Activating and deactivating

The anti-theft alarm system is armed when the locks are engaged and the deadlocking function activated using the central locking system. Conditions for lock engagement and central deadlocking are:

• The driver's door has been opened and reclosed since the power at Terminal 15 was switched off.
• The emergency power siren is then immediately activated.
• Three seconds after activation the door contacts and the contacts in the tailgate or the engine compartment lid are included in monitoring. It is required that the contacts are in rest state (doors and tailgate/engine compartment lid closed).
• The alarm system LED starts flashing to provide visual acknowledgement. The hazard warning flashers flashes once.
• Depending on the national-market version an acoustic signal from the emergency power siren can be emitted (see national-market version).
• After having activated the alarm system and once all doors and flaps have been closed the ultrasonic interior sensor starts monitoring the vehicle interior. After approx. 20 seconds, interior monitoring is possible.
• If the side windows and/or the slide/tilt sunroof are closed using convenience operation, the interior monitoring is interrupted.

In keeping with the interior monitoring, the tilt monitoring function also commences after the doors and lids/tailgate have been closed. After activating, the tilt alarm sensor first performs a reference run that takes 30 seconds. The tilt monitoring only begins after the reference run.

if the tailgate is opened during the reference run, the reference run is interrupted. After closing the tailgate, the reference run restarts. The monitoring functions performed by the ultrasonic interior sensor and the tilt sensor have priority. If a faulty door contact or contact in the engine compartment lid or the tailgate is detected, it is assumed that it is closed.

Unlocking central locking system deactivates the alarm system. As visual acknowledgement, the DWA LED is switched off and the hazard warning system flashes twice. Depending on the national-market version there may also be a supplementary brief signal (or two, depending on national version) from the emergency power siren. Even while the alarm system is armed, the remote control can be used to unlock and open the boot lid or tailgate without triggering the antitheft alarm system. When the tailgate is opened, the interior and tilt monitoring are disabled. The interior and tilt monitoring are reactivated as soon as the tailgate is closed again.