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:

    Comparison with ordinary remote control
    The functions can be controlled by pressing the buttons of the remote control or Comfort Access. Unlocking Fully grasp a door handle, arrow 1. This corresponds to pressing the button. Lockin ...

    The concept
    The integrated universal remote control can operate up to 3 functions of remote-controlled systems such as garage door drives or lighting systems. The integrated universal remote control replac ...

    Exterior
    The exterior remains the same for 2009, and the X3 retains its awkward angles, disjointed taillights and odd lower bodywork. It's not unattractive, but it sure isn't as stylish as Mercedes' new GL ...