67 31 520 Removing and installing/replacing seat height adjustment drive unit

Necessary preliminary work: 

• Remove DRIVER'S or FRONT PASSENGER seat.

Set down front seat sideways on a suitable surface.

Disconnect plug connection (1).

Unfasten screws (2).

Tightening torque 67 31 1AZ .

Feed out seat height adjustment drive unit (3) and remove.

Fig 1: Removing Seat Height Adjustment Drive Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

Fit seat height adjustment drive unit (1) with plastic clamp (2) only.

Make sure plastic clamp (2) is correctly seated.

Fig 2: Identifying Seat Height Adjustment Drive Unit And Plastic Clamp

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement 

INITIALIZE  seat height adjustment drive unit.

Necessary preliminary tasks: 

• Remove DRIVER'S or FRONT PASSENGER seat.

Release screws (1).

Fig 1: Identifying Driver/Front Passenger Seat Screws

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Unfasten plug connection (2) and disconnect.

Remove seat height adjustment drive unit (3).

Fig 2: Identifying Seat Height Adjustment Drive Unit And Screw

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 3: Measuring Seat Cushion Tilt Adjustment Drive Unit Dimension

Courtesy of BMW OF NORTH AMERICA, INC.

Replacement 

INITIALIZE  seat height adjustment drive unit.