Malfunction

Comfort Access may not function properly if it experiences interference from external sources such as mobile phones, metal objects, overhead power lines, transmission towers, etc.

In this case, open or close the vehicle using the buttons on the remote control or use the integrated key in the door lock.

    See also:

    Adaptive brake assistant
    In combination with the Active Cruise Control, this system ensures that the brakes respond even more rapidly when braking in critical situations. Refer also to Collision warning. ...

    Safety
    Both the coupe and convertible have front airbags plus side-impact airbags built into the front seats. As required of all 2012 models sold in the U.S., the 640i has standard antilock brakes and an ...

    Locking and unlocking
    Pressing the buttons locks and unlocks the doors and the trunk lid when the front doors are closed, but they are not secured against theft. The fuel filler flap remains unlocked. ...