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 2010 BMW 550i, 2009 BMW 550i, and 2008 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. See REAR PANELS (NORMAL / ELECTRIC SEAT) or REAR PANELS (COMFORT 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, Wiring Harness And Valve Unit

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).

Fig 3: Identifying Heat Hose, Plug And Lumbar Support

Courtesy of BMW OF NORTH AMERICA, INC.

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).