System limits

The system cannot serve as a substitute Personal responsibility

The system cannot serve as a substitute for the driver's personal judgment of the traffic situation.

In the event of a warning, do not jerk the steering wheel, as you may lose control over the vehicle.

The system may not be fully functional in the following situations:

  • When a vehicle is approaching at a speed much faster than your own.
  • In heavy fog, rain or snowfall.
  • In tight curves or on narrow lanes.
    See also:

    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 ...

    Display in the instrument cluster
    The selected speed is displayed in the speedometer. Green: the system is actively braking the vehicle. Orange: the system is on standby. ...

    Fuel specifications
    Never use fuels labeled at the fuel pump as metal-containing. Do not use leaded gasoline or gasoline with metal-containing additives such as manganese or iron; doing so can cause permanent damag ...