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:

    Xenon headlamps
    Because of the long life of these bulbs, the likelihood of failure is very low. Switching the lamps on and off frequently shortens their life. If a bulb fails, switch on the front fog lamps and ...

    Switching the microphone to mute
    When a call is active, the microphone can be muted. 1. "Telephone" 2. "Active calls" 3. "Microphone mute" A microphone that has been switched to mute is automati ...

    Capturing the image
    The image is captured by two cameras integrated in the exterior mirrors and by the backup camera. The range is at least 7 ft/2 m to the side and rear. In this way, obstacles up to the height of ...