
outside rear view mirrors inform the driver of the status of the vehicle’s various
systems.

Warning lights and indicators displayed on the instrument cluster

Warning lights

(U.S.A.)

Brake system warning light

*1

(

P.358)

(red)

(Canada)

Brake system warning light

*1

(

P.358)

(yellow)

Brake system warning light

*1

(

P.358)

High coolant temperature
warning light

*2

(

P.358)

Charging system warning
light

*2

(

P.359)

Low engine oil pressure warn-
ing light

*2

(

P.359)

(U.S.A.)

Malfunction indicator lamp

*1

(

P.359)

(Canada)

Malfunction indicator lamp

*1

(

P.359)

SRS warning light

*1

(

P.359)

(U.S.A.)

ABS warning light

*1

(

P.360)

67

2-1. Instrument cluster

2

Vehi

cle

status

inform

ati

on a

nd i

ndic
ators

*1

: These lights come on when the power

switch is turned to ON mode to indi-
cate that a system check is being per-
formed. They will go off after the hybrid
system is on, or after a few seconds.
There may be a malfunction in a system
if the lights do not come on, or go off.
Have the vehicle inspected by your
Lexus dealer.

*2

: This light illuminates on the multi-infor-

mation display.

The indicators inform the driver of the
operating state of the vehicle’s various

(Canada)

ABS warning light

*1

(

P.360)

Brake Override System warn-
ing light/Drive-Start Control
warning light

*2

(

P.360)

(red)

Electric power steering system
warning light

*1

(

P.360)

(yellow)

Electric power steering system
warning light

*1

(

P.360)

Low fuel level warning light
(

P.361)

Driver’s and front passenger’s
seat belt reminder light
(

P.361)

Rear passengers’ seat belt
reminder lights (

P.361)

Tire pressure warning light

*1

(

P.362)

(orange)

LTA indicator (

P.362)

(flashes)

Intuitive parking assist OFF indi-
cator

*1

(if equipped) (

P.362)

(flashes)

RCTA OFF indicator

*1

(if

equipped) (

P.363)

(flashes)

RCD OFF indicator (if
equipped) (

P.363)

(flashes)

PKSB OFF indicator

*1

(if

equipped) (

P.363)

(flashes or

illuminates)

PCS warning light

*1

(

P.364)

Slip indicator

*1

(

P.364)

(flashes)

(U.S.A.)

Parking brake indicator
(

P.364)

(flashes)

(Canada)

Parking brake indicator
(

P.364)

(flashes)

Brake hold operated indicator

*1

(

P.365)

Hybrid system overheat warn-
ing light

*2

(

P.365)

Master warning light

*1

(

P.365)

WARNING

■

If a safety system warning light does

not come on

Should a safety system light such as the

ABS and SRS warning light not come on

when you start the hybrid system, this

could mean that these systems are not

available to help protect you in an acci-

dent, which could result in death or seri-

ous injury. Have the vehicle inspected by

your Lexus dealer immediately if this

occurs.

Indicators

68

2-1. Instrument cluster

systems.

Turn signal indicator (

P.145)

(U.S.A.)

Headlight indicator (

P.150)

(Canada)

Tail light indicator (

P.150)

Headlight high beam indicator
(

P.152)

Automatic High Beam indicator
(

P.153)

PCS warning light

*1, 2

(

P.171)

Cruise control indicator
(

P.194)

Dynamic radar cruise control
indicator (

P.187)

Cruise control “SET” indicator
(

P.187)

(white)

LTA indicator (

P.181)

(green)

LTA indicator (

P.181)

(orange)

(flashes)

LTA indicator (

P.181)

BSM outside rear view mirror
indicators

*1, 3

(if equipped)

(

P.197, P.211)

BSM indicator (if equipped)
(

P.197)

Intuitive parking assist OFF indi-
cator

*1, 2

(if equipped)

(

P.205)

RCTA OFF indicator

*1, 2

(if

equipped) (

P.211)

RCD OFF indicator

*2

(if

equipped) (

P.215)

PKSB OFF indicator

*1, 2

(if

equipped) (

P.219)

(flashes)

Slip indicator

*1

(

P.236)

VSC OFF indicator

*1, 2

(

P.237)

Smart access system with push-
button start indicator (

P.135)

“READY” indicator (

P.135)

AGC indicator

*4

(

P.203)

EV drive mode indicator
(

P.139)

(U.S.A.)

Parking brake indicator
(

P.146)

(Canada)

Parking brake indicator
(

P.146)

Brake hold standby indicator

*1

(

P.148)

Brake hold operated indicator

*1

(

P.148)

EV indicator (

P.54)

Low outside temperature indi-
cator

*5

(

P.70)

Security indicator

*6

(

P.60,

P.62)

(U.S.A.)

“AIR BAG ON/OFF” indica-
tor

*1, 6

(

P.37)

69

2-1. Instrument cluster

2

Vehi

cle

status

inform

ati

on a

nd i

ndic
ators

 Drive mode indicators

*1

: These lights come on when the power

switch is turned to ON mode to indi-
cate that a system check is being per-
formed. They will go off after the hybrid
system is on, or after a few seconds.
There may be a malfunction in a system
if the lights do not come on, or go off.
Have the vehicle inspected by your
Lexus dealer.

*2

: This light comes on when the system is

turned off.

*3

: This light illuminates on the outside rear

view mirrors.

*4

: This light illuminates on the multi-infor-

mation display.

*5

: When the outside temperature is

approximately 37°F (3°C) or lower, this
indicator will flash for approximately 10
seconds, then stay on.

*6

: This light illuminates on the center

panel.

(Canada)

“AIR BAG ON/OFF” indica-
tor

*1, 6

(

P.37)

Traction battery status indica-
tor

*4

(

P.81)

Eco drive mode indicator
(

P.202)

Sport mode indicator
(

P.202)