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 50 other vehicles, including the 2016 BMW M5, 2016 BMW ActiveHybrid 5, 2016 BMW 550i xDrive, 2016 BMW 550i, and 2016 BMW 535i 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 . See 52 14 001 REMOVING AND INSTALLING FRONT SEAT, DRIVER'S SIDE or 52 14 002 REMOVING AND INSTALLING FRONT SEAT, FRONT PASSENGER SIDE

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: Installing Plastic Bushings In Seat Rail

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 .

Fig 3: Inserting Screwdriver And Relieving Load On Drive Unit

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 Out Drive Unit For Seat Cushion Tilt Adjustment At Spindle

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 Dimension And Holder On Drive Unit For Seat Cushion Tilt Adjustment

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, Plug Connection And Fasteners

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

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE:

Carry out FUNCTION CHECK WITH ADAPTER CABLE