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 6 other vehicles, including the 2010 BMW 535xi, 2010 BMW 535i, 2009 BMW 535xi, 2009 BMW 535i, and 2008 BMW 535xi. 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 REMOVING AND INSTALLING/REPLACING UPPER REAR PANEL ON LEFT OR RIGHT FRONT SEAT BACKREST (COMFORT) and REMOVING AND INSTALLING/REPLACING LOWER REAR PANEL ON LEFT OR RIGHT FRONT SEAT BACKREST (COMFORT) .

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, Screw And Valve Unit

G04773168

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

G04769215

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 Plug Connection, Hose, Lumber Support And Jacket

G04769216

Courtesy of BMW OF NORTH AMERICA, INC.

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