Toyota Tundra (2019 year). Instruction — part 32

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How to initialize the tire pressure warning system

Park the vehicle in a safe place and turn the engine 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. 606)

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 engine switch to the “ON” position.
Press and hold the tire pres-
sure warning reset switch
until the tire pressure warn-
ing light blinks 3 times.

A message is displayed on the

multi-information display. Also,

“--” is displayed for inflation

pressure of each tire on the

multi-information display while

the tire pressure warning sys-

tem determines the position.

Drive straight (with occasional left and right turns) at approxi-
mately 25 mph (40 km/h) or more for approximately 10 to 30 min-
utes.

Initialization is complete when the position of each tire is determined

and the inflation pressure of each tire is displayed on the multi-infor-

mation display.
Initialization may take longer than approximately 30 minutes in cer-

tain situations, such as when the vehicle is stopped for a long time at

traffic lights, etc. (

P. 503)

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◆

Registering ID codes

Every tire pressure warning valve and transmitter has a unique ID
code. When replacing a tire pressure warning valve and transmitter,
it is necessary to register the ID codes.
To register the ID codes, perform the following procedure:

Press the tire pressure warn-
ing reset switch 3 times until
the tire pressure warning
light blinks slowly 3 times.

Then a message will be dis-

played on multi-information

display. When registration is

being performed, the tire pres-

sure warning light will blink for

approximately 1 minute then

illuminate and “--” will be dis-

played for the inflation pres-

sure of each tire on the multi-

information display.

Drive straight (with occasional left and right turns) at approxi-
mately 25 mph (40 km/h) or more for approximately 10 to 30 min-
utes.
Registration is complete when the tire pressure warning light
turns off and the inflation pressure of each tire is displayed on the
multi-information display.
Registration may take longer than approximately 30 minutes in
certain situations, such as when the vehicle is stopped for a long
time at traffic lights, etc. (→P. 503)
After registering the ID codes, make sure to initialize the tire
pressure warning system. (→P. 496)

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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.

■

When replacing the 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 number given by dividing the maximum load by 1.10 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. 613)

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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. 311)

■

Initializing the tire pressure warning system
Initialize the system with the tire inflation pressure adjusted to the speci-

fied level.

■

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.

• A tire has been replaced with a tire that is not an OE (Original Equip-

ment) 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 tranmitter is

used.

• If the ID code on the tire pressure warning valves and transmitter 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

If tire position information is not correctly displayed due to the radio

wave conditions, the display may be corrected by driving and changing

the radio wave conditions.

●

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.

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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 engine switch off during initialization,

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

restart automatically when the engine switch has been turned to the

“ON” position 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.

●

While the position of each tire is being determined and the inflation pres-

sures are not being displayed on the multi-information display, if the

inflation pressure of a tire drops, the tire pressure warning light will come

on.

■

Warning performance of the tire pressure warning system
The warning of the tire pressure warning system will change in accor-

dance with the conditions under which it was initialized. For this reason,

the system may give a warning even if the tire pressure does not reach a

low enough level, or if the pressure is higher than the pressure that was

adjusted to when the system was initialized.

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When initialization of the tire pressure warning system has failed
Initialization may take longer to complete if the vehicle is driven on an

unpaved road. When performing initialization, drive on a paved road if

possible. Depending on the driving environment and condition of the tires,

initialization will be completed in approximately 10 to 30 minutes. If initial-

ization is not complete after driving approximately 10 to 30 minutes, con-

tinue driving for a while.
If the inflation pressure of each tire is not displayed after driving for

approximately 1 hour, perform the following procedure.

●

Park the vehicle in a safe place for approximately 20 minutes. Then

drive straight (with occasional left and right turns) at approximately

25 mph (40 km/h) or more for approximately 10 to 30 minutes.

However, in the following situations, the tire inflation pressure will not be

recorded and the system will not operate properly. Perform initialization

again.

●

When operating the tire pressure warning reset switch, the tire pressure

warning light does not blink 3 times.

●

After performing initialization, the tire pressure warning light blinks for

1 minute then stays on while driving about 20 minutes.

If the inflation pressure of each tire is still not displayed, have the vehicle

inspected by your Toyota dealer.

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Tire pressure warning system certification



For vehicles sold in the U.S.A.

<Sensor, Receiver>
TRW Automotive
Tire Pressure Monitoring Sensor
FCC ID: GQ4-72T
FCC ID: GQ4-49R
This device complies with Part 15 of the FCC Rules. Operation is subject

to the following two conditions: (1) This device may not cause harmful

interference, and (2) This device must accept any interference received,

including interference that may cause undesired operation of this device.

WARNING: Changes or modifications not expressly approved by TRW

Automotive U.S. LLC could void the user’s authority to operate the equip-

ment.



For vehicles sold in Canada

<Sensor, Receiver>
TRW Automotive
Tire Pressure Monitoring Sensor
Model: 335098
IC: 1470A-53T
MADE IN U.S.A
This device complies with Industry Canada license-exempt RSS stan-

dard(s). Operation is subject to the following two conditions: (1) This

device may not cause harmful interference, and (2) This device must

accept any interference received, including interference that may cause

undesired operation of this device.
Le présent appareil est conforme aux CNR d’Industrie Canada applica-

bles aux appareils radio exempts de licence. L’exploitation est autorisée

aux deux conditions suivantes : 1. L’appareil ne doit pas produire de

brouillage. 2. L’utilisateur de l’appareil doit accepter tout brouillage

radioélectrique subi, même si le brouillage est susceptible d’en comprom-

ettre le fonctionnement.
WARNING: Changes or modifications not expressly approved by TRW

Automotive U.S. LLC could void the user’s authority to operate the equip-

ment.

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NOTE

Operation is subject to the following two conditions: (1) this device may

not cause interference, and (2) this device must accept any interference,

including interference that may cause undesired operation of the device.
NOTE

L’utilisation de ce dispositif est autorisée seulement aux deux conditions

suivantes : (1) il ne doit pas produire de brouillage, et (2) l’utilisateur du

dispositif doit être prêt à accepter tout brouillage radioélectrique reçu,

même si ce brouillage est susceptible de compromettre le fonctionne-

ment du dispositif.

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 operate the tire pressure warning reset switch without first

adjusting the tire inflation pressure to the specified level. Otherwise, the

tire pressure 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 normal.

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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. Make sure to replace the tire pressure warning valve and

transmitter when replacing the tire. (

P. 496)

■

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. 606)

Tire inflation pressure

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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

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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.

●

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.

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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 (if equipped)

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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. 496)

■

When installing the wheel ornament (on some models)

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.

Align the notch of the wheel and orna-

ment.

●

Be sure to install the wheel nuts with

the tapered ends facing inward.

Installing the nuts with the tapered

ends facing outward can cause the

wheel to break and eventually cause

the wheel to come off while driving,

which could lead to an accident

resulting in death or serious injury.

Tapered

portion

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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.