67 31 510 Removing and Installing/Replacing Drive Unit For Seat Tilt Adjustment

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2008 BMW 750i, 2008 BMW 750Li, 2007 BMW 750i, 2007 BMW 750Li, and 2006 BMW 750i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove front seat. . See 52 14 000 REMOVING AND INSTALLING LEFT OR RIGHT FRONT SEAT (NORMAL/ELECTRIC) and 52 17 000 REMOVING AND INSTALLING LEFT OR RIGHT FRONT SEAT (COMFORT) .

NOTE: Front left trim shown removed for purposes of clarity.

Release screws (1).

Fold back seat rail (2) slightly from seat frame (3) in direction of arrow.

NOTE: Avoid subjecting electric leads to tensile load.

Fig 1: Folding Back Seat Rail Slightly From Seat Frame

Courtesy of BMW OF NORTH AMERICA, INC.

WARNING: Do not move torsion bar. Danger of injury!

Installation:

Make sure plastic bushings (1) are correctly seated in seat rail (2). Faulty plastic bushings (1) cause noises and must be replaced.

Fig 2: Identifying Plastic Bushings & Seat Rail

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1) on drive unit for seat tilt adjustment (2).

NOTE: Relieve load on drive unit for seat tilt adjustment (2).

To do so, insert a suitable slotted screwdriver (3) into receptacle (4), press drive unit for seat tilt adjustment (2) downwards slightly using a lever action and release screw (5).

Then slowly move screwdriver (3) upwards and relieve load on drive unit for seat tilt adjustment (2) completely.

Fig 3: Disconnecting Plug Connection On Drive Unit For Seat Tilt Adjustment

Courtesy of BMW OF NORTH AMERICA, INC.

Tilt drive unit for seat tilt adjustment (1) upwards and feed out from receptacle (2).

If necessary, twist out drive unit for seat tilt adjustment (1) at spindle (3) to such an extent that it can be removed.

Fig 4: Removing Drive Unit For Seat Tilt Adjustment From Receptacle

Courtesy of BMW OF NORTH AMERICA, INC.

Comfort seat only:

Replacement:

Initialize drive unit for seat tilt adjustment. See 67 31 ... NOTES ON INITIALIZING ELECTRIC SEAT SERVODRIVES