After the ignition is switched off

The roof can still be operated for approx. 1 minute, as long as no door has been opened.

    See also:

    Hydroplaning
    On wet or slushy roads, a wedge of water can form between the tires and road surface. This phenomenon is referred to as hydroplaning. It is characterized by a partial or complete loss of contact ...

    BMW EfficientDynamics: More power, less fuel consumption
    With high-performance engines, superior suspension technology and an extremely torsion-resistant body, the new BMW 3-Series is building on its position as the sportiest sedan in its segment. It is ...

    Switching on automatically
    Select transmission position R with the engine running. ...