2013 TOYOTA 4RUNNER maintenance

564 4-3. Do-it-yourself maintenance
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
4AIR PMP HTR10 AAir pump heater, AI combina-
tion valve
5PTC HTR NO.230 A
PTC heater
6SUB BATT30 ATrailer sub battery
7PTC HTR NO.150 A
PTC heater
8MIR HTR10 AOutside rear view mirror defog-
gers
9TOWING TAIL30 A
Trailer tail light
10A/C COMP10 AAir conditioning system
11STOP10 A
Stop/tail lights
12IG220 AINJ, IGN, GAUGE fuses
13HORN10 AHorn(s)
14EFI 25 AMultiport fuel injection system/
sequential multiport fuel injec-
tion system
CTH43AS146

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4-3. Do-it-yourself maintenance
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Maintenance and care
4RUNNER_U
15A/F20 A
A/F sensor
16H-LP RH-HI10 ARight-hand headlight (high
beam)
17H-LP LH-HI10 ALeft-hand headlight (high
beam)
18HTR50 A
Air conditioning system
19400W INV 80 APower outlets
20ST30 A
Starter system
21H-LP HI20 AH-LP RH-HI, H-LP LH-HI fuses
22ALT-S7.5 A Charging system
23TURN&HAZ15 ATurn signal lights, emergency
flashers
24ETCS10 AMultiport fuel injection system/
sequential multiport fuel injec-
tion system
25PRB30 A
Automatic running boards sys-
tem
26TOWING30 A
Trailer stop/turn lights
27SHORT PIN 
No circuit
28RAD NO.1 10 A Audio system
29AM27.5 A Starter system
30MAYDAY 7.5 A
MAYDAY
31AMP30 AAudio system
32ABS NO.150 AABS, VSC
33ABS NO.230 A
ABS, VSC
34AIR PMP50 AAIR PMP MTR
35DOME10 AInterior lights, vanity lights
36ECU-B10 AMultiplex communication sys-
tem, meter and gauge
37H-LP RH-LO10 ARight-hand headlight (low
beam)
38H-LP LH-LO10 A
Left-hand headlight (low beam)
39INJ10 AMultiport fuel injection system/
sequential multiport fuel injec-
tion system
FuseAmpereCircuit

566 4-3. Do-it-yourself maintenance
4RUNNER_U*: Replace the fuse with one of th
e same ampere rating as the origi-
nal
40EFI NO.27.5 A Multiport fuel injection system/
sequential multiport fuel injec-
tion system
41ALT140 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, AIR PMP HTR
42SPARE10 A

43SPARE15 A
44SPARE20 A
45P/I-B80 A
IG2, EFI, A/F, HORN fuses
46SECURITY10 AMultiport fuel injection system/
sequential multiport fuel injec-
tion system
47SMART 7.5 A
Smart key system
48STRG LOCK 20 ASteering lock system
49TOWING BRK30 A
Trailer brake controller
FuseAmpereCircuit

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4-3. Do-it-yourself maintenance
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Maintenance and care
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■
Driver’s side instrument panel
FuseAmpereCircuit
1TA I L10 A Stop/tail lights
2PA N E L7.5 A Instrument panel lights
3GAUGE7.5 A Meter and gauge
4IGN10 A Multiport fuel injection system/
sequential multiport fuel injec-
tion system, air bag system,
smart key system
5WASHER20 A Wiper and washer
6WIP30 A Wiper and washer
7S/ROOF 25 A Electric moon roof
8DOOR RR25 A Power windows
9DOOR D25 A Power windows
10DOOR BACK30 A
Multiplex communication sys-
tem
11DOOR P30 A Power windows
12P/SEAT FR 30 A Front passenger's power seat
13S/HTR FR 20 A Seat heater system
14ECU-IG NO.210 AAir conditioning system, multi-
port fuel injection system/
sequential multiport fuel injec-
tion system
15IG17.5 A
Turn signal lights, emergency
flashers
16ECU-IG NO.110 AVehicle stability control sys-
tem, tire pressure warning sys-
tem, steering sensor
17DOOR7.5 A Power windows

568 4-3. Do-it-yourself maintenance
4RUNNER_U
18DOOR RL25 A Power windows
19AM17.5 A Starter system
20A/C7.5 A Air conditioning system
21OBD7.5 A On-Board diagnosis
22FOG FR 15 A Fog lights
23D/L NO.225 AMultiplex communication sys-
tem
24P/SEAT FL30 A Front driver’s power seat
254WD 20 A Four wheel drive system
26KDSS 10 AKinetic dynamic suspension
system
27TOWING BKUP10 A Trailer back-up lights
28BKUP LP10 A Back-up lights
29ACC7.5 A Multiport fuel injection system/
sequential multiport fuel injec-
tion system
30P/OUTLET15 A Power outlets
FuseAmpereCircuit

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Maintenance and care
4RUNNER_U
■
After a fuse is replaced
● If the lights do not turn on even after the fuse has been replaced, a bulb
may need replacement. ( P. 570)
● 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.
CAUTION
■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 indicated, 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 by your
Toyota dealer as soon as possible.

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4-3. Do-it-yourself maintenance
4RUNNER_U
Light bulbs
You may replace the following bulbs yourself. The difficulty level of
replacement varies depending on the bulb. If necessary bulb
replacement seems difficult to perform, contact your Toyota dealer.
For more information about replacing other light bulbs, contact your
Toyota dealer.
■ Preparing for light bulb replacement
Check the wattage of the light bulb to be replaced. ( P. 648)
■ Removing the engine compartment cover
P. 527
■ Front bulb locations
CTH43AS140
Parking light
and front side
marker light
Fog light Headlight high beam Headlight low beam
Front turn signal light and
daytime running light

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4-3. Do-it-yourself maintenance
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Maintenance and care
4RUNNER_U
Replacing light bulbs
■ Headlight
Turn the bulb base counterclock-
wise.
High beam (inside)
Low beam (outside)
■Rear bulb locations
CTH43AS102
License plate lights
Rear turn signal
light
Back-up light Stop/tail and rear
side marker light
CTH43AS126
STEP 1