54 13 065 Removing and installing/replacing rear floating roofliner for glass slide/tilt sunroof
WARNING: This page is about a different car, the 2010 BMW 535xi, 2009 BMW 535xi, and 2008 BMW 535xi. However, it is still accessible from the selected car via links, so may be relevant.
The rear floating headlining parts set also includes the mechanism. Replace mechanical parts with clear damage only.
This operation is described in: