2021 TOYOTA TUNDRA light

4686-3. Do-it-yourself maintenance
■Stop/tail and rear side marker lights, back-up lights and rear
turn signal lightsRemove the bolts and rear
combination assembly.
Turn the bulb bases counter-
clockwise.Rear turn signal light
Back-up light
Stop/tail and rear side
marker light
Remove the light bulb. Rear turn signal light
Back-up light
Stop/tail and rear side
marker light
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4696-3. Do-it-yourself maintenance
6
Maintenance and care
■License plate lightsTurn the bulb base counter-
clockwise.
Remove the light bulb.
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4706-3. Do-it-yourself maintenance
■High mounted stoplight and cargo lamps
Remove the screws and
cover.
Remove the light bulb. High mounted stoplight
Cargo lamps
When reinstalling the outer lens,
confirm that the packing is prop-
erly seated in the groove on the
housing.
■
Replacing the following bulbs
If any of the lights listed below has burnt out, have it replac ed by
your Toyota dealer.
● Daytime running lights/ parking lights (LED type)
● Side turn signal lights (if equipped)
● Outer foot lights (if equipped)
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Packing
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4716-3. Do-it-yourself maintenance
6
Maintenance and care
■When installing the rubber cover of the headlight
Ensure the rubber cover is securely attached.
■ When replacing the light bulbs
Confirm that they are properly engaged with the bulb base and that there is
no light leakage.
■ LED Lights
The headlights (LED type), front fog lights (LED type), parking lights (LED
type), daytime running light and side turn signal lights consis t of a number of
LEDs. If any of the LEDs burn out, take your vehicle to your To yota dealer to
have the light replaced.
■ Condensation build-up on the inside of the lens
Temporary condensation build-up on the inside of the headlight 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 headlight.Fit the rubber cover outer circumfer-
ence in firmly.
Fit the rubber cover around the light
bulb in until the light bulb plug can be
seen.
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4726-3. 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.

473
7When trouble arises
7-1. Essential informationEmergency flashers .......... 474
If your vehicle has to be stopped in
an emergency ................. 475
If the vehicle is trapped in rising water .................. 477 7-2. Steps to take in an emergency
If your vehicle needs to be towed ......................... 478
If you think something is wrong .............................. 483
Fuel pump shut off system ............................ 484
If a warning light turns on or a warning buzzer
sounds ............................ 485
If a warning message is displayed......................... 493
If you have a flat tire.......... 506
If the engine will not start ................................. 521
If the electronic key does not operate
properly (vehicles with
a smart key system) ........ 523
If the vehicle battery is discharged ...................... 525
If your vehicle overheats ... 529
If the vehicle becomes stuck ............................... 532

4747-1. Essential information
Emergency flashers
Press the switch.
All the turn signal lights will flash.
To turn them off, press the switch
once again.
■Emergency flashers
If the emergency flashers are used for a long time while the en gine is not
operating, the battery may discharge.
The emergency flashers are used to warn other drivers when the
vehicle has to be stopped in the road due to a breakdown, etc.

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When trouble arises
7-2. Steps to take in an emergency
If a warning light turns on or a war ning
buzzer sounds
Calmly perform the following actions if any of the warning ligh ts
comes on or flashes. If a light comes on or flashes, but then
goes off, this does not necessarily indicate a malfunction in the
system. However, if this continues to occur, have the vehicle
inspected by your Toyota dealer.
Warning light and w arning buzzer list
Warning lightWarning light/Details/Actions
(U.S.A.)
(Canada)
Brake system warning li ght (warning buzzer)
• Low brake fluid
• Malfunction in the brake system
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Charging system warning light
Indicates a malfunction in the vehicle’s charging system
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
(U.S.A.)
(Canada)
Malfunction indicator lamp Indicates a malfunction in:
• The electronic engine control system;
• The electronic throttle control system; or
• The electronic automatic transmission control system.
 Have the vehicle inspected by your Toyota dealer
immediately.
SRS warning light
Indicates a malfunction in:
• The SRS airbag system;
• The front passenger occupant classification system; or
• The seat belt pretensioner system
 Have the vehicle inspected by your Toyota dealer
immediately.