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Adaptive Cruise Control (ACC)
Adaptive Cruise Control
A
(ACC)
B
b Vehicles with PDK.
C
Adaptive cruise control (ACC) maintains any
D
selected speed between approx. 30 and
210 km/h (20 and 130 mph) when driving on open
E
roads without you having to use the accelerator.
F
If a vehicle travelling ahead of you in the same lane
is detected as driving slower than the selected
G
speed, adaptive cruise control will automatically
H
maintain a set distance from the vehicle in front.
Adaptive cruise control slows your vehicle down if
I
the distance to the vehicle ahead becomes too
J
short and accelerates your vehicle if the distance
increases.
K
Lack of attention
WARNING
L
The increased comfort offered by the adaptive
M
cruise control must not induce you to take risks
N
with your safety. The driver remains responsible
when driving, e.g. keeping a safe distance or
O
driving at an appropriate speed, regardless of
the adaptive cruise control. The system is no
P
substitute for the driver's attention.
Q
e Drive with extreme care.
e Brake the vehicle immediately with the
R
footbrake if the deceleration of the adaptive
S
cruise control is not sufficient.
e Make sure that you can resume control of the
T
vehicle at all times.
U
V
W
X
Y
Z
32
Unsafe traffic situation
WARNING
and unfavourable road
conditions
If the current situation does not permit driving
safely at a constant speed at an adequate
distance from the vehicle in front, use of the
adaptive cruise control may lead to an accident.
e Do not use the adaptive cruise control in heavy
traffic, in road works, in towns, on twisting
roads or under unfavourable road conditions
(e.g. wintry or wet conditions or varying road
surfaces).
Failure of adaptive
WARNING
cruise control to detect
vehicles or objects
Adaptive cruise control will not detect stationary
or slow-moving vehicles, pedestrians, objects on
the road, oncoming vehicles in the same lane or
cross traffic.
e Intervene yourself if necessary.
e Always keep the direction of travel in your field
of view.
Radar sensor
Adaptive cruise control uses a radar sensor
located in the middle of the front apron (arrow).
Fig. 1: Location of radar sensor
Information
e Always keep the radar sensor clean and free of
ice and snow to ensure that it is fully functional.
For car care instructions:
f Refer to chapter "Care" on page 65.
Impaired radar sensor
WARNING
vision
Radar sensor vision can be impaired by rain, snow,
ice or heavy spray. Vehicles in front will not be
detected properly or may not be detected at all.
e Do not use adaptive cruise control under these
conditions.
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