Problems with your vehicle
If you should experience a problem with your
vehicle, particularly one that you believe may
affect its safe operation, we urge you to
contact an authorized Mercedes-Benz Center
immediately to have ...
ATA (anti-theft alarm system)
■ To arm: lock the vehicle with the SmartKey
or KEYLESS-GO.
Indicator lamp 1 flashes. The alarm
system is armed after approximately
15 seconds.
■ To switch off using the SmartKey:
...
Locking the vehicle
If the vehicle can no longer be centrally
locked with the SmartKey, use the
mechanical key.
► Close the front-passenger door, the rear
doors and the tailgate.
► Press the locking bu ...