2023 TOYOTA TUNDRA HYBRID headlights

2454-5. Using the driving support systems
Owners Manual_USA_M0C052_en
4
Driving
WARNING
●The vehicle is driven in an area
without white (yellow) lines,
such as in front of a tollgate or
checkpoint, or at an intersec-
tion, etc.
●The white (yellow) lines are
cracked, “Botts’ dots”, “Raised
pavement marker” or stones are
present.
●The white (yello w) lines cannot
be seen or are difficult to see
due to sand, etc.
●The vehicle is driven on a road
surface that is wet due to rain,
puddles, etc.
●The traffic li nes are yellow
(which may be more difficult to
recognize than lines that are
white).
●The white (yellow) lines cross
over a curb, etc.
●The vehicle is driven on a bright
surface, such as concrete.
●The vehicle is driven on a sur-
face that is bright due to
reflected light, etc.
●The vehicle is driven in an area
where the brightness changes
suddenly, such as at the
entrances and exits of tunnels,
etc.
●Light from the h eadlights of an
oncoming vehicle, the sun, etc.,
enters the camera.
●The vehicle is driven on a slope.
●The vehicle is driven on a road
which tilts left or right, or a wind-
ing road.
●The vehicle is driven on an
unpaved or rough road.
●The traffic lane is excessively
narrow or wide.
●The vehicle is extremely tilted
due to carrying heavy luggage
or having improper tire pres-
sure.
●The distance to the preceding
vehicle is extremely short.
●The vehicle is moving up and
down a large amount due to
road conditions during driving
(poor roads or road seams).
●When driving in a tunnel or at
night with the headlights off or
when a headlight is dim due to
its lens being dir ty or it being
misaligned.
●The vehicle is struck by a cross-
wind.
●The vehicle is affected by wind
from a vehicle driven in a
nearby lane.
●The vehicle has just changed
lanes or crossed an intersec-
tion.
●Tires which differ by structure,
manufacturer, brand or tread
pattern are used.
●When tires of a size other than
specified are installed.
●Snow tires, etc., are equipped.
●The vehicle is b eing driven at
extremely high speeds.
●When your vehicles is towing a
trailer or another vehicle, except
when the followin g condition is
met.
• When the other vehicle is a trailer properly attached and
connected to Toyota’s official
TBC ECU. ( P.181)

3074-5. Using the driving support systems
Owners Manual_USA_M0C052_en
4
Driving
SymptomLikely causeSolution
The image is difficult to
see
 The vehicle is in a dark
area
 The temperature
around the lens is
either high or low
 The outside tempera-
ture is low
 There are water drop-
lets on the camera
 It is raining or humid
 Foreign matter (mud,
etc.) is adhering to the
camera
 Sunlight or headlights
are shining directly
into the camera
 The vehicle is under
fluorescent lights,
sodium lights, mer-
cury lights, etc.
Back up while visually
checking the vehicle’s
surroundings. (Use the
monitor again once con-
ditions have been
improved.)
The procedure for
adjusting the picture
quality of the parking
assist monitor is the
same as the procedure
for adjusting the screen
display. (Refer to the
“MULTIMEDIA
OWNER’S MANUAL”.)
The image is blurry
Dirt or foreign matter
(such as water droplets,
snow, mud, etc.) is
adhering to the camera.Flush the camera with a
large quantity of water
and wipe the camera
lens clean with a soft
and wet cloth.
The image is out of
alignment
The camera or sur-
rounding area has
received a strong
impact.Have the vehicle
inspected by your Toy-
ota dealer.
The guide lines are
very far out of align-
ment
The camera position is
out of alignment.Have the vehicle
inspected by your Toy-
ota dealer.
The vehicle is tilted
(there is a heavy load
on the vehicle, tire
pressure is low due to
a tire puncture, etc.)
 The vehicle is used on
an incline.If this happens due to
these causes, it does
not indicate a malfunc-
tion.
Back up while visually
checking the vehicle’s
surroundings.

3414-5. Using the driving support systems
Owners Manual_USA_M0C052_en
4
Driving
SymptomLikely causeSolution
The image is difficult to
see
 The vehicle is in a
dark area
 The temperature
around the lens is
either high or low
 The outside tempera-
ture is low
 There are water drop-
lets on the camera
 It is raining or humid
 Foreign matter (mud,
etc.) is adhering to the
camera
 Sunlight or headlights
are shining directly
into the camera
 The vehicle is under
fluorescent lights,
sodium lights, mer-
cury lights, etc.
Back up while visually
checking the vehicle’s
surroundings. (Use the
monitor again once con-
ditions have been
improved.)
The procedure for
adjusting the picture
quality of the pan-
oramic view monitor
system is the same as
the procedure for
adjusting the screen dis-
play. (Refer to the
“MULTIMEDIA
OWNER’S MANUAL”.)
The image is blurry
Dirt or fore ign matter
(such as water drop-
lets, snow, mud, etc.) is
adhering to the camera.Flush the camera with a
large quantity of water
and wipe the camera
lens clean with a soft
and wet cloth.
The image is out of
alignment
The camera or sur-
rounding area has
received a strong
impact.Have the vehicle
inspected by your Toy-
ota dealer.
The guide lines are very
far out of alignment
The camera position is
out of alignment.Have the vehicle
inspected by your Toy-
ota dealer.
 The vehicle is tilted.
(There is a heavy load
on the vehicle, tire
pressure is low due to
a tire puncture, etc.)
 The vehicle is used on
an incline.If this happens due to
these causes, it does
not indicate a malfunc-
tion.
Back up while visually
checking the vehicle’s
surroundings.

4906-3. Do-it-yourself maintenance
Owners Manual_USA_M0C052_en
■Lights that need to be
replaced by your Toyota
dealer
 Headlights
 Daytime running lights
 Front turn signal/parking lights
(LED type)
 Front fog lights
 Side marker lights
 Side turn signal lights
 Trailering light (if equipped)
 Tail lights
 Stop lights
 Back-up light
 Rear turn signal lights
 High mounted stoplight/cargo
lamp
 Trailer hitch light (if equipped)
 Bed lamp (if equipped)
 Auxiliary lights (if equipped)
 Light bar (if equipped)
 Arch molding marker lights (if
equipped)
■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 lights other th an front turn sig-
nal/parking lights (bulb type) consist
of a number of LEDs. If any of the
LEDs burn out, take your vehicle to
your Toyota dealer to have the light
replaced.
■Condensation build-up on the
inside of the lens
Temporary condensation build-up
on the inside of t he headlight lens
does not indicate a malfunction.
Contact your Toyota dealer for more
information in t he following situa-
tions:
●Large drops of water have built up
on the inside of the lens.
●Water has built up inside the
headlight.
■When replacing light bulbs
 P.489
■Front turn signal/parking
lights (bulb type)
1 To allow enough working
space, turn the steering
wheel to the opposite side of
the bulb to be replaced.
Remove the screws, and
remove the fender liner.
Turn the steering wheel to the left
when replacing the right side light
bulb, and turn the steering wheel to
the right when replacing the left
side light bulb.
Replacing light bulb

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

598Alphabetical Index
Owners Manual_USA_M0C052_en
Fuel gauge ............................. 91
Information ........................... 549
Opening the fuel tank cap .... 222
Type ..................................... 542
Warning light ........................ 507
Fuel consumption Average fuel economy ........... 97
Current fuel consumption ....... 97
Fuel door When the fuel door cannot be opened ............................... 526
Fuel economy ......... .................. 97
Fuel gauge ................................ 91
Fuses ....................................... 486
G
Garage door opener ............... 433
Gauges ...................................... 91
Glove box ................................ 413
Glove box light ....................... 410
H
Head restraints ....................... 140
Head-up display ..................... 102 Driving support system display area .................................... 104
HUD (Head-up display) switch ........................................... 103
Hybrid System Indicator ....... 105
Navigation system-linked dis- play area ............................ 104
Outside temperature ............ 102
Pop-up display ..................... 104
Settings ................................ 103
Headlights Automatic High Beam system........................................... 214
Light switch .......................... 211
Replacing light bulbs ............ 490
Heated steering wheel ........... 407
Heaters Automatic air conditioning sys-
tem .....................................400
Heated steering wheel..........407
Outside rear view mirrors .....401
Seat heaters ....... ..................407
High mounted stoplight Replacing light bulbs ............490
High-voltage components .......76
Hill-start assist control...........375
Hood ........................................456 Open.....................................456
Hooks Coat hooks ...........................426
Retaining hooks (floor mat) ....26
Horn .........................................144
HUD (Head-up display) switch ...............................................103
Hybrid battery (traction battery) Location ..................................76
Warning message...................79
Hybrid battery (traction battery) air intake vents .......................79Cleaning ...............................481
Hybrid Electric Vehicle driving tips .........................................390
Hybrid Power Meter ..................94
Hybrid system .... .......................73
Acoustic vehicle alerting system .............................................75
Emergency shut off system ....79
High voltage components .......76
Hybrid system precautions .....76
If the hybrid sys tem will not start
...........................................524
Power (ignition) switch .........195
Regenerative braking .............74
Starting the hybrid system ....195
Warning lights .......................502
Hybrid System Indicator ..97, 105