51 47 220 Removing and installing/replacing trunk trim panel on right side panel
WARNING: This page is about a different car, the 2003 BMW Z8. However, it is still accessible from the selected car via links, so may be relevant.
Remove panel for trunk separating wall.
Lever out trunk light (1) and detach plug connection.
Pull out emergency release mechanism for tank cap a little.
Unclip cable (2) from clip (3).
Remove trunk trim panel (4).
Courtesy of BMW OF NORTH AMERICA, INC.