tire pressure reset TOYOTA TUNDRA 2021 Owners Manual (in English)

24Pictorial index
Emergency flasher switch . . . . . . . . . . . . . . . . . . . . . . . . . . P. 474
Front-wheel drive control switch
* . . . . . . . . . . . . . . . . . . . . P. 315
Tire pressure warning reset switch . . . . . . . . . . . . . . . . . . . P. 428
USB port
*2
USB charging ports . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 382
VSC off switch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 318, 323
Intuitive parking assist switch
*1 . . . . . . . . . . . . . . . . . . . . . P. 298
Power outlet . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . P. 379
*1: If equipped
*2: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.
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1152. Instrument cluster
2
Instrument cluster
■Setting items
●“Vehicle Settings” and “Meter Settings” setting items are not s electable
during driving and cannot be operated.
Also, the settings screen is temporarily canceled in the follow ing situations.
• When a warning message appears.
• When the vehicle begins to move.
● Settings for functions not equipped to the vehicle are not displayed.
● When a function is turned off, the related settings for that fu nction are not
selectable.
■ Pop-up display
In some situations, such as when a switch operation is performe d, a pop-up
display will be temporarily displayed on the multi-information display.
■ When disconnecting and reco nnecting battery terminals
The drive information will be reset.
■ Trip summary display
When the engine switch is turned off, each of the following wil l be displayed
on the multi-information display, and will clear after approximately 30 sec-
onds.
● Distance traveled
● Average fuel consumption
● Driving range
■ Tire inflation pressure
●It may take a few minutes to display the tire inflation pressur e after the
engine switch is turned to ON. It may also take a few minutes t o display the
tire inflation pressure after inflation pressure has been adjusted.
● “---” may be displayed if the tire position information cannot be determined
due to unfavorable radio wave conditions.
● Tire inflation pressure changes with temperature. The displayed values may
also be different from the values measured using a tire pressur e gauge.
■ Liquid crystal display
Small spots or light spots may appear on the display. This phen omenon is
characteristic of liquid crystal displays, and there is no prob lem continuing to
use the display.

4286-3. Do-it-yourself maintenance
■How to initialize the tire pressure warning systemPark 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 i nflation
pressure level. ( P. 548)
Make sure to adjust the tire pre ssure to the specified cold tire infla-
tion pressure level. The tire pressure warning system will oper ate
based on this pr essure level.
Turn the engine switch to ON.
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 ea ch 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. 434)
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4296-3. Do-it-yourself maintenance
6
Maintenance and care
◆Registering ID codes
Every tire pressure warning valve and transmitter has a unique ID
code. When replacing a tire pressure warning valve and transmit ter,
it is necessary to register the ID codes.
To register the ID codes, perf orm 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 t han approximately 30 minutes in
certain situations, such as when the vehicle is stopped for a long
time at traffic lights, etc. (→P. 434)
After registering the ID codes, make sure to initialize the tir e
pressure warning system. (→P. 427)
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4336-3. Do-it-yourself maintenance
6
Maintenance and care
■The initialization operation
●Make sure to carry out initialization after adjusting the tire inflation pres-
sure.
Also, make sure the tires are co ld before carrying out initialization or tire
inflation pressure adjustment.
●If you have accidentally turned the engine switch off during in itialization,
it is not necessary to press the reset swit ch again as initialization will
restart automatically when the engine switch has been turned to ON 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 cond uct initialization again.
●While the position of each tire is being determined and the inf lation pres-
sures are not being displayed on the multi-information display, if the
inflation pressure of a tire drops, the tire pressure warning l ight will come
on.
■Warning performance of the tire pressure warning system
The warning of the tire pressu re warning system will change in accor-
dance with the conditions under which it was initialized. For t his reason,
the system may give a warning even if the tire pressure does no t reach a
low enough level, or if the pressure is higher than the pressur e that was
adjusted to when the sys tem was initialized.

4346-3. Do-it-yourself maintenance
■When initialization of the tire pressure warning system has fai led
Initialization may take longer to complete if the vehicle is driven on an
unpaved road. When performing ini tialization, drive on a paved road if
possible. Depending on the driving environment and condition of the tires,
initialization will be completed i n approximately 10 to 30 minutes. If initial-
ization is not complete after dr iving approximately 10 to 30 mi nutes, con-
tinue driving for a while.
If the inflation pressure of each tire is not displayed after d riving for
approximately 1 hour, perf orm the following procedure.
●Park the vehicle in a safe place for approximately 20 minutes. Then
drive straight (with occasional left and right turns) at approx imately
25 mph (40 km/h) or more for approximately 10 to 30 minutes.
However, in the following situatio ns, 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, t he tire pressure warning light blinks for
1 minute then stays on while driving about 20 minutes.
If the inflation pressure of eac h tire is still not displayed, have the vehicle
inspected by you r Toyota dealer.

4406-3. 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 accide nt
resulting in death o r serious injury.
●Do not mix tires of different ma kes, models or tread patterns.
Also, do not mix tires of re markably different treadwear.
●Do not use tire sizes other th an those recommended by Toyota.
●Do not mix differently constructed tires (radial, bias-belted o r bias-ply
tires).
●Do not mix summer, all season and snow tires.
●Do not use tires that have b een used on another vehicle.
Do not use tires if you do not kn ow how they were used previous ly.
■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. O therwise, the
tire pressure warning light may not come on even if the tire in flation
pressure is low, or it may come on when the tire inflation pres sure is
actually normal.

4897-2. Steps to take in an emergency
7
When trouble arises
■SRS warning light
This warning light system monitors the airbag sensor assembly, front impact
sensors, side impact sensors (front door), side impact sensors (rear), driver’s
seat position sensor, driver’s seat belt buckle switch, front passenger occu-
pant classification system (ECU and sensors), “AIR BAG ON” indi cator light,
“AIR BAG OFF” indicator light, front passenger’s seat belt buck le switch, seat
belt pretensioners assemblies, airbags, interconnecting wiring and power
sources. ( P. 42)
■ Front passenger detection sensor, seat belt reminder and warnin g
buzzer
● If luggage is placed on the front passenger seat, the front pas senger detec-
tion sensor may cause the warning light to flash and the warnin g buzzer to
sound even if a passenger is not sitting in the seat.
● If a cushion is placed on the seat, the sensor may not detect a passenger,
and the warning light may not operate properly.
■ If the malfunction indicator lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
● Is the fuel tank cap loose?
If it is, tighten it securely.
The light will go off after several driving trips.
If the light does not go off even after several trips, contact your Toyota dealer
as soon as possible.
■
When the tire pressure warning light comes on
Check the tire inflation pressure and adjust to the appropriate level. Push-
ing the tire pressur e warning reset switch will not turn off the tire pressure
warning light.

4967-2. Steps to take in an emergency
Indicates that all maintenance according to the
driven distance on the maintenance schedule
*
should be performed soon.
Comes on approximately 4500 miles (7200 km)
after the message has been reset.
If necessary, perfo rm maintenance.
Indicates that all maintenance is required to cor-
respond to the driven distance on the mainte-
nance schedule
*.
Comes on approximately 5000 miles (8000 km)
after the message has been reset.
(The indicator will not work properly unless the
message has been reset.)
 Perform the necessary maintenance.
Please reset the message after the mainte-
nance is performed. ( P. 407)
Indicates a malfunction in the tire pressure warn-
ing system.
The tire pressure warning light comes on after
flashing for 1 minute.
 Have the vehicle inspected by your Toyota
dealer.
Indicates a malfunction in the cruise control sys-
tem.
• Press the “ON-OFF” button once to deacti-
vate the system, and then press the button
again to reactivate the system.
• A buzzer also sounds.
 Have the vehicle inspected by your Toyota
dealer immediately.
Indicates a malfunction in the Brake Override
System.
A buzzer also sounds.
 Have the vehicle inspected by your Toyota
dealer immediately.
Indicates that the accelerator and brake pedals
are being depressed simultaneously, and the
Brake Override System is operating. ( P. 185)
 Release the accelerator pedal and depress
the brake pedal.
Warning messageDetails/Actions
Maintenance
Required Soon
Maintenance Required
Visit Your Dealer
Tire Pressure Warning System
Malfunction, Visit Your Dealer
(Flashes
and then
remains on)
Cruise Control Malfunction
Visit Your Dealer
Brake Override Malfunction
Visit Your Dealer
Accelerator and Brake Pedals
Pressed
Simultaneously

609Alphabetical index
Outside rear view mirror defoggers switch ........ 342, 349
Outside rear view mirror
switches.............................. 167
Personal/interior lights main switch......................... 357
Power back window
switch ................................. 176
Power door lock switch ......... 130
Power window switches ........ 172
Seat heater switches ............ 354
Seat ventilator switches ........ 354
Tilt and telescopic steering control switch ........ 162
Tire pressure warning reset
switch ................................. 428
TOW/HAUL switch ................ 228
Turn signal lights................... 232
VSC off switch ......................... 318, 323
Window lock switch............... 172
Windshield wiper de-icer switch ............. 343, 350
Windshield wipers and washer switch .............. 245 Tachometer .............................. 105
Tail lights.................................. 234
Light switch ........................... 234
Replacing light bulbs ............ 468
Wattage ................................ 550
Tailgate Removing the tailgate ........... 134
Tailgate ................................. 133
Talk switch
*
Telephone switches*
Theft deterrent system Alarm ...................................... 95
Engine immobilizer system ..... 85
Tire inflation pressure............. 442 Maintenance data ................. 548
Warning light......................... 487
Tire information ....................... 554 Glossary ............................... 559
Size....................................... 555
Tire identification number ..... 555
Uniform Tire Quality Grading .............................. 557
Tire pressure warning system.................................... 427 Initializing .............................. 428
Installing tire pressure
warning valves and
transmitters ........................ 427
Registering ID codes ............ 429
Tire pressure warning reset
switch ................................. 428
Warning light......................... 487
T
*: Refer to “NAVIGATION AND MULTIMEDIA SYSTEM OWNER
’S MANUAL”.