See also:

Ultrasound sensors
The ultrasounds sensors used to measure parking spaces are located in the side turn signals. To ensure full operability: ▷ Keep the sensors clean and free of ice. ▷ When using high- ...

Tilt alarm sensor
The tilt of the vehicle is monitored. The alarm system responds in situations such as attempts to steal a wheel or when the car is towed. ...

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 ...