2014 VOLVO XC70 wheel

04 Driver support
Adaptive Cruise Control (ACC)*
04
148* Option/accessory, for more information, see Introduction.
Introduction
Adaptive Cruise Control (ACC) is an optional system designed to assist the driver by main-taining a set speed or a set time interval tothe vehicle ahead. It is primarily intended foruse on long straight roads in steady traffic,such as on highways and other main roads. When the driver has set the desired speed and the time interval to the vehicle ahead,ACC functions as follows:
• If there are no other vehicles in the lane ahead of you, your vehicle will travel atthe set speed.
• If ACC's radar sensor detects a slowermoving vehicle in the lane ahead, the sys-tem will adapt your vehicle's speed tohelp maintain the set time interval to thevehicle ahead. When there are no longerslower moving vehicles ahead, your vehi-cle will accelerate to resume the setspeed.
If ACC is switched off completely or in standby mode and your vehicle comes tooclose to another vehicle ahead, the driver willbe warned by the Distance Alert system (seepage 159).WARNING
• Adaptive Cruise Control cannot cover all driving situations and traffic,weather and road conditions. The"Function" section provides informa-tion about limitations that the drivermust be aware of before using thisfeature.
• This system is designed to be a sup-plementary driving aid. It is not, how-ever, intended to replace the driver'sattention and judgement. The driver isresponsible for maintaining a safe dis-tance and speed and must intervene ifAdaptive Cruise Control does notmaintain a suitable speed or suitabledistance to the vehicle ahead.
• Maintenance of ACC components mayonly be performed by a trained andqualified Volvo technician.
Function
Function overview 1
Warning light, braking by driver required
Controls in steering wheel
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 thevehicle ahead, which is expressed as atime interval. For example, you canchoose to remain approximately 2 sec-onds behind the vehicle ahead. Theactual distance required to maintain a
1
The illustration is generic; details will vary, depending on the model

04 Driver support
Adaptive Cruise Control (ACC)*
04
152* Option/accessory, for more information, see Introduction.
Standby mode (temporary deactivation)To temporarily deactivate ACC (put it in standby mode):
• Press
.
This symbol and the marking for the set speed with change colors from green to
white. The previously set speed and time interval are resumed by pressing
.
WARNING
The vehicle may accelerate quickly after
has been pressed if its current speed is
considerably lower than the set speed.
Standby mode due to action by the driver
ACC is temporarily deactivated and put in standby mode:
• if the brakes are applied
• if the gear selector is moved to
N
• if the driver drives faster than the set speed for more than
1 minute.
In this happens, the driver will have to regu- late the vehicle's speed.
NOTE
If the accelerator pedal is only depressed for a short time, such as when passinganother vehicle, ACC is deactivated tem-porarily and is reactivated when the pedalis released.
Automatic standby modeACC is linked to other systems such as the stability and traction control system (DSTC). Ifthis system is not functioning properly, ACCwill switch off automatically. In the event of automatic deactivation, an audible signal will sound and the message
Cruise control Cancelled is shown in the
instrument panel. The driver must then inter- vene and adapt the vehicle's speed to thesurrounding traffic and regulate the distanceto the vehicle ahead. An automatic switch to standby mode may be caused if:
• engine speed (rpm) is too high/low
• The driver's door is opened
• The driver unbuckles his/her seat belt
• the vehicle's speed goes below 18 mph (30 km/h) 4
• the wheels lose traction •
brake temperature is high
• the radar sensor is obstructed by, for example, wet snow or rain.
Resuming the set speedIf ACC is in standby mode, it can be reactiva- ted by pressing the
button on the steering
wheel keypad. The vehicle will return to the most recently set speed.
WARNING
The vehicle may accelerate quickly after
has been pressed if its current speed is
considerably lower than the set speed.
Passing another vehicleIf your vehicle’s speed is being regulated by ACC and the driver indicates that he/shewould like to pass the vehicle ahead by usingthe left turn signal, ACC can assist by accel-
erating briefly. This function is active at speeds above approximately 45 mph (70 km/h).
4 Does not apply to vehicles equipped with the optional Queue Assist

04 Driver support
Collision warning with Full Auto-brake and Pedestrian Detection*
04
* Option/accessory, for more information, see Introduction.171
console control panel and going to
Settings
Car settingsDriver support systems
Collision Warning.
Maintenance
Camera and radar sensor
1
.
In order to function properly, the camera and laser sensor must be kept clean. Dirt, ice,snow, etc., will reduce the function of thesecomponents. Remove ice and snow when necessary and wash these areas regularly with a suitable carwashing liquid.
Limitations
Strong sunlight, reflections, extreme light contrasts, the use of sunglasses, or if thedriver is not looking straight ahead may makethe visual warning signal in the windshield dif-ficult to see. For this reason, always activatethe audible warning signal. Slippery driving conditions increase braking distance, which can reduce the system'scapacity to avoid a collision. In these condi-tions, the ABS and DSTC systems providethe best possible braking effect while helpingto maintain stability.
NOTE
The visual warning signal may be tempo- rarily disengaged in the event of high pas-senger compartment temperature due tostrong sunlight, etc. If this occurs, theaudible warning signal will be used, even ifit has been deactivated in the menu sys-tem.
WARNING
• In certain situations, the system can- not provide warnings or warnings maybe delayed if traffic conditions or otherexternal factors make it impossible forthe radar sensor or camera to detect apedestrian or a vehicle ahead.
• Warnings may not be provided if thedistance to the vehicle ahead is short,or if movements of the steering wheel/brake pedal are great, such as duringactive driving.
• The sensor system has a limited rangefor pedestrians and provides warningsand braking effect most effectively atspeeds up to 30 mph (50 km/h). Forstationary or slow-moving vehicles, thesystem functions best if your vehicle’sspeed is below approximately 45 mph(70 km/h).
• Warnings for stationary or slow-mov-ing vehicles may not be provided indark conditions or in poor visibility.
The Collision Warning system uses the same radar sensors as Adaptive Cruise Control. Formore information on the radar sensor and itslimitations, see page 155.
1
The illustration is generic; details will vary, depending on the model

04 Driver support
Driver Alert System*
04
176* Option/accessory, for more information, see Introduction.
Introduction
The Driver Alert System is designed to help a driver who may be becoming fatigued or whois inadvertently leaving the lane. The Driver Alert System consists of two differ- ent functions that can be switched ontogether or separately.
• Driver Alert Control (DAC)
• Lane Departure Warning (LDW)
, see
page 179
When one or both of the functions has beenswitched on, it is in standby mode and is acti-vated when the vehicle exceeds a speed of40 mph (65 km/h). The function deactivates if the vehicle's speed goes under 37 mph (60 km/h). Both functions use a camera that is depend- ent on the road/lane being clearly marked bypainted lines on each side.
WARNING
The Driver Alert System does not function in all situations and is designed to be asupplementary aid. It is not, however,intended to replace the driver’s attentionand judgement.
Driver Alert Control (DAC)– introduction
This function is intended to alert the driver if his/her driving becomes erratic, such as if thedriver is distracted or fatigued.
NOTE
The camera has certain limitations, see page 155.
A camera monitors the painted lines marking the lane in which the vehicle is traveling andcompares the direction of the road with thedriver’s movements of the steering wheel.The driver is alerted if the vehicle does notfollow the lane smoothly. DAC is designed to help detect a slowlychanging driving pattern. It is primarilyintended to be used on main roads and is notmeant for use in city traffic.
WARNING
•
DAC is not intended to extend the duration of driving. Always plan breaksat regular intervals to help remain alert.
• In certain cases, fatigue may not affectthe driver’s behavior. In situations ofthis type, no warning will be provided.Therefore, it is important to takebreaks at regular intervals, regardlessof whether or not DAC has given awarning.
LimitationsIn certain situations, DAC may provide warn- ings even if the driver’s driving pattern hasnot become erratic.
• if the driver is testing the LDW function
• in strong crosswinds
• on grooved road surfaces.

04 Driver support
Driver Alert System*
04
180* Option/accessory, for more information, see Introduction.
WARNING
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 isbetween the wheels.
Limitations
The camera used by LDW has the same limi- tations as the human eye. See page172 for
more information about the camera's limita-tions.
NOTE
No warning signal will be given in the cer-
tain situations, such as:
• If the turn signal is being used
• The driver’s foot is on the brake pedal 1
• The accelerator pedal is pressed quickly 1
• If the steering wheel is moved quickly 1
• In sharp turns that cause the vehicle’s body to sway
Settings
Settings for Lane Departure Warning can be made in the menu system by pressing
My
Car . Go to
SettingsCar settings
Driver support systemsLane Departure
Warning.
There are two alternatives:
On at start-up: This selection switches LDW
on each time the engine is started. Otherwise, the system will be in the mode that it was inwhen the engine was switched off.
Increased sensitivity: This selection increa-
ses the function’s sensitivity. Warnings will be given at an earlier stage and fewer limitationsapply. When this setting is being used, thesystem only needs to monitor lane markerlines on one side of the vehicle to change sta- tus to
Lane Depart Warn Available.
1 When Increased sensitivity has been selected, a warning will be issued if a side marker line is crossed in this situation.

04 Driver support
Rear Park Assist Camera (PAC)*
04
186* Option/accessory, for more information, see Introduction.
Introduction
The Park Assist Camera uses the display in the center console to show the area behindthe car while you are backing up. PAC also shows guiding lines in the on- screen image to indicate the direction that thevehicle will take as it moves rearward, whichhelps simplify parallel parking, backing into atight space or when attaching a trailer to thevehicle.
NOTE
A trailer hitch whose wiring is integrated with the vehicle's electrical system will beincluded in the measurement of the availa-ble space behind the vehicle.
WARNING
• PAC is designed to be a supplemen- tary aid when parking the vehicle. It isnot, however, intended to replace thedriver’s attention and judgment.
• The camera has blind spots where itcannot detect objects or peoplebehind the vehicle.
• Pay particular attention to people oranimals that are close to the vehicle.
Function
The driver sees what is behind the vehicle and if a person or animal should suddenlyappear from the side. PAC is mounted on the tailgate, near the opening handle. The camera has built-in electronics that help reduce the “fish-eye” effect so that the imageshown on the screen is as natural as possi-ble. This may cause some objects on thescreen to “lean,” which is normal.
WARNING
Objects seen on the screen may be closer than they appear to be.
Ambient lighting conditionsThe camera automatically monitors the ambi- ent lighting conditions behind the vehicle andconstantly adjusts sensitivity to light. Thismay cause the brightness and quality of theimage on the screen to vary slightly. Sensitiv-ity to light is increased in dark conditions or inbad weather, which may affect image quality. If the image on the screen seems too dark, brightness can be increased with the thumbwheel on the lighting panel.
NOTE
In order to function properly, the camera lens should always be kept clean. This isparticularly important in bad weather.Keep the lens free of dirt, ice or snow.

04 Driver support
Rear Park Assist Camera (PAC)*
04
* Option/accessory, for more information, see Introduction.187
Using PAC
Activation
PAC is activated when the gear selector is moved to R if the system is selected in the
MY CAR menu system or by pressing the
CAM button in the center console. See page
199 for a description of the menu system. If the Volvo Navigation System (VNS) is in use, PAC will automatically override the navi-gation system to show the camera's imageon the screen instead of navigation informa-tion, for as long as reverse gear is selected.
DeactivationMove the gear selector from R to another
position. There is a slight delay in the PACsystem, which means that the view from behind the vehicle will remain on the screenfor approximately 15 seconds after the gearselector has been moved from the
R position
or until the vehicle reaches a forward speedof 6 mph (10 km/h). The screen will thenrevert to the mode that it was in before R was
selected and will, for example, display navi-gation system information.
NOTE
If any button on the center console control panel is pressed, the camera image willdisappear from the display. Pressing CAM
will return the camera image to the display.
Guiding lines
The lines on the screen are projected as if they were a path on the ground behind the vehicle and are affected by the way in whichthe steering wheel is turned. This enables thedriver to see path the vehicle will take, even ifhe/she turns the steering wheel while backingup.
NOTE
When backing up with a trailer, the guiding lines show the path that the
vehicle will
take, not the trailer.
WARNING
Keep in mind that the image on the screen only shows the area behind the vehicle.The driver must always watch for people,animals, other vehicles, etc., near the sidesof the vehicle when turning while backingup.

04 Driver support
Rear Park Assist Camera (PAC)*
04
188* Option/accessory, for more information, see Introduction.
Marker lines
The PAC system's lines
Marker line for a 1-foot (30-centimeter) zone behind the vehicle
Marker line for the clear back-up zone
"Wheel tracks"
The solid line (1) indicates a zone within 1 ft (30 centimeters) of the rear bumper. The dashed line (2) indicates the clear zone of approximately 5 feet (1.5 m) behind thebumper. These lines also indicate the out-most limits that any object (door mirrors, cor-ners of the body, etc.) extends out from thevehicle, even when it turns. The "wheel tracks" (3) between the side marker lines show where the wheels will rolland can extend up to approximately 10.5 ft (3.2 m) behind the bumper if there are noobjects in the way.
Vehicles equipped with Park Assist
Colored fields (4-one per sensor) indicate dis- tance If the vehicle is equipped with the optional Park Assist system, the distance to an objectwill be indicated more exactly and coloredmarkers in the display indicate which of thesensor(s) has detected the object. The markers change color (from yellow to orange to red) as the vehicle comes closer tothe object.
Marker (color)Distance to object
Yellowmore than 5 ft (1.5 m)
Orange5–1 ft (0.3–1.5 m)
Red0–1 ft (0–0.3 m)
SettingsPress
OK/MENU when a normal camera view
is displayed and make the desired settings.
Parking camera settings
• Mark Guide lines to display the sidelines
while backing up.
• Mark
Distance bars to display the inter-
secting lines while backing up.
Activating the system
• Mark Automatic activation of rear
camera to activate PAC each time
reverse gear is selected.
• Mark
Off to turn off PAC completely.
Summary
•The camera is activated when the gear selector is moved to
R (this can be
changed in the MY CAR menu) and the
image is shown on the center consoledisplay.
• When backing up, two solid lines are pro-jected on the screen to show the paththat the vehicle's rear wheels will take.