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Home >> BMW >> 2005 >> 330xi Standard >> Repair and Diagnosis (Single Page) >> Body & Frame >> Windows >> Electrical Drives - Repair >> Drive, Seat Adjustment >> 67 66 013 Removing and installing/replacing drive unit for lumbar support on left or right front seat (sports seat)

67 66 013 Removing and installing/replacing drive unit for lumbar support on left or right front seat (sports seat)

Remove rear panel on front seat backrest. See 52 13 198 REMOVING AND INSTALLING / REPLACING REAR PANEL ON LEFT OR RIGHT FRONT SEAT BACKREST (NORMAL/MANUAL)

Detach backrest cover (1) from backrest frame (2).

Fig 1: Detaching Backrest Cover From Backrest Frame
G03125603Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

Detach transparent hose (2) from valve housing (3).

NOTE: If necessary, gently heat transparent hose (2) if firmly seated.

If necessary, detach fabric adhesive tape (4).

Fig 2: Disconnecting Plug Connection
G03125604Courtesy of BMW OF NORTH AMERICA, INC.

Detach drive unit for lumbar support (5) with jacket towards rear.

Installation: 

Clean adhesive area (1) on backrest frame (2).

Fig 3: Identifying Clean Adhesive Area On Backrest Frame
G03125605Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Transparent hose (1) of drive unit for lumbar support must not be kinked.

Pull off protective film (3) from jacket (2). Stick drive unit for lumbar support to backrest frame.

If necessary, secure jacket (2) with cable strap.

Fig 4: Pulling Off Protective Film From Jacket
G03125606Courtesy of BMW OF NORTH AMERICA, INC.