BMW 7 Series: Removing And Installing/Replacing Drive Unit For Seat Height Adjustment

Necessary preliminary tasks

• Remove driver's or 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 drive unit for seat height adjustment (3) and remove.

Fig. 33: Unfastening Seat Height Adjuster Mounting Screws

Installation: Fit drive unit for seat height adjustment (1) with plastic clip (2) only.

Make sure plastic clip (2) is correctly seated.

Fig. 34: Identifying Seat Height Adjustment Drive Unit With Plastic Clip

NOTE:

• Carry out FUNCTION CHECK WITH ADAPTER CABLE

Replacement

Initialize drive unit for seat height adjustment.

REMOVING AND INSTALLING/REPLACING DRIVE UNIT FOR SEAT HEIGHT ADJUSTMENT

Necessary preliminary tasks

• Remove driver's or 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 drive unit for seat height adjustment (3) and remove.

Fig. 35: Removing Seat Height Adjuster Drive Unit Mounting Screws

Installation

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

Make sure plastic clip (2) is correctly seated.

Fig. 36: Identifying Seat Height Adjuster Drive Unit With Plastic Clip

NOTE:

• Carry out FUNCTION CHECK WITH ADAPTER CABLE

Replacement

Initialize drive unit for seat height adjustment.

REMOVING AND INSTALLING/REPLACING DRIVE UNIT FOR SEAT TILT ADJUSTMENT

Necessary preliminary tasks

• Remove driver's or passenger seat.

NOTE: Front left trim 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 leads to tensile load.

Fig. 37: Folding Back Seat Rail Slightly From Seat Frame

WARNING: Risk of injury!

Do not move torsion bar.

Installation: Make sure plastic bushings (1) are correctly seated in seat rail (2).

Faulty plastic bushings (1) cause noises and must be replaced.

Fig. 38: Identifying Plastic Bushing And Seat Rail

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

NOTE: Relieve load on drive unit for seat tilt adjustment (2).

Tightening torque 67 31 2AZ.

Fig. 39: Inserting Screwdriver In Receptacle

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

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

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

Fig. 40: Twisting Drive Unit For Seat Tilt Adjustment At Spindle

Replacement

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

INITIALIZE drive unit for seat tilt adjustment.

Fig. 41: Identifying Seat Unit Adjuster And Holder

NOTE:

• Carry out FUNCTION CHECK WITH ADAPTER CABLE

REMOVING AND INSTALLING/REPLACING DRIVE UNIT FOR THIGH SUPPORT

This operation is described in:

REMOVING AND INSTALLING/REPLACING ADJUSTING UNIT FOR THIGH SUPPORT ON FRONT PASSENGER SEAT (Sports, Electric) or REMOVING AND INSTALLING/REPLACING ADJUSTING UNIT FOR THIGH SUPPORT ON FRONT PASSENGER SEAT (Comfort).

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