2020 TOYOTA TUNDRA warning lights

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. 546)
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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4706-3. Do-it-yourself maintenance
WARNING
■Replacing light bulbs
● Turn off the lights. Do not attempt to replace the bulb immedia tely 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 clea n 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 headligh t unit. This
may damage the lights or cause condensation to build up on the lens.
● Do not attempt to repair or disassemble the bulb, bulb base, el ectrical wir-
ing, or subcomponents.
Doing so could result in electric shock and serious injury.
■ 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.

4897-2. Steps to take in an emergency
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When trouble arises
WARNING
■If both the ABS and the brake s ystem warning lights remain on
Stop your vehicle in a safe place immediately and contact your To y o t a
dealer. The vehicle will become extremely unstable during braki ng, and the
ABS system may fail, which could cause an accident resulting in death or
serious injury.
■ If the tire pressure warning light comes on
Be sure to observe the following precautions. Failure to do so could cause a
loss of vehicle control and result in death or serious injury.
● Stop your vehicle in a safe place as soon as possible. Adjust the tire infla-
tion pressure immediately.
● If the tire pressure warning light comes on even after tire inf lation pressure
adjustment, it is probable that you have a flat tire. Check the tires. If a tire
is flat, change it with the spare tire and have the flat tire repaired by the
nearest Toyota dealer.
● Avoid abrupt maneuvering and braking. If the vehicle tires deteriorate, you
could lose control of the steering wheel or the brakes.
■ If a blowout or sudden air leakage should occur
The tire pressure warning system may not activate immediately.
■
Maintenance of the tires
Each tire, including the spare (if provided), should be checked monthly
when cold and inflated to the inflation pressure recommended by the
vehicle manufacturer on the vehicle placard or tire inflation p ressure
label (tire and load information label). (If your vehicle has t ires of a dif-
ferent size than the size indica ted on the vehicle placard or tire inflation
pressure label [tire and load information label], you should de termine
the proper tire inflation p ressure for those tires.)
As an added safety feature, your vehicle has been equipped with a tire
pressure monitoring system (TPMS -tire pressure warning system) that
illuminates a low tire pressure telltale (tire pressure warning light) when
one or more of your tires is significantly under-inflated. Acco rdingly,
when the low tire pressure telltale (tire pressure warning ligh t) illumi-
nates, you should stop and check your tires as soon as possible , and
inflate them to the proper pressure. Driving on a significantly under-
inflated tire causes the tire to overheat and can lead to tire failure.
Under-inflation also reduces fuel efficiency and tire tread lif e, and may
affect the vehicle’s handl ing and stopping ability.

4977-2. Steps to take in an emergency
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When trouble arises
Indicates a malfunction in the Drive-start control.A buzzer also sounds.
 Have the vehicle inspected by your Toyota
dealer immediately.
Indicates that the shift position was changed and
Drive-Start Control was operated while depress-
ing the accelerator pedal.
Momentarily release the accelerator pedal.
(Flashes)
Indicates that the headlight switch is left on (with
the key removed and the driver’s door opened)
A buzzer also sounds.
 Turn the lights off.
Indicates a malfunction in:
• The automatic headlight leveling system; or
• The LED headlight system (if equipped).
A buzzer also sounds.
 Have the vehicle inspected by your Toyota
dealer.
(If equipped)
Indicates a malfunction in the Automatic High
Beam system.
Have the vehicle inspected by your Toyota
dealer.
Indicates that the tire inflation pressure is low.
Check the tire inflation pressure, and
adjust to the appropriate level.
(If equipped)
Indicates that the Automatic High Beam switch is
pressed while the headlights are in low beam.
Turn the high beam on and press the Auto-
matic High Beam switch again.
Warning messageDetails/Actions
Drive-Start
Control
Malfunction
Visit Your Dealer
Release
Accelerator
Turn Lights Off
Headlight System Malfunction
Visit Your Dealer
Headlight System Malfunction
Visit Your Dealer
Tire Pressure Low Check Tire
Auto High Beam Ready Turn ON High Beam to
Activate

596Alphabetical index
Alphabetical index
A/C .................................... 340, 347Air conditioning filter ............. 446
Automatic air conditioning system ......... ....................... 347
Manual air conditioning system ......... ....................... 340
ABS (Anti-lock Brake
System) .................................. 320 Function ................................ 320
Warning light ......................... 484
Air conditioning filter .............. 446
Air conditioning system ............................ 340, 347
Air conditioning filter ............. 446
Automatic air conditioning system ......... ....................... 347
Manual air conditioning system ......... ....................... 340
Airbags ....................................... 40
Airbag operating conditions .... 49
Airbag precautions for your child ......................... 44
Airbag warning light .............. 483
Correct driving posture ........... 32
Curtain shield airbag operating conditions ............. 49
Curtain shield airbag precautions ........................... 45
Front passenger occupant classification syst em............. 53
General airbag precautions .... 44
Locations of airbags................ 40
Modification and disposal of airbags.............................. 47
Side airbag operating conditions ............................. 49
Side airbag precautions .......... 45
Side and curtain shield
airbags operating
conditions ............................. 49 Side and curtain shield
airbags precautions .............. 45
SRS airbags ........................... 40
Alarm Alarm ...................................... 95
Warning buzzer ............ 483, 491
Anchor brackets ........................ 63
Antennas
(smart key system) ............... 138
Anti-lock Brake System
(ABS) ...................................... 320 Function ................................ 320
Warning light......................... 484
Armrest..................................... 383
Assist grips .............................. 384
Audio input
*
Audio remote control switches*
AUX port*
AUTO LSD system................... 318
Automatic High Beam ............. 239
Automatic light control system.................................... 234
Automatic transmission Automatic transmission ........ 225
If the shift lever cannot be shifted from P ..................... 229
TOW/HAUL switch................ 228
AUX port
*
Auxiliary boxes ........................ 373
Back window
Back window......................... 175
Power back window .............. 176
Back-up lights Replacing light bulbs ............ 466
Wattage ................................ 548
Battery ...................................... 422 If the vehicle battery is discharged.......................... 523
Preparing and checking before winter ...................... 331
Warning light......................... 483
A
B

599Alphabetical index
If the warning message is displayed......................... 491
If you have a flat tire ............. 504
If you lose your keys ............. 123
If you think something
is wrong .............................. 481
If your vehicle becomes
stuck ................................... 530
If your vehicle has to be stopped in an emergency ... 473
If your vehicle needs to be towed ......................... 476
If your vehicle overheats ....... 527
Emergency flashers ................ 472
Engine “ACC” position ...................... 217
Compartment ........................ 415
Engine switch........................ 217
Hood ..................................... 414
How to start the engine ......... 217
Identification number ............ 539
If the engine will not start ...... 519
Ignition switch
(engine switch) ................... 217
Immobilizer system ................. 85
Overheating .......................... 527
Engine coolant ......................... 418 Capacity ................................ 543
Checking ............................... 418
Preparing and checking before winter....................... 331
Engine coolant temperature gauge...................................... 105
Engine immobilizer system ...... 85
Engine oil ................................. 416
Capacity ................................ 541
Checking ............................... 416
Preparing and checking before winter....................... 331
Engine oil maintenance
data ......................................... 407
Engine switch (ignition switch)..................... 217 Engine switch light
(ignition switch light) ............ 357
Event data recorder (EDR)........ 11
Flat tire ..................................... 504
Floor mats .................................. 30
Fluid
Automatic transmission ........ 544
Brake .................................... 545
Washer ................................. 425
Fog lights ................................. 244 Replacing light bulbs ............ 464
Switch ................................... 244
Wattage ................................ 548
Foot well light .......................... 357
Four-wheel drive system ........ 315
Front passenger occupant classification system .............. 53
Front personal lights............... 358
Front seats ............................... 147 Adjustment............................ 147
Cleaning ............................... 403
Correct driving posture ........... 32
Driving position memory ....... 152
Head restraints ..................... 157
Power easy access system .......... ...................... 152
Seat heaters ......................... 354
Seat position memory ........... 152
Seat ventilators ..................... 354
Front side marker lights Light switch ........................... 234
Replacing light bulbs ............ 462
Wattage ................................ 548
Front turn signal lights Replacing light bulbs ............ 461
Turn signal lever ................... 232
Wattage ................................ 548
F

600Alphabetical index
Fuel ........................................... 540Capacity ................................ 540
Fuel gauge ............................ 105
Fuel pump shut off system.... 482
Gas station information ......... 608
Information ............................ 549
Refueling............................... 248
Type .............................. 248, 540
Warning light ......................... 484
Warning message ................. 493
Fuel consumption Average fuel consumption ....................... 117
Current fuel consumption...... 117
Fuel filler door.......................... 250
Fuel pump shut off system ..... 482
Fuses ........................................ 452
Garage door opener ................ 385
Gas station information .......... 608
Gauges ..................................... 105
Glove box ................................. 362
Hands-free system (for cellular phone)
*
Head restraints ........................ 157
Headlights ................................ 234 Automatic High Beam ........... 239
Light switch ........................... 234
Replacing light bulbs............. 457
Wattage ................................ 548
Heaters
Automatic air conditioning system ......... ....................... 347
Manual air conditioning
system ......... ....................... 340
Outside rear view mirrors ........................ 342, 349
Seat heaters ......................... 354 High mounted stoplight
Replacing.............................. 468
Wattage ................................ 548
Hood ......................................... 414
Hooks Deck hooks ........................... 377
Retaining hooks (floor mat) .... 30
Horn .......................................... 162
I/M test ...................................... 411
Identification Engine .................................. 539
Tire ....................................... 553
Vehicle .................................. 539
Ignition switch
(engine switch) ...................... 217
Ignition switch light (engine switch light) ............. 357
Illuminated entry system ........ 359
Immobilizer system ................... 85
Indicators ................................. 102
Initialization Maintenance ......................... 407
Moon roof ............................. 181
Tire pressure warning system .... .............. 428
Inside rear view mirror ............ 164
Instrument panel light
control .................................... 107
Interior lights ........................... 357
Personal lights ...................... 358
Switches ............................... 357
Wattage ................................ 548
Intuitive parking assist ........... 298 Function ................................ 298
Warning message......... 492, 493
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