Remove trim

Carefully detach trim (1) from rear bumper with special tool 00 9 317  and hot air blower.

Fig 1: Removing Trim From Rear Bumper

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Pull protective film (1) off trim (2).

Fit trim (2) over guides (3) into associated mountings on bumper and stick on.

Fig 2: Identifying Protective Film & Trim

Courtesy of BMW OF NORTH AMERICA, INC.