Audi Q7 - Transverse Dynamics Function; Crash Function in Low Relative Speed Range

20
Transverse dynamics function
If the vehicle oversteers or understeers, the Electronic Stability
Control (ESC) will try to stabilise the vehicle. If the vehicle
becomes unstable because certain physical limits have been
exceeded, the airbag control unit J234 initiates partial tensioning
of the electrically reversible seat belt tensioners. A message
indicating that Audipresense is active appears in the instrument
cluster. No audible signal is given.
If the vehicle can no longer be stabilised, the following actions are
initiated:
• The electrically reversible seat belt tensioners are fully ten-
sioned. A message indicating that Audipresense is active
appears in the instrument cluster. No audible signal is given.
• The side windows and the panoramic glass sunroof
2)
are closed
when the seat belts are fully and partially tensioned.
• When the seat belts are fully and partially tensioned, the
hazard warning flashers
1)
are activated as long as the vehicle is
unstable.
System characteristics
• If Audidriveselect is set to "dynamic" or "lift/oroad", the
seat belts are not partially tensioned.
• If Audipresense is switched o in the MMI, the seat belts are
not partially tensioned either.
• If the vehicle is unstable, if the Electronic Stability Control is set
to "lift/oroad" or "o" and if the driver actively applies the
brakes, the seat belts are fully tensioned. A message indicating
that Audipresense is active appears in the instrument cluster.
No audible signal is given. The side windows and the panoramic
glass sunroof
2)
are closed. The hazard warning flashers
1)
are
activated as long as the vehicle is unstable.
Crash function in the low relative speed range
If the airbag control unit J234 detects a head-on collision at a low
relative speed
3)
and at a low rate of vehicle deceleration, the airbag
control unit decides situation-specifically on the basis of the
control unit algorithm whether to initiate electrical full tension-
ing.
If the above-mentioned conditions apply, pyrotechnic components
such as the airbags do not deploy. No further actions are initiated,
e.g. activation of the hazard warning flashers
1)
, closing of the side
windows or the panoramic glass sunroof
2)
.
1)
Not available in all countries.
2)
Optional equipment.
3)
The relative speed is the dierence in speed between one's own vehicle and the following vehicle.
637_041
Audi pre sense
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