Volume

▷ "Speed volume": speed-dependent volume control.
▷ "PDC": volume of the PDC signal compared to the entertainment sound output.
▷ "Gong": volume of the signal, such as the safety belt reminder, compared to the entertainment sound output.
▷ "Microphone": volume of the microphone during a phone call.

▷ "Loudspeak.": volume of the loudspeakers during a phone call.
The following volumes are only stored for the respective paired telephone: "Microphone", "Loudspeak.".

See also:

The concept
The system is functional at speeds beginning at approx. 20 mph/30 km/h. The speed specified using the lever on the steering column is maintained. The system brakes on downhill gradients if engin ...

Interior
The 135i's interior design is fairly traditional, with more upright shapes than sweeping contours. Dual-zone climate controls sit below the center air vents and optional navigation system, with BM ...

Brake pedal feel
When the system brakes and you also depress the brake pedal, a somewhat different braking feel results. ...