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 52 13 198 REMOVING AND INSTALLING / REPLACING REAR PANEL ON LEFT OR RIGHT FRONT SEAT BACKREST (NORMAL/MANUAL)

E53 comfort seat:

Remove rear panel at bottom. See 52 15 198 REMOVING AND INSTALLING/REPLACING REAR PANEL ON FRONT LEFT OR RIGHT SEAT BACKREST (SPORTS/MANUAL)

Detach backrest cover (1) in direction of arrow from backrest frame (2).

Fig 1: Detaching Backrest Cover From Backrest Frame

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Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

Detach transparent hose (2) from valve housing (3).

NOTE: If necessary, gently heat transparent hose (2) if firmly seated.

If necessary, detach fabric adhesive tape (4).

Detach drive unit for lumbar support (5) with jacket in direction of arrow.

Fig 2: Detaching Transparent Hose From Valve Housing

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Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Clean adhesive area (1) on backrest frame (2).

Fig 3: Identifying Cleaning Adhesive Area On Backrest Frame

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Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Transparent hose (1) of drive unit for lumbar support must not be kinked.

Pull off protective film (3) from jacket (2). Stick drive unit for lumbar support to backrest frame.

If necessary, secure jacket (2) with cable strap.

Fig 4: Pulling off protective film from jacket

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Courtesy of BMW OF NORTH AMERICA, INC.