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.
52 14 ... Additional Work (Normal/Electric) With Defective Drive/Gear For Longitudinal Adjustment
Seat rails must be replaced by detaching worm gear.
Move seat height and seat tilt adjustment to top position.
To obtain improved access if necessary:
- Release screws (1).
- Tip seat towards rear.
Installation:
Tightening torque: 52 10 6AZ . See FRONT SEATS for specs.
Lift drive (1) and flex shaft (3) out of guide (2) in direction of arrow.
Detach flex shaft (3) (plug connection).
Release screws (1).
Remove drive (4).
Detach flex shaft (3) with holder (2).
Activate the operating switch for the seat position adjustment:
- No function:
- Disconnect plug connection on drive.
- Connect new drive and check function.
- Gear is O.K. if drive runs.
Assemble seat.
- Drive running:
- Gear for longitudinal seat adjustment defective.
Removing gear for longitudinal seat adjustment:
Release screws (1).
Remove worm gear (2) on left and right with cover.
Release screws (1) on upper rail on left and right.
The seat can now be adjusted together with the upper rail.
Replace BOTH SEAT RAILS .
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.