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:

    Arming and disarming the alarmsystem
    General information When you lock or unlock the vehicle, either with the remote control, Comfort Access or at the door lock the alarm system is armed or disarmed at the same time. Door lock and a ...

    Towing other vehicles
    General information Light towing vehicle Your vehicle must not be lighter than the vehicle being towed; otherwise, it will not be possible to control vehicle response. Attaching the tow bar/t ...

    At a glance
    The concept Mobile phones or other external devices such as audio players can be connected to the vehicle via Bluetooth. After these devices are paired once, they are recognized automatically w ...