67 66 012 Removing and installing/replacing drive unit for lumbar support on left or right front seat (comfort seat)

WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 2005 BMW 745i, 2005 BMW 745Li, 2004 BMW 745i, 2004 BMW 745Li, and 2003 BMW 745i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove both rear panels on front seat, refer to 52 17 200 REMOVING AND INSTALLING/REPLACING UPPER REAR PANEL ON LEFT OR RIGHT FRONT SEAT BACKREST (COMFORT) and 52 17 202 REMOVING AND INSTALLING/REPLACING LOWER REAR PANEL ON LEFT OR RIGHT FRONT SEAT BACKREST (COMFORT)

If necessary, unhook backrest cover (1) from backrest.

Fig 1: Removing Valve Unit

G03291366

Courtesy of BMW OF NORTH AMERICA, INC.

Cut through cable ties (2).

Unclip wiring harness at point (3) towards front.

Release screw (4) and feed out valve unit (5) towards top.

Cut through cable tie (1).

Fig 2: Pushing Jacket Of Drive Unit For Lumbar Support

G03291367

Courtesy of BMW OF NORTH AMERICA, INC.

Push jacket of drive unit for lumbar support (2) in direction of arrow over drive unit for lumbar support (3).

Disconnect plug connection (1).

Fig 3: Removing Drive Unit For Lumbar Support

G03291368

Courtesy of BMW OF NORTH AMERICA, INC.

Detach hose (2).

NOTE: If firmly seated, gently heat hose (2) on drive unit for lumbar support (3).

Installation:

Make sure hose (2) is laid without kinks.

Remove drive unit for lumbar support (3).

Replacement:

Pull drive unit for lumbar support (3) out of jacket (4).