Removing and Installing/Replacing Lumbar Cushion on Front Seat

52 14 050 - Replacing lumbar cushion on front left or right seat





Special tools required:
- 52 0 050 Tools and Equipment
- 64 1 020 64 1 020 Release Hook





Necessary preliminary tasks:
- Remove rear panel on front seat





Detach tensioning cables (1) from backrest frame.
Disconnect all retainers.
Detach partial cover (2) from backrest frame.

Installation:
Lock new retainers by bending with special tool 52 0 050 Tools and Equipment.





Detach drive unit (1) for lumbar cushion from backrest frame.

Installation:
If necessary, use new adhesive tape (double-sided).

Detach backrest cover (2) from backrest frame by lifting out piping.

Note:
If necessary, use special tool 64 1 020 64 1 020 Release Hook.





Note:
If necessary, gently heat air hose when firmly seated.

Disconnect hoses (2) and (3) from valve housing (1).

2 - Hose (blue) top cushion
3 - Hose (red) bottom cushion

Installation Note:
Air hoses (2) and (3) must be laid without kinks.





Detach lumbar cushion (1) from spring wire (2).
Version with seat heating:
Slide cable (3) for seat heating to one side.





Press back support (1) a little.
Turn lumbar cushion (2) and pull out downwards.





Installation:
Check lumbar cushion at top (1) and bottom (2) for damage.
Air hoses (3) must not be kinked.





Installation:
Attach lumbar cushion (1) to third wire (2) above spring (3).





Note:
For purposes of clarity, shown here without valve housing.

Installation:
Pay attention to seat heating cable guide (1).
Lay air hoses (2) without kinks through hole (3).





Installation:
Check function.