51 47 172 Removing and installing/replacing flap in luggage compartment trim, left or right

Open flap (2) at handle (1) and remove.

Fig 1: Opening Flap At Handle

Courtesy of BMW OF NORTH AMERICA, INC.

E70 Security Plus (SA109) only: 

Release battery (1) for magnetic flashing beacon and remove in upward direction.

Feed plug connection (2) out of holder.

Fig 2: Identifying Battery And Plug Connection

Courtesy of BMW OF NORTH AMERICA, INC.