Volvo V40 Owner's Manual page 203

WARNING
Adaptive cruise control is not a collision
avoidance system. The driver must inter-
vene if the system does not detect a vehi-
cle in front.
The adaptive cruise control does not brake
for humans or animals, and not for small
vehicles such as bicycles and motorcy-
cles. Nor for oncoming, slow or stationary
vehicles and objects.
Do not use the adaptive cruise control, for
example, in city traffic, in dense traffic, at
junctions, on slippery surfaces, with a lot
of water or slush on the road, in heavy
rain/snow, in poor visibility, on winding
roads or on slip roads.
The distance to the vehicle ahead is mainly
measured by a radar sensor. Cruise control
regulates the speed with acceleration and
braking. It is normal for the brakes to emit a
low sound when they are being used by the
adaptive cruise control.
WARNING
The brake pedal moves when Cruise Con-
trol brakes. Do not rest your foot beneath
the brake pedal as it may become trapped.
The adaptive cruise control aims to follow the
vehicle ahead in the same lane according to
Queue Assist (p. 206) (in cars with automatic gearbox) can operate in the range of 0-200 km/h.
11
what the driver set for time interval (p. 204). If
the radar sensor cannot see any vehicle in
front then the car will instead maintain the
cruise control's set speed. This also happens
if the speed of the vehicle in front exceeds
the cruise control's set speed.
The adaptive cruise control aims to control
the speed in a smooth way. In situations that
demand sudden braking the driver must
brake himself/herself. This applies with large
differences in speed, or if the vehicle in front
brakes heavily. Due to limitations in the radar
sensor (p. 209) braking may come unexpect-
edly or not at all.
The adaptive cruise control can be activated
to follow another vehicle at speeds from
30 km/h 11 up to 200 km/h. If the speed falls
below 30 km/h or if the engine speed
becomes too low, the cruise control is set in
standby mode at which automatic braking
ceases - the driver must then take over him-
self/herself to maintain a safe distance to the
vehicle ahead.
Warning lamp - braking by driver
required
Adaptive cruise control has a braking
capacity that is equivalent to more than 40%
of the car's braking capacity.
If the car needs to be braked more heavily
than cruise control capacity and the driver
07 Driver support
does not brake, then cruise control uses the
warning lamp and warning sound from the
collision warning system (p. 223) in order to
alert the driver that immediate intervention is
required.
NOTE
The warning lamp may be difficult to see in
strong sunlight or when wearing sun-
glasses.
WARNING
Cruise Control warns only of vehicles
which the radar sensor has detected.
Hence the warning may not be given, or it
may be given with a certain delay. Do not
wait for a warning without braking when so
required.
Steep roads and/or heavy load
Bear in mind that the adaptive cruise control
is primarily intended for use when driving on
level road surfaces. It may have difficulty in
keeping the correct distance from the vehicle
ahead when driving on steep downhill slopes,
with a heavy load or with a trailer - in which
case, be extra attentive and ready to slow
down.
Related information
•
Adaptive cruise control (ACC)* (p. 199)
*
Option/accessory, for more information, see Introduction.
07
201