51 46 013 Removing and installing/replacing rear window roller blind
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 described in:
Removing and installing/replacing TRIM FOR ODDMENTS TRAY (BACK SHELF) .