Environmental conditions

  • Say the commands, numbers, and letters smoothly and with normal volume, emphasis, and speed.
  • Always say commands in the language of the system. The language for the mobile phone voice operation is preset and cannot be changed in the Control Display.
  • Keep the doors, windows, and glass sunroof* closed to prevent noise interference.
  • Avoid making other noise in the vehicle while speaking.
    See also:

    Under the Hood
    The 640i is powered by a 315-horsepower, turbocharged 3.0-liter six-cylinder engine. Its peak torque rating is 332 pounds-feet. BMW cites a zero to 60 mph time of 5.5 seconds for both the coupe an ...

    Interior lamps
    General information The interior lamps, footwell lamps, entry lamps and courtesy lamps are controlled automatically. The brightness of some of these lamps is influenced by the thumbwheel for the ...

    Tire damage
    General information Inspect your tires often for damage, foreign objects lodged in the tread, and tread wear. Notes Driving over rough or damaged road surfaces, as well as debris, curbs and oth ...