66 20 536 Removing and installing/replacing rear middle left ultrasonic transducer

Necessary preliminary tasks: 

• Remove rear bumper  , see 51 12 156 REMOVING AND INSTALLING REAR BUMPER TRIM .

Disconnect plug connection (1) and unclip ultrasonic transducer from retaining tabs (2).

Installation: 

Retaining tabs (2) must not be damaged!

Make sure ultrasonic transducer is securely seated.

Fig 1: Identifying Plug Connection And Retaining Tabs (Rear Middle Left Ultrasonic Transducer)

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Make sure rubber ring (1) is correctly seated on ultrasonic transducer (2).

Fig 2: Identifying Rubber Ring On Ultrasonic Transducer

Courtesy of BMW OF NORTH AMERICA, INC.