Alarm (2006-2013): Function: Deactivation
The alarm is deactivated if the vehicle is unlocked using the remote control or using the keyless system. When the central electronic module (CEM) receives an unlock command, it deactivates the alarm and releases the central locking. On vehicles with the keyless entry system, the unlock command is transmitted from the keyless vehicle module (KVM) to the central electronic module (CEM).
This means that if the vehicle is locked and alarmed but then unlocked using the key blade instead of the remote control the alarm will be triggered if a door is opened.
The alarm functions can also be deactivated locally if the button for unlocking the tailgate/trunk lid is pressed on the remote control. In that case the central electronic module (CEM) takes no account of signals from the door open sensor in the tailgate/trunk lid lock unit. The vehicle tilt sensor and mass movement sensor module (MMS) alternatively ultrasonic sensor module (IMS) will also be deactivated temporarily. To regain full protection for the vehicle the locking button on the remote control must be pressed.
Full protection can also be regained by activating the relock function. This automatically locks the vehicle and alarms it after approximately 2 minutes. However, it is still possible to open the tailgate/trunk lid during those two minutes.