Removing the ultrasonic sensor for the front Parking Maneuvering Assistant (PMA)

NOTE: Description is for left component only. Procedure on the right side is identical.

NOTE: To provide a better overview: Schematic diagram with partially hidden components.

Release all bolts (arrows).
Fold the wheel arch trim panel (1) to one side.

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Unlock the latch mechanisms (1).
Unlock plug connection (2) and disconnect.
Remove the ultrasonic sensor (3).

Courtesy of BMW OF NORTH AMERICA, INC.