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

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary work

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 Slightly 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 Bushing And 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 In Receptacle

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 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).

INITIALISE drive unit for seat cushion tilt adjustment.

Fig 5: Identifying Seat Cushion Tilt Adjuster And Holder

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE:

Carry out FUNCTION CHECK WITH ADAPTER CABLE .