2018 - 2021 Subaru WRX Fuse Box Diagram

2021 Subaru WRX

Fuses and Relays

CAUTION
Never replace a fuse with one having a higher rating or with material other than a fuse because serious damage or a fire could result.

The fuses are designed to melt during an overload to prevent damage to the wiring harness and electrical equipment. 

 

Fuse Box Location

 

The fuses are located in two fuse boxes.

 

Instrument Panel Fuse Box Location

One is located under the instrument panel behind the fuse box cover on the driver’s seat side. To remove the cover, pull it out.

1) Spare Fuses Location

The other one (main fuse box) is housed in the engine compartment. Also, the spare fuses are stored in the fuse box cover. 

 

Fuse Puller Location

The fuse puller is stored in the main fuse box in the engine compartment.

 

Good Fuse , Blown Fuse

 

1) Good
2) Blown

If any lights, accessories or other electrical controls do not operate, inspect the corresponding  fuse. If a fuse has blown, replace it.
1. Turn the ignition switch to the “LOCK” / “OFF” position and turn off all electrical accessories.
2. Remove the cover.
3. Determine which fuse may be blown.
Fuse rating and using circuit are described on each behind the fuse box cover. 

 

Fuse Puller

 

4. Pull out the fuse with the fuse puller.
5. Inspect the fuse. If it has blown, replace it with a spare fuse of the same rating.
6. If the same fuse blows again, this indicates that its system has a problem.
Contact your SUBARU dealer for repairs.

Passenger Compartment Fuse Panel

 

Passenger Compartment Fuse Panel Diagram

 

Fuse Table

 

# ..  Fuse rating  ... Circuit
1 20 A R.FOG TRAIL
2 7.5 A METER IG
3 15 A DOOR LOCK
4 10 A IG2
5 Empty
6 7.5 A MIR
7 15 A UNIT+B
8 7.5 A STOP (Stop Light)
9 7.5 A WIPER DEICE
10 7.5 A D-OP+B
11 7.5 A TURN IG
12 15 A UNIT IG1
13 20 A 12 V PLUG
14 10 A TAIL CLEARANCE
15 10 A BKUP+B
16 7.5 A ILM
17 15 A SEAT HTR (Seat Heater)
18 10 A LAMP IG
19 Empty
20 10 A CIGAR (Cigarette Lighter)
21 10 A START
22 7.5 A A/C IG
23 Empty
24 10 A AUDIO NAVI
25 15 A SRS (supplemental restraint system) AIR BAG
26 7.5 A IG1
27 15 A BLOWER
28 15 A BLOWER
29 15 A F.FOG
30 Empty
31 7.5 A ACC
32 7.5 A STR LOCK
33 7.5 A UNIT IG2

Engine Compartment Fuse Panel - STI

 

 Engine Compartment Fuse Panel Diagram - STI (A - Main Fuse)

Fuse Specification Chart

# .. Fuse rating  ... Circuit
1 30 A ABS SOL
2 25 A MAIN FAN (Cooling Fan)
3 25 A SUB FAN  (Cooling Fan)
4 Empty
5 25 A AUDIO AMP
6 30 A H/L LO  - Headlight (low beam)
7 15 A H/L HI  - Headlight (high beam)
8 20 A BACK UP
9 15 A HORN
10 25 A R.DEF  (Rear window defogger)
11 15 A FUEL PUMP
12 10 A (Transmission control unit)
13 7.5 A EGI+B
14 15 A HAZARD
15 15 A LIGHTING
16 7.5 A ALT-S (Alternator)
17 Empty
18 20 A INJ
19 15 A H/L LO RH  (Head Light Low Right Hand)
20 15 A H/L LO LH  (Head Light Low Left Hand)
21 10 A AIR CUT
22 7.5 A (Telematics)

Engine Compartment Fuse Panel - Except STI

 Engine Compartment Fuse Panel Diagram - Except STI (A - Main Fuse)

Fuse Table

 

# .. Fuse rating  ... Circuit

1 30 A ABS SOL
2 25 A MAIN FAN
3 25 A SUB FAN
4 Empty
5 25 A AUDIO AMP
6 30 A H/L LO  (Head Light Low)
7 15 A H/L HI    (Head light High)
8 20 A BACK UP
9 15 A HORN
10 25 A R.DEF
11 15 A FUEL PUMP
12 20 A (Transmission control unit)
13 7.5 A EGI+B
14 15 A HAZARD
15 15 A LIGHTING
16 7.5 A ALT-S (Alternator)
17 Empty
18 20 A INJ
19 15 A H/L LO RH    (Head Light Low Right Hand)
20 15 A H/L LO LH    (Head Light Low Let Hand)