Subaru Impreza (2017 – 2021) Fuse Box Location & Diagrams
The Subaru Impreza (2017–2021) features multiple fuse boxes that protect its electrical circuits and vehicle systems. Knowing their locations and fuse assignments helps identify electrical faults, replace blown fuses, and maintain essential components such as lighting, power windows, climate control, and audio systems.
Fuse Box Location
Passenger Compartment Fuse Box
The fuse box is located behind the cover to the left of the steering wheel.
Engine Compartment Fuse Box
1) Spare fuses
Fuse Box Diagram
Passenger Compartment Fuse Box
| № | Amp rating | Circuit |
|---|---|---|
| 1 | Empty | – |
| 2 | 20A | CIGAR SEAT/H |
| 3 | 7.5A | IG A-1 |
| 4 | 15A | AUDIO NAVI |
| 5 | 15A | IG B-2 |
| 6 | Empty | – |
| 7 | 15A | 12V SOCKET |
| 8 | 15A | A/C IG |
| 9 | 7.5A | ACC |
| 10 | 7.5A | IG B-1 |
| 11 | Empty | – |
| 12 | Empty | – |
| 13 | 7.5A | IG A-3 |
| 14 | 7.5A | UNIT +B |
| 15 | 7.5A | METER IG |
| 16 | Empty | – |
| 17 | 7.5A | MIRROR |
| 18 | 7.5A | LAMP IG |
| 19 | 10A | IG A-2 |
| 20 | 10A | SRS AIR BAG |
| 21 | Empty | – |
| 22 | 15A | STRG/H |
| 23 | 10A | DRL |
| 24 | Empty | – |
| 25 | Empty | – |
| 26 | 10A | BACK UP |
| 27 | 10A | 2019-2021: A/C +B |
| 28 | 20A | TRAIL R.FOG |
| 29 | Empty | – |
| 30 | Empty | – |
| 31 | Empty | – |
| 32 | 7.5A | ILLUMI |
| 33 | 7.5A | KEY SW A |
| 34 | Empty | – |
| 35 | Empty | – |
| 36 | 7.5A | KEY SW B |
| 37 | 7.5A | STOP |
| 38 | 7.5A | EYE SIGHT |
Engine Compartment Fuse Box
| № | Amp rating | Circuit |
|---|---|---|
| A | Main fuse | |
| 1 | 7.5A | HORN 2 |
| 2 | 7.5A | HORN 1 |
| 3 | 15A | H/L LO RH |
| 4 | 15A | H/L LO LH |
| 5 | 7.5A | 2017-2018: ACTGS |
| 6 | 10A | H/L HI RH |
| 7 | 10A | H/L HI LH |
| 8 | 10A | TAIL |
| 9 | 10A | ODS |
| 10 | 7.5A | OBD |
| 11 | 7.5A | PU B/UP |
| 12 | 30A | JB-B |
| 13 | 15A | HAZARD |
| 14 | 20A | FUEL |
| 15 | 7.5A | 2017-2018: D-OP+B |
| 16 | 10A | MB-B |
| 17 | 15A | D/L |
| 18 | 10A | DCM |
| 19 | 20A | TCU |
| 20 | 7.5A | CVT SSR |
| 21 | 15A | IG COIL |
| 22 | 10A | AVCS |
| 23 | 10A | E/G2 |
| 24 | Empty | – |
| 25 | Empty | – |
| 26 | 20A | O2 HTR |
| 27 | 15A | E/G1 |
| 28 | Empty | – |
| 29 | 30A | BACKUP |
| 30 | 25A | R. DEF |
| 31 | 20A | AUDIO |
| 32 | 30A | VDC SOL |
| 33 | 25A | MAIN FAN |
| 34 | 25A | SUB FAN |
| 35 | 10A | DEICER |
| 36 | 15A | 2017-2021: F. FOG 2019: F.FOG, AGS |
| 37 | 15A | BLOWER |
| 38 | 15A | BLOWER |
| 39 | Empty | – |
| 40 | 30A | F. WIPER |
| 41 | 15A | F. WASH |
| 42 | 15A | R. WIPER |
| 43 | Empty | – |
| 44 | Empty | – |
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