Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2004 Subaru Baja Base, AutomaticFACTORY OEM SERVICE PROCEDURE
Control Units
CONTROL UNITS LOCATION
| Component | Location |
|---|---|
| ABS Control Module (F49) | Right side of engine compartment. See Figure. |
| Cruise Control Module (2.5L) (B94) | Behind right side of dash. See Figure. |
| Daytime Running Light Control Module (2.5L) (B96, B242) | Behind left center of dash. See Figure. |
| Daytime Running Light Control Module (3.0L) (B96, B242) | Behind left center of dash. See Figure. |
| Engine Control Module (2.5L) (B84, B134, B135, B136, B137) | In passenger side front footwell below carpet and protective panel. See Figure. |
| Engine Control Module (3.0L) (B134, B135, B136, B137) | In passenger side front footwell below carpet and protective panel. See Figure. |
| Fuel Gauge Sub Module (Pick-Up) (R59) | On top of fuel tank. See Figure. |
| Fuel Gauge Sub Module (Sedan) (R59) | On top of fuel tank. See Figure. |
| Fuel Gauge Sub Module (Wagon) (R59) | On top of fuel tank. See Figure. |
| Fuel Pump Assembly & Fuel Gauge Module (Pick-Up) (R58) | On top of fuel tank. See Figure. |
| Fuel Pump Assembly & Fuel Gauge Module (Sedan) (R58) | On top of fuel tank. See Figure. |
| Fuel Pump Assembly & Fuel Gauge Module (Wagon) (R58) | On top of fuel tank. See Figure. |
| Fuel Pump Control Module (Pick-Up) (R122) | Near fuel tank. See Figure. |
| Fuel Pump Control Module (Sedan) (R122) | Left side of trunk. See Figure. |
| Fuel Pump Control Module (Wagon) (R122) | Left side of luggage compartment. See Figure. |
| Hydraulic Module (VDC) (F91) | Right side of engine compartment. See Figure. |
| Integrated Module (2.5L) (B280, B281) | Lower left side of dash. See Figure. |
| Integrated Module (3.0L) (B280. B281) | Lower left side of dash. See Figure. |
| Keyless Entry Control Module (2.5L) (B176) | Behind right side of dash. See Figure. |
| Keyless Entry Control Module (3.0L) (B176) | Behind right side of dash. See Figure. |
| Rear Wiper Intermittent Module (Wagon) (R116) | At right rear or cargo compartment. See Figure. |
| Security Control Module (2.5L) (B93) | Behind center of dash. See Figure. |
| Security Control Module (3.0L) (B93) | Behind center of dash. See Figure. |
| Stop & Turn Module (2.5L) (B333) | Behind left side of dash. See Figure. |
| Sunroof Control Module (Wagon) (R55) | At rear of sun roof opening. See Figure. |
| Transmission Control Module (2.5L) (B54, B55, B56) | Behind left side of dash. See Figure. |
| Transmission Control Module (3.0L) (B54, B55, B56) | Behind left side of dash. See Figure. |
| Turn & Hazard Module (2.5L) (B32) | Behind left side of dash. See Figure. |
| Turn & Hazard Module (3.0L) (B32) | Behind left side of dash. See Figure. |
| VDC Control Module (F87) | At left rear corner of engine compartment. See Figure. |
| Vehicle Interface Module (I71, I72, I73) | Behind lower right side of dash. See Figure. |
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
Disclosure: Verified tool recommendations may earn an affiliate commission at no cost to you.
When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
Rather have a pro handle this?
A certified mobile mechanic comes to your home or office. They bring the tools, you stay comfortable. No tow truck, no waiting room, no surprises.
Comes to youSame-day available12-month warranty
Get a Free QuoteNo obligation. See pricing before you book.