Subaru Impreza (2003) – fuse box diagram
Year of production: 2003
Fuse panel located behind the coin tray
| Fuse | Ampere rating [A] | Circuit |
| 1 | 15 | Heater fan |
| 2 | 15 | Heater fan |
| 3 | 15 | Power door lock, Remote keyless entry |
| 4 | 20 | Cigarette lighter, Remote controlled rear view mirrors |
| 5 | 10 | Tail light, Parking light |
| 6 | 15 | SRS airbag |
| 7 | 15 | Fog light |
| 8 | 20 | ABS solenoid |
| 9 | 15 | Radio |
| 10 | — | — |
| 11 | 15 | Engine ignition system, SRS airbag, AT control system |
| 12 | 10 | Illumination brightness control |
| 13 | 10 | Combination meter, SRS lamp |
| 14 | 15 | Rear window wiper and washer |
| 15 | 20 | Windshield wiper and washer, Rear window wiper and washer |
| 16 | 20 | Brake light |
| 17 | 15 | Air conditioner |
| 18 | 15 | Backup light, Cruise control |
| 19 | 20 | Mirror heater |
| 20 | — | — |
| 21 | — | — |
| 22 | 10 | ABS ignition |
| 23 | 20 | Accessory power outlet (cargo), Seat heater |
Fuse panel located in the engine compartment
| Fuse | Ampere rating [A] | Power consumer |
| 1 | 20 | Radiator cooling fan (Main) |
| 2 | 20 | Radiator cooling fan (Sub) |
| 3 | 30 | ABS motor |
| 4 | 20 | Rear window defogger |
| 5 | 15 | Hazard warning, flasher, Horn |
| 6 | 15 | Turn signal lights |
| 7 | 10 | Automatic transmission control unit |
| 8 | 10 | Alternator |
| 9 | 15 | Headlight (right side) |
| 10 | 15 | Headlight (left side) |
| 11 | 20 | Lighting switch |
| 12 | 15 | Clock, Interior light |
| 13 | — | FWD socket (except Turbo model) |
| 14 | — | Main fuse |
WARNING: Terminal and harness assignments for individual connectors will vary depending on vehicle equipment level, model, and market.