Ass is t
- The pre sense basic functions may not be
available if there is a malfunction in the ESC
system or the airbag control module.
- Note that with pre sense basic, the reversi·
ble safety belt pretensioner on the front
passenger's side deact ivates when the front
passenger's airbag is deactivated .
Audi pre sense front
Description
Applies to vehicles: with Audi pre sense front or Audi adaptive
cruise control
Pre sense front informs you if the d istance to the
vehicle ahead falls below the safe distance for a n
extended per iod of time.
It c an warn of a possi·
b le co llision and initiate braking maneuvers,
within the limits of the system.
When detected in time, the system can assess
dangerous situations whe re a n object ahead
b rakes s udden ly or if you r own vehicle is traveling
at a high speed and approaching an object t hat is
moving more s lowly . If detection is not possible ,
then pre sense front does not re act .
Warnings
Applies to vehicles: with Audi pre sense front or Audi adaptive
cruise control
F ig . 90 nst rument clus te r: app roac h warn ing
The system recogn izes va rious dangerous situa
tions:
- Vehicles with adaptive cruise control: the
dis
tanc e warnin g
occurs if you dr ive too closely to
the object ahead for a long period of time .
If
the object ahead brakes strong ly, you would not
l l Thi s is no t ava ilab le i n so me c oun tries .
104
be able to avoid a collision . The indicator light
• indicates th is.
- T he
approach warn ing occurs when an object
ahead is traveling more slowly or brakes strong·
Ly. When this warning occ urs, it may on ly be
possible to avo id a collision by swerving o r
b raking strongly. The me ssage
Audi pre se nse
• Dis tance
q fig. 90 and a warning tone will
warn you about the danger . For veh icles with
adaptive cru ise control, the. indicator light
also turns on.
If you do no t reac t enough or no t at all to a dan
gerous situation that was detected by the sys
tem, p re sense front provides assistance by ap
plying the b rakes .
- If a collision is imm inen t, the system will first
provide a n
acu te warning by braking sharp ly .
You will also be made aware of the danger by the inst rument cluste r display
q fig. 90. For
veh icles with adaptive cru ise cont ro l, the . in
dic ator light a lso tu rns o n.
- If you do not reac t to the acu te warning, pre
sense front ca n brake w ith increasing force
w it hi n the lim its of the system
1> . T his reduces
the vehicle speed in the event o f a collis io n. The
message
Audi pre sense -Input also appears.
- At low driving speeds, pre sense front can begin
complete decelerat ion shortly before a
co llision
l).
- If p re sense front determines that you are not
braki ng strong ly enough when a coll is ion is im·
minent, it can increase the brak ing force .
A WARNING
-
-Pre sense front cannot overcome natura l
phys ica l laws. It is a system designed to as
sist and it cannot prevent a collision. The
driver m ust always intervene . The d river is
always responsib le for brak ing at the correct
time . Do not let the in crea sed safety provid
ed tempt you into ta king risks. This could in
crease your risk of a collision .
- The system can dep loy inco rrec tly d ue to
sys tem-specific l imits.
