2023 TOYOTA TUNDRA HYBRID warning light

4756-3. Do-it-yourself maintenance
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6
Maintenance and care
■Operating conditions for
the function
 This function will perform the
change of wheel set only if a
second wheel set has been
registered. If no second wheel
set has been registered, no
change will be made when
selecting this function in the
menu.
 Only a change between both
registered wheel set is possi-
ble, mixing between these
wheel sets is not supported.
■How to change between
wheel sets
1 Have the vehicle fitted with
the preferred wheel set.
2 Press or of the meter
control switches on the steer-
ing wheel and select .
3 Press or of the meter
control switches and select
“Vehicle Settings”, and then
press and hold .
4 Press or of the meter
control switches and select
“TPWS”, and then press .
5 Press or of the meter
control switches and select
“Change Wheel”. Then press
and hold until the tire pressure warning light starts
slowly blinking 3 times.
Afterward, the tire pressure warning
light turns on afte
r flashing for 1
minute.
After 2 minutes, registration of a
second wheel set is being per-
formed. The tire pressure warning
light will turn off and “--” will be dis-
played for the infl ation pressure of
each tire on the m ulti-information
display.
6 Initialize the tire pressure
warning system. ( P.471)
If the tire inflation pressure settings
for the installed ti res change, initial-
ization operations are required, but
if the tire inflation pressure settings
are the same, init ialization is not
required.
7 Drive straight (with occa-
sional left and right turns) at
approximately 25 mph (40
km/h) or more for approxi-
mately 10 to 30 minutes.
Registration of a second wheel set
is complete when the tire pressure
warning light t urns off and the infla-
tion pressure of each tire is dis-
played on the multi-information
display.

4896-3. Do-it-yourself maintenance
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6
Maintenance and care
tecting the wiring harness from
damage.
■When replacing light bulbs
Toyota recommends that you use
genuine Toyota products designed
for this vehicle.
Because certain bulbs are con-
nected to circuits designed to pre-
vent overload, non-genuine parts or
parts not designed for this vehicle
may be unusable.
Check the wattage of the light
bulb to be replaced. ( P.548)
Front turn signal/parking
lights (bulb type)
WARNING
■To prevent system break-
downs and vehicle fire
Observe the following precau-
tions.
Failure to do so may cause dam-
age to the vehicle, and possibly a
fire or injury.
●Never use a fuse of a higher
amperage rating than that indi-
cated, or use any other object in
place of a fuse.
●Always use a genuine Toyota
fuse or equivalent.
Never replace a fuse with a
wire, even as a temporary fix.
●Do not modify the fuses or fuse
boxes.
NOTICE
■Before replacing fuses
Have the cause of electrical over-
load determined and repaired by
your Toyota dealer as soon as
possible.
Light bulbs
You may replace the follow-
ing bulb by yourself. If nec-
essary bulb replacement
seems difficult to perform,
contact your Toyota dealer.
For more information about
replacing other lights, con-
tact your Toyota dealer.
Preparing for light bulb
replacement
Bulb location

4916-3. Do-it-yourself maintenance
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6
Maintenance and care
2 Open the fender liner and
turn the bulb base counter-
clockwise.
3 Remove the light bulb.
4 Install a new light bulb and
turn the bulb base clockwise. 5
Reinstall the fender liner and
install the screws.
WARNING
■Replacing light bulbs
●Turn off the lights. Do not
attempt to replace the bulb
immediately 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 clean 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. Fail-
ure to do so may result in heat
damage, fire, or water entering
the light unit. This may damage
the lights or cause condensa-
tion to build up on the lens.

4926-3. Do-it-yourself maintenance
Owners Manual_USA_M0C052_en
WARNING
●Do not attempt to repair or dis-
assemble light bulbs, connec-
tors, electric circuits or
component parts.
Doing so may result in death or
serious injury due to electric
shock.
■To prevent damage or fire
Make sure bulbs are fully seated
and locked.

493
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7
When trouble arises
When trouble arises
7-1. Essential informationEmergency flashers .... 494
If your vehicle has to be stopped in an emergency.................................. 494
If the vehicle is submerged or water on the road is ris-
ing ............................. 495
7-2. Steps to take in an emer- gency
If your vehicle needs to be towed......................... 497
If you think something is wrong ........................ 499
If a warning light turns on or a warning buzzer sounds
.................................. 501
If a warning message is dis- played........................ 511
If you have a flat tire.... 515
If the hybrid system will not start ........................... 524
If you lose your keys ... 526
If the fuel door cannot be opened ...................... 526
If the electronic key does not operate properly .. 527
If the vehicle 12-volt battery is discharged ............. 529
If your vehicle overheats .................................. 535
If the vehicle becomes stuck .................................. 538

5017-2. Steps to take in an emergency
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7
When trouble arises
■Brake system warning light (warning buzzer)
■Brake system warning light (warning buzzer)
■High coolant temperature warning light*
*: This light illuminates on the mu lti-information display with a message.
If a war ning light tur ns on or a war ning buzzer
sounds
Calmly perform the following actions if any of the warning
lights comes on or flashes. If a light comes on or flashes, but
then goes off, this does not necessarily indicate a malfunc-
tion in the system. However, if this continues to occur, have
the vehicle inspected by your Toyota dealer.
Actions to the warning lights or warning buzzers
Warning lightDetails/Actions
(U.S.A.)
or
(Red)
(Canada)
Indicates that:
 The brake fluid level is low; or
 The brake system is malfunctioning
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer. C ontinuing to drive the vehi-
cle may be dangerous.
Warning lightDetails/Actions
(Yellow)
Indicates a malfunction in:
 The parking brake system;
 The regenerative braking system; or
 The electronically controlled brake system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Warning lightDetails/Actions
Indicates that the engine is overheating
 Immediately stop the v ehicle in a safe place.
Handling method ( P.535)

5027-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
■Charging system warning light* (warning buzzer)
*: This light illuminates on the mu lti-information display with a message.
■Low engine oil pressure warning light* (warning buzzer)
*: This light illuminates on the mu lti-information display with a message.
■Malfunction indicator lamp
■SRS warning light
Warning lightDetails/Actions
Indicates a malfunction in t he vehicle’s charging system
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Warning lightDetails/Actions
Indicates that the engine oil pressure is excessively low
 Immediately stop the vehicle in a safe place and con-
tact your Toyota dealer.
Warning lightDetails/Actions
(U.S.A.)
or
(Canada)
Indicates a malfunction in:
The hybrid system;
 The electronic engine control system; or
 The electronic throttle control system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Warning lightDetails/Actions
Indicates a malfunction in:
 The SRS airbag system;
 The front passenger occupant classification system; or
 The seat belt pretensioner system
 Have the vehicle inspecte d by your Toyota dealer
immediately.

5037-2. Steps to take in an emergency
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When trouble arises
■ABS warning light
■Electric power steering system warning light (warning
buzzer)
■PCS warning light
Warning lightDetails/Actions
(U.S.A.)
or
(Canada)
Indicates a malfunction in:
 The ABS; or
 The brake assist system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Warning lightDetails/Actions
(Red)
or
(Yellow)
Indicates a malfunct ion in the EPS (Electric Power Steer-
ing) system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Warning lightDetails/Actions
(Flashes or illu- minates)
When a buzzer sounds simultaneously:
Indicates a malfunct ion has occurred in the PCS (Pre-Colli-
sion System).
 Have the vehicle inspecte d by your Toyota dealer
immediately.
When a buzzer does not sound:
The PCS (Pre-Collision Syst em) has become temporarily
unavailable, corrective ac tion may be necessary.
 Follow the instructions dis played on the multi-infor-
mation display. ( P.228, 511)
If the PCS (Pre-Collision Syst em) or VSC (Vehicle Stability
Control) system is disabled, the PCS warning light will illu-
minate.
 P.376