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- Due to t he interlinking of various vehicle sys-
tems, critica l driving situations can be detected
by
pre sense basic and measures f or preventa -
t ive occupant protection are can be initiated.
- The
pre sense front uses the data from the ra-
dar sensors and calculates the probab ili ty of an
accident
c::> page 124. 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 je rk
on the brakes if necessary. If needed, it can ini-
tiate a part ial or full decelerat ion to reduce t he
coll ision speed or to avoid t he coll ision under
cert ain circumstances. In conjunc t ion wit h pre
sense basic, the front safety belts are also re-
versib ly tensioned w hen needed. The pre sense
front is also active when adaptive cruise con-
trol* is switched off.
A WARNING
Also follow the genera l instructions fo und in
c::> .&. in General information on page 124.
(D Tips
- Certain pre sense f unctions switch off when
driving in reverse.
- The pre sense functions may not be availa-
ble if there is a ma lfunction in the ESC sys-
tem or the airbag contro l modu le.
- Note t hat the reversible belt tensioner on
t he front passenger's side deactivates w hen
the front passenger's airbag is deact ivated .
- Switch the pre sense off when you are not
using public streets or whe n loadi ng the ve-
hicle onto a vehicle carrier, train, ship or
othe r type of t ransportation . This can pre-
vent an undesired intervent ion from the pre
sense syst em .
Audi pre sense basic
Applies to: vehicles with Audi pre sense basic
The pre sense basic fu nct ions are activ at ed at a
speed of approximate ly 20 mph (30 km/h) or
higher .
The fo ll ow ing funct ions can be t rigge red unde r
cert ain cond itions withi n t he li mi t s of t he sys-
tem :
A ss istance s ystems
- Tensioning of the safety belts (for examp le,
during heavy braking) : the front safety belts
have reversible belt tens ioners. If a collision
does not occur, the safety belts loosen slig htly
and are ready to tr igger again.
- Initiat ing the closing of the w indows 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
Appli es to : vehicles wi th Audi pre sense fro nt
Fig. 134 I nst rumen t cluster : approac h warni ng
Description
Wi t hin the lim it s of t he syst em and depending
on the sit uat ion and speed, pre sense fr ont can
warn you about impending collisions with sta-
t ionary, stopped, and moving vehicles and ini-
tiate appropr iate braking measures.
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a:
If detection is not possible, then pre sense front
does not react.
The following fu nct ions t rigger in conjunction
wi t h pre sense basic at corresponding vehicl e
speeds:
- Reversible tens ioning of the front safety belts.
- Closing t he windows and panorama glass roof* .
Early warning / acute warning
The system can provide visual and audible warn-
ings when dangerous situations are detected.
The
early warning may occur if:
- a vehicle driving ahead brakes st rong ly,
131
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