67 31 540 Removing and installing/replacing drive unit for head restraint adjustment (comfort seat)

Remove rear panel at top and bottom from front seat backrest. Refer to 52 17 202 REMOVING AND INSTALLING/REPLACING BOTTOM REAR PANEL ON FRONT SEAT BACKREST (LUXURY SEAT) .

Turn plug connection (1) in direction of arrow and disconnect from backrest frame (2).

Fig 1: Disconnecting Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1).

Detach shaft (1) in direction of arrow from drive unit for head restraint adjustment (3).

Fig 2: Removing Drive Unit For Head Restraint Adjustment

Courtesy of BMW OF NORTH AMERICA, INC.

Remove retaining rings (2).

Remove drive unit for head restraint adjustment (3) in direction of arrow from backrest frame (4).

Installation: 

Make sure shaft (1) is correctly located in metal fold of backrest frame (4).

Removal and installation only:

Do not turn spindle (1) in order not to change measurement A.

Replacement only:

Adopt measurement A of removed drive unit for head restraint adjustment (2); if necessary, adjust by turning spindle (1).

Fig 3: Identifying Measurement A Of Removed Drive

Courtesy of BMW OF NORTH AMERICA, INC.