Airbags; Atc - BMW 528I Owner's Manual

Airbags

188n
Deceleration sensors continuously
monitor the physical forces acting upon
the vehicle. If, as the result of a frontal
collision, vehicle deceleration is
reached at which the protection of the
safety belts alone is no longer ade-
quate, the gas generators of the driver-
side and passenger-side airbags are ig-
nited simultaneously. However, the
passenger-side airbag is only triggered
if an additional sensor has recognized
that the passenger seat is occupied.
In the event of a side collision, the head
protection and side airbags in the front
*
and rear are triggered if necessary.
The airbags located under the marked
covers inflate and unfold in a matter of a
few milliseconds. In this process they
tear through the rated breaking points
of the upholstered covers or press them
out.
Because the inflation process must be
virtually instantaneous, it is necessarily
accompanied by a certain amount of
ignition and inflation noise. The gas
which the system employs to inflate the
airbag is not dangerous. Smoke
appears as the gas dissipates.
The entire process is completed within
fractions of a second.

ATC

*
ATC
On vehicles with automatic transmis-
sion, Adaptive Transmission Control
(ATC) uses a number of factors to cal-
culate the gear which provides the
maximum efficiency. In this process it
monitors your personal driving style, the
situation in which you are driving, the
condition of the road and the traffic
conditions.
ATC recognizes your personal driving
style from the positions and movements
of the accelerator pedal, deceleration
when braking and lateral acceleration
through curves. Four different shift
characteristics – from comfort-oriented
to performance-oriented – are available
for selection by ATC.
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