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Removing the Ultrasound Alarm Sensor

Model: BMW Serie 5 E39 - Years 1995-2003
Part: Accessory kit

The alarm system in BMW vehicles integrates an ultrasound sensor for cabin protection and acts as a true motion sensor: it emits ultrasound waves, and if something moving in the cabin interferes with the waves, it activates the alarm system. This sensor is located on the headliner and can be easily recognized as it is a component attached to the headliner itself; pry on the sides to release the pressure clips, disconnect the connector, and then detach the sensor, paying attention to the orientation: use the label as a reference.

Updated on 15 February 2026 by ScegliAuto

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