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04 Comfort and driving pleasure
124
Adaptive cruise control*
04
tive is the set speed. This is also the case if
the speed of the vehicle ahead exceeds the
cruise control set speed.
The adaptive cruise control objective is to
control the speed in a smooth way. In situa-
tions that demand sudden braking you must
brake yourself. This applies with large differ-
ences in speed, or if the vehicle in front
brakes heavily. Due to limitations in the radar
sensor, braking may come unexpectedly or
not at all, see page 124.
Adaptive cruise control can only be activated
above 30 km/h. If speed falls below 30 km/h
or if engine speed becomes too slow then
the adaptive cruise control disengages and
stops braking. In which case the driver must
immediately take over and maintain the dis-
tance to vehicles in front. The highest speed
setting is 200 km/h. In some situations when
the system cannot be activated
Cruise Una-
vailable
is shown in the display, see
page 126.
Warning lamp, braking by driver
required
Adaptive cruise control has a braking capaci-
ty that is equivalent to approximately 30 % of
the car’s braking capacity. If the car needs to
brake more heavily than cruise control ca-
pacity and the driver does not brake then a
signal sounds and the red warning lamp illu-
minates the windscreen. The red warning
lamp may be difficult to notice in strong sun-
light or when sunglasses are being worn.
Automatic deactivation
Adaptive cruise control is dependent on oth-
er systems e.g. stability and traction control
system (DSTC). If any of these systems stop
working then cruise control is automatically
deactivated.
In the event of automatic deactivation a sig-
nal will sound and the message
Cruise Can-
celled
is shown in the display. You must then
intervene and adapt your driving and speed
to vehicles in front.
An automatic deactivation can be due to:
• speed falls below 30 km/h
• wheels lose traction
• brake temperature is high
• engine speed is too low
• the radar sensor is blocked e.g. by wet
snow or rain
The radar sensor and its limitations
The radar sensor is used both by the adap-
tive cruise control and the collision warning
system. It is designed to detect cars or larger
vehicles driving in the same direction. The ra-
dar sensor does not detect pedestrians, or
oncoming, slow or stationary vehicles and
objects. Warnings are not given and braking
is not applied in such cases.
Modification of the radar sensor could result
in it being illegal to use.
The capacity of the radar sensor to detect
vehicles in front is reduced significantly:
•if the radar sensor becomes blocked and
cannot detect other vehicles e.g. in heavy
rain or slush, or if other objects have
collected in front of the radar sensor.
• if the speed of vehicles in front is signifi-
cantly different from your own speed.
WARNING
Cruise control only warns of vehicles de-
tected by the radar sensor. Consequently
there may be no warning or it may be sub-
ject to a delay. Do not wait for a warning but
brake when it is necessary.
WARNING
Accessories or other objects must not be
installed in front of the grille.
NOTE
Keep the surface in front of the radar sensor
clean.