Necessary preliminary tasks

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Remove REAR PANEL ON FRONT SEAT BACKREST

Disconnect plug connection (1).

Remove drive unit for lumbar support (2) with jacket from backrest frame and expose.

Installation:

Make sure drive unit for lumbar support (2) is in correct installation position.

Fig 1: Turning Headlight Vertical Aim Adjuster

Courtesy of BMW OF NORTH AMERICA, INC.

Detach hose (1) from drive unit (2).

NOTE: Gently heat hose (1) if stuck.

Installation:

Hose (1) on drive unit (2) must not be kinked.

Pull jacket (3) off drive unit (2).

Remove drive unit for lumbar support (2).

Fig 2: Removing Drive Unit For Lumbar Support

Courtesy of BMW OF NORTH AMERICA, INC.