66 20 540 Removing and installing/replacing a rear (left/right) ultrasonic transducer (Park Distance Control)

WARNING: This page does not describe the selected car, but rather 21 other vehicles, including the 2013 BMW 328xi, 2013 BMW 328i, 2012 BMW 328xi, 2012 BMW 328i, and 2011 BMW 328xi. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary tasks:

N52:
- Remove Bottom Middle Cover
N54:
- Remove Rear Bumper Trim

NOTE: On cars with N52 engines, the outer ultrasonic transducers are accessible from below without having to remove the bumper trim.

Unlock retaining tabs (1) in direction of arrow and pull ultrasonic transducer (2) out of holder (3).

Fig 1: Identifying Retaining Tabs, Ultrasonic Transducer And Holder

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Retaining hooks (1) of ultrasonic transducer (2) must engage exactly in mountings (3).

Fig 2: Identifying Retaining Hooks, Ultrasonic Transducer And Mountings

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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

Fig 3: Identifying Rubber Ring And Ultrasonic Transducer

Courtesy of BMW OF NORTH AMERICA, INC.