VOLVO V70 2008 Owners Manual
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on the camera  or cause these systems to temporarily stop functioning.
 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,  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 Camera blocked See  manual  is displayed, this  means that the camera  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 functionality.
The table  lists possible causes for this  message being displayed, and  suitable actions.
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Collision Warning with Auto-brake (option)
Symbols and messages in the display
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Driver Alert System -option
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 different  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 activated 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 painted  lines on each side.
 WARNING 
The Driver Alert system does not function in all situations and  is designed to be  a  supplementary aid. It is not,
however,  intended  to replace  the driver's attention and  judgement.
Driver Alert Control (DAC)-general information
This function is intended  to alert the driver if his/her driving becomes erratic, such as if the driver is distracted or
fatigued.
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.
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 NOTE 
The camera  has certain limitations, see page 170.
DAC is designed to help detect a  slowly changing 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 duration 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
warning
Limitations
In certain situations, DAC may provide warnings 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.
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Driver Alert System -option
Operating DAC
Certain  settings can be  made from  the menu system controlled from  the center  instrument panel. See  page 124
 for
more information on the menu system.
The current system status can be  checked on the trip computer's display by using the buttons  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.
READ button. Confirms and  erases  a  message in the display.
Activating  DAC
In the center  instrument panel, go to Car  settings 
 Driver Alert . Select  On.
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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.
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Driver Alert System -option
Symbols and messages in the display
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Driver Alert System -option
Lane Departure  Warning (LDW)-general information
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This function is designed to help reduce the risk of accidents in situations where  the vehicle leaves its  lane and  there is
a  risk of driving off the road or into the opposite lane.
LDW consists of a  camera  that monitors the lane's side marker lines. The driver is alerted by an  audible  signal if the
vehicle crosses a  side marker line or the road's center  dividing line.
Operation and function
LDW can be  switched on or off by pressing the button on the center  console. A light in the button illuminates  when the
function is on.
The trip computer display shows  Lane  Depart Warn Unavailable when the function is in standby mode.
When LDW is in standby mode, the function is activated automatically  after the camera  has monitored the road's side
marker lines and  the vehicle's speed exceeds 40 mph (65 km/h). Lane Depart Warn Available  will be  displayed.
If the camera  can no longer monitor the road's side marker lines, or if the vehicle's speed falls below  37 mph (60
km/h), LDW will return to standby mode and  Lane Depart Warn Unavailable  will be  displayed.
If the vehicle unexpectedly crosses the lane's left or right side marker lines, the driver will be  alerted by an  audible
signal.
No warning signal  will be  given in the following situations:
 The turn signal is being used
 The driver's foot is on the brake pedal1
 The throttle pedal is pressed quickly
 If the steering wheel is moved quickly
 In sharp turns that cause the vehicle's body to sway.
The camera  also has certain limitations. See  page 170
 for information.
 WARNING 
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The driver will only be  warned  once for each time the wheels cross a  marker line. No alarm will be  given if a  marker
line is between the wheels.
1A warning will  be  given even when  Increased sensitivity has  been selected.  See page 125 for  more information
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Driver Alert System -option
Symbols and messages in the display
Settings
Settings for Lane Departure Warning can be  made in the menu system under Car  settings 
 Lane Departure Warning.
See  page 124
 for more information on the menu system.
On at startup: This selection puts the function in standby mode each time the engine is started. Otherwise, the system
will be  in the mode that it was in when the engine was switched off.
Increased sensitivity:  This selection increases the function's sensitivity. Warnings will be  given at an  earlier stage and
fewer limitations apply.
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Park assist (option)
Introduction
The park assist system is designed to assist you when driving into parking spaces, garages, etc. It utilizes four
ultrasound sensors  located in one  or both bumpers  to measure the distance to a  vehicle, object,  or a  person who may
be  close to the front  or rear of your vehicle.
This system is available in the rear bumper only, or in both the front  and  rear bumpers.
Park assist utilizes four ultrasound sensors  in the bumper(s) to measure the distance to a  vehicle, object,  or a  person
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who may be  close to the front  or rear of your vehicle. An audible  signal and  symbols in the audio system's display
indicate the distance to the object.
 WARNING 
Park Assist  is an  information system, NOT a  safety system. This system is designed to be  a  supplementary aid when
parking the vehicle. It is not, however,  intended  to replace  the driver's attention and  judgement.
Function
The system is activated automatically  when the vehicle is started. The indicator light in the button in the center  console
illuminates  when the system is on.
 The front  park assist system is active from  the time the engine is started until the vehicle exceeds a  speed of
approximately 10 mph (15 km/h). It is also active when the vehicle is backing up.
 Rear park assist is active when the engine is running and  reverse  gear has been selected.
Activating/deactivating
The system is activated automatically  when the vehicle is started.
 Press the Park assist button on the center  console to temporarily deactivate the system(s). The indicator light in the
button will go out when the system has been deactivated.
 Park assist will be  automatically  reactivated  the next time the engine is started, or if the button is pressed (the
indicator light in the button will illuminate).
 NOTE 
 Front park assist is disengaged automatically  when the parking brake is applied.
 If the vehicle is equipped with front  and  rear park assist, both systems will be  deactivated by pressing the button.
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Park assist (option)
Signals from the park assist system
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Visual indicator 
The audio system's display gives an  overview of the vehicle's position in relation to a  detected object.
The markers in the display indicate that one  or more of the four sensors  has detected an  object.  The greater the number
of markers, the closer the vehicle is to the object.
 Display in a  vehicle with rear park assist only. Here,  an  object  has been detected by both of the right rear sensors.
 Display in a  vehicle with both front  and  rear park assist. The solid  marker in this  example indicates that an  object  is
closer than approximately 1 foot (30 cm) to the right front  sensor.
 Display in a  vehicle with both front  and  rear park assist. Reverse gear is selected and  no objects have been detected
in front  of or behind the vehicle.
Audible signal
The Park Assist  system uses an  intermittent tone that pulses faster as you come close to an  object,  and  becomes
constant when you are within approximately 1 ft (30 cm) of an  object  in front  of or behind the vehicle (example 2 in
the illustration). If there are objects within this  distance both behind and  in front  of the vehicle, the tone alternates
between front  and  rear speakers.
If the volume of another source from  the audio system is high, this  will be  automatically  lowered.
Rear park assist  
The distance monitored behind the vehicle is approximately 5 ft (1.5 m). The audible  signal comes from  the rear
speakers.
The system must  be  deactivated when towing a  trailer, carrying bicycles in a  rear-mounted carrier, etc, which  could
trigger the rear park assist system's sensors.
 NOTE 
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Rear park assist is deactivated automatically  when towing a  trailer if Volvo genuine trailer wiring is used.
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Park assist (option)
Front  park assist
The distance monitored in front  of the vehicle is approximately 2.5 ft (0.8 m). The audible  signal comes from  the audio
system's front  speakers.
It may not be  possible to combine  auxiliary headlights and  front  park assist since these lights could trigger the system's
sensors.
Faults in the system
If the information symbol  illuminates  and  Park Assist  syst Service required is shown on the information display, this
indicates that the system is not functioning properly and  has been disengaged. Consult a  trained and  qualified Volvo
service technician.
 CAUTION 
In certain circumstances, the park assist system may give unexpected warning signals that can be  caused by external
sound sources that use the same ultrasound frequencies as the system. This may include  such things  as the horns of
other vehicles, wet  tires on asphalt, pneumatic brakes, motorcycle exhaust pipes, etc. This does not indicate a  fault in
the system.
Cleaning the sensors
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The sensors  must  be  cleaned regularly to ensure that they work properly. Clean them with water and  a  suitable car
washing detergent.
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Park assist (option)
Ice and  snow covering the sensors  may cause incorrect warning signals.
 NOTE 
If the sensors  are obstructed by e.g.,  dirt, snow, or ice, this  could result in false warning signals from  the park assist
system.
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Blind Spot Information System  (option)
Introduction
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