2021 TOYOTA TUNDRA fuse box

4156-3. Do-it-yourself maintenance
6
Maintenance and care
Engine compartment
Washer fluid tank (P. 425)
Engine oil level dipstick ( P. 416)
Engine coolant reservoir ( P. 418)
Engine oil filler cap ( P. 417)
Brake fluid reservoir ( P. 420) Fuse box (
P. 454)
Battery ( P. 422)
Radiator ( P. 420)
Cooling fan
Condenser ( P. 420)
Power steering fluid reservoir ( P. 421)1
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3
4
5
6
7
8
9
10
11

4546-3. Do-it-yourself maintenance
Checking and replacing fuses
Turn the engine switch off.
Open the fuse box cover.
Engine compartment
Push the tab in and lift the
cover off.
Under the instrument panel
Remove the cover.
Remove the fuse with the pull-
out tool.
Only type A fuse can be removed
using the pullout tool.
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.
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2
3

4556-3. Do-it-yourself maintenance
6
Maintenance and care
Check if the fuse is blown.Normal fuse
Blown fuse
Type A and B:
Replace the blown fuse with a new fuse of an appropriate ampera ge rat-
ing. The amperage rating can be found on the fuse box cover.
Type C:
Contact your Toyota dealer.
■ 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. 457)
● 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 f rom damage.
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2
Ty p e AType B
Ty p e C

4566-3. Do-it-yourself maintenance
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.

603Alphabetical index
Warning light ......................... 486
Warning message ................. 495
Fuel consumption
Average fuel consumption ....................... 117
Current fuel consumption...... 117
Fuel filler door.......................... 250
Fuel pump shut off system ..... 484
Fuses ........................................ 454
Garage door opener ................ 385
Gas station information .......... 612
Gauges ..................................... 105
Glove box ................................. 362
Hands-free system (for cellular phone)
*
Head restraints ........................ 157
Headlights ................................ 234 Automatic High Beam ........... 239
Light switch ........................... 234
Replacing light bulbs............. 459
Wattage ................................ 550
Heaters Automatic air conditioning system ......... ....................... 347
Manual air conditioning system ......... ....................... 340
Outside rear view
mirrors ........................ 342, 349
Seat heaters ......................... 354 High mounted stoplight
Replacing.............................. 470
Wattage ................................ 550
Hood ......................................... 414
Hooks Deck hooks ........................... 377
Retaining hooks (floor mat) .... 30
Horn .......................................... 162
I/M test ...................................... 411
Identification Engine .................................. 541
Tire ....................................... 555
Vehicle .................................. 541
Ignition switch
(engine switch) ...................... 217
Ignition switch light (engine switch light) ............. 357
Illuminated entry system ........ 359
Immobilizer system ................... 85
Indicators ................................. 102
Initialization Maintenance ......................... 407
Moon roof ............................. 181
Tire pressure warning system .... .............. 428
Inside rear view mirror ............ 164
Instrument panel light
control .................................... 107
Interior lights ........................... 357
Personal lights ...................... 358
Switches ............................... 357
Wattage ................................ 550
Intuitive parking assist ........... 298 Function ................................ 298
Warning message......... 494, 495
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H
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*: Refer to “NAVIGATION AND MULTIMEDIA SYSTEM OWNER
’S MANUAL”.