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.
Removal Procedure
The door ajar switch is contained within the lock of the rear door. Therefore replacement of the lock will include the replacement of the rear door ajar switch.
Remove the right side rear door trim panel. Refer to Rear Side 60/40 Door Trim Panel Replacement - Right Side (E24, 40 Door) , or Rear Side 60/40 Door Trim Panel Replacement - Right Side (E24, 60 Door) .
- Remove the lock rods (3, 4, 5) from the lock (1).
- Disconnect the electrical connector from the lock (1).
- Remove the 3 screws (2) that retain the lock (1) to the right side rear door.
- Remove the lock (1) from the right side rear door.
- Remove the lock (1) from the vehicle.
NO RELATED
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.