2023 TOYOTA TUNDRA HYBRID battery location

4636-3. Do-it-yourself maintenance
Owners Manual_USA_M0C052_en
6
Maintenance and care
The 12-volt battery is located in
the left-hand side of the rear
seat under.
1 Raising the bottom cushion.
( P.135)
2 Remove the battery cover.
Use the flat-head screwdriver or
mechanical key ( P.110).
■Before recharging
When recharging, the 12-volt bat-
tery produces hydrogen gas which
is flammable and explosive. There-
fore, observe the following precau-
tions before recharging:
●If recharging with the 12-volt bat-
NOTICE
■Do not use any fluid other
than washer fluid
Do not use soapy water or anti-
freeze instead of washer fluid.
Doing so may cause streaking on
the vehicle’s painted surfaces, as
well as damaging the pump lead-
ing to problems of the washer
fluid not spraying.
■Diluting washer fluid
Dilute washer fluid with water as
necessary.
Refer to the freezing tempera-
tures listed on the label of the
washer fluid bottle.
12-volt batter y
Location
Removing the 12-volt bat-
tery cover

5087-2. Steps to take in an emergency
Owners Manual_USA_M0C052_en
■Air suspension malfunction indicator
■Trailer brake warning light
■Warning buzzer
In some cases, the buzzer may not
be heard due to being in a noisy
location or audio sound.
■Front passenger detection sen-
sor, seat belt reminder and
warning buzzer
●If luggage is placed on the front
passenger seat, the front passen-
ger detection sensor may cause
the warning light to flash and the
warning buzzer to sound even if a
passenger is not sitting in the
seat.
●If a cushion is placed on the seat,
the sensor may n ot detect a pas-
senger, and the warning light may
not operate properly.
■SRS warning light
This warning light system monitors
the airbag sensor assembly, front
impact sensors, side impact sensors
(front door), side impact sensors
(front), side impact sensors (rear),
driver’s seat position sensor,
driver’s seat belt buckle switch, front
passenger occupant classification
sensors, “AIR BAG ON” indicator
light, “AIR BAG OFF” indicator light,
front passenger’s seat belt buckle
switch, seat belt pretensioners, air- bags, interconnecting wiring and
power sources. (
P. 3 7 )
■If the malfunction indicator
lamp comes on while driving
First check the following:
●Is the fuel tank empty?
If it is, fill the fuel tank immediately.
●Is the fuel ta nk cap loose?
If it is, tighten it securely.
The light will go off after several
driving trips.
If the light does not go off even after
several trips, con tact your Toyota
dealer as soon as possible.
■Electric power steering system
warning light (warning buzzer)
When the 12-volt battery charge
becomes insufficient or the voltage
temporarily drops, the electric power
steering system warning light may
come on and the warning buzzer
may sound.
■When the tire pressure warning
light comes on
Inspect the tires to check if a tire is
punctured.
If a tire is punctured: P. 5 1 5
If none of the tires are punctured:
Warning lightDetails/Actions
(If equipped)
Indicates a malfunction in the air suspension system
 Have the vehicle inspecte d by your Toyota dealer
immediately.
Warning lightDetails/Actions
Indicates a malfunction in:
 Trailer brake control system; or
 Trailer connector circuit
 Have the vehicle inspecte d by your Toyota dealer
immediately.

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

606Alphabetical Index
Owners Manual_USA_M0C052_en
Using the system.................. 299
Toyota Safety Sense 2.5 ........ 225 AHB (Automatic High Beam) 214
Dynamic radar cruise control with full-speed range .......... 256
LTA (Lane Tracing Assist) ..... 242
PCS (Pre-Collision System) . 230
RSA (Road Sign Assist) ....... 253
TRAC (Traction Control) ........ 375
Traction battery (hybrid battery) ................................................. 76Hybrid battery (traction battery) air intake vents ..................... 79
Location.................................. 76
Specification ......................... 543
Warning message .................. 79
Traction Control (TRAC) ........ 375
Traction motor (electric motor)73 Specification ......................... 543
Trailer Backup Guide ............. 383 Canceling the system ........... 386
Precautions .......................... 387
Procedure............................. 383
Setup (Calibration) ............... 384
Trailer hitch light ................... 386
Using Guidance mode.......... 385
Using Straight Path Assist .... 385
Trailer brake ............................ 380
Trailer brake controller .......... 380 Trailer settings ...................... 100
Trailer hitch light ............ 386, 410 Replacing light bulbs ............ 490
Trailer settings ........................ 100
Trailer Sway Control .............. 375
Trailer towing .......................... 181 Trailer Backup Guide............ 383
Trailer settings ...................... 100
Trailering light Replacing light bulbs ............ 490
Transfer ................................... 545
Transmission Automatic transmission ........ 200 Trip meters ................................93
Turn signal lights ....................204
Replacing light bulbs ............490
Turn signal lever ...................204
U
USB charging ports ................420
V
Vanity lights ............................431
Vanity mirrors .........................431
Vehicle capacity weight .........541
Vehicle data recording ...............7
Vehicle identification number541
Vehicle information display .....98
Ventilators (seat ventilators) .407
Voltmeter ...................................91