System limits

Due to system limitations, warnings may Be alert
Due to system limitations, warnings may be not be issued at all, or may be issued late or improperly. Therefore, always be alert and ready to intervene; otherwise, there is the danger of an accident occurring.◀

Detection range

This may result in the warning not being issued or being issued late.

For example, the following situations may not be detected:

▷ Slow moving vehicles when you approach them at high speed.
▷ Vehicles that suddenly swerve in front of you or sharply decelerating vehicles.
▷ Vehicles with an unusual rear appearance.
▷ Two-wheeled vehicles ahead of you.

Functional limitations

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

▷ In heavy fog, rain, sprayed water or snowfall.
▷ In tight curves.

Prewarning sensitivity

Each time after the prewarning time is set, this may result in increased false warnings.

    See also:

    Even more entertainment at the wheel: with BMW Live and BMW Online
    Subject to owning a suitable internet-compatible mobile phone and arranging a requisite data tariff, new BMW 3-Series Sedan customers can enjoy a selection of services from the existing BMW Online ...

    Automatic deactivation during forward travel
    The system switches off when a certain driving distance or speed is exceeded. Switch the system back on if necessary. ...

    Switching on/off
    Switching on/off Press button 1 on the steering wheel. ▷ On: lane markings 2 are lit. ▷ Off: lane markings 2 go out. The system can issue warnings at speeds above approx. 40 mph/65 ...