67 31 530 Removing and installing/replacing drive unit for backrest angle adjustment

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Necessary preliminary tasks:

Remove front seat. Refer to 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. Refer to 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. Refer to 52 14 040 REMOVING AND INSTALLING/REPLACING OUTER COVER ON FRONT LEFT OR RIGHT SEAT (NORMAL/ELECTRIC) and 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

Courtesy of BMW OF NORTH AMERICA, INC.

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

Fig 2: Removing Metal Retaining Ring

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Always replace metal retaining ring (1).

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

Release screw (3).

Disconnect plug connection (4).

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

Fig 3: Removing Drive Unit

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Comfort seat only:

Replacement:

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