The Subaru Legacy is a mid-size sedan with all-weather capability produced by Japanese automaker Subaru. It is equipped with signature horizontally-opposed (boxer) engines and standard Symmetrical All-Wheel Drive (AWD). In this article, we provide a detailed overview of the fuse box diagrams for the 4th-generation Subaru Legacy (chassis codes BL / BP; model years 2003, 2004, 2005, 2006, 2007, 2008, 2009) and the 3rd-generation Subaru Outback (BP) equipped with 2.0L, 2.0L Turbo, 2.5L, and 3.0L engines.
Here you will find fuse box locations, diagrams, and photos. Fuses for the “Cigarette Lighter” and “Fuel Pump” are highlighted in bold.
Engine Compartment
The fuse box is located on the driver’s side of the engine compartment, under a protective plastic cover.
General view.
| Fuse Box Diagram – Type 1 | ||
|---|---|---|
|
||
| No. | Circuit Protected | A |
| F1 | Generator / Alternator | 120 |
| F2 | ABS / VDC system | 30 |
| F3 | Spare | 25 |
| F4 | Radiator cooling fan motor | 25 |
| F5 | 25 | |
| F6 | Spare | 20 |
| F7 | Spare | 15 |
| F8 | Left headlight | 15 |
| F9 | Spare | 20 |
| F10 | Horn | 15 |
| F11 | Spare | 25 |
| F12 | Fuel pump (Subaru Legacy) | 15 |
| F13 | Transmission Control Module (TCM) | 15 |
| F14 | Spare | 7.5 |
| F15 | Spare | 15 |
| F16 | Spare | 20 |
| F17 | Generator / Alternator | - |
| F18 | Empty | - |
| F19 | Secondary air injection pump | 60 |
| F20 | Secondary air injection system | 10 |
| F21 | Spare | 50 |
| F22 | Ignition switch circuit | 50 |
| F23 | Spare | 50 |
| F24 | ABS / VDC system | 50 |
| F25 | Spare | 50 |
| F26 | Spare | 30 |
| F27 | Engine management system | 30 |
| F28 | 30 | |
| No. | Relay Modules | |
| 1 | Empty | |
| 2 | Headlight | |
| 3 | ||
| 4 | Heated rear window | |
| 5 | Parking lights | |
| 6 | Horn | |
| 7 | Empty | |
| 8 | Air conditioning system | |
| 9 | High-beam headlights | |
| 10 | Empty | |
| 11 | Secondary air injection pump | |
| 12 | ||
| 13 | ||
| Engine Compartment Fuse Box Diagram (Legacy / Outback) – Type 2 | ||
|---|---|---|
|
||
| No. | Circuit Protected | A |
| 1 | ABS / Vehicle Dynamics Control (VDC) ECU | 30 |
| 2 | Main cooling fan motor (H4 engine) | 25 |
| 3 | Sub cooling fan motor (H6 engine) | 25 |
| 4 | Main cooling fan motor | 25 |
| 5 | Spare | 20 |
| 6 | Right headlight | 15 |
| 7 | Left headlight | 15 |
| 8 | Reverse lights | 20 |
| 9 | Horn | 15 |
| 10 | Rear window defogger | 25 |
| 11 | Fuel pump | 15 |
| 12 | Transmission Control Module (TCM) | 15 |
| 13 | Engine Control Module (ECM) | 7.5 |
| 14 | Turn signal flasher relay | 15 |
| 15 | Parking light switch | 20 |
| 16 | Generator / Alternator | 7.5 |
| Relays | ||
| 1 | Main relay | |
| 2 | Left headlight relay | |
| 3 | Right headlight relay | |
| 4 | Horn relay | |
| 5 | Parking light relay | |
| 6 | Rear window defogger relay | |
|
||
| AC | A/C compressor relay | |
Passenger Compartment
The fuse box is located on the driver’s side, at the bottom of the dashboard behind a plastic cover.
General location view.
| Passenger Compartment Fuse Box Diagram | ||
|---|---|---|
|
||
| No. | Circuit Protected | A |
| 1 | Trailer connector, rear blower motor | 20 |
| 2 | Empty | - |
| 3 | Central locking system | 15 |
| 4 | Relay, windshield wiper de-icer, power sunroof | 15 |
| 5 | Instrument cluster | 15 |
| 6 | Power mirrors, seat heater relay, vanity mirror light | 7.5 |
| 7 | Instrument cluster, Body Integrated Unit (BIU) | 15 |
| 8 | Brake lights | 20 |
| 9 | Heated power mirrors, windshield wiper de-icer | 20 |
| 10 | Power supply | 7.5 |
| 11 | Clock, turn signal flasher relay | 7.5 |
| 12 | Transmission Control Module (TCM), Airbag Control Module (SRS), Engine Control Module (ECM), Body Integrated Unit (BIU) | 15 |
| 13 | 12V power outlet (rear) | 20 |
| 14 | Parking lights, tail lights, combination lights | 15 |
| 15 | Empty | - |
| 16 | Interior illumination | 15 |
| 17 | Seat heaters | 15 |
| 18 | Reverse lights | 10 |
| 19 | Right headlight relay | 7.5 |
| 20 | Cigarette lighter (Legacy / Outback) | 10 |
| 21 | Starter relay | 7.5 |
| 22 | Air conditioning, rear window defogger relay | 15 |
| 23 | Rear window wiper, rear window washer | 15 |
| 24 | Audio system, clock | 15 |
| 25 | Supplemental Restraint System (SRS) | 15 |
| 26 | Power window relay | 15 |
| 27 | Heater blower motor | 15 |
| 28 | 15 | |
| 29 | Front fog lights | 15 |
| 30 | Windshield wiper motor, windshield washer pump | 30 |
| 31 | Climate control module (A/C ECU), Body Integrated Unit (BIU) | 7.5 |
| 32 | Left headlight relay | 7.5 |
| 33 | ABS / Vehicle Dynamics Control (VDC) ECU | 7.5 |
| Relay Panel (Located adjacent to main fuse box) | |
|---|---|
|
|
| F1 | Engine management |
| F2 | Empty |
| F3 | Empty |
| F4 | Empty |
| 1 | Front fog light relay |
| 2 | Empty |
| 3 | Power window relay |
| 4 | Blower motor relay |
| 5 | Rear fog light relay |
| 6 | Heated rearview mirror relay |
| 7 | Windshield wiper de-icer relay |
| 8 | Heated seat relay |
Having problems trying to locate Back-up Lights Relay - USA (Reversing Lights Relay - AU) as per Gregory's Manual #530 Drg.12-66 (connector B356) OR W1-132 (B226). Have reviewed all your Fuse & Relay lay-outs but no mention of a Back-up / Reversing Light Relay. Cannot even located the two terminal connectors B226 or B356 or the OP.Connector, shown on 12-66 but omitted on the W1-132 drawing (possibly the difference between Legacy USA wiring & the Australian Outback 2006 ? Would appreciate it greatly if you could assist in locating the position of this relay as I have no Reversing lights working, whilst in Reverse, engine running & headlights also ON !! Cheers Dennis
Hey buddy it’s the switch right on top of your steering wheel that controls your back lights