61 31 246 Removing And Installing/Replacing Button For Rear Lid (From 03/2005)
WARNING: This page is about a different car, the 2008 BMW Alpina and 2007 BMW Alpina. However, it is still accessible from the selected car via links, so may be relevant.
Operation is described in:
Removing and installing handle strip . See 51 13 401 REMOVING AND INSTALLING / REPLACING HANDLE STRIP (ON REAR LID) .