67 31 501 Removing and installing/replacing forward/back seat adjustment drive unit (coupe)

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 328xi, 2012 BMW 328i, and 2011 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove FRONT SEAT

Unfasten plug connections (1) and disconnect.

Press out pins of expanding rivets (2) and lever out expanding rivets.

Carefully bend long flex shaft with jacket tube and pull out of gearing.

Pull drive with short flex shaft out of gearing.

Fig 1: Identifying Connectors And Expanding Rivets

G00524336

Courtesy of BMW OF NORTH AMERICA, INC.

Bend metal tab (1) open.

Installation note:

Slide seat rail with opening forwards or back until bushing for flex shaft mounting of worm gear is flush.

Insert flex shaft.

Fig 2: Sliding Seat Rail

G06895516

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Slide short flex shaft (1) into longitudinal seat adjustment gearing square.

Bend long flex shaft (2) upwards and slide into longitudinal seat adjustment gearing.

Make sure flex shafts are correctly seated in transmissions.

Fig 3: Identifying Short Flex Shaft And Long Flex Shaft

G06852183

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

PTFE hoses (1) are shrink-fitted onto end pieces.

Check that hoses are free from damage.

Fig 4: Identifying PTFE Hoses

G06895580

Courtesy of BMW OF NORTH AMERICA, INC.