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Ultrasonic interior movement detector

The ultrasonic interior movement detector captures and evaluates movements in the vehicle interior. Initialization of the ultrasonic interior movement detector is started 6 seconds after the hood, trunk lid and the last door have been closed.

The ultrasonic interior movement detector is operational 30 seconds after the start of initialization and is included in the vehicle monitoring system. The ultrasonic interior movement detector has been integrated into the roof function center. The FZD is connected to the K-CAN2 and DWA bus.

Fig 1: Identifying Ultrasonic Interior Movement Detector Components
G06925109Courtesy of BMW OF NORTH AMERICA, INC.
COMPONENTS DESCRIPTION CHART

Index Explanation
1 Front of roof function center
2 Sensor ultrasound emission grille
3 Funnels for the ultrasonic sensors
4 Roof function center connector
5 Rear of roof function center
NOTE: For the ultrasonic interior movement detector to function properly, it is very important that the grille (2) is fitted correctly. The funnels must be touching the grille to prevent/reduce interference between the ultrasonic sensors. The grille must be engaged at the sides and fully located in position in the center.