52 14 060 Removing and installing / replacing valve housing for front left or right lumbar support (normal / manual)

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Special tools required:

52 0 050 . See SEATS - SPECIAL TOOLS .

Necessary preliminary tasks:

Remove rear panel on front seat

E83:

If necessary, detach tensioning cables from backrest frame (2).

Detach backrest cover (1) in direction of arrow from backrest frame (2).

Fig 1: Detaching Backrest Cover

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E63:

Detach tensioning cables (1) from backrest frame (2).

Disconnect all retainers.

Detach partial cover (2) from backrest frame.

Installation:

Lock new retainers by bending with special tool 52 0 050 . See SEATS - SPECIAL TOOLS .

Fig 2: Identifying Tensioning Cables And Partial Cover

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Disconnect plug connection (5).

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

Disconnect air hoses (2...4) from valve housing (1).

2 Hose (blue) top cushion
3 Hose (clear) lumbar drive
4 Hose (red) bottom cushion

Fig 3: Identifying Plug Connection And Air Hoses
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Release screw (1) from inside.

Remove valve housing (3) with metal nut (2).

Fig 4: Identifying Valve Housing

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Installation:

Pay attention to seat heating cable guide (1).

Lay air hoses (2) without kinks through hole (3).

Check function.

Fig 5: Identifying Seat Heating Cable Guide And Air Hoses

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