Adaptive Cruise Control; Warning Lamp, Braking By Driver Required; Automatic Deactivation; Driver Operation - Volvo XC70 Owner's Manual

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 aims to control
the speed in a smooth way. In situations that
demand sudden braking you must brake
yourself. This applies with large differences in
speed, or if the vehicle in front brakes heavi-
ly. Due to limitations in the radar sensor,
braking may come unexpectedly or not at all,
see page 140.
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
is shown in the display, see
vailable
page 139.
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.
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.

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
celled is shown in the display. You must then
Cruise Una-
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
04 Comfort and driving pleasure

Adaptive cruise control*

Operation
4
Display and controls
Activate and resume settings, increase
speed
Standby mode, on/off
Set distance
Cruise Can-
Activating and setting the speed

Driver operation

Cruise control is deactivated when the
brakes are used, the gear selector is moved
to neutral position, or if the accelerator pedal
is depressed for a longer period. Cruise con-
trol then changes over to standby mode and
the driver has full control of the car. If the ac-
celerator pedal is kept depressed for a short-
er period, for example during overtaking,
cruise control is temporarily disengaged and
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