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

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2017 BMW 550i GT xDrive, 2017 BMW 535i GT xDrive, 2017 BMW 535i GT, 2016 BMW 550i GT xDrive, and 2016 BMW 535i GT xDrive. However, it is still accessible from the selected car via links, so may be relevant.

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 Plastic Bushings In Seat Rail

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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 .

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

Courtesy of BMW OF NORTH AMERICA, INC.

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 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: Measuring Seat Cushion Tilt Adjustment Drive Unit Dimension

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE:

Carry out FUNCTION CHECK WITH ADAPTER CABLE

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 Screw And Nuts

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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 Seat Cushion Tilt Adjustment Drive Unit Dimension

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE:

Carry out FUNCTION CHECK WITH ADAPTER CABLE