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:

    Displaying stored Check Controlmessages
    1. "Vehicle Info" 2. "Vehicle status" 3. "Check Control" 4. Select the text message. ...

    Stowing cargo
    ▷ Heavy cargo: stow as far forward and as low as possible, ideally directly behind the cargo area separating wall. ▷ Very heavy cargo: when the rear seat is not occupied, secure e ...

    Rear seat heating
    Rear seat heating Switching on Press the button once for each temperature level. The maximum temperature is reached when three LEDs are lit. If the drive is continued within approx. 15 mi ...