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

WARNING: This page is about a different car, the 2009 BMW 528xi, 2009 BMW 528i, 2008 BMW 528xi, and 2008 BMW 528i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

Remove trims for top rail . See 52 13... REMOVING AND INSTALLING/REPLACING ALL TRIMS ON LEFT OR RIGHT SEAT RAILS .

Disconnect plug connection (1).

Release expander rivets (2).

Installation:

If necessary, replace faulty expander rivets (2).

Fig 1: Identifying Plug Connection And Expander Rivets

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).

Fig 2: Lever Out Guide Clip (3)

Courtesy of BMW OF NORTH AMERICA, INC.

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.

Installation:

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

Replacement:

Initialize drive unit for longitudinal seat adjustment.