See also:

Radar sensor
Position Position The radar sensor is integrated in the bumper. Dirty or covered sensor A dirty or covered sensor may hinder the detection of vehicles. ▷ If necessary, clean the radar s ...

Environmental conditions
► Say the commands, numbers, and letters smoothly and with normal volume, emphasis, and speed. ► Always say commands in the language of the voice activation system. ► When selec ...

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 ...