52 13... Removing and installing/replacing all trims on left or right seat rails
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.
Operation is identical to:
Replacing ALL TRIMS ON LEFT OR RIGHT SEAT RAIL (comfort).