2023 TOYOTA TUNDRA HYBRID lights

5077-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
7
When trouble arises
■Low fuel level warning light
■Driver’s and front passenger’s seat belt reminder light (warn-
ing buzzer)*
*: Driver’s seat bel t warning buzzer:
The driver’s seat belt warning buzzer sounds to alert the drive r that his or
her seat belt is not fastened. Onc e the power switch is turned to ON, the
buzzer sounds. If the seat belt is still unfastened, the buzzer sounds inter-
mittently for a certain period o f time after the vehicle reaches a certain
speed.
Front passenger’s seat belt warning buzzer:
The front passenger’s seat belt warning buzzer sounds to alert the front
passenger that his or her seat belt is not fastened. If the sea t belt is
unfastened, the buzzer sounds int ermittently for a certain period of time
after the vehicle reaches a certain speed.
■Rear passengers’ seat belt reminder lights (warning buzzer)*
*: Rear passengers’ seat belt warning buzzer:
The rear passengers’ seat belt war ning buzzer sounds to alert the rear
passenger that his or her seat belt is not fastened. If the sea t belt is
unfastened, the buzzer sounds int ermittently for a certain period of time,
after the seat belt is fastened and unfastened and the vehicle reaches a
certain speed.
Warning lightDetails/Actions
Indicates that remaining fuel is approximately 3.4 gal. (13.0
L, 2.8 Imp. gal.) or less
 Refuel the vehicle.
Warning lightDetails/Actions
Warns the driver and/or front passenger to fasten their seat
belts
Fasten the seat belt.
If the front passenger’s seat is occupied, the front
passenger’s seat belt also needs to be fastened to
make the warning light (warning buzzer) turn off.
Warning lightDetails/Actions
Warns the rear passengers to fasten their seat belts
 Fasten the seat belt.

5097-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
7
When trouble arises
Turn the power switch off then turn it
to ON. Check if the tire pressure
warning light comes on or blinks.
If the tire pressure warning light
blinks for approximately 1 minute
then stays on
There may be a malfunction in the
tire pressure warning system. Have
the vehicle inspected by your Toyota
dealer immediately.
If the tire pressure warning light
comes on
1 After the temperature of the tires
has lowered sufficiently, check
the inflation pressure of each tire
and adjust them to the specified
level.
2 If the warning light does not turn
off even after several minutes
have elapsed, check that the
inflation pressure of each tire is
at the specified level and perform
initialization. ( P.471)
■The tire pressure warning light
may come on due to natural
causes
The tire pressure warning light may
come on due to natural causes such
as natural air leaks and tire inflation
pressure changes caused by tem-
perature. In this case, adjusting the
tire inflation pressure will turn off the
warning light (after a few minutes).
■When a tire is replaced with a
spare tire
The temporary spare tire is not
equipped with the tire pressure
warning valve and transmitter. If a
tire goes flat, the tire pressure warn-
ing light will not turn off even though
the flat tire is replaced with the tem-
porary spare tire.
Replace the temporary spare tire
with the repaired tire and adjust the
proper tire inflation pressure. The
tire pressure warning light will turn
off after several minutes.
■Conditions that the tire pres-
sure warning system may not
function properly
 P.469
WARNING
■If both the ABS and the brake
system warning lights remain
on
Stop your vehicle in a safe place
immediately and contact your Toy-
ota dealer.
The vehicle will become
extremely unstable during brak-
ing, and the ABS system may fail,
which could cause an accident
resulting in death o r serious injury.
■When the electric power
steering system warning light
comes on
When the light comes on yellow,
the assist to the power steering is
restricted. When the light comes
on red, the assis t to the power
steering is lost and handling oper-
ations of the steering wheel
become extremely heavy.
When steering wheel operations
are heavier than usual, grip the
steering wheel firmly and operate
it using more fo rce than usual.
■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 inflation pressure
immediately.

5257-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
7
When trouble arises
approximately -31°F [-35°C]).
( P.195)
One of the following may be the
cause of the problem:
 The 12-volt battery may be
discharged. ( P.529)
 The 12-volt battery terminal
connections may be loose or
corroded. ( P.463)
One of the following may be the
cause of the problem:
 The 12-volt battery may be
discharged. ( P.529)
 One or both of the 12-volt bat-
tery terminals may be discon-
nected. ( P.463)
Contact your Toyot a dealer if the
problem cannot be repaired, or if
repair procedures are unknown.
When the hybrid system does
not start, the following steps can
be used as an interim measure
to start the hybrid system if the
power switch is functioning nor- mally.
Do not use this starting proce-
dure except in case of emer-
gency.
1
Pull the parking brake switch
to check that the parking
brake is set. ( P.205)
Parking brake indicator will come
on.
2 Shift the shift lever to P.
3 Turn the power switch to
ACC.
4 Press and hold the power
switch for about 15 seconds
while depressing the brake
pedal firmly.
Even if the hybrid system can be
started using the above steps, the
system may be malfunctioning.
Have the vehicle inspected by your
Toyota dealer.
The interior lights and
headlights are dim, or the
horn does not sound or
sounds at a low volume.
The interior lights and
headlights do not turn on,
or the horn does not
sound.
Emergency start function

5317-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
7
When trouble arises
Exclusive jump starting terminal (your vehicle)
Positive (+) battery terminal (second vehicle)
Negative (-) battery term inal (second vehicle)
Solid, stationary, unpainted metallic point away from the batte ry
and any moving parts as shown in the illustration
6 Start the engine of the sec-
ond vehicle. Increase the
engine speed slightly and
maintain at that level for
approximately 5 minutes to
recharge the 12-volt battery
of your vehicle.
7 Open and close any of the
doors of your vehicle with the
power switch OFF.
8 Maintain the engine speed of
the second vehicle and start
the hybrid system of your
vehicle by turning the power
switch to ON.
9 Once the vehicle’s hybrid
system has started, remove
the jumper cables in the
exact reverse order from
which they were connected.
10 When the engine cover
installing, reverse the step
removed.
11 Close the exclusive jump
starting terminal cover, and
reinstall the fuse box cover to
its original position.
Once the engine starts, have the
vehicle inspected at your Toyota
dealer as soon as possible.
■Starting the hybrid system
when the battery is discharged
The hybrid system cannot be started
by push-starting.
■To prevent 12-volt battery dis-
charge
●Turn off the headlights and the
audio system while the hybrid sys-
tem is off.
●Turn off any unnecessary electri-
cal components when the vehicle
is running at a low speed for an
extended period, such as in heavy
traffic.
■When the 12-volt battery is
removed or discharged
●Information stored in the ECU is
cleared. When the 12-volt battery
is depleted, have the vehicle
inspected at your Toyota dealer.
●Some systems may require initial-
ization. ( P.571)
■When removing the 12-volt bat-
tery terminals
When the 12-volt battery terminals
are removed, the information stored
in the ECU is cleared. Before
removing the 12-vo lt battery termi-
nals, contact you r Toyota dealer.
■Charging the 12-volt battery
The electricity stored in the 12-volt
battery will discha rge gradually even
when the vehicle i s not in use, due
to natural dischar ge and the drain-
ing effects of certain electrical appli-
ances. If the vehicle is left for a long
time, the 12-volt battery may dis-
charge, and the hybrid system may
be unable to start. (The 12-volt bat-

5458-1. Specifications
Owners Manual_USA_M0C052_en
8
Vehicle specifications
*: The fluid capacity is a reference quantity. If replacement is necessary, contact your Toyota dealer.
Your Toyota vehicle is filled with “Toyota Genuine ATF WS” at the
factory.
Use Toyota approved “Toyota Genuine ATF WS” or an equivalent of
matching quality to satisfy the above specification. Please contact
your Toyota dealer for further details.
NOTICE
■Iridium-tipped spark plugs
Use only iridium-tipped spark plugs. Do not adjust the spark pl ug gap.
Electrical system
Open voltage at 68°F (20°C):
12.0 V or higher
(Turn the power switch off and turn on the
high beam headlights for 30 seconds.)
Charging rates5 A max.
Automatic transmission
Fluid capacity*12.4 qt. (11.7 L, 10.3 Imp.qt.)
Fluid typeToyota Genuine ATF WS
NOTICE
■Automatic transm ission fluid type
Using transmission fluid other than the above type may cause ab normal
noise or vibration, or damage th e transmission of your vehicle.
Transfer (4WD models)
Oil capacity2.17 qt. (2.05 L, 1.80 Imp.qt.)
Oil type and viscosityToyota Genuine ATF WS

5488-1. Specifications
Owners Manual_USA_M0C052_en
20-inch tires (type B)
22-inch tires
A: Wedge base bulbs (amber)
Tire size265/60R20 112H, 265/70R18 116T (spare)
Tire inflation pressure
(Recommended cold tire
inflation pressure)
35 psi (240 kPa, 2.4 kgf/cm2 or bar)
Wheel size20  8 1/2 J, 18  7J (spare)
Wheel nut torque
Steel wheels:
154 ft·lbf (209 N·m, 21.3 kgf·m)
Aluminum wheels:
97 ft·lbf (131 N·m, 13.4 kgf·m)
Tire size265/50R22 112H, 245/75R18 112T (spare)
Tire inflation pressure
(Recommended cold tire
inflation pressure)38 psi (260 kPa, 2.6 kgf/cm2 or bar)
36 psi (250 kPa, 2.5 kgf/cm
2 or bar) (spare)
Wheel size22  8J, 18  7J (spare)
Wheel nut torque
Steel wheels:
154 ft·lbf (209 N·m, 21.3 kgf·m)
Aluminum wheels:
97 ft·lbf (131 N·m, 13.4 kgf·m)
Light bulbs
Light bulbsBulb No.WTy pe
ExteriorFront turn signal/parking
lights7444NA28/8A

5678-2. Customization
Owners Manual_USA_M0C052_en
8
Vehicle specifications
■Lights ( P.211)
*: Except for Canada
■PCS (Pre-Collision System) ( P.230)
*: The system is automatically enabled each time the power switch is turned
to ON.
■LTA (Lane Tracing Assist) ( P.242)
Time elapsed before head-
lights automatically turn off
after doors are closed
30 seconds
Off
O—O60 seconds
90 seconds
Windshield wiper linked
headlight illuminationOnOff——O
FunctionDefault settingCustomized
setting
Daytime running lights*OnOffO—O
Welcome lamp (if equipped)OnOff——O
FunctionCustomized setting
PCS (Pre-Collision System)*On/Off—O—
Adjust alert timingEarly/Middle/Late—O—
FunctionCustomized setting
Lane centering functionOn/Off—O—
Alert typeSteering wheel vibra- tion/Buzzer—O—
Alert sensitivityHigh/Standard—O—
Vehicle sway warning func-
tionOn/Off—O—
Vehicle sway warning sensi-
tivityHigh/Standard/Low—O—
FunctionDefault settingCustomized setting

5698-2. Customization
Owners Manual_USA_M0C052_en
8
Vehicle specifications
■RCTA (Rear Cross Traffic Alert) ( P.281)
■Automatic air conditioning system ( P.400)
■Illumination ( P.410)
*: If equipped
FunctionDefault settingCustomized
setting
RCTA (Rear Cross Traffic
Alert)OnOff—O—
Buzzer volumeLevel 2Level 1—O—Level 3
FunctionDefault settingCustomized setting
A/C mode with autoOnOffO—O
FunctionDefault settingCustomized setting
Time elapsed before the inte-
rior lights and cargo lamp
turn off
15 seconds
Off
O—O7.5 seconds
30 seconds
Operation of the per-
sonal/interior lights after the
power switch is turned off
OnOff——O
Operation of the per-
sonal/interior lights when the
doors are unlocked
OnOff——O
Operation of the per-
sonal/interior lights when you
approach the vehicle with the
electronic key on your per-
son
OnOff——O
Ambient lights*OnOff——O