Door Open Sensor
The door open sensor is a switch mounted in the lock units of the side doors and the tailgate/trunk lid. On vehicles with an alarm there is a single switch on the hood. The switches are closed when the door or tailgate/trunk lid is shut.
When the alarm is activated, the central electronic module (CEM) checks every 3 times / second that the switches are closed. If the central electronic module (CEM) detects that a switch is open the alarm is triggered.
If the central electronic module (CEM) detects that a switch is not closed when the central locking and alarm activation command is received, the vehicle tilt sensor and mass movement sensor module (MMS) alternatively ultrasonic sensor module (IMS) will not be activated. Similarly, no attention will be paid to signals from a door open sensor not closed on activation.