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.
2021 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE
Electrical Component Locations
Select a section or procedure below to view factory instructions:
Air Bag SystemBlind Spot Detection/Rear Cross Traffic Alert SystemBody Control SystemBrake Vacuum Control (BVC)Continuously Variable TransmissionCruise Control SystemEngine Control System (2.0L)Engine Control System (2.5L)Exterior LightsHVAC SystemImmobilizer SystemInstrumentation SystemLAN Communication SystemManual Transmission And Differential (6MT)Multi-Function DisplayOccupant Detection SystemPower Steering SystemReverse Automatic Braking SystemSecurity And Locks - Keyless Access (W/Push Button Start)SUBARU Eyesight Assist Monitor (Driver Assist)SUBARU Eyesight System (Driver Assist)Telematics SystemTire Pressure Monitoring System (TPMS)
Factory Service Tools
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.