54 34 890 Replacing Hall Sensors on Roof Crossbar

54 34 890 Replacing Hall Sensors On Roof Crossbar







Necessary preliminary tasks:
- Remove trim panels
- Remove seals







Open folding sunroof a few centimetres to relieve tension on soft top fabric.

Pull off trim (1) towards rear.







Detach soft top fabric (1) from front bow (2).

Installation:
Replace double-sided adhesive tape.







Unclip front plastic catches (1) in marked area.

If necessary, remove soft top fabric (2) from front bow (front) in direction of arrow.







Detach tension cable (1) at side from roof frame.

Installation:
Secure tension cable (1) to front bow with insulating tape.







Unscrew left and right nuts (1).

Unlock retaining lug (2) on both sides.







Disengage wire bow (1) on both sides.

Carefully release retainers in marked area (2).

Carefully release soft top fabric from crossbar.

Installation:
Replace double-sided adhesive tape.







Release screw (1).

Remove Hall sensor (2).







Raise cover.

Release screw (1).

Remove Hall sensor (2).







Disconnect plug connection (1) from roof crossbar.

Disconnect plug connection (1).

Remove Hall sensors with supply lead.







Installation:
Perform function check and look out for folds in and tensioning of soft top fabric.

Check retaining hooks.

With new soft top fabric, the force of the mechanism may not be sufficient to fully close the retaining hooks.

Open bow and close folding sunroof.

Relock bow.

Soft top fabric is stretched and after settling the retaining hooks are correctly locked again.