2023 TOYOTA TUNDRA fuses

5
1
8 7 5 4
3
2
9
6
6-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 402
Cleaning and protecting the vehicle interior ........... 406
6-2. Maintenance Maintenance requirements ................... 409
General maintenance ........ 411
Emission inspection and maintenance (I/M)
programs ......................... 414
6-3. Do-it-yourself maintenance Do-it-yourself service precautions ..................... 415
Hood.................................. 417
Engine compartment ......... 419
Tires .................................. 431
Tire inflation pressure........ 442
Wheels .............................. 445
Air conditioning filter .......... 448
Wireless remote control/ electronic key battery ...... 451
Checking and replacing fuses ............................... 455
Light bulbs ......................... 458 7-1. Essential information
Emergency flashers ........... 472
If your vehicle has to be stopped in
an emergency.................. 473
If the vehicle is submerged or water on
the road is rising .............. 475
7-2. Steps to take in an emergency
If your vehicle needs to be towed .......................... 476
If you think something is wrong ......... 480
Fuel pump shut off system ............................. 481
If a warning light turns on or a warning buzzer
sounds ............................. 482
If a warning message is displayed ......................... 489
If you have a flat tire .......... 511
If the engine will not start ................................. 526
If the electronic key does not operate properly
(vehicles with a smart
key system) .................... 528
If the vehicle battery is discharged ....................... 530
If your vehicle overheats.... 534
If the vehicle becomes stuck ................................ 536
6Maintenance and care7When trouble arises

401
6Maintenance and care
6-1. Maintenance and careCleaning and protecting the vehicle exterior .......... 402
Cleaning and protecting the vehicle interior ........... 406
6-2. Maintenance Maintenance requirements ................... 409
General maintenance ........ 411
Emission inspection and maintenance (I/M)
programs ......................... 414 6-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 415
Hood ................................. 417
Engine compartment ......... 419
Tires .................................. 431
Tire inflation pressure ....... 442
Wheels .............................. 445
Air conditioning filter.......... 448
Wireless remote control/ electronic key battery ...... 451
Checking and replacing fuses ............................... 455
Light bulbs......................... 458

4156-3. Do-it-yourself maintenance
6
Maintenance and care
Do-it-yourself ser vice precautions
If you perform maintenance by yourself, be sure to follow the
correct procedure as given in these sections.
ItemsParts and tools
Battery condition
(  P. 428)• Warm water• Baking soda• Grease
• Conventional wrench (for terminal clamp bolts)
Brake fluid level
( P. 425)• FMVSS No.116 DOT 3 or SAE J1703 brake fluid
• Rag or paper towel
• Funnel (used only for adding brake fluid)
Engine coolant
level ( P. 423)
• “Toyota Super Long Life Coolant” or a similar high
quality ethylene glycol-based non-silicate, non-
amine, non-nitrite and non-borate coolant with long-
life hybrid organic acid technology
For the U.S.A.:
“Toyota Super Long Life Coolant” is pre-mixed with
50% coolant and 50% deionized water.
For Canada:
“Toyota Super Long Life Coolant” is pre-mixed with
55% coolant and 45% deionized water.
• Funnel (used only for adding coolant)
Engine oil level
(  P. 421)• “Toyota Genuine Motor Oil” or equivalent
• Rag or paper towel
• Funnel (used only for adding engine oil)
Fuses
( P. 455)• Fuse with same amperage rating as original
Light bulbs
( P. 458)
• Bulb with same number and wattage rating as origi-
nal
• Phillips-head screwdriver
• Flathead screwdriver• Wrench
Power steering
fluid level

(
P. 426)
• Automatic transmission fluid DEXRON® II or III
• Rag or paper towel
• Funnel (used only for adding power steering fluid)
Radiator and
condenser
(
P. 425)

Tire inflation
pressure
(  P. 442)• Tire pressure gauge
• Compressed air source
Washer fluid
( P. 430)• Water or washer fluid containing antifreeze (for win-
ter use)
• Funnel (used only for adding water or washer fluid)

4556-3. Do-it-yourself maintenance
6
Maintenance and care
Checking and replacing fuses
Vehicles without a smart key system:
Turn the engine switch to the “LOCK” position.
Vehicles with a smart key system:
Turn the engine switch off.
Open the fuse box cover.
Engine compartment
Push the tabs in and lift the
cover off.
Under the instrument panel
Remove the cover.
If any of the electrical components do not operate, a fuse may
have blown. If this happens, check and replace the fuses as nec-
essary.
1
2

4576-3. Do-it-yourself maintenance
6
Maintenance and care
■After a fuse is replaced
●If the lights do not turn on even after the fuse has been repla ced, a bulb may
need replacement. ( P. 458)
● If the replaced fuse blows again, have the vehicle inspected by your Toyota
dealer.
■ If there is an overload in a circuit
The fuses are designed to blow, protecting the wiring harness from damage.
WARNING
■ To prevent system breakdowns and vehicle fire
Observe the following precautions.
Failure to do so may cause damage to the vehicle, and possibly a fire or
injury.
● Never use a fuse of a higher amperage rating than that indicate d, 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 overload determined and repaired b y your
Toyota dealer as soon as possible.

605Alphabetical index
Fuel ........................................... 544Capacity ................................ 544
Fuel gauge .............................. 98
Fuel pump shut off system.... 481
Information ............................ 554
Refueling............................... 233
Type ...................................... 544
Warning light ......................... 483
Warning message ................. 493
Fuel consumption
Average fuel consumption ............... 103, 109
Current fuel
consumption ............... 103, 109
Fuel filler door.......................... 235
Fuel pump shut off system ..... 481
Fuses ........................................ 455
Garage door opener ................ 389
Gas station information .......... 616
Gauges ....................................... 98
Glove box ................................. 357
Grocery bag hooks .................. 372
Hands-free system (for cellular phone)
*
Head restraints ........................ 145
Headlights ................................ 220 Automatic High Beam ........... 224
Light switch ........................... 220
Replacing light bulbs..... 460, 461
Wattage ................................ 553 Heaters
Automatic air conditioning system .......... ...................... 344
Manual air conditioning system .......... ...................... 338
Seat heaters ......................... 351
Outside rear view mirrors ........................ 340, 347
High mounted stoplight Replacing.............................. 468
Wattage ................................ 553
Hill-start assist control ........... 324
Hood ......................................... 417
Hooks Deck hooks ........................... 367
Grocery bag hooks ............... 372
Retaining hooks (floor mat) .... 26
Horn .......................................... 149
G
H
*: For vehicles with Audio Plus or Premium Audio, refer to the “ NAVIGA-
TION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”

609Alphabetical index
Radar cruise control (dynamic radar cruise control) ............. 266
Radiator .................................... 425
Radio
*
Rear differential lock system............................ 309
Rear seat
Adjustment precautions ........ 144
Child seats/child restraint system installation . ............... 58
Cleaning................................ 406
Folding down ........................ 142
Head restraints ..................... 145
Raising the bottom cushion ............................... 142
Rear side marker lights ........... 220
Light switch ........................... 220
Replacing light bulbs............. 466
Wattage ................................ 553
Rear step bumper .................... 130
Rear turn signal lights............. 218 Replacing light bulbs............. 466
Turn signal lever ................... 218
Wattage ................................ 553
Rear view mirror
Inside rear view mirror .......... 151
Outside rear view mirrors...... 154
Rear view monitor system
*
Refueling .................................. 233
Capacity................................ 544
Fuel types ............................. 544
Opening the fuel tank cap..... 235
Replacing Electronic key battery ........... 451
Fuses .................................... 455
Light bulbs ............................ 458
Tires...................................... 511
Wireless remote control battery ................................ 451
Reporting safety defects for Canadian owners ............ 579
Reporting safety defects for U.S. owners...................... 578
Resetting the remainder light
or message indicating
maintenance is required....... 410
Safety Connect .......................... 72
Seat belt reminder light .......... 483
Seat belts ................................... 30 Adjusting the seat belt ............ 31
Automatic Locking Retractor (ALR) .................................... 32
Child restra int system
installation ............................ 58
Cleaning and maintaining the seat belt........................ 407
Emergency Locking Retractor
(ELR) .................................... 32
How to wear your seat belt ..... 30
How your child should wear the seat belt ................. 32
Pregnant women, proper seat belt use ............. 33
Reminder light and buzzer.... 483
Seat belt extender .................. 32
Seat belt pretensioners........... 31
SRS warning light ................. 482R
S
*: For vehicles with Audio Plus or Premium Audio, refer to the “ NAVIGA-
TION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”