2012 TOYOTA 4RUNNER fuses

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4RUNNER_U
5
4-1. Maintenance and careCleaning and protecting the vehicle exterior............ 502
Cleaning and protecting the vehicle interior............. 505
4-2. Maintenance Maintenance requirements ..................... 508
General maintenance.......... 511
Emission inspection and maintenance (I/M)
programs........................... 515
4-3. Do-it-yourself maintenance Do-it-yourself service precautions ....................... 516
Hood ................................... 519
Engine compartment ........... 520
Tires .................................... 537
Tire inflation pressure ......... 543
Wheels ................................ 547
Air conditioning filter............ 550
Wireless remote control/ electronic key battery ........ 552
Checking and replacing fuses ................................. 555
Light bulbs........................... 565 5-1. Essential information
Emergency flashers............ 578
If your vehicle needs to be towed........................... 579
If you think something is wrong ............................... 585
Fuel pump shut off system .............................. 586
5-2. Steps to take in an emergency
If a warning light turns on or a warning buzzer
sounds.............................. 587
If you have a flat tire ........... 603
If the engine will not start.... 616
If the shift lever cannot be shifted from P .............. 618
If you lose your keys........... 619
If you cannot operate back door opener ............. 620
If the electronic key does not operate properly ......... 621
If the vehicle battery is discharged........................ 623
If your vehicle overheats .... 627
If the vehicle becomes stuck ................................. 630
If your vehicle has to be stopped in an
emergency ....................... 631
4Maintenance and care5When trouble arises

410 3-4. Using the hands-free phone system (for cellular phone)
4RUNNER_U
■Steering wheel switches
Vo l u m e
The voice guidance volume
cannot be adjusted using this
button.
On-hook switch
Turns the hands-free sys-
tem off/ends a call/refuses a
call
Off-hook switch
Turns the hands-free sys-
tem on/starts a call
Talk switch
Turns the voice command
system on (press)/turns the
voice command system off
(press and hold)
■ Microphone
CTH32AS047
CTH33AS001

Maintenance and care4
501
4RUNNER_U
4-1. Maintenance and careCleaning and protecting the vehicle exterior ......... 502
Cleaning and protecting the vehicle interior .......... 505
4-2. Maintenance Maintenance requirements .................. 508
General maintenance....... 511
Emission inspection and maintenance (I/M)
programs ........................ 515
4-3. Do-it-yourself maintenance
Do-it-yourself service precautions .................... 516
Hood ................................ 519
Engine compartment ........ 520
Tires ................................. 537
Tire inflation pressure ...... 543
Wheels ............................. 547
Air conditioning filter......... 550
Wireless remote control/ electronic key battery
....... 552
Checking and replacing fuses .............................. 555
Light bulbs........................ 565

517
4-3. Do-it-yourself maintenance
4
Maintenance and care
4RUNNER_U
ItemsParts and tools
Fuses
(P. 555)• Fuse with same amperage rating
as original
Light bulbs (P. 565)
• Bulb with same number and watt-
age rating as original
• Phillips-head screwdriver
• Flathead screwdriver
• Wrench
Power steering fluid level (P. 530)
• Automatic transmission fluid
DEXRON® II or III
• Rag or paper towel
• Clean funnel
Radiator and condenser (P. 527)
Tire inflation pressure ( P. 543)• Tire pressure gauge
• Compressed air source
Washer fluid (P. 535)
• Water or washer fluid containing
antifreeze (for winter use)
• Funnel (used only for adding water or washer fluid)

555
4-3. Do-it-yourself maintenance
4
Maintenance and care
4RUNNER_U
Checking and replacing fuses
If any of the electrical components do not operate, a fuse may have
blown. If this happens, check and replace the fuses as necessary.
Vehicles without a smart key system
Turn the engine switch off.
Vehicles with a smart key system
Turn the “ENGINE START STOP” 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.STEP 1
STEP 2
CTH43AS123
CTH43AS028

559
4-3. Do-it-yourself maintenance
4
Maintenance and care
4RUNNER_U
Fuse layout and amperage ratings
■ Engine compartment
FuseAmpereCircuit
1PTC HTR NO.330 A
PTC heater
2DEF30 ARear window defogger
3DEICER 20 A
Windshield wiper de-icer
4PTC HTR NO.230 APTC heater
5SUB BATT30 ATrailer sub battery
6PTC HTR NO.150 A
PTC heater
7MIR HTR10 AOutside rear view mirror defog-
gers
8TOWING TAIL30 A
Trailer tail light
9A/C COMP10 AAir conditioning system
10STOP10 A
Stop/tail lights
11IG220 AINJ, IGN, GAUGE fuses
12HORN10 AHorn(s)
13EFI 25 AMultiport fuel injection system/
sequential multiport fuel injec-
tion system
14A/F20 A
A/F sensor
CTH43AS139

560 4-3. Do-it-yourself maintenance
4RUNNER_U
15H-LP RH-HI10 ARight-hand headlight (high
beam)
16H-LP LH-HI10 ALeft-hand headlight (high
beam)
17HTR50 A
Air conditioning system
18400W INV 80 APower outlets
19ST30 AStarter system
20H-LP HI20 A
H-LP RH-HI, H-LP LH-HI fuses
21ALT-S7.5 A Charging system
22TURN&HAZ15 ATurn signal lights, emergency
flashers
23ETCS10 AMultiport fuel injection system/
sequential multiport fuel injec-
tion system
24PRB30 A
Automatic running boards sys-
tem
25TOWING30 A
Trailer stop/turn lights
26SHORT PIN 
No circuit
27RAD NO.1 10 A Audio system
28AM27.5 A Starter system
29MAYDAY 7.5 AMAYDAY
30AMP30 A
Audio system
31ABS NO.150 AABS, VSC
32ABS NO.230 AABS, VSC
33DOME10 A
Interior lights, vanity lights
34ECU-B10 AMultiplex communication sys-
tem, meter and gauge
35H-LP RH-LO10 ARight-hand headlight (low
beam)
36H-LP LH-LO10 A
Left-hand headlight (low beam)
37INJ10 AMultiport fuel injection system/
sequential multiport fuel injec-
tion system
38EFI NO.27.5 A Multiport fuel injection system/
sequential multiport fuel injec-
tion system
FuseAmpereCircuit

561
4-3. Do-it-yourself maintenance
4
Maintenance and care
4RUNNER_U
*: Replace the fuse with one of th
e same ampere rating as the origi-
nal
39ALT140 A* HTR, 400W INV, A/C COMP,
TOWING TAIL, SUB BATT,
MIR HTR, DEF, DEICER,
STOP, PTC HTR NO.1, PTC
HTR NO.2, PTC HTR NO.3,
S/HTR FR, ACC, P/OUTLET,
IG1, ECU-IG NO.1, ECU-IG
NO.2, WIP, WASHER, KDSS,
4WD, BKUP LP, TOWING
BKUP, DOOR P, DOOR RL,
DOOR RR, DOOR D, P/SEAT
FL, P/SEAT FR, DOOR, A/C,
OBD, DOOR BACK, S/ROOF,
PANEL, TAIL, FOG FR, D/L
NO.2 fuses
40SPARE10 A

41SPARE15 A
42SPARE20 A
43P/I-B80 A
IG2, EFI, A/F, HORN fuses
44SECURITY10 AMultiport fuel injection system/
sequential multiport fuel injec-
tion system
45SMART 7.5 A
Smart key system
46STRG LOCK 20 ASteering lock system
47TOWING BRK30 A
Trailer brake controller
FuseAmpereCircuit