The concept

This system issues a warning at speeds above approx. 40 mph/65 km/h if the vehicle is about to leave the lane on roads with lane markings.

The steering wheel begins vibrating lightly.

The system does not issue a warning if the turn signal is set before leaving the lane.

    See also:

    Supplementary text messages
    You can call up more information, e.g., on the cause of a malfunction and on how to respond, via Check Control. In urgent cases, this information will be shown as soon as the corresponding lamp ...

    Adjusting
    The parking lamps or low beams must be switched on to adjust the brightness. Adjust the brightness using the thumbwheel. ...

    Tire age
    The tire manufacturing date is contained in the tire identification mark: DOT ... 3410 means that the tire was manufactured in the week 34 of 2010. BMW recommends that you replace all tires aft ...