Swapping the telephone and additional telephone

The function of the telephone and additional telephone can be swapped automatically.

1. "Telephone"

2. "Bluetooth® (phone)"

3. "Swap phone/addit. phone"

    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 ...

    The Appendage Factor
    M cars have had what I call a high appendage factor — the feeling that the car is an extension of the driver. It's typically experienced in cars whose various systems and characteristics are well- ...

    Bluetooth audio
    At a glance ► Music files on external devices such as audio devices or mobile phones can be played back via Bluetooth. Use of a mobile phone as an audio source, refer to page 205. ► ...