Assistance systems
-Due to the interlinking of various vehicle sys
tems, critica l driving situations can be detected
by
pre sense basic and measures for preventa
tive occupant protection are can be initiated.
-The pre sense front uses the data from the ra
dar sensors and calcu lates the probability of an
accident
c> page 127. An impending collision
with vehicles can be detected within the limits
of the system . In this case, the system warns
the driver visually, acoustically and with a jerk
on the brakes if necessary. If needed, it can i ni
tiate a partia l or full dece le rat ion to reduce the
collision speed o r to avoid the coll ision unde r
ce rtain c ircumstances. In conjunction with pre
sense basic, the front safety belts are also re
versib ly tensioned when needed . The pre sense
front is also active when adaptive cruise con
trol* is sw itched off.
.,&. WARNING
Also follow the general instructions found in
c> .&. in General information on page 127.
(i) Tips
-Certain pre sense functions switch off when
driving in reverse.
-The pre sense functions may not be availa ble if there is a malfunction in the ESC sys
tem or the airbag contro l module.
-Note that the reversible belt tensioner on
the front passenger's side deactivates when
the front passenger's a irbag is deactivated .
-Switch the pre sense off when you are not
us ing public streets or when loading the ve
hicle onto a vehicle carr ier, train, ship or
other type of transportation. This can pre
vent an undes ired intervention from the pre
sense system.
Audi pre sense basic
Description
Applies to: veh icles with Audi pre sense basic
The pre sense basic funct ions are activated at a
speed of approximately 20 mph (30 km/h) or h igher.
134 The following
functions can be triggered under
certain conditions within the limits of the sys
tem:
-Tensioning of the safety bel ts (for examp le,
during heavy braking): the front safety belts
have reversib le be lt tensioners. If a collision
does not occur, the safety belts loosen slightly
and are ready to trigger aga in.
-Initiating the closing of the windows and the
panorama glass roof* (for examp le when un
der- or oversteering).
Audi drive select* : the trigger times are adjusted
depending on the mode selected.
Audi pre sense front
· Description
Applies to: vehicles with Audi pre sense front
Within the limits of the system and depending
on the situation and speed, pre sense front can
warn you about impending collisions with sta
tionary, stopped, and moving vehicles and ini
tiate appropriate braking measures.
If detection is not possib le, then pre sense front
does not react.
The following func tions trigger in conjunction
with pre sense basic at corresponding vehicle
speeds :
-Reversible tens ion ing of the front safety belts.
-Closing the windows and panorama glass roof*.
Warnings and braking
Applies to: vehicles with Audi pre sense front
Fig. 140 Instrument cluster: approach warning
0
;
::c
