2021 TOYOTA 4RUNNER fuses

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4RUNNER (U)6-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 392
Cleaning and protecting the vehicle interior ........... 395
6-2. Maintenance Maintenance requirements ................... 398
General maintenance ........ 400
Emission inspection and maintenance (I/M)
programs ......................... 403
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 404
Hood.................................. 407
Engine compartment ......... 408
Tires .................................. 422
Tire inflation pressure........ 436
Wheels .............................. 439
Air conditioning filter .......... 441
Wireless remote control/ electronic key
battery ............................. 443
Checking and replacing fuses ............................... 446
Light bulbs ......................... 449 7-1. Essential information
Emergency flashers ........... 462
If your vehicle has to be stopped in an
emergency....................... 463
If the vehicle is trapped in rising water ...................... 465
7-2. Steps to take in an emergency
If your vehicle needs to be towed .......................... 466
If you think something is wrong............................... 472
Fuel pump shut off system ............................. 473
If a warning light turns on or a warning buzzer
sounds ............................. 474
If a warning message is displayed ......................... 484
If you have a flat tire .......... 489
If the engine will not start ................................. 504
If you cannot operate back door opener ............ 506
If the electronic key does not operate properly
(vehicles with a smart
key system) ..................... 507
If the vehicle battery is discharged ....................... 510
If your vehicle overheats......................... 514
If the vehicle becomes stuck ................................ 517
6Maintenance and care7When trouble arises

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Maintenance and care6
4RUNNER (U)6-1. Maintenance and care
Cleaning and protecting the vehicle exterior .......... 392
Cleaning and protecting the vehicle interior ........... 395
6-2. Maintenance Maintenance requirements ................... 398
General maintenance........ 400
Emission inspection and maintenance (I/M)
programs......................... 403
6-3. Do-it-yourself maintenance
Do-it-yourself service precautions ..................... 404
Hood ................................. 407
Engine compartment ......... 408
Tires .................................. 422
Tire inflation pressure ....... 436
Wheels .............................. 439
Air conditioning filter.......... 441
Wireless remote control/ electronic key battery ...... 443
Checking and replacing fuses ............................... 446
Light bulbs......................... 449

4056-3. Do-it-yourself maintenance
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Maintenance and care
4RUNNER (U)
Fuses (P. 446)• Fuse with same amperage rating as original
Light bulbs (P. 449)
• Bulb with same number and wattage rating as
original
• Phillips-head screwdriver
• Flathead screwdriver• Wrench
Power steering fluid
level ( P. 416)• Automatic transmission fluid DEXRON® II or III
• Rag or paper towel• Clean funnel
Radiator and con-
denser (P. 414)
Tire inflation pressure
( P. 4 3 6 )• Tire pressure gauge
• Compressed air source
Washer fluid
(P. 420)
• Water or washer fluid containing antifreeze (for
winter use)
• Funnel (used only for adding water or washerfluid)
ItemsParts and tools

4466-3. Do-it-yourself maintenance
4RUNNER (U)
Turn the engine switch off.
Open the Fuse box cover.
Engine compartment
Push the tab in and lift the lid off.
Driver’s side instrument panel
Remove the lid.
Remove the fuse with the pull-
out tool.
Only type A fuse can be removed
using the pullout tool.
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may
have blown. If this happens, che ck and replace the fuses as nec-
essary.
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4486-3. Do-it-yourself maintenance
4RUNNER (U)
■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. 449)
● 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.
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.

583Alphabetical index
4RUNNER (U)
Front passenger occupant classification system .............. 46
Front personal lights ............... 358
Front seats ............................... 136 Adjustment ............................ 136
Cleaning................................ 395
Correct driving posture ........... 28
Driving position memory ....... 149
Head restraints ..................... 153
Seat heaters ......................... 355
Seat position memory ........... 149
Seat ventilators ..................... 355
Front side marker lights.......... 225 Light switch ........................... 225
Replacing light bulbs............. 454
Wattage ................................ 529
Front turn signal lights ........... 223
Replacing light bulbs............. 452
Turn signal lever ................... 223
Wattage ................................ 529
Fuel ........................................... 242 Capacity ................................ 522
Fuel gauge .............................. 88
Fuel pump shut off system.... 473
Information ............................ 530
Refueling............................... 242
Type .............................. 242, 522
Warning light ......................... 477
Fuel filler door.......................... 242 Refueling............................... 242
Fuel pump shut off system ..... 473
Fuses ........................................ 446
Garage door opener ................ 384
Gauges ....................................... 88
Glove box ................................. 361
Grocery bag hooks .................. 370 Head restraints ........................ 153
Headlights ................................ 225
Automatic High Beam system .......... ...................... 230
Light switch ........................... 225
Replacing light bulbs .... 451, 459
Wattage ................................ 529
Heaters Air conditioning system ....... ................. 340, 347
Outside rear view mirrors ....................... 342, 349
Seat heaters ......................... 355
Hill-start assist control ........... 321
Hood ......................................... 407
Hooks Cargo hooks ......................... 367
Cargo net hooks ................... 368
Grocery bag hooks ............... 370
Retaining hooks (floor mat) .... 26
Horn .......................................... 156
G
H

587Alphabetical index
4RUNNER (U)
Radiator .................................... 414
Rear differential lock system .................................... 304
Rear seats
Adjustment ............................ 139
Folding down ........ 141, 143, 145
Rear step bumper .................... 132
Rear turn signal lights............. 223
Replacing light bulbs............. 456
Turn signal lever ................... 223
Wattage ................................ 529
Rear view mirror Inside rear view mirror .......... 158
Outside rear view mirrors...... 160
Rear view monitor system
*
Rear window ............................ 166
Rear window defoggers ....................... 342, 349
Rear window wiper .................. 239
Refueling .................................. 242
Capacity ................................ 522
Fuel types ............................. 522
Opening the fuel tank cap ..... 244
Replacing Fuses .................................... 446
Key battery............................ 443
Light bulbs ............................ 449
Tires ...................................... 489
Reporting safety defects
for U.S. owners ...................... 560
Resetting the message indicating maintenance
is required .............................. 399
Roof luggage carrier ............... 186 Safety Connect .......................... 70
Seat belt reminder light .......... 477
Seat belts ................................... 30
Adjusting the seat belt ............ 30
Automatic Locking
Retractor (ALR) .................... 31
Child restra int system
installation ............................ 62
Cleaning and maintaining the seat belt........................ 396
Emergency Locking Retractor (ELR) .................... 31
How to wear your seat belt ..... 30
How your child should wear
the seat belt.......................... 31
Pregnant women, proper
seat belt use ......................... 32
Reminder light and buzzer.... 477
Seat belt extender .................. 31
Seat belt pretensioners........... 31
SRS warning light ................. 475
Seat heaters ............................. 355
Seat position memory ............. 149
Seat ventilators........................ 355
Seating capacity ...................... 191
RS
*: Refer to the “NAVIGATION AND MULTIMEDIA SYSTEM OWNER’S MANUAL”.