Opening the tone settings in the Options menu*

1. "CD/Multimedia" or "Radio"

2. If necessary, select additional entries, for example, "FM" or "CD/DVD".

3. Open "Options".

4. "Tone"

5. Set the desired tone.

    See also:

    Activating HDC
    Activating HDC Press the button; the LED above the button lights up. The LED flashes when the brakes are applied automatically. ...

    Front seat heating
    Switching on Press the button once for each temperature level. The maximum temperature is reached when three LEDs are lit. If the drive is continued within approx. 15 minutes, the seat h ...

    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 ...