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.
2011 BMW 128i 2D Convertible, N51, StandardFACTORY OEM SERVICE PROCEDURE
Electrical Drives - Repair
- Electric Motor
- Central Locking Unit/Unlocking
- Mirror Adjustment
- Servo/Positioning Drives
- Drive, Seat Adjustment
- 67 31 531 Removing And Installing/Replacing Drive Unit For Backrest Angle Adjustment
- 67 31 501 Removing And Installing/Replacing Forward/Back Seat Adjustment Drive Unit
- 67 31 521 Removing And Installing/Replacing Drive Unit For Seat Height Adjustment
- 67 31 511 Removing And Installing/Replacing Drive Unit For Seat Tilt Adjustment
- 67 66 010 Removing And Installing/Replacing Lumbar Support Drive Mechanism On Front Seat, Left Or Right
- Drive, Slide Tilt Sunroof Convertible Top
- Drive, Power Window
- Drive, Wiper/Headlight
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.
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