BMW 3 Owners & Service Manuals

BMW 3: Indicator light on the interior mirror

Opening and closing

  • The indicator light flashes briefly every 2 seconds: The alarm system is switched on.
  • Indicator light flashes for approx. 10 seconds, then it flashes briefly every 2 seconds: Interior motion sensor and tilt alarm sensor are not active, as doors, hood, or trunk lid are not correctly closed. Correctly closed access points are secured.

    When the still open access points are closed, the interior motion sensor and tilt alarm sensor will be switched on.

  • The indicator light goes out after unlocking: The vehicle has not been tampered with.
  • The indicator light flashes after unlocking until drive-ready state is switched on, 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 when the vehicle is towed.

Interior motion sensor

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

Avoiding unintentional alarms

General information

The tilt alarm sensor and interior motion sensor can trigger an alarm, although no unauthorized action occurred.

Possible situations for an unwanted alarm:

  • In automatic vehicle washes.
  • In duplex garages.
  • During transport on trains carrying vehicles, at sea or on a trailer.
  • With animals in the vehicle.
  • When the vehicle is locked after start of fueling.

The tilt alarm sensor and the interior motion sensor can be switched off in such situations.

Switching off the tilt alarm sensor and interior motion sensor

Press the button on the vehicle key within 10 seconds as soon as the vehicle is locked.

The indicator light lights up for approx. 2 seconds and then continues to flash.

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

Switching off the alarm

  • Unlock the vehicle with the vehicle key.
  • Unlock the vehicle with the integrated key and activate the drive-ready state via emergency detection of the vehicle key.
  • With Comfort Access: when carrying the vehicle key, grasp the driver's door or front passenger door handle completely.


     Power windows

    Safety information Warning When operating the windows, body parts and objects can be jammed. There is a risk of injury or risk of damage to property. Make sure that the area of movement of the window

     Glass sunroof

    General information The glass sunroof and the sun protection are operated using the same switch. Safety information Warning Body parts can be jammed when operating the glass sunroof. There is a risk

     Seats, mirrors, and steering wheel


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