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.
2018 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
Relay And Fuse: Location
| Main Fuse Box | Fuse 30A (VDC CONTROL MODULE & H/U) | (A) | ||
| Fuse 40 A (VDC CONTROL MODULE & H/U) | (B) | |||
| Relay Holder | Brake Light Relay(1) | (C) | ||
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NOTE:
For other related fuses, refer to the wiring system. Ref. to WIRING SYSTEM>Power Supply Circuit
.
Factory Service Tools
Use the Manual With the Right Hardware
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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.
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