System functions: Priming/disarming

The anti-theft alarm system is primed when the central locking is locked/deadlocked. Locking/deadlocking requires:

The driver's door to be opened and closed after terminal 15 is switched OFF.

The DWA control unit transmits the "Prime" message to the siren with integrated tilt alarm sensor (SINE) via the local data bus. The siren is then immediately primed. 3 seconds after being primed, the door and hatch contacts are monitored. The condition for this is that the contacts have idle status (doors and tailgate / rear window on E61 closed).

The DWA LED starts flashing and the hazard warning lights flash once as a visual confirmation. Depending on the national version, a short acoustic warning tone may also sound from the siren (see NATIONAL VERSION ).

After the DWA has been primed and all doors and hatches are closed (including the rear window on the E61):

The ultrasonic interior motion sensor starts to map out the interior by means of ultrasonic waves. The interior can be monitored after approx. 20 seconds.

The monitoring of the interior is interrupted if the side windows and/or the sliding/tilting sunroof are closed using the convenience closing function.

Like the interior monitoring, the tilt monitoring does not start until the doors and hatches are closed. When it is activated, the tilt alarm sensor first conducts a 30 second long calibration sequence. Tilt monitoring does not start until the calibration sequence has been completed.

If the luggage compartment is opened during the calibration sequence, the calibration sequence is interrupted. The calibration sequence is then restarted when the luggage compartment is closed again. The monitoring functions of the ultrasonic interior motion sensor and the tilt alarm sensor have priority. If a faulty door or hatch contact is detected, this will automatically be assumed to be closed.

The anti-theft alarm system is disarmed when the central-locking system is unlocked. The DWA LED stops flashing and the hazard warning lights flash twice as a visual confirmation. Depending on the national version, a short acoustic warning tone (dual tone) may also sound from the siren (see NATIONAL VERSION ).

The luggage compartment can also be unlocked and opened with the remote control without the alarm being triggered, even if the alarm system is activated. When the luggage compartment is opened, the interior monitoring and tilt monitoring are deactivated. The interior monitoring and tilt monitoring are reactivated as soon as the luggage compartment is closed again.