65 13 071 Removing and installing or replacing loudspeakers (rear shelf): Notes
WARNING: This page is about a different car, the 2003 BMW 530i, 2002 BMW 530i, and 2001 BMW 530i. However, it is still accessible from the selected car via links, so may be relevant.
Remove rear parcel shelf,
refer to 51 46 000 REMOVING AND INSTALLING/REPLACING TRIM FOR ODDMENTS TRAY (BACK SHELF)
Lift foam rubber at all four corners, unfasten screws and lift out loudspeaker. Pull off connectors.