67 31 510 Removing and installing/replacing drive unit for seat tilt adjustment (model year 2009 through production date 07/2012)

Necessary preliminary work: 

• Remove driver's or passenger seat. See REMOVING DRIVER'S SEAT or REMOVING FRONT PASSENGER SEAT .

Release screws (1).

Tightening torque 52 10 6AZ .

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

Fig 1: Folding Back Seat Rail From Seat Frame

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

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 Bushing And Seat Rail

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

To do so, insert a suitable slotted screwdriver (3) in receptacle (4).

Press drive unit for seat cushion tilt adjustment (2) with a levering action downwards slightly and release screw (5).

Tightening torque 67 31 2AZ .

Fig 3: Disconnecting Drive Unit Plug Connection

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

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

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

Fig 4: Twisting Drive Unit For Seat Tilt Adjustment At Spindle

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Replacement: 

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

INITIALIZE  drive unit for seat cushion tilt adjustment.

Fig 5: Identifying Seat Unit Adjuster And Holder

Courtesy of BMW OF NORTH AMERICA, INC.