Volvo S60 Owner's Manual page 186

04 Driver support
Collision Warning with Auto Brake & Pedestrian Protection*
Collision Warning with Auto Brake is tempo-
rarily deactivated with reverse gear engaged.
Collision Warning with Auto Brake is not acti-
vated at low speeds - under 4 km/h, which is
why the system does not intervene in situa-
tions where the car is approaching a vehicle
in front very slowly, e.g. when parking.
In situations where the driver demonstrates
active, aware driving behaviour, a collision
warning may be postponed slightly in order to
04
keep unnecessary warnings to a minimum.
When Auto Brake has prevented a collision
with a stationary object the car remains sta-
tionary for a maximum of 1.5 seconds. If the
car is braked for a vehicle in front that is mov-
ing, then speed is reduced to the same speed
as that maintained by the vehicle in front.
On a car with manual gearbox the engine
stops when Auto Brake has stopped the car,
unless the driver manages to depress the
clutch pedal beforehand.
Camera sensor limitations
The car's camera sensor is also used - as
well as by Collision Warning with Auto Brake
- by the functions:
•
Automatic main/dipped beam dimming -
see page 92
•
Road sign information - see page 152
*
184
Option/accessory, for more information, see Introduction.
•
Driver Alert Control – see page 188
•
Lane Departure Warning – see page 192.
NOTE
Keep the windscreen surface in front of the
camera sensor clean from ice, snow, mist
and dirt.
Do not attach or fit anything to the wind-
screen in front of the camera sensor, as
this could reduce or prevent the function
of one or more camera-dependent sys-
tems.
The camera sensors have limitations similar
to the human eye, i.e. they "see" worse in
darkness, heavy snowfall or rain and in thick
fog for example. Under such conditions the
functions of camera-dependent systems
could be significantly reduced or temporarily
disengaged.
Strong oncoming light, reflections in the car-
riageway, snow or ice on the road surface,
dirty road surfaces or unclear lane markings
could also significantly reduce camera sensor
function when it is used to scan the carriage-
way and detect pedestrians and other vehi-
cles.
The field of vision of the camera sensor is lim-
ited, which is why pedestrians and vehicles
cannot be detected in some situations, or
they are detected later than anticipated.
During very high temperatures the camera is
temporarily switched off for about 15 minutes
after the engine is started in order to protect
camera functionality.
Fault tracing and action
If the display shows the message
Windscreen Sensors blocked
means that the camera sensor is blocked and
cannot detect pedestrians, vehicles or road
markings in front of the car.
At the same time, this means that - besides
Collision Warning with Auto Brake - the Auto-
matic main/dipped beam dimming, Road sign
information, Driver Alert Control and Lane
Departure Warning functions will not have full
functionality either.
The following table presents possible causes
for a message being shown along with the
appropriate action.
then this