UK Security System Module: Operation: Coupe: Roadster
WARNING: This page is about a different car, the 2006 Chrysler Crossfire. However, it is still accessible from the selected car via links, so may be relevant.
The Roadster, because the soft top can move with gusts of wind or external vibrations, the ultrasonic solution is not practical. This vehicle uses a microwave sensor located in the console below the cupholder. This sensor will provide full coverage of the passenger compartment. Similar to the Coupe, a means is provided to disable the intrusion sensing portion of the alarm in the event that the vehicle remains occupied or is locked with the top down.