2014 VOLVO XC70 Owner´s Manual

04 Driver support
Stability system
04
143
Symbols and messages in the main instrument panel
SymbolMessageDescription
DSTC Temporarily OFFThe DSTC system function has been temporarily reduced due to high brake disc temperature. DSTC reactivates automatically when the brakes have cooled.
DSTC Service requiredThe DSTC system is not functioning properly.
• Stop the vehicle in a safe place, turn off the engine and restart it.
• If the message is still displayed when the engine has restarted, drive to an authorized Volvo work- shop to have the system inspected.
and
"Message"Read the message in the instrument panel
Steady glow for 2 secs.The system is performing a self-diagnostic test.
Flashing symbolDSTC is actively functioning to help counteract wheel spin and/or a skid.
-Sport
mode has been activated.
WARNING
The stability system is intended to help improve driving safety. It supplements, butcan never replace, the driver's judgmentand responsibility when operating the vehi-cle. Speed and driving style should alwaysbe adapted to traffic and road conditions.

04 Driver support
Road sign information (RSI)*
04
144* Option/accessory, for more information, see Introduction.
Introduction
Examples of readable road signs Road Sign Information (RSI) is a feature that helps the driver see road signs with the pos-ted speed limit. If the vehicle passes a sign showing the speed limit, this will be displayed in the centerconsole.
WARNING
RSI does not function in all situations and is only intended to provide supplementaryinformation. The driver is always responsible for oper- ating the vehicle safely.
Operation
Speed limit information
When RSI registers a road sign showing the speed limit, this sign is displayed as a symbolon the instrument panel.
Settings in MY CAR
Possible settings in MY CAR Displaying the speed limit indication can be deactivated. To do so:
• Deselect the alternative in
MY CAR
SettingsCar settingsRoad Sign
Information or cancel by pressing EXIT.
Speed alertThe driver can opt to be alerted if the vehicle exceeds the posted speed limit by more than3 mph (5 km/h). The alert is given when thesymbol with the posted speed limit in theinstrument panel begins to flash. To activate speed alert:
• Check the Speed alert box in
MY CAR
SettingsCar settingsSpeed alertor cancel by pressing EXIT.
Limitations
RSI's camera has the same limitations as the human eye. See page 172 for more informa-tion about the camera's limitations. Signs that indirectly indicate the speed limit (such as a sign with a town's name and thepermitted speed limit) will not be registeredby RSI. Other factors that may interfere with RSI include:
• Faded signs
• Signs located in a curve

04 Driver support
Road sign information (RSI)*
04
* Option/accessory, for more information, see Introduction.145
•
Twisted or damaged signs
• Obstructed signs
• Signs that are partially covered by snow, ice, etc.

04 Driver support
Cruise control
04
146
Operation
Steering wheel-mounted controls and display
Standby mode
Resume set speed
Deactivating
Activate/set speed
Selected speed (gray symbol indicates
standby mode)
Cruise control active: white symbol ( gray
symbol indicates standby mode)
Engaging the cruise control functionBefore a speed can be set, the cruise control system must be engaged (put in standbymode).
–Press the CRUISE button (1).
> The symbol
illuminates and the text
(---) mph (5) indicates that cruise con-
trol is in standby mode.
NOTE
• Putting cruise control in standby mode does not set a cruising speed.
• When cruise control is in standbymode, the driver's seat belt must befastened before a cruising speed canbe set.
Setting a speed
Use the or buttons set the vehicle's
current speed. The set speed is shown in the display.
NOTE
Cruise control cannot be engaged at speeds below 20 mph (30 km/h).
Adjusting the set speedAfter a speed has been set, it can be increased or decreased by using the
or buttons. 1. Press and hold down
or until the
vehicle reaches the desired speed.
> This will become the set speed when the button is released.
2. Press
or for approximately a half
second and release the button to increase or decrease vehicle speed byapproximately 1 mph (1.6 km/h).
NOTE
• A temporary increase in speed by pressing the accelerator pedal, for lessthan 1 minute (e.g. when passinganother car), does not affect the cur-rent cruise control setting. The vehiclewill automatically return to the previ-ously set speed when the acceleratorpedal is released.
• If one of the cruise control buttons iskept depressed for more than approx.1 minute cruise control is disengaged.The engine must then be switched offin order to reset cruise control.

04 Driver support
Cruise control
04
147
Automatic deactivationCruise control is automatically deactivated temporarily if one of the following occurs:
• If the speed drops below approximately 20 mph (30 km/h).
• When the brake pedal is depressed.
• If the gear selector is moved to positionN.
• During wheel spin or wheel lock-up.
• If the vehicle's speed is increased byusing the accelerator pedal for more than1 minute.
The currently set speed will be saved in the system's memory.
Temporary deactivationThe driver can temporarily deactivate cruisecontrol by pressing 0. The saved speed is
shown in brackets in the information display.
Resume set speedIf cruise control has been deactivated tempo- rarily, it can be reactivated by pressing
.
The vehicle's speed returns to the most recently set speed.
WARNING
There may be a significant increase in speed after the
button has been
pressed.
Deactivation
Cruise control is disengaged by pressing or by switching off the engine. The set speed is cleared.
WARNING
Cruise control should not be used in heavy traffic or when driving on wet or slipperyroads. Cruise control may not maintain setspeed on steep downgrades.

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
* Option/accessory, for more information, see Introduction.149
2-second interval will vary according the speed of the vehicles.
WARNING
•
Adaptive Cruise Control is not a colli- sion avoidance system. The driver isalways responsible for applying thebrakes if the system does not detectanother vehicle.
• Adaptive Cruise Control does not reactto people or animals, or small vehiclessuch as bicycles and motorcycles. Italso does not react to slow moving,parked or approaching vehicles, orstationary objects.
• Do not use Adaptive Cruise Control indemanding driving conditions such ascity driving or other heavy traffic situa-tions, in slippery conditions, whenthere is a great deal of water or slushon the road, during heavy rain orsnow, in poor visibility, on windingroads or on highway on- or off-ramps.
The distance to the vehicle ahead (in the same lane) is monitored by a radar sensor.Your vehicle's speed is regulated by acceler-ating and braking. The brakes may emit asound when they are being modulated by the adaptive cruise control system. This is nor-mal.
WARNING
The brake pedal moves when the adaptive cruise control system modulates thebrakes. Do not rest your foot under thebrake pedal.
The ACC system is designed to smoothly regulate speed. However, the driver mustapply the brakes in situations that requireimmediate braking. This applies when thereare great differences in speed between vehi-cles, or if the vehicle ahead brakes suddenly.
WARNING
Due to limitations in the radar sensor, braking may occur unexpectedly or not atall, see page 155.
Adaptive Cruise Control can be put in active mode at any permitted speed. However, if thevehicle's speed falls below 18 mph (30 km/h)or if engine speed (rpm) becomes too low,ACC disengages (goes into standby mode) and will no longer modulate the brakes
2
. The driver will then have to maintain a safe dis- tance to the vehicle ahead.
WARNING
When Adaptive Cruise Control is in standby mode or is switched off com-pletely, the brakes will not be modulatedautomatically. The driver must assume fullcontrol over the vehicle.
Warning light—driver braking requiredAdaptive Cruise Control can exert brake force that is equivalent to approximately 40% ofthe vehicle's total braking capacity. In situa-tions requiring more brake force than ACCcan provide and if the driver does not applythe brakes, an audible signal from the Colli-sion Warning system will sound and warninglight will illuminate (see page 169) in thewindshield to alert the driver to react.
NOTE
Strong sunlight, reflections, extreme light contrasts, the use of sunglasses, or if thedriver is not looking straight ahead maymake the visual warning signal in the wind-shield difficult to see.
2
Does not apply to vehicles with the optional Queue Assist.

04 Driver support
Adaptive Cruise Control (ACC)*
04
150* Option/accessory, for more information, see Introduction.
WARNING
Adaptive Cruise Control only warns of vehicles detected by the radar sensor, seepage 155. In some cases there may be nowarning or the warning may be delayed.The driver should always apply the brakeswhen necessary.
Steep inclines and/or heavy loadsACC is primarily intended for use on fairly level roads. The system may have difficultymaintaining the correct distance to a vehicleahead on steep inclines, if the vehicle is car-rying a heavy load or is towing a trailer. Inthese situations, the driver should always beprepared to apply the brakes if necessary.
Operation
Controls and display
Resume previous settings.
Off/On/Standby mode
Decrease/increase time interval
Put in active mode and set a speed (each additional press increases/decreasesspeed by 1 mph (approximately 2 km/h))
Set speed (shown in green when active,
shown in white when in standby mode)
Time interval
ACC active ( green symbol) or in standby
mode ( white symbol)
Putting ACC in standby modeBefore ACC can be used to regulate speed and/or the distance to a vehicle ahead, itmust first be put in standby mode. To do so:
• Press
(2).
> The same symbol (7) appears (in white) in
the instrument panel to indicate that ACC is in standby mode.
NOTE
The driver's door must be closed and the driver's seat belt must be fastened beforeACC can be put in active mode. If the driv-er's seat belt is taken off or if the driver'sdoor is opened, ACC will return to standbymode.
Setting a speedOnce ACC has been put in standby mode: • Press
or (4).
> The set speed, for example 60 mph (5), will be magnified for several seconds and the frame around the speed will changecolors from white to green to indicate
that this speed has been stored (set).