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

Left Side: 

Press release button (1).

Open flap (2) and remove.

Fig 1: Removing Luggage Compartment Trim Flap (Left Side)

Courtesy of BMW OF NORTH AMERICA, INC.

Right Side: 

Press release button (1).

Open flap (2) and remove.

Fig 2: Removing Luggage Compartment Trim Flap (Right Side)

Courtesy of BMW OF NORTH AMERICA, INC.