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100
Ad a pti v e crui se control
Adaptive
cruise
control
Speed
and distance
control
system
Description
Applies to vehicles: with Audi adaptive cruise control
The adaptive cruise control driver assistance
program is a combined speed and distance
control system.
Fig. 109 Front bumper: Posit ion of radar sensor
Any speed between about 20 mph (30 km/h)
and about 95 mph (150 km/h) can be set and
held with the adaptive cruise control. The sys-
tem also regulates a pre -set distance from the
vehicle ahead within the limits of the system
described.
Driving can be more relaxed, particularly on
long trips on interstates or on other highways
that a re generally straight .
How does it work?
You can operate the adaptive cruise contro l
using the lever on the steering wheel column
c::>
page 102, How is the speed stored?
and
c::>
page 104, How is the distance (time inter -
val) set? .
Driver inform ation
Important information is brought up in the
speedometer
and in the instrument cluster
d isplay as the vehicle is being driven
c:::,
page 1 OS, Driver information .
What is imp ort ant fo r you t o know
The adaptive cruise control is set with system-
specified limits, that is, as a driver, you will
have to adjust the speed and distance to the
vehicle ahead in some instances
c::,
page 109,
Driver intervention prompt
and
c::,
page 110,
System limitations .
A
WARNING
-
-
Improper use of the adaptive cruise con-
trol can cause collisions, other accidents
and serious personal injury.
- Never drive at speeds that are too high
for traffic, road and weather conditions.
- Never follow the vehicle in front so close-
ly that you cannot stop your veh icle safe-
ly. The adaptive cruise control cannot
brake the vehicle safely when yo u follow
another vehicle too closely. Always re-
membe r that the adaptive cruise control
has a braking powe r that is o nly about
25% of the veh icle's maximum braking
abi lity, the automatic braking function
cannot bring the vehicle to a stop .
- Never use adaptive cruise control on
roads where you cannot drive safely at a
steady speed, including city, stop-and-go
or heavy traffic, on winding roads or
when road cond it ions are poor (for exam-
p le, on ice, gravel, in fog, heavy rain or
on wet roads that increase the risk of hy-
d rop laning) .
- The radar sensor 's
vision
can be reduced
by rain, snow and heavy spray. This can
resu lt in ve hicles dr iving ahead be ing in-
adequately detected or, in some circum-
stances, not detected at a ll. If necessary,
t ake action yourself!
- Always tu rn off adap ti ve cruise control
when en t er ing turn la nes, highway exit
lanes and construction zones or similar
situations beca use the vehicle will a uto-
mat ically acce le rate to the stored speed.
- Never rest your foot on the accelerator
pedal, especially when t he adaptive
cruise contro l is being used because do-
ing so will override the braking function
and prevent the brakes from being ap-
plied by the system when it detects a sit-
uation when the brakes must be applied.
- Always remember that the adaptive
cru ise contro l has limits - it does not
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