67 31 530 Removing And Installing/Replacing Drive Unit For Backrest Angle Adjustment

WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove front seat . 52 14 000 REMOVING AND INSTALLING LEFT OR RIGHT FRONT SEAT (NORMAL/ELECTRIC) or 52 17 000 REMOVING AND INSTALLING LEFT OR RIGHT FRONT SEAT (COMFORT) .
Remove rear panel on front seat backrest . See 52 14 198 REMOVING AND INSTALLING / REPLACING REAR PANEL ON LEFT OR RIGHT FRONT SEAT BACKREST (NORMAL / ELECTRIC) or 52 17 205 REMOVING AND INSTALLING/REPLACING BOTH REAR PANELS ON LEFT OR RIGHT FRONT SEAT BACKREST (COMFORT) .
Remove covers on front seat . See 52 14 040 REMOVING AND INSTALLING/REPLACING OUTER COVER ON FRONT LEFT OR RIGHT SEAT (NORMAL/ELECTRIC) or 52 14 041 REMOVING AND INSTALLING INNER COVER ON LEFT OR RIGHT FRONT SEAT (NORMAL/ELECTRIC) .

Unhook backrest cover (1) on left and right on backrest frame (2).

Fig 1: Unhooking Backrest Cover On Left And Right On Backrest Frame

Courtesy of BMW OF NORTH AMERICA, INC.

Remove metal retaining ring (1) in direction of arrow from drive rod (2).

Installation:

Always replace metal retaining ring (1).

Make sure metal retaining ring (1) is correctly seated.

Release screw (3).

Disconnect plug connection (4).

Fig 2: Removing Metal Retaining Ring From Drive Rod

Courtesy of BMW OF NORTH AMERICA, INC.

Pull out drive rod (1) until drive unit for backrest angle adjustment (2) is free.

Installation:

Make sure drive rod (1) is correctly seated in drive unit for backrest angle adjustment (2).

Feed drive unit for backrest angle adjustment (2) out of backrest frame (3) and remove.

Fig 3: Pulling Out Drive Rod

Courtesy of BMW OF NORTH AMERICA, INC.

Comfort seat only:

Replacement:

Initialize drive unit for backrest angle adjustment. See 67 31 ... NOTES ON INITIALIZING ELECTRIC SEAT SERVODRIVES .