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 Ascent BaseFACTORY OEM SERVICE PROCEDURE
Data Communication Module
- Disconnect the ground terminal from battery sensor. Ref. to REPAIR CONTENTS>NOTE>BATTERY .
- Remove the grille ventilation assembly center. Ref. to AIR CONDITIONER>Air Vent Grille>REMOVAL>CENTER GRILLE ASSEMBLY .
- Remove the switch assembly hazard. Ref. to LIGHTING SYSTEM>Hazard Switch>REMOVAL .
- Remove the audio assembly or navigation assembly. Ref. to ENTERTAINMENT & MONITORING>Audio>REMOVAL .
- Remove the backup unit. Ref. to SECURITY AND LOCKS>Backup Unit>REMOVAL .
- Remove the data communication module.
CAUTION:
Do not drop or apply any impact to the data communication module.
NOTE:
Remove the screws on LH side in the same procedure as on the RH side.
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.