Priming/deactivating ATA (Anti-theft Alarm system)
If the alarm system is primed, a visual and audible alarm is triggered in the following situations:
a door is opened
the bonnet is opened
The alarm is not deactivated, even if you immediately close the open door that has triggered it, for example.
Priming
Close all the doors.
Lock the vehicle with the key.
Indicator lamp 
in the overhead control panel flashes.
Switching off
Unlock the vehicle with the key.
Indicator lamp in the overhead control panel goes out.
The vehicle locks again automatically if you do not open a door within 40 seconds after unlocking the vehicle.
Stopping the alarm
Press the 
or 
button on the key.
or button on the key. or
Press the Start/Stop button with the key inside the vehicle.
The alarm stops.