Get Do-it-yourself maintenance -> Tires Guide for Toyota Prius 4 Door Fourth Generation (2016-2022)

520

6-3. Do-it-yourself maintenance

Tires

Replace or rotate tires in accordance with maintenance sched-

ules and treadwear.

Checking 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.

Check the spare tire (if equipped) condition and pressure if not

rotated.

1

2

3

New tread

Worn tread

Treadwear indicator

The location of treadwear indicators is shown by a “TWI” or “” mark,

etc., molded into the sidewall of each tire.

Replace the tires if the treadwear indicators are showing on a tire.

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6-3. Do-it-yourself maintenance

Tire rotation

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 rota-

tion.

 Vehicles without full-size spare  Vehicles with full-size spare

tire

Front

6

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6-3. Do-it-yourself maintenance

Tire pressure warning system

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. 583)

The compact spare tire is not equipped with a tire pressure warning

valve and transmitter.

◆ 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. 523)

◆ Initializing the tire pressure warning system

■ The tire pressure warning system must be initialized when the

tire inflation pressure is changed such as when changing trav-

elling speed or load weight.

When the tire pressure warning system is initialized, the current tire

inflation pressure is set as the benchmark pressure.

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6-3. Do-it-yourself maintenance

■ How to initialize the tire pressure warning system

1

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

Initialization cannot be performed while the vehicle is moving.

2

Adjust the tire inflation pressure to the specified cold tire inflation

pressure level. (P. 660)

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.

3

4

Turn the power switch to ON mode.

Switch the multi-information display to the

screen.

(P. 149)

5

6

7

Press

(Vehicle Settings)”, and then press

Press or of the meter control switches, select “Mainte-

nance System”, and then press

or

of the meter control switches, select “

.

Press

or

of the meter control switches, select “TPMS”,

.

6

and then press

Press and hold

8

9

.

When initialization com-

pletes, a message is dis-

played

on

the

multi-

information display and the

tire pressure warning light

illuminates.

Until Complete

◆ 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.

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6-3. Do-it-yourself maintenance

■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. 666)

BTO62EP049

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6-3. Do-it-yourself maintenance

■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. 418)

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

The effectiveness of the tires as snow tires is lost.

6

■Low profile tires (vehicles with 215/45R17 tires)

Generally, low profile tires will wear more rapidly and tire grip perfor-

mance will be reduced on snowy and/or icy roads when compared to

standard tires.

Be sure to use snow tires or tire chains on snowy and/or icy roads and

drive carefully at a speed appropriate for road and weather conditions.

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6-3. Do-it-yourself maintenance

■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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6-3. Do-it-yourself maintenance

■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.

■Certification for the tire pressure warning system

 For vehicles sold in the U.S.A., Hawaii, American Samoa, Guam,

Saipan and Puerto Rico

6

 For vehicles sold in Canada

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6-3. Do-it-yourself maintenance

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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6-3. Do-it-yourself maintenance

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. 522)

■Driving on rough roads

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

holes.

6

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.

■Low profile tires (vehicles with 215/45R17 tires)

Low profile tires may cause greater damage than usual to the wheel

when receiving impact from the road surface. Therefore pay attention to

the following:

●Be sure to use proper tire inflation pressure. If tires are under-inflated,

they may be damaged more severely.

●Avoid pot holes, uneven pavement, curbs and other road hazards.

Failure to do so can lead to severe tire and wheel damage.

■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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Do-it-yourself maintenance -> Tires for Your Toyota Prius 4 Door Fourth Generation (2016-2022)

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