Volvo V70X, C70 (2010 year). Manual — part 10
04 Comfort and driving pleasure
Collision warning with Auto-brake*
04
162
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Option/accessory, for more information, see Introduction.
WARNING
•
The camera has the same limitations as
the human eye. In other words, its
“vision is impaired” by adverse weather
conditions such as heavy snowfall,
dense fog, etc. These conditions may
reduce the function of systems that
depend on the camera or cause these
systems to temporarily stop function-
ing.
•
Never place any objects, decals, etc.,
on the windshield in front of the camera.
This could reduce or block the camera’s
function, and could cause one or more
of the systems that utilize the camera to
stop functioning.
•
Strong sunlight, reflections from the
road surface, ice or snow covering the
road, a dirty road surface, or unclear
lane marker lines may drastically reduce
the camera’s capacity to detect the side
of a lane or another vehicle.
Fault tracing and actions
If the message
Windshield sensors
blocked
is displayed, this means that the cam-
era is obscured and cannot detect vehicle or
road marker lines in front of the vehicle.
This, in turn, means that Collision Warning with
Auto-brake, Lane Departure Warning, and
Driver Alert Control will not have full function-
ality.
The table lists possible causes for this mes-
sage being displayed, and suitable actions.
Cause
Action
The surface of the windshield in front of the camera is dirty or covered
with ice or snow.
Clean or clear the section of the windshield in front of the camera.
Fog, heavy rain or snow is interfering with the function of the camera.
No action possible. Heavy precipitation may affect the function of the
camera.
04 Comfort and driving pleasure
Collision warning with Auto-brake*
04
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Option/accessory, for more information, see Introduction.
163
Cause
Action
The surface of the windshield is clean but the message remains in the
display.
Wait a short time. It may take several minutes for the camera to register
visibility.
The surface between the inside of the windshield and the camera is dirty.
Contact an authorized Volvo retailer or service technician to have this
surface cleaned.
Symbols and messages in the display
Symbol
Message
Description
Collision warn.
OFF
Collision Warning is switched off. This message is displayed when the engine is started and will dis-
appear after approx. 5 seconds. It can also be erased by pressing the READ button.
Collision warn.
Unavailable
Collision Warning cannot be activated. This message is displayed when the driver attempts to activate
the function. It will disappear after approx. 5 seconds or can be erased by pressing the READ button.
Auto braking
was activated
Auto-braking has been active.
Camera blocked
See manual
The camera is temporarily not functioning. This message is displayed if the camera is obstructed by
snow, ice, dirt, etc., on the windshield. Clean the area of the windshield in front of the camera, see
page 161 for more information on the camera’s limitations.
04 Comfort and driving pleasure
Collision warning with Auto-brake*
04
164
*
Option/accessory, for more information, see Introduction.
Symbol
Message
Description
Radar blocked
See manual
Collision Warning and Auto-brake are temporarily not functioning. The radar sensor is blocked, for
example by heavy rain or snow that has accumulated in front of the sensor, and cannot detect other
vehicles, see page 168 for more information on the radar sensor’s limitations.
Collision warn.
Service required
Collision Warning and Auto-brake are partially or completely not functioning.
Contact a trained and qualified Volvo service technician if the message remains in the display.
04 Comfort and driving pleasure
Adaptive Cruise Control (ACC)*
04
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Option/accessory, for more information, see Introduction.
165
Introduction
Adaptive Cruise Control (ACC) is an optional
system designed to assist the driver by main-
taining a set speed or a set distance to the
vehicle ahead. It is primarily intended for use
on long straight roads in steady traffic, such as
on highways and other main roads.
WARNING
•
Do not use the adaptive cruise control
system in demanding driving conditions
such as city traffic, winding roads, at
intersections, on slippery surfaces, in
poor visibility, heavy rain, etc.
•
Maintenance of cruise control compo-
nents must only be performed by an
authorized Volvo workshop.
WARNING
•
Adaptive cruise control cannot cover all
driving situations and traffic, weather
and road conditions. The Function sec-
tion provides information about limita-
tions that the driver must be aware of
before using the adaptive cruise con-
trol.
•
This system is designed to be a supple-
mentary driving aid. It is not, however,
intended to replace the driver's atten-
tion and judgement. The driver is
responsible for maintaining a safe dis-
tance and speed and must intervene if
adaptive cruise control does not main-
tain a suitable speed or suitable dis-
tance.
Function
G021412
Function overview
Warning light, braking by driver required
Controls
Radar sensor in front grille
Adaptive cruise control consists of:
•
A cruise control system to maintain a set
speed
•
A system to maintain a set distance to the
vehicle ahead (expressed as a time inter-
val. For example, you can choose to
remain approximately 2 seconds behind
the vehicle ahead).
04 Comfort and driving pleasure
Adaptive Cruise Control (ACC)*
04
166
*
Option/accessory, for more information, see Introduction.
WARNING
•
Adaptive cruise control is not a collision
avoidance system. The driver is always
responsible for applying the brakes if
the system does not detect another
vehicle.
•
Adaptive cruise control does not react
to slow moving or stationary vehicles.
The distance to the vehicle ahead (in the same
lane) is measured by a radar sensor. Your vehi-
cle's speed is regulated by acceleration and
braking. The brakes may emit a sound when
they are being modulated by the adaptive
cruise control system. This is normal.
WARNING
The brake pedal moves when the adaptive
cruise control system modulates the
brakes. Do not rest your foot under the
brake pedal.
The adaptive cruise control system is designed
to follow the vehicle ahead of you in the same
lane, at a set time interval.
If the radar sensor has not detected a vehicle
ahead, the system will then attempt to maintain
the set speed. This is also the case if the speed
of the vehicle ahead exceeds the speed that
you have set.
The adaptive cruise control system is designed
to smoothly regulate speed. However, the
driver must apply the brakes in situations that
require immediate braking. This applies when
there are great differences in speed between
vehicles, or if the vehicle ahead brakes sud-
denly.
WARNING
Due to limitations in the radar sensor, brak-
ing may occur unexpectedly or not at all,
see page 168.
Adaptive cruise control can only be activated
at speeds above 20mph (30 km/h). If speed
falls below 20 mph (30 km/h) or if engine speed
(rpm) becomes too low, adaptive cruise control
disengages and will no longer modulate the
brakes. In situations when adaptive cruise con-
trol cannot be activated
Cruise Control
Unavailable
is shown in the display, see
page 170.
WARNING
When adaptive cruise control disengages,
the brakes will not be modulated automati-
cally. The driver must assume full control
over the vehicle.
Warning light-driver braking required
Adaptive cruise control has a braking capacity
that is equivalent to approximately 30% of the
vehicle's total braking capacity. In situations
requiring more brake force than ACC can pro-
vide, if the driver does not apply the brakes, an
audible signal will sound and a red warning
light will illuminate in the windshield to alert the
driver to react.
NOTE
Strong sunlight, reflections, extreme light
contrasts, the use of sunglasses, or if the
driver is not looking straight ahead may
make the visual warning signal in the wind-
shield difficult to see.
WARNING
Cruise control only warns of vehicles
detected by the radar sensor, see
page 168. In some cases there may be no
warning or the warning may be delayed. The
driver should always apply the brakes when
necessary.
04 Comfort and driving pleasure
Adaptive Cruise Control (ACC)*
04
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Option/accessory, for more information, see Introduction.
167
Operation
Controls and display
Activate and resume settings, increase
speed
Standby mode, on/off
Set time interval
Activate and set a speed
Set speed (parentheses indicate standby
mode)
Time interval while it is being set
Time interval after it has been set
Engaging the cruise control function
Before ACC can be used, it must first be put in
standby mode. To do so, press
. The symbol
illuminates in the display and (---) indicate
that ACC is in standby mode.
Setting a speed
Use the
or
buttons to store (set) the
vehicle's current speed. The set speed, for
example 55 mph, is shown in the display.
NOTE
Adaptive cruise control cannot be engaged
at speeds below 20 mph (30 km/h).
The “car” symbol illuminates
on the left side of the display
when the radar sensor
detects another vehicle
ahead. The distance to a vehi-
cle ahead is only regulated
when this symbol is illumi-
nated.
Adjusting the set speed
After a speed has been set, it can be increased
or decreased by using the
or
buttons.
When the system is in active mode, the
but-
ton has the same function as
, but results in
a smaller increase in speed.
NOTE
•
If one of the adaptive cruise control but-
tons is pressed for more than approxi-
mately one minute, ACC will be deacti-
vated. The engine must then be
switched off and restarted to reset ACC.
•
In some situations cruise control cannot
be activated.
Cruise Control
Unavailable
is shown in the display,
see page 170.
Setting a time interval
The set time interval to vehicles ahead is
increased with
and decreased with
. The
current time interval is shown briefly in the dis-
play following adjustment.
Five different time intervals
can be selected and are
shown in the display as 1–5
horizontal bars. The greater
the number of bars, the longer
the time interval. At low
speeds, when the distance to
the vehicle ahead is short, ACC increases the
time interval slightly. In order to follow the vehi-
cle ahead as smoothly as possible, ACC allows
the time interval to vary considerably in certain
situations.
04 Comfort and driving pleasure
Adaptive Cruise Control (ACC)*
04
168
*
Option/accessory, for more information, see Introduction.
WARNING
•
Only use a time interval that is suitable
in current traffic conditions.
•
A short time interval gives the driver lim-
ited reaction time if an unexpected sit-
uation occurs in traffic.
The number of bars indicating the selected
time interval are shown while the setting is
being made and for several seconds afterward.
A smaller version of the symbol is then shown
to the right in the display. The same symbol is
also displayed when Distance Alert is acti-
vated, see page 172 .
Deactivating and resuming settings
Cruise control is deactivated, either with a
short press on
, or by action taken by the
driver, such as braking, etc. The set speed, for
example 55 mph, is then shown in parenthe-
ses. Speed and time interval are resumed by
pressing
.
WARNING
There may be a significant increase in speed
after the
button has been pressed.
A short press on
in standby mode or a long
press in active mode deactivates cruise con-
trol. The set speed is then cleared and cannot
be resumed.
When ACC is activated, the vehicle’s speed
increases by approximately 1 mph (1 km/h)
each additional time
is pressed.
Deactivation due to action by the driver
ACC is deactivated:
•
when the brakes are applied
•
if the gear selector is moved to N
•
if the accelerator pedal is depressed for an
extended period.
NOTE
If the accelerator pedal is only depressed for
a short time, such as when passing another
vehicle, ACC is deactivated temporarily and
is reactivated when the pedal is released.
Automatic deactivation
Adaptive cruise control is linked to other sys-
tems such as ABS, the stability and traction
control system (DSTC), and the Distance Alert
System. If any of these systems are not func-
tioning properly, adaptive cruise control is
automatically deactivated.
In the event of automatic deactivation a signal
will sound and the message
Cruise Control
Canceled
is shown in the display. The driver
must then intervene and adapt the vehicle's
speed to the surrounding traffic.
Automatic deactivation may be caused if:
•
the vehicle's speed falls below 20 mph
(30 km/h)
•
the wheels lose traction or if the anti-lock
brake system (ABS) is activated
•
brake temperature is high
•
engine speed (rpm) is too low
•
the radar sensor is obstructed by, for
example, wet snow or rain.
The radar sensor and its limitations
The radar sensor is used by both Adaptive
Cruise Control and the Collision Warning Sys-
tem with Auto-brake. It is designed to detect
cars or larger vehicles driving in the same
direction as your vehicle.
WARNING
Accessories or other objects, such as extra
headlights, must not be installed in front of
the grille.
Modification of the radar sensor could make
its use illegal.
The radar sensor's capacity to detect vehicles
ahead is impeded:
04 Comfort and driving pleasure
Adaptive Cruise Control (ACC)*
04
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Option/accessory, for more information, see Introduction.
169
•
if the radar sensor is obstructed and can-
not detect other vehicles, for example in
heavy rain, or if snow or other objects are
obscuring the radar sensor.
NOTE
Keep the area in front of the radar sensor
clean.
•
if the speed of vehicles ahead is signifi-
cantly different from your own speed.
WARNING
The radar sensor has a limited field of vision.
In some situations it may detect a vehicle
later than expected or not detect vehicles at
all.
G021414
Radar sensor field of vision (gray)
In certain situations, the radar sensor can-
not detect vehicles at close quarters, for
example a vehicle that suddenly enters the
lanes between your vehicle and the one
that the system has already detected.
Small vehicles, such as motorcycles, or
vehicles not driving in the center of the lane
may remain undetected.
In curves, the radar sensor may detect the
wrong vehicle or lose a detected vehicle
from view.
Fault tracing and actions
If the message
Radar blocked See manual
is
displayed, this means that the radar signals
from the sensor have been obstructed and that
a vehicle ahead cannot be detected.
This, in turn, means that the functions of the
ACC, Distance Alert, and Collision Warning
System with Auto-brake will not function.
The table lists possible causes for this mes-
sage being displayed, and suitable actions.
Cause
Action
The surface of the radar in the grille is dirty or obstructed in some way.
Clean the radar surface, or remove the object causing the obstruction.
Heavy rain or snow is interfering with the radar signals.
No action possible. Heavy precipitation may affect the function of the
radar.
04 Comfort and driving pleasure
Adaptive Cruise Control (ACC)*
04
170
*
Option/accessory, for more information, see Introduction.
Cause
Action
Swirling water or snow from the surface of the road may interfere with
the radar signals.
No action possible. A very wet or snow-covered road surface may affect
the function of the radar.
The surface of the radar is clean but the message remains in the display.
Wait a short time. It may take several minutes for the radar to detect that
it is no longer obstructed.
Symbols and messages in the display
Symbol
Message
Description
-
Standby mode or active mode when no other vehicle has been detected.
-
Active mode with a detected vehicle to which ACC is adapting speed/distance.
-
Time interval while it is being set.
-
Time interval after it has been set.
-
Turn on DSTC
to enable Cruise
ACC cannot be activated until the stability system (DSTC) has been activated. see page 154 for more
information on DSTC.
-
Cruise control canceled
ACC has been automatically switched off.
The driver must regulate the vehicle’s speed/distance to the vehicle ahead.
-
Cruise control unavailable
ACC cannot be activated. This may be due to:
•
high brake temperature
•
the radar sensor is obstructed (by heavy rain, snow, etc.)
04 Comfort and driving pleasure
Adaptive Cruise Control (ACC)*
04
*
Option/accessory, for more information, see Introduction.
171
Symbol
Message
Description
Radar blocked
See manual
ACC has been temporarily disconnected because the radar is obstructed in some way and cannot
detect other vehicles.
see page 168 for information on the radar sensor’s limitations..
Cruise control
Service required
ACC is not functioning.
Contact a trained and qualified Volvo service technician.
04 Comfort and driving pleasure
Distance alert
04
172
Introduction
Distance Alert is part of Adaptive Cruise Con-
trol and is a function that provides information
about the time interval to the vehicle ahead.
Time interval information is only given for a
vehicle that is driving ahead of your vehicle, in
the same lane, and in the same direction. No
information is provided for vehicles driving
toward you, moving very slowly, or at a stand-
still.
G017362
A smaller section of the red warning light in the
windshield glows steadily if your vehicle is
closer to the vehicle ahead than the set time
interval.
NOTE
Distance Alert is in active mode while Adap-
tive Cruise Control is active.
Distance Alert is active at speeds above
approximately 20 mph (30 km/h).
WARNING
Distance Alert only indicates the distance to
the vehicle ahead. It does not affect the
speed of your vehicle.
Operation
Press the button in the center instrument
panel to switch this function on or off.
> The indicator light in the button illumi-
nates when the function is on.
Setting a time interval
The buttons for setting a time interval are
located on the left side of the steering wheel,
see the illustration on page 167 .
Press
to increase the interval or
to
decrease it.
Five different time intervals
can be selected and are
shown in the display as 1–5
horizontal bars. The greater
the number of bars, the longer
the time interval.
No. of bars
Approx. time interval
(in seconds)
1
1.0
2
1.4
3
1.8
4
2.2
5
2.6
The number of bars indicating the selected
time interval are shown while the setting is
being made and for several seconds afterward.
A smaller version of the symbol is then shown
to the right in the display. The same symbol is
04 Comfort and driving pleasure
Distance alert
04
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173
also displayed when Adaptive Cruise Control is
activated.
NOTE
•
The higher your vehicle’s speed, the
greater the distance to the vehicle
ahead, measured in feet (meters), for a
given time interval.
•
The set time interval is also used by
Adaptive Cruise Control, see page 167.
WARNING
Only use a time interval that is suitable in
current traffic conditions.
Limitations
The Distance Alert function uses the same
radar sensor used by Adaptive Cruise Control
and the Collision Warning system. See page
168 for more information on the radar sensor’s
limitations.
NOTE
Strong sunlight, reflections, extreme light
contrasts, the use of sunglasses, or if the
driver is not looking straight ahead may
make the visual warning signal in the wind-
shield difficult to see.
WARNING
•
Bad weather or winding roads may
affect the radar sensor’s capacity to
detect vehicles ahead.
•
The size of the vehicle ahead, such as a
motorcycle, may also make it difficult to
detect. This may result in the warning
light illuminating at a shorter distance
than the one that has been set, or that
the light will not come on at all.
Symbol
Message
Description
-
Time interval while it is being set.
-
Time interval after it has been set.
04 Comfort and driving pleasure
Distance alert
04
174
Symbol
Message
Description
Radar blocked
See manual
Distance Alert has been temporarily disconnected because the radar is obstructed in some way and
cannot detect other vehicles. See page 168 for information on the radar sensor’s limitations.
Collision warn.
Service required
Distance Alert or Collision Warning with Auto-brake is not functioning properly. Contact a trained and
qualified Volvo service technician.
04 Comfort and driving pleasure
Driver Alert System*
04
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Option/accessory, for more information, see Introduction.
175
Introduction
The Driver Alert System is designed to help a
driver who may be becoming fatigued or who
is inadvertently leaving the lane.
The Driver Alert System consists of two differ-
ent functions that can be switched on together
or separately.
•
Driver Alert Control (DAC)
•
Lane Departure Warning (LDW)
When one or both of the functions has been
switched on, it is in standby mode and is acti-
vated when the vehicle exceeds a speed of
40 mph (65 km/h).
The function deactivates if speed goes under
37 mph (60 km/h).
Both functions use a camera that is dependent
on the road/lane being clearly marked by pain-
ted lines on each side.
WARNING
The Driver Alert system does not function in
all situations and is designed to be a sup-
plementary aid. It is not, however, intended
to replace the driver’s attention and judge-
ment.
Driver Alert Control (DAC)–general
information
G017332
This function is intended to alert the driver if
his/her driving becomes erratic, such as if the
driver is distracted or fatigued.
NOTE
The camera has certain limitations, see
page 161.
A camera monitors the painted lines marking
the lane in which the vehicle is traveling and
compares the direction of the road with the
driver’s movements of the steering wheel. The
driver is alerted if the vehicle does not follow
the lane smoothly.
DAC is designed to help detect a slowly chang-
ing driving pattern. It is primarily intended to be
used on main roads and is not meant for use in
city traffic.
WARNING
•
DAC is not intended to extend the dura-
tion of driving. Always plan breaks at
regular intervals to help remain alert.
•
In certain cases, fatigue may not affect
the driver’s behavior. In situations of
this type, no warning will be provided.
Therefore, it is important to take breaks
at regular intervals, regardless of
whether or not DAC has given a warn-
ing.
Limitations
In certain situations, DAC may provide warn-
ings even if the driver’s driving pattern has not
become erratic.
•
if the driver is testing the LDW function
•
in strong crosswinds
•
on grooved road surfaces.
04 Comfort and driving pleasure
Driver Alert System*
04
176
*
Option/accessory, for more information, see Introduction.
Operating DAC
Certain settings can be made from the menu
system controlled from the center instrument
panel, see page 120 for more information on
the menu system.
The current system status can be checked on
the trip computer’s display by using the but-
tons on the left steering wheel lever.
Thumb wheel. Turn this wheel until
Driver
Alert
is displayed. The second line shows
the alternative
Off,
Unavailable
, or
[-----]
, i.e., the number of bars.
READbutton. Confirms and erases a mes-
sage in the display.
Activating DAC
In the center instrument panel, go to
Car
settings
Driver Alert
and select
On
.
The function is activated when the
vehicle exceeds a speed of 40 mph
(65 km/h). The display will show level
markings of 1–5 bars, where a low
number of bars indicates erratic driving. A high
number of bars indicates stable driving.
If the vehicle is being driven erratically, the
driver will be alerted by an audible signal and
the message Driver Alert, Time for a break is
displayed. The warning will be repeated after a
short time if the driving pattern remains the
same.
WARNING
•
An alert should be taken seriously since
it is sometimes difficult for a driver to
realize that he/she is fatigued.
•
In the event of a warning or if the driver
feels fatigued, stop as soon as possible
in a safe place and rest.
04 Comfort and driving pleasure
Driver Alert System*
04
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Option/accessory, for more information, see Introduction.
177
Symbols and messages in the display
Symbol
Message
Description
-
Driver Alert
OFF
The function is not switched on.
-
Driver Alert
Unavailable
The vehicle’s speed is below 37 mph (60 km/h) or the road lacks clear marking lines.
Driver Alert
The function is analyzing the driver’s driving pattern. The number of bars varies from 1–5, where a low
number of bars indicates erratic driving. A high number of bars indicates stable driving.
Driver Alert
Time for a break
The vehicle has been driven erratically. The driver receives an audible signal and a text message.
Camera blocked
See manual
The camera is temporarily not functioning, due to snow, ice, or dirt on the windshield. Clean the area
of the windshield in front of the camera. See page 161 for information on the camera’s limitations.
Driver Alert Sys
Service required
The system is not functioning. Contact a trained and qualified Volvo service technician if the message
remains in the display.
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