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

WARNING: This page is about a different car, the 2007 BMW M6, 2006 BMW M6, 2005 BMW 645Ci, and 2004 BMW 645Ci. However, it is still accessible from the selected car via links, so may be relevant.

Special tools required:

NOTE: For special tools, refer to SEATS - SPECIAL TOOLS - 645CI (E63) .

52 0 050

Necessary preliminary tasks:

Remove rear panel on front seat, refer to 52 14 198 REMOVING AND INSTALLING/REPLACING REAR PANEL ON LEFT OR RIGHT FRONT SEAT BACKREST (NORMAL/ELECTRIC) or 52 16 198 REMOVING AND INSTALLING/REPLACING REAR PANEL ON FRONT LEFT OR RIGHT SEAT BACKREST (SPORTS/ELECTRIC) .

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 From Backrest Frame (E83)

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E63:

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

Disconnect all retainers.

Detach partial cover (2) from backrest frame.

Fig 2: Detaching Tensioning Cables From Backrest Frame (E63)

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Installation:

Lock new retainers by bending with special tool 52 0 050.

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: Disconnecting Air Hoses From Valve Housing

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Release screw (1) from inside.

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

Fig 4: Removing Valve Housing With Metal Nut

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Installation:

Pay attention to seat heating cable guide (1).

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

Fig 5: Identifying Seat Heating Cable Guide And Air Hoses Without Kinks

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Check function.