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:
Brake system
Brakes require an initial break-in period of approx.
300 miles/500 km to achieve optimized
contact and wear patterns between brake pads
and discs. Drive moderately during this break-in
period. ...
Check the tire inflation pressure
regularly
Check and, if necessary, correct the tire inflation
pressure, at least twice a
month and before starting on a long trip.
Low tire inflation pressure increases rolling resistance
and thus raises ...
Functional readiness of the airbag system
When the ignition is switch on, the warning
lamp in the instrument cluster lights
up briefly and thereby indicates the operational
readiness of the entire airbag system
and the belt tensione ...