Toyota Prius Prime (2020 year). Owner's manual — part 45

712

8-2. Steps to take in an emergency

After stopping the hybrid system and waiting for 5 minutes or
more, start the hybrid system again and check if “Hybrid System
Overheated” is shown on the multi-information display.
If the message does not disappear:
Stop the hybrid system and contact your Toyota dealer.
If the message is not displayed:
The hybrid system temperature has dropped and the vehicle may
be driven normally.

However, if the message appears again frequently, contact your Toyota
dealer.

WARNING

■

To prevent an accident or injury when inspecting under the hood of
your vehicle
Observe the following precautions.
Failure to do so may result in serious injury such as burns.

●

If steam is seen coming from under the hood, do not open the hood until
the steam has subsided. The engine compartment may be very hot.

●

After the hybrid system has been turned off, check that the “Accessory”,
“Ignition ON” or mileage display (

P. 210) on the main display and the

“READY” indicator are off.
When the hybrid system is operating, the gasoline engine may automati-
cally start, or the cooling fans may suddenly operate even if the gasoline
engine stops. Do not touch or approach rotating parts such as the fan,
which may lead to fingers or clothing (especially a tie, a scarf or a muffler)
getting caught, resulting in serious injury.

●

Do not loosen the coolant reservoir caps while the hybrid system and radi-
ator are hot.
High temperature steam or coolant could spray out.

6

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8-2. Steps to take in an emergency

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NOTICE

■

When adding engine/power control unit coolant
Add coolant slowly after the hybrid system has cooled down sufficiently.
Adding cool coolant to a hot hybrid system too quickly can cause damage to
the hybrid system.

■

To prevent damage to the cooling system
Observe the following precautions:

●

Avoid contaminating the coolant with foreign matter (such as sand or dust
etc.).

●

Do not use any coolant additive.

714

8-2. Steps to take in an emergency

If the vehicle becomes stuck

Set the parking brake and shift the shift position to P. Stop the
hybrid system.
Remove the mud, snow or sand from around the front wheels.
Place wood, stones or some other material under the front wheels
to help provide traction.
Restart the hybrid system.
Shift the shift position to D or R and release the parking brake.
Then, while exercising caution, depress the accelerator pedal.

■

When it is difficult to free the vehicle

Carry out the following procedures if the tires spin or the vehicle
becomes stuck in mud, dirt or snow:

Press

to turn off TRAC. (

P. 490)

1

2

3

4

5

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8-2. Steps to take in an emergency

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WARNING

■

When attempting to free a stuck vehicle
If you choose to push the vehicle back and forth to free it, make sure the
surrounding area is clear to avoid striking other vehicles, objects or people.
The vehicle may also lunge forward or lunge back suddenly as it becomes
free. Use extreme caution.

■

When changing the shift position
Be careful not to change the shift position with the accelerator pedal
depressed.
This may lead to unexpected rapid acceleration of the vehicle that may
cause an accident resulting in death or serious injury.

NOTICE

■

To avoid damage to the hybrid transmission and other components

●

Avoid spinning the front wheels and depressing the accelerator pedal
more than necessary.

●

If the vehicle remains stuck even after these procedures are performed,
the vehicle may require towing to be freed.

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8-2. Steps to take in an emergency

717

9

Vehicle specifications

9-1. Specifications

Maintenance data

(fuel, oil level, etc.). . .. 718

Fuel information . . . . 727
Tire information . . . . . 730

9-2. Customization

Customizable features . .. 741

9-3. Initialization

Items to initialize . . . ... 752

718

9-1. Specifications

Maintenance data (fuel, oil level, etc.)

*

: Unladen vehicle

Dimensions and weight

Overall length

182.9 in. (4645 mm)

Overall width

69.3 in. (1760 mm)

Overall height

*

57.9 in. (1470 mm)

Wheelbase

106.3 in. (2700 mm)

Tread

*

Front

60.2 in. (1530 mm)

Rear

60.6 in. (1540 mm)

Vehicle capacity weight
(Occupants + luggage)

840 lb. (385 kg)

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9-1. Specifications

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■

Vehicle identification number
The vehicle identification number (VIN) is the legal identifier for
your vehicle. This is the primary identification number for your
Toyota. It is used in registering the ownership of your vehicle.
This number is stamped on the
top left of the instrument panel.

This number is also stamped
under the right-hand front seat.

This number is also on the Cer-
tification label.

Vehicle identification

720

9-1. Specifications

■

Engine number
The engine number is stamped
on the engine block as shown.

Engine

Model

1.8 L 4-cylinder (2ZR-FXE)

Type

4-cylinder in line, 4-cycle, gasoline

Bore and stroke

3.17

 3.48 in. (80.5  88.3 mm)

Displacement

109.7 cu.in. (1798 cm

3

)

Valve clearance

Automatic adjustment

Fuel

Fuel type

Unleaded gasoline only

Octane Rating

87 (Research Octane Number 91) or higher

Fuel tank capacity
(Reference)

11.4 gal. (43 L, 9.5 Imp.gal.)

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9-1. Specifications

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

Generation/traction motor



Traction motor

Electric motor (generation motor/traction motor)

Type

Permanent magnet synchronous motor

Maximum output

22.5 kW

Maximum torque

29.5 ft•lbf (40 N•m, 4.1 kgf•m)

Type

Permanent magnet synchronous motor

Maximum output

53 kW

Maximum torque

120.2 ft•lbf (163 N•m, 16.6 kgf•m)

Hybrid battery (traction battery)

Type

Lithium-ion battery

Voltage

3.7 V/cell

Capacity

25 Ah

Quantity

95 cells

Nominal voltage

351.5 V

722

9-1. Specifications

■

Oil capacity (Drain and refill [Reference

*

])

*

: The engine oil capacity is a reference quantity to be used when changing

the engine oil. Park the vehicle on level ground. After warming up the
engine and turning off the hybrid system, wait more than 5 minutes, and
check the oil level on the dipstick.

■

Engine oil selection
“Toyota Genuine Motor Oil” is used in your Toyota vehicle. Use
Toyota approved “Toyota Genuine Motor Oil” or equivalent to satisfy
the following grade and viscosity.
Oil grade: API SN/RC multigrade engine oil
Recommended viscosity: SAE 0W-16
SAE 0W-16 is the best choice
for good fuel economy and
good starting in cold weather.
If SAE 0W-16 is not available,
SAE 0W-20 oil may be used.
However, it must be replaced
with SAE 0W-16 at the next oil
change.

Oil viscosity (0W-16 is explained here as an example):

• The 0W in 0W-16 indicates the characteristic of the oil which

allows cold startability. Oils with a lower value before the W allow
for easier starting of the engine in cold weather.

• The 16 in 0W-16 indicates the viscosity characteristic of the oil

when the oil is at high temperature. An oil with a higher viscosity
(one with a higher value) may be better suited if the vehicle is
operated at high speeds, or under extreme load conditions.

Lubrication system

With filter

4.4 qt. (4.2 L, 3.7 Imp.qt.)

Without filter

4.1 qt. (3.9 L, 3.4 Imp.qt.)

Outside temperature

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9-1. Specifications

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How to read oil container label:
API registered mark is added to
some oil containers to help you
select the oil you should use.

*

: The coolant capacity is a reference quantity.

If replacement is necessary, contact your Toyota dealer.

Cooling system

Capacity

*

Gasoline
engine

6.3 qt. (6.0 L, 5.3 Imp.qt.)

Power
control unit

1.6 qt. (1.5 L, 1.3 Imp.qt.)

Coolant type

Use either of the following:

• “Toyota Super Long Life Coolant”
• Similar high-quality ethylene glycol-

based non-silicate, non-amine, non-
nitrite, and non-borate coolant with
long-life hybrid organic acid technology

Do not use plain water alone.

Ignition system (spark plug)

Make

DENSO FC16HR-CY9

Gap

0.035 in. (0.9 mm)

NOTICE

■

Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark plug gap.

724

9-1. Specifications

*

: The fluid capacity is the quantity of reference.

If replacement is necessary, contact your Toyota dealer.

Electrical system (12-volt battery)

Open voltage at 68

F (20C):

12.0 V or higher
If the voltage is lower than the standard
value, charge the battery. (After charging
the battery, turn on the high beam head-
lights for 30 seconds with the power switch
off, and turn the headlights off.)

Charging rates

5 A max.

Transmission

Fluid capacity

*

3.9 qt. (3.7 L, 3.3 Imp.qt.)

Fluid type

Toyota Genuine ATF WS

NOTICE

■

Transmission fluid type
Using transmission fluid other than “Toyota Genuine ATF WS” may cause
deterioration in shift quality, locking up of your transmission accompanied
by vibration, and ultimately damage the transmission of your vehicle.

725

9-1. Specifications

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*

1

: Minimum pedal clearance when depressed with a force of 67.4 lbf (300 N,

30.6 kgf) while the hybrid system is operating.

*

2

: Parking brake pedal travel when depressed with a force of 67.4 lbf (300 N,

30.6 kgf).

Brakes

Pedal clearance

*

1

4.69 in. (119 mm) Min.

Pedal free play

0.04 — 0.24 in. (1.0 — 6.0 mm)

Brake pad wear limit

0.04 in. (1.0 mm)

Parking brake pedal travel

*

2

8 —

11 clicks

Fluid type

SAE J1703 or FMVSS No.116 DOT 3 or
SAE J1704 or FMVSS No.116 DOT 4

Steering

Free play

Less than 1.2 in. (30 mm)

Tires and wheels

Tire size

195/65R15 91S

Tire inflation pressure

(Recommended cold

tire inflation pressure)

Front

36 psi (250 kPa, 2.5 kgf/cm

2

or bar)

Rear

35 psi (240 kPa, 2.4 kgf/cm

2

or bar)

Spare

None

Wheel size

15

 6 1/2J

Wheel nut torque

76 ft•lbf (103 N•m, 10.5 kgf•m)

726

9-1. Specifications

Light bulbs

Light bulbs

Bulb No.

W

Type

Exterior

Back-up lights

921

16

A

Interior

Vanity lights



8

A

Front interior/personal lights



5

A

Rear interior light



8

B

Door courtesy lights



5

A

Luggage compartment light



5

A

A: Wedge base bulbs (clear)

B: Double end bulbs

727

9-1. Specifications

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Fuel information

■

Gasoline quality
In very few cases, driveability problems may be caused by the brand of gaso-
line you are using. If driveability problems persist, try changing the brand of
gasoline. If this does not correct the problem, consult your Toyota dealer.

■

Recommendation of the use of gasoline containing detergent additives

●

Toyota recommends the use of gasoline that contains detergent additives to
avoid the build-up of engine deposits.

●

All gasoline sold in the U.S.A. contains minimum detergent additives to
clean and/or keep clean intake systems, per EPA’s lowest additives concen-
tration program.

●

Toyota strongly recommends the use of Top Tier Detergent Gasoline. For
more information on Top Tier Detergent Gasoline and a list of marketers,
please go to the official website www.toptiergas.com.

You must only use unleaded gasoline.
Select octane rating 87 (Research Octane Number 91) or higher.
Use of unleaded gasoline with an octane rating lower than 87
may result in engine knocking. Persistent knocking can lead to
engine damage.

At minimum, the gasoline you use should meet the specifications of
ASTM D4814 in the U.S.A..