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Necessary preliminary work:

Remove front wheel arch cover (front section)

Removing and installing, replacing a front ultrasonic sensor (outer) (Park Distance Control) BMW 3 E90

Disconnect plug connection.

Unlock retaining tabs (1) in direction of arrow and pull ultrasound transducer (2) upward out of bracket (3).

Removing and installing, replacing a front ultrasonic sensor (outer) (Park Distance Control) BMW 3 E90

Installation note:

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

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

Removing and installing, replacing a front ultrasonic sensor (outer) (Park Distance Control) BMW 3 E90

Installation note:

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