System Overview

Fig 1: System Overview Schematic

Courtesy of BMW OF NORTH AMERICA, INC.

The DWA control unit with integrated interior sensor (1) is located in the rear lights roof console housing in the center of the headliner. This central location allows the entire vehicle interior to be monitored very effectively.

The emergency siren with integrated tilt sensor (2) is installed in the left rear wheel arch where good protection is provided against tampering with the emergency siren or DWA K-Bus.

Fig 2: Identifying Interior Sensor (1) And Tilt Sensor (2)

Courtesy of BMW OF NORTH AMERICA, INC.