Arming and disarming the alarm system

General information

When you lock or unlock the vehicle, either with the remote control or at the door lock*, the alarm system is armed or disarmed at the same time.

Door lock and armed alarm system

Unlocking via the door lock will trigger the alarm on some country-specific versions.

Trunk lid and armed alarm system

The trunk lid can be opened using the remote control, even if the alarm system is armed.

control Press the button on the remote control for approx. 1 second and release.

After the trunk lid is closed, it is locked and monitored again by the alarm system. The hazard warning system flashes once.

In some vehicle equipment variants, the trunk lid can only be opened using the remote control if the vehicle was unlocked first.

Panic mode

control Press the button on the remote control for at least 3 seconds.

Switching off the alarm

  • Unlock the vehicle using the remote control.
  • With Comfort Access: If you are carrying the remote control with you, pull on the door handle.

Indicator lamp on the interior rearview mirror

  • The indicator lamp flashes briefly every 2 seconds:
    The system is armed.
  • The indicator lamp flashes after locking:
    The doors, hood or trunk lid is not closed properly, but the rest of the vehicle is secured.
    After 10 seconds, the indicator lamp flashes continuously. The interior motion sensor is not active.
  • The indicator lamp goes out after unlocking: The vehicle has not been tampered with.
  • The indicator lamp flashes after unlocking until the engine is started, but no longer than approx. 5 minutes:
    An alarm has been triggered.

Tilt alarm sensor

The tilt of the vehicle is monitored.

The alarm system responds in situations such as attempts to steal a wheel or tow the car.

Interior motion sensor

The windows and glass sunroof* must be closed for the system to function properly.

Avoiding unintentional alarms

The tilt alarm sensor and interior motion sensor can be switched off together, such as in the following situations:

  • In automatic car washes
  • In duplex garages.
  • During transport on car-carrying trains, at sea or on a trailer.
  • When animals are to remain in the vehicle.

Switching off the tilt alarm sensor and interior motion sensor

control Press the button on the remote control twice in succession.

The indicator lamp lights up for approx. 2 seconds and then flashes continuously.

The tilt alarm sensor and interior motion sensor are switched off until the vehicle is locked again.

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