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.

2017 Subaru WRX BaseFACTORY OEM SERVICE PROCEDURE

Engine Control Module (ECM): Removal

WARNING: This page is about a different variant/trim than selected.

Disconnect the ground cable from battery.
Remove the glove box. <Ref. to REMOVAL , Glove Box.>
Disconnect the connectors from the ECM and driver's control center differential control module.

Fig 1: Locating Driver Control Center Differential Control Module Connectors
Courtesy of SUBARU OF AMERICA, INC.
Push down the claws, and remove the relay block.
Remove the bolts and nuts, and remove the ECM.

Fig 2: Locating ECM Bolts And Nuts
Courtesy of SUBARU OF AMERICA, INC.
Remove the driver's control center differential control module.

Fig 3: Locating Driver Control Center Differential Control Module Screws
Courtesy of SUBARU OF AMERICA, INC.

Factory Service Tools

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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.