67 66 012 Removing And Installing/Replacing Drive Unit For Lumbar Support On Left Or Right Front Seat (Comfort Seat)

WARNING: This page is about a different car, the 2007 BMW 550i and 2006 BMW 550i. 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

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

Cut through cable ties (2).

Unclip wiring harness at point (3) towards front.

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

Fig 1: Identifying Backrest Cover, Cable Ties, Valve Unit And Screw

Courtesy of BMW OF NORTH AMERICA, INC.

Cut through cable tie (1).

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

Fig 2: Pushing Jacket Of Drive Unit For Lumbar Support

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

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:

Fig 3: Identifying Heat Hose, Drive Unit For Lumbar Support And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

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