51 12 157 Replacing rear bumper trim

Necessary preliminary tasks: 

• Remove Rear Bumper Trim 

Version with M Technic aerodynamic kit: 

• Remove Trim From Bumper 
• Remove Bottom Middle Trim 

Remove cover cap (1) for tow lug.

Version with PDC: 

Remove all Ultrasonic Transducers (2).

Fig 1: Identifying Cover Cap And Ultrasonic Transducers

Courtesy of BMW OF NORTH AMERICA, INC.