Toyota Prius Prime (2021 year). Manual in english — part 10

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Positioning a floor jack

◆

Front

Set a floor jack against the front suspension member.

◆

Rear

When using a floor jack, follow the instructions in the manual
provided with the jack and perform the operation safely.
When raising your vehicle with a floor jack, position the jack cor-
rectly. Improper placement may damage your vehicle or cause
injury.

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Engine compartment

IO73PH112

Engine coolant reservoir

(



P. 604)

Fuse boxes

(



P. 650)

Engine oil level dipstick

(



P. 601)

Engine oil filler cap (



P. 602)

Brake fluid reservoir

(



P. 610)

Washer fluid tank (



P. 612)

12-volt battery

(



P. 607)

Power control unit coolant
reservoir

(



P. 604)

Radiator

(



P. 606)

Condenser

(



P. 606)

Electric cooling fans

1

2
3

4
5

6
7
8

9

10
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With the engine at operating temperature and turned off, check the oil
level on the dipstick.

■

Checking 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 for
the oil to drain back into the bottom of the engine.
Holding a rag under the end,
pull the dipstick out.

Wipe the dipstick clean.
Reinsert the dipstick fully.
Holding a rag under the end, pull the dipstick out and check the
oil level.

Low
Normal
Excessive

Wipe the dipstick and reinsert it fully.

Engine oil

1

2

3

4

5

1
2
3

6

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Adding engine oil

If the oil level is below or near
the low level mark, add engine
oil of the same type as that
already in the engine.

Make sure to check the oil type and prepare the items needed
before adding oil.

Remove the oil filler cap by turning it counterclockwise.
Add engine oil slowly, checking the dipstick.
Install the oil filler cap by turning it clockwise.

■

Engine oil consumption

A certain amount of engine oil will be consumed while driving. In the following
situations, oil consumption may increase, and engine oil may need to be
refilled in between oil maintenance intervals.

●

When the engine is new, for example directly after purchasing the vehicle or
after replacing the engine

●

If low quality oil or oil of an inappropriate viscosity is used

●

When driving at high engine speeds or with a heavy load, or when driving
while accelerating or decelerating frequently

●

When leaving the engine idling for a long time, or when driving frequently
through heavy traffic

Engine oil selection



P. 734

Oil quantity (Low



Full)

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

Items

Clean funnel

1

2

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WARNING

■

Used engine oil

●

Used engine oil contains potentially harmful contaminants which may
cause skin disorders such as inflammation and skin cancer, so care
should be taken to avoid prolonged and repeated contact. To remove used
engine oil from your skin, wash thoroughly with soap and water.

●

Dispose of used oil and filters only in a safe and acceptable manner. Do
not dispose of used oil and filters in household trash, in sewers or onto the
ground. Call your Toyota dealer, service station or auto parts store for
information concerning recycling or disposal.

●

Do not leave used engine oil within the reach of children.

NOTICE

■

To prevent serious engine damage

Check the oil level on a regular basis.

■

When replacing the engine oil

●

Be careful not to spill engine oil on the vehicle components.

●

Avoid overfilling, or the engine could be damaged.

●

Check the oil level on the dipstick every time you refill the vehicle.

●

Be sure the engine oil filler cap is properly tightened.

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The coolant level is satisfactory if it is between the “MAX” and “MIN”
lines on the reservoir when the hybrid system is cold.

■

Engine coolant reservoir

Reservoir cap
“MAX” line
“MIN” line

If the level is on or below the
“MIN” line, add coolant up to the
“MAX” line. (



P. 721)

■

Power control unit coolant reservoir

Reservoir cap
“FULL” line
“LOW” line

If the level is on or below the
“LOW” line, add coolant up to
the “FULL” line. (



P. 721)

Coolant

1
2
3

1
2
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■

Coolant selection

Only use “Toyota Super Long Life Coolant” or a similar high quality ethylene
glycol based non-silicate, non-amine, non-nitrite, and non-borate coolant with
long-life hybrid organic acid technology.
U.S.A.:
“Toyota Super Long Life Coolant” is a mixture of 50% coolant and 50% deion-
ized water. (Minimum temperature: -31



F [-35



C])

Canada:
“Toyota Super Long Life Coolant” is a mixture of 55% coolant and 45% deion-
ized water. (Minimum temperature: -44



F [-42



C])

For more details about coolant, contact your Toyota dealer.

■

If the coolant level drops within a short time of replenishing

Visually check the radiator, hoses, engine/power control unit coolant reservoir
caps, drain cock and water pump.
If you cannot find a leak, have your Toyota dealer test the cap and check for
leaks in the cooling system.

WARNING

■

When the hybrid system is hot

Do not remove the engine/power control unit coolant reservoir caps.
The cooling system may be under pressure and may spray hot coolant if the
cap is removed, causing serious injuries, such as burns.

NOTICE

■

When adding coolant

Coolant is neither plain water nor straight antifreeze. The correct mixture of
water and antifreeze must be used to provide proper lubrication, corrosion
protection and cooling. Be sure to read the antifreeze or coolant label.

■

If you spill coolant

Be sure to wash it off with water to prevent it from damaging parts or paint.

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Check the radiator and condenser and clear away any foreign objects.
If either of the above parts is extremely dirty or you are not sure of
their condition, have your vehicle inspected by your Toyota dealer.

Radiator and condenser

WARNING

■

When the hybrid system is hot

Do not touch the radiator or condenser as they may be hot and cause seri-
ous injuries, such as burns.

■

When the electric cooling fans are operating

Do not touch the engine compartment.
With the power switch in ON mode, the electric cooling fans may automati-
cally start to run if the air conditioning is on and/or the coolant temperature
is high. Be sure the power switch is off when working near the electric cool-
ing fans or radiator grille.

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Check the 12-volt battery as follows:

■

12-volt battery exterior

Make sure that the 12-volt battery terminals are not corroded and
that there are no loose connections, cracks, or loose clamps.
Terminals

■

When opening the cover of the positive (+) battery terminal

■

Before recharging

When recharging, the 12-volt battery produces hydrogen gas which is flam-
mable and explosive. Therefore, observe the following precautions before
recharging:

●

If recharging with the 12-volt battery installed on the vehicle, be sure to dis-
connect the ground cable.

●

Make sure the power switch on the charger is off when connecting and dis-
connecting the charger cables to the 12-volt battery.

12-volt battery

While pushing the portion shown in the
illustration from both sides, lift the end of
the cover up.

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After recharging/reconnecting the 12-volt battery

●

Unlocking the doors using the smart key system may not be possible imme-
diately after reconnecting the 12-volt battery. If this happens, use the wire-
less remote control or the mechanical key to lock/unlock the doors.

●

Start the hybrid system with the power switch in ACCESSORY mode. The
hybrid system may not start with the power switch turned off. However, the
hybrid system will operate normally from the second attempt.

●

The power switch mode is recorded by the vehicle. If the 12-volt battery is
reconnected, the vehicle will return the power switch mode to the status it
was in before the 12-volt battery was disconnected. Make sure to turn off
the power before disconnect the 12-volt battery. Take extra care when con-
necting the 12-volt battery if the power switch mode prior to discharge is
unknown.

If the system will not start even after multiple attempts at all methods above,
contact your Toyota dealer.

WARNING

■

Chemicals in the 12-volt battery

The 12-volt battery contains poisonous and corrosive sulfuric acid and may
produce hydrogen gas which is flammable and explosive. To reduce the risk
of death or serious injury, take the following precautions while working on or
near the 12-volt battery:

●

Do not cause sparks by touching the 12-volt battery terminals with tools.

●

Do not smoke or light a match near the 12-volt battery.

●

Avoid contact with eyes, skin and clothes.

●

Never inhale or swallow electrolyte.

●

Wear protective safety glasses when working near the 12-volt battery.

●

Keep children away from the 12-volt battery.

■

Where to safely charge the 12-volt battery

Always charge the 12-volt battery in an open area. Do not charge the
12-volt battery in a garage or closed room where there is insufficient ventila-
tion.

■

How to recharge the 12-volt battery

Only perform a slow charge (5 A or less). The 12-volt battery may explode if
charged at a quicker rate.

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WARNING

■

Emergency measures regarding electrolyte

●

If electrolyte gets in your eyes
Flush your eyes with clean water for at least 15 minutes and get immedi-
ate medical attention. If possible, continue to apply water with a sponge or
cloth while traveling to the nearest medical facility.

●

If electrolyte gets on your skin
Wash the affected area thoroughly. If you feel pain or burning, get medical
attention immediately.

●

If electrolyte gets on your clothes
It can soak through clothing on to your skin. Immediately take off the cloth-
ing and follow the procedure above if necessary.

●

If you accidentally swallow electrolyte
Drink a large quantity of water or milk. Get emergency medical attention
immediately.

■

When disconnecting the 12-volt battery

Do not disconnect the negative (-) terminal on the body side. The discon-
nected negative (-) terminal may touch the positive (+) terminal, which may
cause a short and result in death or serious injury.

NOTICE

■

When recharging the 12-volt battery

Never recharge the 12-volt battery while the hybrid system is operating.
Also, be sure all accessories are turned off.

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■

Checking fluid level

The brake fluid level should be
between the “MAX” and “MIN”
lines on the tank.

■

Adding fluid

Slide and lift up the rubber
strip to partly remove it as
shown.

Disconnect the claws and
remove the service cover.

Brake fluid

1

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Remove the reservoir cap.

Add brake fluid slowly while checking the fluid level.

Make sure to check the fluid type and prepare the necessary item.

■

Brake fluid can absorb moisture from the air

Excess moisture in the brake fluid can cause a dangerous loss of braking effi-
ciency. Use only newly opened brake fluid.

3

4

Fluid type

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

Items

Clean funnel

WARNING

■

When filling the reservoir

Take care as brake fluid can harm your hands and eyes and damage
painted surfaces.
If fluid gets on your hands or in your eyes, flush the affected area with clean
water immediately.
If you still experience discomfort, see a doctor.

NOTICE

■

If the brake fluid level is low or high

It is normal for the brake fluid level to go down slightly as the brake pads
wear out or when the fluid level in the accumulator is high.
If the reservoir needs frequent refilling, there may be a serious problem.

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Open the lid.

Check the washer fluid level on the level gauge.

“NORMAL”
“LOW”

If the washer fluid level is at
“LOW”, add washer fluid.

Washer fluid

1

2

1
2

3

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WARNING

■

When adding washer fluid

Do not add washer fluid when the hybrid system is hot or operating as
washer fluid contains alcohol and may catch fire if spilled on the engine etc.

NOTICE

■

Do not use any fluid other than washer fluid

Do not use soapy water or engine antifreeze instead of washer fluid.
Doing so may cause streaking on the vehicle’s painted surfaces, as well as
damaging the pump leading to problems of the washer fluid not spraying.

■

Diluting washer fluid

Dilute washer fluid with water as necessary.
Refer to the freezing temperatures listed on the label of the washer fluid bot-
tle.

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Tires

Check if the treadwear indicators are showing on the tires. Also check
the tires for uneven wear, such as excessive wear on one side of the
tread.

New tread
Worn tread
Treadwear indicator

The location of treadwear indicators is shown by the “TWI” or “



” mark,

etc., molded into the sidewall of each tire.
Replace the tires if the treadwear indicators are showing on a tire.

Rotate the tires in the order
shown.

To equalize tire wear and extend

tire life, Toyota recommends that

tire rotation is carried out at the

same interval as tire inspection.
Do not fail to initialize the tire

pressure warning system after

tire rotation.

Replace or rotate tires in accordance with maintenance sched-
ules and treadwear.

Checking tires

Tire rotation

1
2
3

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Your vehicle is equipped with a tire pressure warning system that uses
tire pressure warning valves and transmitters to detect low tire infla-
tion pressure before serious problems arise.
If the tire pressure drops below a predetermined level, the driver is
warned by a warning light. (



P. 677)

◆

Installing tire pressure warning valves and transmitters

When replacing tires or wheels, tire pressure warning valves and
transmitters must also be installed.
When new tire pressure warning valves and transmitters are
installed, new ID codes must be registered in the tire pressure
warning computer and the tire pressure warning system must be
initialized. Have tire pressure warning valve and transmitter ID
codes registered by your Toyota dealer. (



P. 616)

◆

Initializing the tire pressure warning system

■

The tire pressure warning system must be initialized in the fol-
lowing circumstances:

●

When rotating front and rear tires which have different tire infla-
tion pressures

●

When the tire inflation pressure is changed such as when chang-
ing traveling speed or load weight

When the tire pressure warning system is initialized, the current tire
inflation pressure is set as the benchmark pressure.

Tire pressure warning system

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■

How to initialize the tire pressure warning system

Park the vehicle in a safe place and turn the power switch off.

Initialization cannot be performed while the vehicle is moving.

Adjust the tire inflation pressure to the specified cold tire inflation
pressure level. (



P. 737)

Make sure to adjust the tire pressure to the specified cold tire infla-

tion pressure level. The tire pressure warning system will operate

based on this pressure level.

Turn the power switch to ON mode.

Switch the multi-information display to the

screen.

(



P. 246)

Press

or

of the meter control switches, select

(“Vehicle Settings”), and then press

.

Press

or

of the meter control switches, select “Mainte-

nance System”, and then press

.

Press

or

of the meter control switches, select “TPMS”,

and then press

.

Press and hold

.

When

initialization

com-

pletes, a message is dis-
played

on

the

multi-

information display and the
tire pressure warning light
illuminates.

◆

Registering ID codes

The tire pressure warning valve and transmitter is equipped with a
unique ID code. When replacing a tire pressure warning valve and
transmitter, it is necessary to register the ID code. Have the ID code
registered by your Toyota dealer.

1

2

3

4

5

6

7

8

Until Complete

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■

When to replace your vehicle’s tires

Tires should be replaced if:

●

The treadwear indicators are showing on a tire.

●

You have tire damage such as cuts, splits, cracks deep enough to

expose the fabric, and bulges indicating internal damage.

●

A tire goes flat repeatedly or cannot be properly repaired due to the size

or location of a cut or other damage.

If you are not sure, consult with your Toyota dealer.

■

Replacing tires and wheels

If the ID code of the tire pressure warning valve and transmitter is not reg-

istered, the tire pressure warning system will not work properly. After driv-

ing for about 20 minutes, the tire pressure warning light blinks for 1

minute and stays on to indicate a system malfunction.

■

Tire life

Any tire over 6 years old must be checked by a qualified technician even

if it has seldom or never been used or damage is not obvious.

■

Routine tire inflation pressure checks

The tire pressure warning system does not replace routine tire inflation

pressure checks. Make sure to check tire inflation pressure as part of

your routine of daily vehicle checks.

■

Maximum load of tire

Check that the maximum load of the replacement tire is greater than 1/2

of the Gross Axle Weight Ratings (GAWR) of either the front axle or the

rear axle, whichever is greater.
For the GAWR, see the Certification

Label. For the maximum load of the tire,

see the load limit at maximum cold tire

inflation pressure mentioned on the

sidewall of the tire. (



P. 742)

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■

Tire types

●

Summer tires
Summer tires are high-speed performance tires best suited to highway

driving under dry conditions. Since summer tires do not have the same

traction performance as snow tires, summer tires are inadequate for

driving on snow-covered or icy roads. For driving on snow-covered

roads or icy roads, the use of snow tires is recommended. When install-

ing snow tires, be sure to replace all four tires.

●

All season tires
All season tires are designed to provide better traction in snow and to

be adequate for driving in most winter conditions as well as for use

year-round. All season tires, however, do not have adequate traction

performance compared with snow tires in heavy or loose snow. Also, all

season tires fall short in acceleration and handling performance com-

pared with summer tires in highway driving.

●

Snow tires
For driving on snow-covered roads or icy roads, we recommend using

snow tires. If you need snow tires, select tires of the same size, con-

struction and load capacity as the originally installed tires. Since your

vehicle has radial tires as original equipment, make sure your snow

tires also have radial construction. Do not install studded tires without

first checking local regulations for possible restrictions. Snow tires

should be installed on all wheels. (



P. 507)

■

If the tread on snow tires wears down below 0.16 in. (4 mm)

The effectiveness of the tires as snow tires is lost.

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■

Situations in which the tire pressure warning system may not oper-

ate properly

●

In the following cases, the tire pressure warning system may not operate

properly.
• If non-genuine Toyota wheels are used.

• When a replacement tire is used, the system may not operate cor-

rectly due to the structure of the replacement tire.

• A tire has been replaced with a tire that is not of the specified size.

• Tire chains etc. are equipped.

• An auxiliary-supported run-flat tire is equipped.

• If a window tint that affects the radio wave signals is installed.

• If there is a lot of snow or ice on the vehicle, particularly around the

wheels or wheel housings.

• If the tire inflation pressure is extremely higher than the specified

level.

• If wheel without the tire pressure warning valve and transmitter is

used.

• If the ID code on the tire pressure warning valves and transmitters is

not registered in the tire pressure warning computer.

●

Performance may be affected in the following situations.
• Near a TV tower, electric power plant, gas station, radio station, large

display, airport or other facility that generates strong radio waves or

electrical noise

• When carrying a portable radio, cellular phone, cordless phone or

other wireless communication device

●

When the vehicle is parked, the time taken for the warning to start or go

off could be extended.

●

When tire inflation pressure declines rapidly for example when a tire has

burst, the warning may not function.

■

The initialization operation

●

Make sure to carry out initialization after adjusting the tire inflation pres-

sure.

Also, make sure the tires are cold before carrying out initialization or tire

inflation pressure adjustment.

●

If you have accidentally turned the power switch off during initialization,

it is not necessary to press the reset switch again as initialization will

restart automatically when the power switch has been turned to ON

mode for the next time.

●

If you accidentally press the reset switch when initialization is not neces-

sary, adjust the tire inflation pressure to the specified level when the

tires are cold, and conduct initialization again.

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■

When initialization of the tire pressure warning system has failed

Initialization can be completed in a few minutes. However, in the following

cases, the settings have not been recorded and the system will not oper-

ate properly. If repeated attempts to record tire inflation pressure settings

are unsuccessful, have the vehicle inspected by your Toyota dealer.

●

When operating the initialization of the system, the tire pressure warning

light does not flash 3 times and the setting message does not appear on

the multi-information display.

●

After driving for a certain period of time since the initialization has been

completed, the warning light comes on after blinking for 1 minute.

■

Certifications for the tire pressure warning system



For vehicles sold in the U.S.A. and Hawaii

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

For vehicles sold in Canada

WARNING

■

When inspecting or replacing tires

Observe the following precautions to prevent accidents.

Failure to do so may cause damage to parts of the drive train as well as

dangerous handling characteristics, which may lead to an accident

resulting in death or serious injury.

●

Do not mix tires of different makes, models or tread patterns.

Also, do not mix tires of remarkably different treadwear.

●

Do not use tire sizes other than those recommended by Toyota.

●

Do not mix differently constructed tires (radial, bias-belted or bias-ply

tires).

●

Do not mix summer, all season and snow tires.

●

Do not use tires that have been used on another vehicle.

Do not use tires if you do not know how they were used previously.

■

When initializing the tire pressure warning system

Do not initialize the tire pressure warning system without first adjusting

the tire inflation pressure to the specified level. Otherwise, the tire pres-

sure warning light may not come on even if the tire inflation pressure is

low, or it may come on when the tire inflation pressure is actually nor-

mal.

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NOTICE

■

Repairing or replacing tires, wheels, tire pressure warning valves,

transmitters and tire valve caps

●

When removing or fitting the wheels, tires or the tire pressure warning

valves and transmitters, contact your Toyota dealer as the tire pres-

sure warning valves and transmitters may be damaged if not handled

correctly.

●

Make sure to install the tire valve caps. If the tire valve caps are not

installed, water could enter the tire pressure warning valves and the

tire pressure warning valves could be bound.

●

When replacing tire valve caps, do not use tire valve caps other than

those specified. The cap may become stuck.

■

To avoid damage to the tire pressure warning valves and transmit-

ters

When a tire is repaired with liquid sealants, the tire pressure warning

valve and transmitter may not operate properly. If a liquid sealant is

used, contact your Toyota dealer or other qualified service shop as soon

as possible. After use of liquid sealant, make sure to replace the tire

pressure warning valve and transmitter when repairing or replacing the

tire. (



P. 615)

■

Driving on rough roads

Take particular care when driving on roads with loose surfaces or pot-

holes.

These conditions may cause losses in tire inflation pressure, reducing

the cushioning ability of the tires. In addition, driving on rough roads

may cause damage to the tires themselves, as well as the vehicle’s

wheels and body.

■

If tire inflation pressure of each tire becomes low while driving

Do not continue driving, or your tires and/or wheels may be ruined.

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Tire inflation pressure

The recommended cold tire infla-
tion pressure and tire size are dis-
played on the tire and loading
information label. (



P. 737)

Tire inflation pressure

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7-3. Do-it-yourself maintenance

Tire valve
Tire pressure gauge

Remove the tire valve cap.
Press the tip of the tire pressure gauge onto the tire valve.
Read the pressure using the gauge gradations.
If the tire inflation pressure is not at the recommended level, adjust
the pressure.
If you add too much air, press the center of the valve to deflate.
After completing the tire inflation pressure measurement and
adjustment, apply soapy water to the valve and check for leakage.
Put the tire valve cap back on.

■

Tire inflation pressure check interval

You should check tire inflation pressure every two weeks, or at least once

a month.

Do not forget to check the spare.

■

Effects of incorrect tire inflation pressure

Driving with incorrect tire inflation pressure may result in the following:

●

Reduced fuel economy

●

Reduced driving comfort and poor handling

●

Reduced tire life due to wear

●

Reduced safety

●

Damage to the drive train

If a tire needs frequent inflating, have it checked by your Toyota dealer.

Inspection and adjustment procedure

1
2

1

2

3

4

5

6

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■

Instructions for checking tire inflation pressure

When checking tire inflation pressure, observe the following:

●

Check only when the tires are cold.

If your vehicle has been parked for at least 3 hours or has not been

driven for more than 1 mile or 1.5 km, you will get an accurate cold tire

inflation pressure reading.

●

Always use a tire pressure gauge.

It is difficult to judge if a tire is properly inflated based only on its appear-

ance.

●

It is normal for the tire inflation pressure to be higher after driving as

heat is generated in the tire. Do not reduce tire inflation pressure after

driving.

●

Never exceed the vehicle capacity weight.

Passengers and luggage weight should be placed so that the vehicle is

balanced.

WARNING

■

Proper inflation is critical to save tire performance

Keep your tires properly inflated.

If the tires are not properly inflated, the following conditions may occur

which could lead to an accident resulting in death or serious injury:

●

Excessive wear

●

Uneven wear

●

Poor handling

●

Possibility of blowouts resulting from overheated tires

●

Air leaking from between tire and wheel

●

Wheel deformation and/or tire damage

●

Greater possibility of tire damage while driving (due to road hazards,

expansion joints, sharp edges in the road, etc.)

NOTICE

■

When inspecting and adjusting tire inflation pressure

Be sure to put the tire valve caps back on.

If a valve cap is not installed, dirt or moisture may get into the valve and

cause an air leak, resulting in decreased tire inflation pressure.

626

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7-3. Do-it-yourself maintenance

Wheels

When replacing wheels, care should be taken to ensure that they are
equivalent to those removed in load capacity, diameter, rim width and
inset

*

.

Replacement wheels are available at your Toyota dealer.

*

: Conventionally referred to as “offset”.

Toyota does not recommend using the following:

●

Wheels of different sizes or types

●

Used wheels

●

Bent wheels that have been straightened

●

Use only Toyota wheel nuts and wrenches designed for use with
your aluminum wheels.

●

When rotating, repairing or changing your tires, check that the
wheel nuts are still tight after driving 1000 miles (1600 km).

●

Be careful not to damage the aluminum wheels when using tire
chains.

●

Use only Toyota genuine balance weights or equivalent and a plas-
tic or rubber hammer when balancing your wheels.

If a wheel is bent, cracked or heavily corroded, it should be
replaced. Otherwise, the tire may separate from the wheel or
cause a loss of handling control.

Wheel selection

Aluminum wheel precautions

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■

When replacing wheels

The wheels of your vehicle are equipped with tire pressure warning

valves and transmitters that allow the tire pressure warning system to

provide advance warning in the event of a loss in tire inflation pressure.

Whenever wheels are replaced, tire pressure warning valves and trans-

mitters must be installed. (



P. 615)

WARNING

■

When replacing wheels

●

Do not use wheels that are a different size from those recommended in

the Owner’s Manual, as this may result in a loss of handling control.

●

Never use an inner tube in a leaking wheel which is designed for a

tubeless tire. Doing so may result in an accident, causing death or seri-

ous injury.

■

When installing the wheel nuts

Never use oil or grease on the wheel bolts or wheel nuts.

Oil and grease may cause the wheel nuts to be excessively tightened,

leading to bolt or disc wheel damage. In addition, the oil or grease can

cause the wheel nuts to loosen and the wheel may fall off, causing an

accident and resulting in death or serious injury. Remove any oil or

grease from the wheel bolts or wheel nuts.

■

Use of defective wheels prohibited

Do not use cracked or deformed wheels.

Doing so could cause the tire to leak air during driving, possibly causing

an accident.

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7-3. Do-it-yourself maintenance

NOTICE

■

Replacing tire pressure warning valves and transmitters

●

Because tire repair or replacement may affect the tire pressure warn-

ing valves and transmitters, make sure to have tires serviced by your

Toyota dealer or other qualified service shop. In addition, make sure to

purchase your tire pressure warning valves and transmitters at your

Toyota dealer.

●

Ensure that only genuine Toyota wheels are used on your vehicle.

Tire pressure warning valves and transmitters may not work properly

with non-genuine wheels.

629

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7

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Replacing the tire

●

Stop the vehicle in a safe place on a hard, flat surface.

●

Set the parking brake.

●

Shift the shift position to P.

●

Stop the hybrid system.

When raising your vehicle with a jack, position the jack cor-
rectly.
Improper placement may damage your vehicle or cause injury.

Before jacking up the vehicle

630

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7-3. Do-it-yourself maintenance

Location of the jack and tools

Jack
Tool bag
Towing eyelet

Jack handle
Wheel nut wrench

1
2
3

4
5

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7

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WARNING

■

Using the tire jack

Observe the following precautions.

Improper use of the tire jack may cause the vehicle to suddenly fall off

the jack, leading to death or serious injury.

●

Only use the tire jack that comes with this vehicle for replacing a tire.

Do not use it on other vehicles, and do not use other tire jacks for

replacing tires on this vehicle.

●

Do not raise the vehicle while someone is inside.

●

Do not use the tire jack for any purpose other than replacing tires or

installing and removing tire chains.

●

Do not put any part of your body under the vehicle while it is supported

by the jack.

●

Do not start the hybrid system or drive the vehicle while the vehicle is

supported by the jack.

●

When raising the vehicle, do not put an object on or under the jack.

●

Do not raise the vehicle to a height greater than that required to

replace the tire.

●

Use a jack stand if it is necessary to get under the vehicle.

●

When lowering the vehicle, make sure that there is no-one near the

vehicle. If there are people nearby, warn them vocally before lowering.

■

When removing the jack from the storage location

The jack may be hot due to heat from the charging equipment during or

after charging. Please use gloves when handling the jack. If it is touched

with bare hands, it may result in burns.

●

Put the jack properly in its jack point.

(



P. 635)

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7-3. Do-it-yourself maintenance

Open the back door. (



P. 287)

Lift the deck under box cover
up and take out the tool bag.

Open the tool bag and then take out the jack handle and wheel nut
wrench.

After using the tools, stow them by reversing the steps listed.

Taking out the tools

1

2

3

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Pull the cover to disconnect the
tabs, and remove the cover.

Turn the portion

to loosen

the jack, and slowly take out the
jack.

Be careful when handling the

jack, as it may become hot

depending on conditions.

(



P. 631)

If the portion

can not be loos-

ened, turn it using the jack han-

dle.

Taking out the jack

1

2

A

A

634

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7-3. Do-it-yourself maintenance

Chock the tires.

Vehicles with the wheel orna-
ment: Remove the wheel orna-
ment using the wrench.

To prevent damage, cover the tip

of the wrench with a rag.

Slightly loosen the wheel nuts
(one turn).

Replacing a tire

1

Tire position

Wheel chock positions

Front

Left-hand side

Behind the rear right-hand side tire

Right-hand side

Behind the rear left-hand side tire

Rear

Left-hand side

In front of the front right-hand side tire

Right-hand side

In front of the front left-hand side tire

2

3

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7

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Turn the tire jack portion

by

hand until the center of the
recessed portion of the jack is
in contact with the center of the
jack point.

Assemble the jack handle and
the wheel nut wrench as shown
in the illustration.

Raise the vehicle until the tire is
slightly raised off the ground.

Remove all the wheel nuts and
the tire.

When resting the tire on the

ground, place the tire so that the

wheel design faces up to avoid

scratching the wheel surface.

Jack point

4

A

5

6

7

636

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7-3. Do-it-yourself maintenance

WARNING

■

Replacing a tire

●

Do not touch the disc wheels or the area around the brakes immedi-

ately after the vehicle has been driven.

After the vehicle has been driven the disc wheels and the area around

the brakes will be extremely hot. Touching these areas with hands, feet

or other body parts while changing a tire, etc. may result in burns.

●

Failure to follow these precautions could cause the wheel nuts to

loosen and the tire to fall off, resulting in death or serious injury.
• Have the wheel nuts tightened with a torque wrench to 76 ft•lbf

(103 N•m, 10.5 kgf•m) as soon as possible after changing wheels.

• When installing a tire, only use wheel nuts that have been specifi-

cally designed for that wheel.

• If there are any cracks or deformations in the bolt screws, nut

threads or bolt holes of the wheel, have the vehicle inspected by

your Toyota dealer.

• When installing the wheel nuts, be sure to install the wheel nuts with

the tapered ends facing inward. (



P. 627)

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Remove any dirt or foreign mat-
ter from the wheel contact sur-
face.

If foreign matter is on the wheel

contact surface, the wheel nuts

may loosen while the vehicle is in

motion, causing the tire to come

off.

Install the tire and loosely
tighten each wheel nut by hand
by approximately the same
amount.

Turn the wheel nuts until the

washers come into contact with

the disc wheel.

Lower the vehicle.

Firmly tighten each wheel nut
two or three times in the order
shown in the illustration.

Tightening torque:

76 ft•lbf (103 N•m, 10.5 kgf•m)

Installing the tire

1

Washer

Disc wheel

2

3

4

638

PRIUS PRIME_OM_OM47D71U_(U)

7-3. Do-it-yourself maintenance

Vehicles with the wheel orna-
ment: Reinstall the wheel orna-
ment.

Align the cutout of the wheel

ornament with the valve stem as

shown.

Stow the tire jack and all tools.

■

Jack point

■

Storing the jack

5

The mark indicating the jack point is

stamped on the underside of the vehi-

cle.

Fully insert the jack in the stowing posi-

tion, and turn the portion

to secure

the jack.

6

A

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WARNING

■

After using the tools and jack

Before driving, make sure all the tools and jack are securely in place in

their storage location to reduce the possibility of personal injury during a

collision or sudden braking.

NOTICE

■

When replacing the tires

When removing or fitting the wheels, tires or the tire pressure warning

valve and transmitter, contact your Toyota dealer as the tire pressure

warning valve and transmitter may be damaged if not handled correctly.

640

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7-3. Do-it-yourself maintenance

Air conditioning filter

Turn the power switch off.

Confirm that the charging connector is not connected. Also, do not use the
Remote Air Conditioning System during the procedure.

Open the front passenger’s door.

By keeping the door open, unexpected operation of the Remote Air Condi-
tioning System can be prevent. (



P. 536)

Open the glove box and slide
off the damper.

Push in each side of the glove
box to disconnect the claws,
and then slowly and fully open
the glove box while supporting
it.

The air conditioning filter must be changed regularly to maintain
air conditioning efficiency.

Replacing the air conditioning filter

1

2

3

4

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With the glove box fully open,
slightly lift up the glove box and
pull toward the seat to detach
the bottom of the glove box.

Do not use excessive force if the
glove box does not detach when
lightly pulled. Instead, pull toward
the seat while slightly adjusting the
height of the glove box.

Remove the filter cover.

Unlock the filter cover.
Move the filter cover in the
direction of the arrow, and then
pull it out of the claws.

Remove the filter case.

Remove the air conditioning fil-
ter from the filter case and
replace it with a new one.

The “



UP” marks shown on the fil-

ter should be pointing up.

When installing, reverse the steps listed.

5

6

1
2

7

8

9

642

PRIUS PRIME_OM_OM47D71U_(U)

7-3. Do-it-yourself maintenance

■

Checking interval

Inspect and replace the air conditioning filter according to the maintenance
schedule. In dusty areas or areas with heavy traffic flow, early replacement
may be required. (For scheduled maintenance information, please refer to the
“Scheduled Maintenance Guide” or “Owner’s Manual Supplement”.)

■

If air flow from the vents decreases dramatically

The filter may be clogged. Check the filter and replace if necessary.

WARNING

■

When replacing the air conditioning filter

Observe the following precautions. Failure to do so may result in the air
conditioning system operating during the procedure, possibly resulting in
injury.

●

Check that the charging connector is not connected
The air conditioning may operate due to the “Climate Prep” (



P. 157) or

“Traction Battery Cooler” (



P. 136) setting.

●

Do not use the Remote Air Conditioning System

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NOTICE

■

When using the air conditioning system

Make sure that a filter is always installed.
Using the air conditioning system without a filter may cause damage to the
system.

■

When removing the glove box

Always follow the specified procedure to remove the glove box (



P. 640). If

the glove box is removed without following the specified procedure, the
hinge of the glove box may become damaged.

■

To prevent damage to the filter cover

When moving the filter cover in the direc-
tion of arrow to release the fitting, pay
attention not to apply excessive force to
the claws. Otherwise, the claws may be
damaged.

644

PRIUS PRIME_OM_OM47D71U_(U)

7-3. Do-it-yourself maintenance

Wiper insert replacement

While securely supporting the
wiper blade connection by
hand, press the lock knob to
release the lock, and then pull
out the wiper blade.

Align the wiper blade with the
connecting portion of the wiper
arm, and then slide it in the
direction it was removed from.

After installing the wiper blade,
check that the connection is
locked.

When replacing the wiper insert, perform the following proce-
dure.

Windshield wiper blade removal and installation

1

2

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Pull the wiper insert until it pro-
trudes from the slit on the back
of the wiper blade.

Pull out the end of the wiper
insert from the slit, and then pull
out the rest of the wiper insert.

When installing a new wiper
insert, perform the procedure in
reverse.

After installation, check that the
end of the wiper insert is installed
all the way to the end of the cap.

Wiper insert replacement

1

2

3

646

PRIUS PRIME_OM_OM47D71U_(U)

7-3. Do-it-yourself maintenance

■

Wiper blade and wiper insert handling

Improper handling may result in damage to the wiper blades or wiper insert. If
you have any concerns about replacing the wiper blades or wiper insert your-
self, contact your Toyota dealer.

■

Wiper blade cap

The cap cannot be removed, as it is integrated with the front wiper blade.

NOTICE

■

To prevent damage

●

Be careful not to damage the claws when replacing the wipers.

●

After the wiper blade is removed from the wiper arm, place a cloth, etc.,
between the windshield and wiper arm to prevent damage to the wind-
shield.

●

Be sure not to pull excessively on the wiper insert.

647

PRIUS PRIME_OM_OM47D71U_(U)

7-3. Do-it-yourself maintenance

7

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Electronic key battery

●

Flathead screwdriver

●

Lithium battery CR2032

Release the lock and take out
the mechanical key.

Remove the cover.

Use a screwdriver of an appropri-
ate size. Forcedly prying may
cause the cover damaged.
To prevent damage to the key,
cover the tip of the screwdriver with
a rag.

Replace the battery with a new one if it is depleted.

You will need the following items:

Replacing the battery

1

2

648

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7-3. Do-it-yourself maintenance

Remove the depleted battery.

When removing the cover, if the
battery cannot be seen due to the
electronic key module attaching to
the upper cover, remove the elec-
tronic key module from the cover
so that the battery is visible as
shown in the illustration.
When removing the battery, use a
screwdriver of an appropriate size.
Insert a new battery with the “+” terminal facing up.

When installing, reverse the steps listed.

■

Use a CR2032 lithium battery

●

Batteries can be purchased at your Toyota dealer, local electrical appliance
shops or camera stores.

●

Replace only with the same or equivalent type recommended by the manu-
facturer.

●

Dispose of used batteries according to the local laws.

■

If the electronic key battery is depleted

The following symptoms may occur:

●

The smart key system and wireless remote control will not function properly.

●

The operational range will be reduced.

3

4

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WARNING

■

Battery precautions

Observe the following precautions.
Failure to do so may result in death or serious injury.

●

Do not swallow the battery. Doing so may cause chemical burns.

●

A coin battery or button battery is used in the electronic key. If a battery is
swallowed, it may cause severe chemical burns in as little as 2 hours and
may result in death or serious injury.

●

Keep away new and removed batteries from children.

●

If the cover cannot be firmly closed, stop using the electronic key and stow
the key in the place where children cannot reach, and then contact your
Toyota dealer.

●

If you accidentally swallow a battery or put a battery into a part of your
body, get emergency medical attention immediately.

■

To prevent battery explosion or leakage of flammable liquid or gas

●

Replace the battery with a new battery of the same type. If a wrong type of
battery is used, it may explode.

●

Do not expose batteries to extremely low pressure due to high altitude or
extremely high temperatures.

●

Do not burn, break or cut a battery.

NOTICE

■

For normal operation after replacing the battery

Observe the following precautions to prevent accidents:

●

Always work with dry hands.
Moisture may cause the battery to rust.

●

Do not touch or move any other component inside the remote control.

●

Do not bend either of the battery terminals.

650

PRIUS PRIME_OM_OM47D71U_(U)

7-3. Do-it-yourself maintenance

Checking and replacing fuses

Turn the power switch off.

Confirm that the charging connector is not connected. Also, do not use the
Remote Air Conditioning System during the procedure.

Open the fuse box cover.



Engine compartment type A fuse box

While pushing the 2 claws, lift
up the cover.

When closing the cover, make
sure to attach the 2 claws.



Engine compartment type B fuse box

While pushing the 3 claws, lift
up the cover.

When closing the cover, make
sure to attach the 3 claws.



Left side instrument panel

Remove the lid.

Make sure to press the claw
during removal or installation.

If any of the electrical components do not operate, a fuse may
have blown. If this happens, check and replace the fuses as nec-
essary.

1

2

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Remove the fuse.
Only type A fuse can be
removed using the pullout tool.

Check if the fuse is blown.

Normal fuse
Blown fuse

Replace the blown fuse with a new fuse of an appropriate amperage rat-
ing. The amperage rating can be found on the fuse box lid.

3

4

1
2



Type A



Type B



Type C

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7-3. Do-it-yourself maintenance

■

After a fuse is replaced

●

If the lights do not turn on even after the fuse has been replaced, a bulb may
need replacement. (



P. 655)

●

If the replaced fuse blows again, have the vehicle inspected by your Toyota
dealer.

■

If there is an overload in a circuit

The fuses are designed to blow, protecting the wiring harness from damage.

■

When replacing light bulbs

Toyota recommends that you use genuine Toyota products designed for this
vehicle. Because certain bulbs are connected to circuits designed to prevent
overload, nongenuine parts or parts not designed for this vehicle may be
unusable.

WARNING

■

To prevent system breakdowns and vehicle fire

Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or
injury.

●

Never use a fuse of a higher amperage rating than that indicated, or use
any other object in place of a fuse.

●

Always use a genuine Toyota fuse or equivalent.
Never replace a fuse with a wire, even as a temporary fix.

●

Do not modify the fuses or fuse boxes.

NOTICE

■

Before replacing fuses

Have the cause of electrical overload determined and repaired by your
Toyota dealer as soon as possible.

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Headlight aim

Adjustment bolt A
Adjustment bolt B

Make sure the vehicle has a full tank of gasoline and the area
around the headlight is not deformed.
Park the vehicle on level ground.
Sit in the driver’s seat.
Bounce the vehicle several times.

Vertical movement adjusting bolts

1
2

Before checking the headlight aim

1

2

3

4

654

PRIUS PRIME_OM_OM47D71U_(U)

7-3. Do-it-yourself maintenance

Using a Phillips-head screw-
driver, turn bolt A in either direc-
tion.

Remember the turning direction
and the number of turns.

Turn bolt B the same number of
turns and in the same direction
as step

.

If the headlight cannot be adjusted
using this procedure, take the vehi-
cle to your Toyota dealer to adjust
the headlight aim.

Adjusting the headlight aim

1

2

1

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7

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Light bulbs

Check the wattage of the light bulb to be replaced. (



P. 738)

Back-up light

You may replace the following bulbs by yourself. The difficulty
level of replacement varies depending on the bulb. If necessary
bulb replacement seems difficult to perform, contact your
Toyota dealer.
For more information about replacing other light bulbs, contact
your Toyota dealer.

Preparing for light bulb replacement

Bulb locations

656

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7-3. Do-it-yourself maintenance

■

Back-up lights

Remove the 2 clips that secure the lower portion of the cover at
the back of the rear tire.
Pull out the center portion of
the clip to unlock using a flat-
head screwdriver, and then
pull it to remove.

Remove the 3 clips that secure the upper portion of the cover.

Turn the clip counterclockwise to remove.
Pull out the center portion of the clip to unlock using a flathead
screwdriver, and then pull it to remove.
Pull out the center portion of the clip to unlock using a flathead
screwdriver, and then pull it to remove.

Replacing light bulbs

1

2

1
2

3

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7

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Remove the cover end and
pull the cover toward the
front of the vehicle to make a
gap between the cover and
rear bumper.

Remove the clip inside of the cover, and remove the cover.
Pull out the center portion of
the clip to unlock using a flat-
head screwdriver, and then
pull it to remove.

Turn the bulb base counter-
clockwise, and then remove
the light bulb.

To remove the light bulb, insert a
hand from the gap between the
rear tire and rear bumper.

3

4

5

658

PRIUS PRIME_OM_OM47D71U_(U)

7-3. Do-it-yourself maintenance

Install a new light bulb then
install the bulb base to the
light unit by inserting it and
turning the bulb base clock-
wise.

Reinstall the cover to the its original position, and attach the clip
inside of the cover.
Attach the clip on the cover,
then press the center portion
of the clip to lock.

Reinsert the cover end to the
rear bumper.

Make sure to secure the 2 tabs
on the cover end.

6

7

8

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Reinsert the 3 clips to the upper portion of the cover.

Turn the clip clockwise to lock.
Attach the clip on the cover, and then press the center portion
of the clip to lock.
Attach the clip on the cover, and then press the center portion
of the clip to lock.

Reinsert the 2 clips to the lower portion of the cover.
Attach the clip on the cover,
and then press the center
portion of the clip to lock.

9

1
2

3

10

660

PRIUS PRIME_OM_OM47D71U_(U)

7-3. Do-it-yourself maintenance

■

Replacing the following bulbs

If any of the lights listed below has burnt out, have it replaced by
your Toyota dealer.

●

Headlights and daytime running lights

●

Front side marker lights

●

Parking lights

●

Fog lights (if equipped)

●

LED accent lights (if equipped)

●

Front turn signal lights

●

Rear turn signal lights

●

Rear side marker lights

●

Tail lights

●

Stop lights

●

High mounted stoplight

●

License plate lights

■

LED lights

The lights other than the back-up lights each consist of a number of LEDs. If
any of the LEDs burn out, take your vehicle to your Toyota dealer to have the
light replaced.

■

Condensation build-up on the inside of the lens

Temporary condensation build-up on the inside of the lens does not indicate a
malfunction. Contact your Toyota dealer for more information in the following
situations:

●

Large drops of water have built up on the inside of the lens.

●

Water has built up inside the light.

■

When replacing light bulbs

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WARNING

■

Replacing light bulbs

●

Be sure to stop the hybrid system and turn off the lights. Do not attempt to
replace the bulb immediately after turning off the lights.
The bulbs become very hot and may cause burns.

●

Do not touch the glass portion of the light bulb with bare hands. When it is
unavoidable to hold the glass portion, use and hold with a clean dry cloth
to avoid getting moisture and oils on the bulb.
Also, if the bulb is scratched or dropped, it may blow out or crack.

●

Fully install light bulbs and any parts used to secure them. Failure to do so
may result in heat damage, fire, or water entering the light unit. This may
damage the back-up lights or cause condensation to build up on the lens.

●

Do not attempt to repair or disassemble light bulbs, connectors, electric
circuits or component parts.
Doing so may result in death or serious injury due to electric shock.

●

Do not replace the right-hand back-up light immediately after the vehicle
has been driven.
After the vehicle has been driven the exhaust pipe will be extremely hot,
and touching the exhaust pipe may result in burns.

●

Use gloves and other protection to prevent injuries on vehicle parts.
There is the danger of being injured on the edges of parts.

■

To prevent damage or fire

●

Make sure bulbs are fully seated and locked.

●

Check the wattage of the bulb before installing to prevent heat damage.

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7-3. Do-it-yourself maintenance