67 31 500 Removing and installing/replacing drive unit for longitudinal seat adjustment

WARNING: This page is about a different car, the 2010 BMW 550i, 2009 BMW 550i, and 2008 BMW 550i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove TRIMS FOR TOP RAIL .

Disconnect plug connection (1).

Release expander rivets (2).

Installation:

If necessary, replace faulty expander rivets (2).

Fig 1: Identifying Rivets And Plug

Courtesy of BMW OF NORTH AMERICA, INC.

NOTE: View from rear.

IMPORTANT: Risk of damage!
Do not kink drive shafts (4).

Lever out guide clip (3).

Raise flange (1) with drive unit for longitudinal seat adjustment (2) slightly and detach from left drive shaft.

Feed out drive unit for longitudinal seat adjustment (2) in direction of arrow and detach from right drive shaft.

Fig 2: Raising Flange With Drive Unit

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Make sure guide clips (3) and both drive shafts (4) are correctly seated.

Replacement:

INITIALIZE drive unit for longitudinal seat adjustment.