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:
Controls
The audio and video sources can be controlled using the:
> Buttons near the CD/DVD player
> iDrive
> Buttons on the steering wheel,
> Programmable memory keys,
> Voice activation s ...
Brake force display
The concept
▷ During normal brake application, the outer
brake lamps light up.
▷ During heavy brake application, the inner
brake lamps light up in addition. ...
Functional requirements
The system must have been initialized when the
tire inflation pressure was correct; otherwise,
reliable signaling of a flat tire is not ensured. Initialize
the system after each correction of th ...
