67 31 510 Removing and installing/replacing drive unit for seat tilt adjustment

WARNING: This page is about a different car, the 2009 BMW 528xi, 2009 BMW 528i, 2008 BMW 528xi, and 2008 BMW 528i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove front seat . See SEATS - REPAIR INSTRUCTIONS -- 528I, 528XI .

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

Release screws (1).

Tightening torque 52 10 6AZ . See SEATS - TIGHTENING TORQUES .

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

IMPORTANT: Risk of damage!
Avoid subjecting electric leads to tensile load.

Fig 1: Folding Back Seat Rail From Seat Frame

Courtesy of BMW OF NORTH AMERICA, INC.

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

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 In 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).

Tightening torque 67 31 2AZ . See ELECTRICAL DRIVES - TIGHTENING TORQUES .

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

Courtesy of BMW OF NORTH AMERICA, INC.

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

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

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement:

Measure dimension (A) and adjust by turning holder (1) on new drive unit for seat tilt adjustment (2).

Initialize drive unit for seat tilt adjustment.

Fig 5: Identifying Dimension By Turning Holder

Courtesy of BMW OF NORTH AMERICA, INC.