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

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Necessary preliminary tasks:

Remove rear panel on front seat backrest. See REMOVING REAR PANEL (NORMAL/ELECTRIC SEAT) or REMOVING BOTH REAR PANELS (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 In Upward Direction

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.