2011 VOLVO V60 sensor

04 Comfort and driving pleasure
Collision Warning & Pedestrian Detection with Auto Brake*
04

* Option/accessory, for more information, see Introduction.189 Function
Functions overview.
Visual warning signal in the event of a col-
lision risk
Radar sensor
Camera sensor
Collision warningTogether with a camera sensor, the radar sen-
sor detects pedestrians, stationary vehicles as
well as vehicles driving in the same direction in
front of the car.
In the event of there being a risk of collision with
a pedestrian or such a vehicle your attention is
drawn with a red flashing warning signal and a
warning sound.
Brake supportIf the risk of collision still increases after the
collision warning then the brake support is acti-
vated. The brake support prepares the brake
system for rapid braking and the brakes are
applied gently, which may be noticed as a
slight jerk.
If the brake pedal is depressed sufficiently
quickly then full brake function is implemented.
Brake support also reinforces the driver's brak-
ing if the system considers that the braking is
not sufficient to avoid a collision.
Auto BrakeIf the driver has not yet started an evasive
manoeuvre in this situation and the risk of a
collision is imminent then the Auto Brake func-
tion comes into effect, without the driver need-
ing to touch the brake pedal. Braking then
takes place with full brake force in order to
reduce collision speed, or with limited brake
force if it is sufficient to avoid collision.
Operation
Settings are made from MY CAR via the centre
console display screen and menu system. For
information on how the menu system is used,
see page 142.
NOTE
The Brake Support and Auto Brake func-
tions are always enabled - they cannot be
deactivated.
On and OffTo select whether the collision warning system
should be switched on or off: Search with the
menu system MY CAR via the centre console
display screen and locate Settings
Car
settings
Driver support systems
Collision Warning. For information on the
menu system,see page 142.
An activated function is tested at each engine
start by briefly illuminating the warning lamp's
separate points of light.
When starting the engine, the setting that was
selected when the engine was switched off is
obtained automatically.
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04 Comfort and driving pleasure
Collision Warning & Pedestrian Detection with Auto Brake*
04

* Option/accessory, for more information, see Introduction.191
WARNING
Warnings and brake interventions could be
implemented late or not at all if the traffic
situation or external influences mean that
the radar or camera sensor cannot detect a
pedestrian or a vehicle in front correctly.
The sensor system has a limited range for
pedestrians and the system therefore pro-
vides effective warnings and brake inter-
ventions at vehicle speeds up to 50 km/h.
For stationary or slow-moving vehicles,
warnings and brake interventions are effec-
tive at vehicle speeds up to 70 km/h.
Warnings for stationary or slow-moving
vehicles could be disengaged due to dark-
ness or poor visibility.
The collision warning system uses the same
radar sensors as adaptive cruise control. For
more information on the radar sensor and its
limitations, see page 177.
If warnings are perceived as being too frequent
or disturbing then the warning distance can be
reduced. This would lead to the system warn-
ing at a later stage, which reduces the total
number of warnings.
When the car is reversing Collision Warning
with Auto Brake cannot be activated.
Collision Warning with Auto Brake is not acti-
vated at low speeds - under 4 km/h, which iswhy the system does not intervene in situations
where the car is approaching a vehicle in front
very slowly, e.g. when parking.
Driver commands are always prioritised, which
is why Collision Warning with Auto Brake does
not intervene in situations where the driver is
steering, braking or accelerating in a clear
manner, even if a collision is unavoidable.
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 moving,
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 limitationsThe car's camera sensor is used by the three
functions - Collision Warning with Auto Brake,
Driver Alert Control, see page 195 and Lane
Departure Warning, see page 198.
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 systems.
The camera sensors have limitations similar to
the human eye, i.e. they "see" worse in dark-
ness, heavy snowfall or rain and in thick fog for
example. Under such conditions the functions
of camera-dependent systems could be sig-
nificantly 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 func-
tion when it is used to scan the carriageway
and detect pedestrians and other vehicles.
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.
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04 Comfort and driving pleasure
Collision Warning & Pedestrian Detection with Auto Brake*
04
192* Option/accessory, for more information, see Introduction.
Detection of pedestrians (Pedestrian
detection)
Optimal examples of what the system regards as
pedestrians with clear body contours.
Optimal performance of the system requires
that the system function that detects pedes-
trians receives as unambiguous information as
possible about the contours of the body - this
implies the opportunity to identify the head,
arms, shoulders, legs, upper and lower body
combined with a normal human pattern of
movement.
If large parts of the body are not visible to the
camera then the system cannot detect a
pedestrian.
•In order for a pedestrian to be detected he/
she must appear full-length and have a
height of at least 80 cm.
•The system cannot detect a pedestrian
carrying larger items.
•The camera sensor's ability to see pedes-
trians at dusk and dawn is limited - just like
the human eye.
•The camera sensor's capacity to detect
pedestrians is deactivated when driving in
darkness and tunnels - even when street-
lights are lit.
WARNING
Collision Warning with Auto Brake is an
assistance tool.
It cannot detect all pedestrians in all situa-
tions and it cannot see e.g. partially
obscured pedestrians, shorter people or
children (below 80 cm) or people in clothing
that hides the contours of the body.
•The driver is always responsible that the
vehicle is driven properly and with a
safety distance adapted to the speed.
Fault tracing and action
If the display shows the message Windscreen
Sensors blocked then this means that the
camera sensor is blocked and cannot detectpedestrians, vehicles or road markings in front
of the car.
In turn this means that the Collision Warning
with Auto Brake, Lane Departure Warning and
Driver Alert Control functions are not operating
with full functionality.
The following table presents possible causes
for a message being shown along with the
appropriate action.
CauseAction
The windscreen sur-
face in front of the
camera is dirty or
covered with ice or
snow.Clean the wind-
screen surface in
front of the camera
from dirt, ice and
snow.
Thick fog, heavy rain
or snow means that
the camera does not
work sufficiently
well.No action. At times
the camera does not
work during heavy
rain or snowfall.
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04 Comfort and driving pleasure
Collision Warning & Pedestrian Detection with Auto Brake*
04
194* Option/accessory, for more information, see Introduction.
SymbolMessageSpecification
Wind-
screen
Sensors
blockedThe camera sensor is temporarily disengaged.
Shown in the event of snow, ice or dirt on the windscreen for example.
•Clean the windscreen surface in front of the camera sensor.
Read about the limitations of the camera sensor, see page 191.
Radar
blocked
See man-
ualCollision Warning with Auto Brake is temporarily disengaged.
The radar sensor is blocked and cannot detect other vehicles. For example, in the event that heavy rain or if slush has
collected in front of the radar sensor.
Read about the limitations of the radar sensor, see page 177.
Collision
warn.
Service
requiredCollision Warning with Auto Brake is fully or partially disengaged.
•Visit a workshop if the message remains - an authorised Volvo workshop is recommended.
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04 Comfort and driving pleasure
Driver Alert System – DAC*
04

* Option/accessory, for more information, see Introduction.195 General information on Driver Alert
System
The Driver Alert System is intended to assist
drivers whose driving ability is deteriorating or
who are inadvertently leaving the lane they are
driving on.
The Driver Alert System consists of two differ-
ent functions, which can either be switched on
at the same time or individually:
•Driver Alert Control (DAC)
•Lane Departure Warning (LDW), see
page 198.
A switched-on function is set in standby mode
and is not activated automatically until speed
exceeds 65 km/h.
The function is deactivated again when speed
decreases to below 60 km/h.
Both functions use a camera which is depend-
ent on the lane having side markings painted
on each side.
WARNING
The Driver Alert System does not work in all
situations but is instead only intended to be
of supplementary assistance.
The driver always has ultimate responsibility
that the car is driven safely.
General information on Driver Alert
Control - DAC
The function is intended to attract the driver's
attention when he/she starts to drive less con-
sistently, e.g. if he/she becomes distracted or
starts to fall asleep.
A camera detects the side markings painted on
the carriageway and compares the section of
the road with the driver's steering wheel move-
ments. The driver is alerted if the vehicle does
not follow the carriageway evenly.
NOTE
The camera sensor has certain limitations,
see page 191.
The objective for DAC is to detect slowly dete-
riorating driving ability and it is primarily
intended for major roads. The function is not
intended for city traffic.
In some cases driving ability is not affected
despite driver fatigue. In which case there may
not be any warning issued for the driver. For
this reason it is always important to stop and
take a break in the event of any signs of driver
fatigue, irrespective of whether or not DAC
issues a warning.
NOTE
The function must not be used to extend a
driving stint. Always plan breaks at regular
intervals and ensure that you are fully
rested.
LimitationIn some cases the system may issue a warning
despite driving ability not deteriorating, for
example:
•if the driver tests the LDW function.
•in strong side winds.
•on rutted road surfaces.
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04 Comfort and driving pleasure
Driver Alert System – DAC*
04
* Option/accessory, for more information, see Introduction.197
SymbolMessageSpecification
Driver Alert UnavailableThe carriageway does not have clear side markings or the camera sensor is temporarily disengaged.
Read about the limitations of the camera sensor, see page 191.
Driver AlertThe function analyses the driver's driving style.
The number of bars can vary in the range 1-5, where a low number of bars indicates inconsistent
driving ability. A high number of bars indicates stable driving.
Driver Alert Time for a
breakThe vehicle has been driven inconsistently - the driver is alerted by an acoustic warning signal + text.
Windscreen Sensors
blockedThe camera sensor is temporarily disengaged.
Shown in the event of snow, ice or dirt on the windscreen for example.
•Clean the windscreen surface in front of the camera sensor.
Read about the limitations of the camera sensor, see page 191.
Driver Alert Sys Service
requiredThe system is disengaged.
•Visit a workshop if the message remains - an authorised Volvo workshop is recommended.
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04 Comfort and driving pleasure
Driver Alert System - LDW*
04
198* Option/accessory, for more information, see Introduction.
General information on Lane Departure
Warning - LDW
The function is intended to reduce the risk for
single-vehicle accidents – accidents where, in
certain situations, the vehicle leaves the car-
riageway and is in danger of driving either into
a ditch or into oncoming traffic.
LDW consists of a camera that detects the side
markings painted on the carriageway. The
driver is alerted by an acoustic signal if the
vehicle crosses a side marking.
Operation and function
The function is switched on or off by means of
a switch on the centre console. An indicator
lamp in the button illuminates when the func-
tion is switched on.
The trip computer display shows
Lane Depart
Warn Standby <65 km/h when the function is
in standby mode due to speed being below 65
km/h.
The LDW function is activated automatically
from standby mode after the camera has scan-
ned in the carriageway's side markings and
speed exceeds 65 km/h. The trip computer
display then shows
Lane Depart Warn
Available.If the camera can no longer detect the carria-
geway's side markings the display shows
Lane Depart Warn Unavailable.
If speed decreases to below 60 km/h then the
function resumes standby mode and the dis-
play shows
Lane Depart Warn Standby
<65 km/h.
If the vehicle crosses the left or right-hand side
marking of the carriageway without due cause
then the driver is alerted by an acoustic signal.
No warning is given in the following situations:
•Direction indicators activated
•The driver has his/her foot on the brake
pedal1
•In the event of the accelerator pedal being
depressed rapidly1
•In the event of rapid steering wheel move-
ments1
•In the event of a sudden turn so that the car
rolls.
The camera sensor also has certain limitations.
For more information, see page 191.
1A warning is still given when Increased sensitivity is selected, see page 200.
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04 Comfort and driving pleasure
Driver Alert System - LDW*
04

* Option/accessory, for more information, see Introduction.199
NOTE
The driver is only warned once each time the
wheels cross a line. So there is no acoustic
alarm when there is a line between the car's
wheels.
Symbols and messages in the display
SymbolMessageSpecification
Lane departure warning
On/OffThe function is switched on/off.
Shown at switch-on/off.
The text disappears after 5 seconds.
Lane Depart Warn Standby
<65 km/hThe function is set in standby mode due to speed being lower than 65 km/h.
Lane Depart Warn Unavail-
ableThe carriageway does not have clear side markings or the camera sensor is temporarily disengaged.
Read about the limitations of the camera sensor, see page 191.
Lane Depart Warn Availa-
bleThe function scans the carriageway's side markings.
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