BMW 3 Owners & Service Manuals

BMW 3: General information

When the vehicle is locked, the vehicle alarm system reacts to the following changes:

  • Opening a door, the hood or the trunk lid.
  • Movements in the car's interior.
  • Changes in the vehicle tilt, for instance, during attempts at stealing a wheel or when towing the vehicle.
  • Disconnected battery voltage.
  • Improper use of the socket for OBD Onboard Diagnosis.

The alarm system signals these changes visually and acoustically:

  • Acoustic alarm:
    Depending on local regulations, the acoustic alarm may be suppressed.
  • Visual alarm:
    By flashing the exterior lighting.

Switching on/off

When you unlock and lock the vehicle, either with the vehicle key or via Comfort Access, the alarm system is switched off and on at the same time.

Opening the doors with the alarm system switched on

The alarm system is triggered when a door is opened if the door was unlocked using the integrated key in the door lock.

Opening the trunk lid with the alarm system switched on

The trunk lid can be opened even when the alarm system is switched on.

After the trunk lid is closed, it is locked and monitored again provided the doors are locked. The hazard warning system flashes once.

Panic mode

You can trigger the alarm system if you find yourself in a dangerous situation.

  • Press the button on the vehicle key and hold for at least 3 seconds.
  • Briefly press the button on the vehicle key three times in succession.

To switch off the alarm: press any button.

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