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

WARNING: Risk of burning!
Work on the exhaust system may only be carried out when it has cooled down!

NOTE: Ultrasonic transducers (3) can be reached from below with bumper installed.
Unlock plug connection (1) and disconnect.
Unlock latch mechanisms (2) and pull ultrasonic transducer (3) out of bracket.

Fig 1: Identifying Ultrasonic Transducers, Plug Connection And Latch Mechanisms

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Before installation of ultrasonic sensor (3) on wiring harness, clean plug connection!

Retaining tabs (2) must not be damaged!

Make sure ultrasonic sensor is securely seated.

Installation note:

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

Fig 2: Identifying Rubber Ring On Ultrasonic Sensor

Courtesy of BMW OF NORTH AMERICA, INC.