51 49 017 Removing and installing/replacing trim panel for rear window frame on (inside) left or right

Detach trim panel (1) from retainers (2) towards inside.

Installation: 

If necessary, replace faulty retainers (2).

Fig 1: Identifying Trim Panel And Retainers

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Lugs (1) on panel (2) must not be damaged.

Fig 2: Identifying Lugs And Panel

Courtesy of BMW OF NORTH AMERICA, INC.