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

Necessary preliminary tasks: 

• Remove driver's or front passenger seat  . See 52 14 001 REMOVING AND INSTALLING FRONT SEAT, DRIVER'S SIDE  or 52 14 002 REMOVING AND INSTALLING FRONT SEAT, FRONT PASSENGER SIDE 

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

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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: Installing Plastic Bushings In 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: Inserting Screwdriver And Relieving Load On Drive Unit

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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 Out Drive Unit For Seat Cushion 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: Measuring Dimension And Holder On Drive Unit For Seat Cushion Tilt Adjustment

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Necessary preliminary tasks: 

• Move seat to maximum height

Unscrew nuts (1).

Release screw (2).

Unfasten plug connection (3) and disconnect.

Remove electric motor (4).

Fig 1: Identifying Electric Motor, Plug Connection And Fasteners

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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 2: Measuring Dimension And Holder On Drive Unit For Seat Cushion Tilt Adjustment

Courtesy of BMW OF NORTH AMERICA, INC.