66 20 518 Removing and installing/replacing a front (side) ultrasonic sensor

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2017 BMW X3, 2016 BMW X3, 2015 BMW X3, 2014 BMW X3, and 2013 BMW X3. However, it is still accessible from the selected car via links, so may be relevant.

Release screws at marked points.

Remove nut (1) from wheel arch trim panel (2).

Fig 1: Locating Wheel Arch Trim Panel Nuts And Screws

G09950167

Courtesy of BMW OF NORTH AMERICA, INC.

Partially feed out wheel arch panel (1) downwards as illustrated.

Fig 2: Identifying Wheel Arch Panel

G09950168

Courtesy of BMW OF NORTH AMERICA, INC.

Unclip trim grille (1) at the marked points and detach.

Unclip ultrasonic converter (2).

Remove plug connection at ultrasonic converter (2) and disconnect.

Installation note:

Before installation of ultrasonic sensor (2) on wiring harness, clean plug connection!

Retaining tabs on ultrasonic converter (2) must not be damaged!

Make sure ultrasonic transducer (2) is securely seated.

Fig 3: Identifying Ultrasonic Sensor Assembly

G09950169

Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

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

Fig 4: Identifying Rubber Ring And Ultrasonic Sensor

G04728003

Courtesy of BMW OF NORTH AMERICA, INC.