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

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Necessary preliminary tasks:

Remove DRIVER'S OR FRONT PASSENGER SEAT

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

Release screws (1).

Tightening torque 52 10 6AZ .

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

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

Fig 1: Folding Back Seat Rail From Seat Frame

Courtesy of BMW OF NORTH AMERICA, INC.

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

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 Seat Rail And Plastic Bushings

Courtesy of BMW OF NORTH AMERICA, INC.

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

NOTE: Relieve load 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 .

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

Courtesy of BMW OF NORTH AMERICA, INC.

Fig 4: Twisting Out Drive Unit For Seat Cushion 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 cushion tilt adjustment (2).

INITIALIZE drive unit for seat cushion tilt adjustment.

Fig 5: Identifying Seat Cushion Tilt Adjustment Dimension

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE:

Carry out FUNCTION CHECK WITH ADAPTER CABLE