67 66 010 Removing and installing/replacing lumbar support drive mechanism on front seat, left or right

WARNING: This page does not describe the selected car, but rather 18 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750Li xDrive, and 2015 BMW 740Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove rear panel on front seat backrest. See REMOVING REAR PANEL ON SEAT BACKREST (NORMAL/ELECTRIC SEAT) or REMOVING REAR PANEL ON SEAT BACKREST (COMFORT SEAT) .

Unfasten plug connection (1) and disconnect.

Release clips (2).

Feed out drive unit for lumbar support in upward direction.

Installation:

Replace faulty clips (2).

Fig 1: Removing Lumbar Support Drive Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Release cable tie (1) from jacket (2).

Feed out drive unit for lumbar support out of jacket (2).

Detach hose (3).

NOTE: Gently heat hose (3) if stuck.

Installation:

Make sure hose (3) is laid without kinks.

Fig 2: Identifying Lumbar Support Drive Unit Cable Tie, Jacket And Heat Hoses

Courtesy of BMW OF NORTH AMERICA, INC.