On-demand control of ancillary units saves energy

Intelligent energy management in the new BMW 3-Series is further enhanced by the ancillary units, which consume significantly less energy compared with conventional systems. Examples include the on-demand coolant pump, the electronically controlled oil pump and the electromechanical steering system, which only consumes electric power when steering assistance is actually required. The special air conditioning compressor featured on many of the sports sedan models works on the same principle. As soon as the driver switches the air conditioning off, the belt drive to the compressor is disconnected by a magnetic clutch, to minimise power drain.

    See also:

    Mirror display
    The point of the compass is displayed in the mirror when driving straight. ...

    Setting the compass zones
    Sets the particular compass zones on the vehicle so that the compass operates correctly; refer to World map with compass zones. World map with compass zones World map with compass zones Proce ...

    Selection lists in theinstrument cluster
    The concept The following can be operated using the buttons and the thumbwheel on the steering wheel and the display in the instrument cluster: ► Current audio source. ► Redial on t ...