2015 VOLVO XC70 cooling

03 Your driving environment
Brakes
03
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The adaptive brake lights activate if: •The ABS system activates for more than approximately a half second
• In the event of sudden braking while thevehicle is moving at speeds aboveapproximately 6 mph (10 km/h)
When the vehicle has come to a stop, the brake lights and additional taillights remain onfor as long as the brake pedal is depressed oruntil braking force on the vehicle is reduced.
Power brakes function only when the engine is running
The power brakes utilize vacuum pressure which is only created when the engine is run-ning. Never let the vehicle roll to a stop withthe engine switched off. If the power brakes are not working, consid- erably higher pressure will be required on thebrake pedal to compensate for the lack ofpower assistance. This can happen for exam-ple when towing your vehicle or if the engineis switched off when the vehicle is rolling. Thebrake pedal feels harder than usual.
Water on brake discs and brake pads affects braking
Driving in rain and slush or passing throughan automatic car wash can cause water tocollect on the brake discs and pads. This willcause a delay in braking effect when the pedal is depressed. To avoid such a delaywhen the brakes are needed, depress thepedal occasionally when driving through rain,slush, etc. This will remove the water from thebrakes. Check that brake application feelsnormal. This should also be done after wash-ing or starting in very damp or cold weather.
Severe strain on the brake systemThe brakes will be subject to severe strainwhen driving in mountains or hilly areas, orwhen towing a trailer. Vehicle speed is usuallyslower, which means that the cooling of thebrakes is less efficient than when driving onlevel roads. To reduce the strain on thebrakes, shift into a lower gear and let theengine help with the braking. Do not forgetthat if you are towing a trailer, the brakes willbe subjected to a greater than normal load.
Anti-lock braking system (ABS)The Anti-lock Braking System (ABS) helps toimprove vehicle control (stopping and steer-ing) during severe braking conditions by limit-ing brake lockup. When the system "senses"impending lockup, braking pressure is auto-matically modulated in order to help preventlockup that could lead to a skid. The system performs a brief self-diagnostic test when the engine has been started anddriver releases the brake pedal. Another auto-matic test may be performed when the vehi-
cle first reaches a speed of approximately6 mph (10 km/h). The brake pedal will pulsateseveral times and a sound may be audiblefrom the ABS control module, which is nor-mal.
Cleaning the brake discsCoatings of dirt and water on the brake discsmay result in delayed brake function. Thisdelay is minimized by cleaning the brake lin-ings. Cleaning the brake pads is advisable in wet weather, prior to long-term parking, and afterthe vehicle has been washed. Do this bybraking gently for a short period while thevehicle is moving.
Emergency Brake AssistanceEBA is designed to provide full brake effectimmediately in the event of sudden, hardbraking. The system is activated by the speedwith which the brake pedal is depressed. When the EBA system is activated, the brake pedal will go down and pressure in the brakesystem immediately increases to the maxi-mum level. Maintain full pressure on thebrake pedal in order to utilize the systemcompletely. EBA is automatically deactivatedwhen the brake pedal is released.

05 Comfort and driving pleasure
Climate system
05
218* Option/accessory, for more information, see Introduction.
Electronic climate control, ECC
Temperature control, driver's side
Heated driver's seat 1
*
Defroster (maximum effect), electrically heated windshield*
Blower
Manual air distribution—floor
Manual air distribution—dashboard air vents
Manual air distribution—defroster
Heated rear window and door mirrors, see page 113
Heated front passenger's seat*
Temperature control, passenger's side
Recirculation
AUTO
A/C on/off
Ventilated driver's seat*
Ventilated passenger's seat*
Climate system controls
Ventilated front seats*The ventilation system consists of fans in the seats and backrests that draw air through theseat upholstery. The cooling effect increasesas the air in the passenger compartmentbecomes cooler. The ventilation is controlled by the ECC sys- tem, which takes into account the seat tem-perature, sunlight in the passenger compart-ment, and the ambient temperature.
1
The location of the button varies, depending on whether the vehicle is equipped with the optional ventilated front seats

05 Comfort and driving pleasure
Climate system
05
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* Option/accessory, for more information, see Introduction.219
The ventilation can be used at the same time as seat heating. The ventilation system can be activated when the engine is running. There are three comfortlevels that produce different cooling anddehumidifying effects:
• Level three: press the button once for maximum output – three indicator lightscome on.
• Level two: press the button twice for alower output – two indicator lights comeon.
• Level one: press the button three timesfor the lowest output – one indicator lightcomes on.
• Press the button a fourth time to switchoff the function – the indicator light will goout.
Heated front seats*
The current seat temperature setting is shown in the center console display
Press the lower section of the button repeatedly untilthe desired number of indi-cator lights illuminate: Highest heat level – three indicator lights.
Medium heat level – two indicator lights. Lowest heat level – one indicator light.If no indicator lights are illuminated, the seat heating is switched off.
Seat heating will automatically switch off when the engine is switched off.
Starting the seat heating automaticallyThis setting starts heating the driver's seat (at the highest level) automatically when theengine is started if the ambient temperature isbelow approx. 45° F (7° C). Activate/deactivate this function in the MY CAR menu system, under
Settings
Climate settingsAuto start driver seat
heater.
Heated rear seats* 2
Heat control for the outboard seating posi- tions is done in the same way as for the frontseats.
2
Not available on models equipped with the optional integrated booster cushions

05 Comfort and driving pleasure
Climate system
05
220
Blower controlTurn the control clockwise to increase or counterclockwiseto decrease the blowerspeed. If AUTO is selected,
blower speed will be regula-ted automatically and thiswill override manual adjust-
ment.
NOTE
If the blower is turned off completely, the air conditioning is disengaged, which mayresult in fogging on the windows.
Air distribution
Manual air distribution—defroster
Manual air distribution—dashboard air vents
Manual air distribution—floor
The figure consists of three buttons. When a button is pressed, the corresponding figurewill appear in the display with an arrow indi-cating which manual air flow has beenselected (see the following illustration). Seealso the air distribution chart on page 224.
Air distribution is shown in the center console display
AutoThe function automatically regulates cooling, heating,blower speed, recirculation,and air distribution to main-tain the chosen temperature.If you select one or moremanual functions, the other
functions continue to be controlled automati-cally. The air quality sensor is engaged and allmanual settings are switched off when AUTO
is pressed. The display shows
AUTO
CLIMATE.

05 Comfort and driving pleasure
Climate system
05
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* Option/accessory, for more information, see Introduction.221
Blower speed in automatic mode can be set under
Climate settingsAutomatic blower
adjustment
. Choose between Low, Normalor High.
NOTE
Selecting the lowest blower speed may increases the risk of fog forming on thewindows.
Temperature controlThe temperatures on the driver and passenger sidescan be set separately. Whenthe vehicle is started, themost recent setting isresumed.
NOTE
Heating or cooling cannot be speeded up by selecting a higher/lower temperaturethan the actual temperature required.
A/C – ON/OFFWhen the indicator light in the button is on, the air con-ditioning is controlled auto-matically. This cools/heatsand dehumidifies the incom-ing air. When the indicatorlight in the button is off, the
air conditioning is disengaged. Other func-tions are still controlled automatically. Whenmaximum defroster is selected, the air condi-tioning system is set for maximum blowerspeed and dehumidifies the cabin as quicklyas possible.Max. defroster and electrically heated windshield*
The selected settings are shown in the center console display
Electrical heating*
Max. defroster
Models without an electrically heated wind-
shield • Press the button once to start defrosting/de-icing the windshield and

05 Comfort and driving pleasure
Climate system
05
224
Air distribution table
Air distributionUseAir distributionUse
Air to windows. Some air flows from the dashboard airvents. The air is not recircula-ted. Air conditioning is alwaysengaged.To remove de-fog/de- ice the front side win-dows and windshieldquickly.Air to the floor and windows. Some airflows from the dash-board air vents.To ensure comfortable conditions and good de-fogging in cold or humidweather.
Air to windshield and side win- dows. Some air flows from theair dashboard vents.In cold or humid weather (blowerspeed should bemoderate to high).Air to floor and from dashboard air vents.In sunny weather with cool outside tempera-tures.
Airflow to windows and from dashboard air vents.To ensure good com- fort in warm, dryweather.Air to floor. Some air flows to the dashboardair vents and windows.To warm or cool the feet.
Airflow to the head and chest from the dashboard air vents.To ensure efficient cooling in warmweather.Airflow to windows, from dashboard airvents and to the floor.To cool the feet or pro- vide warmer air to theupper body in coldweather or hot, dryweather.

07 During your trip
Driving recommendations
07
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Remember that these properties can alter with the vehicle load. The heavier the load inthe cargo area, the less the tendency toundersteer.
Handling, roadholdingVehicle load, tire design and inflation pres-sure all affect vehicle handling. Therefore,check that the tires are inflated to the recom-mended pressure according to the vehicleload. See the "Tire pressure" section. Loadsshould be distributed so that capacity weightor maximum permissible axle loads are notexceeded.
Driving through water
•
The vehicle can be driven through water up to a depth of approximately 10 in.(25 cm), at a maximum speed of 6 mph(10 km/h).
• Take particular care when driving throughflowing water.
• Clean the electrical connections for trailerwiring after driving in mud or water.
• When driving through water, maintain lowspeed and do not stop in the water.
WARNING
•Avoid driving through standing or rushing water. Doing so can be dan-gerous and it may also be difficult todetermine the actual depth of thewater.
• If water cannot be avoided, after driv-ing through the water, press lightly onthe brake pedal to ensure that thebrakes are functioning normally. Wateror mud can make the brake liningsslippery, resulting in delayed brakingeffect.
CAUTION
• Engine damage will occur if water is drawn into the air cleaner.
• If the vehicle is driven through waterdeeper than 10 in (25 cm), water mayenter the differential and the transmis-sion. This reduces the oil's lubricatingcapacity and may shorten the servicelife of these components.
• Do not allow the vehicle to stand inwater up to the door sills longer thanabsolutely necessary. This could resultin electrical malfunctions.
• If the engine has been stopped whilethe vehicle is in water, do not attemptto restart it. Have the vehicle towedout of the water.
Engine and cooling systemUnder special conditions, for example when driving in hilly terrain, extreme heat or withheavy loads, there is a risk that the engineand cooling system will overheat. Proceed asfollows to avoid overheating the engine. •
Maintain a low speed when driving with a trailer up long, steep hills.
• Do not turn the engine off immediatelywhen stopping after a hard drive.

07 During your trip
Driving recommendations
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286
WARNING
The cooling fan may start or continue to operate (for up to 6 minutes) after theengine has been switched off.
•Remove any auxiliary lights from in front of the grille when driving in hot weatherconditions.
• Do not exceed engine speeds of4500 rpm if driving with a trailer in hillyterrain. The oil temperature could becometoo high.
Conserving electrical currentKeep the following in mind to help minimize battery drain:
• When the engine is not running, avoid using ignition mode
II. Many electrical
systems (the audio system, the optionalnavigation system, power windows, etc)will function in ignition modes 0 and I.
These modes reduce drain on the battery.
• Please keep in mind that using systems,accessories, etc., that consume a greatdeal of current when the engine is notrunning could result in the battery beingcompletely drained. Driving or having theengine running for approximately15 minutes will help keep the batterycharged. •
The optional 12-volt socket in the cargoarea provides electrical current even withthe ignition switched off, which drains thebattery.
Before a long distance tripIt is always worthwhile to have your vehicle checked by a trained and qualified Volvoservice technician before driving long dis-tances. Your retailer will also be able to sup-ply you with bulbs, fuses, spark plugs andwiper blades for your use in the event thatproblems occur. As a minimum, the following items should be checked before any long trip:
• Check that engine runs smoothly and that fuel consumption is normal.
• Check for fuel, oil, and fluid leakage.
• Have the transmission oil level checked.
• Check condition of drive belts.
• Check state of the battery's charge.
• Examine tires carefully (the spare tire aswell), and replace those that are worn.Check tire pressures.
• The brakes, front wheel alignment, andsteering gear should be checked by atrained and qualified Volvo service techni-cian only.
• Check all lights, including high beams. •
Reflective warning triangles are legallyrequired in some states/provinces.
• Have a word with a trained and qualifiedVolvo service technician if you intend todrive in countries where it may be difficultto obtain the correct fuel.
• Consider your destination. If you will bedriving through an area where snow or iceare likely to occur, consider snow tires.
Cold weather precautionsIf you wish to check your vehicle before the approach of cold weather, the followingadvice is worth noting:
• Make sure that the engine coolant con- tains 50 percent antifreeze. Any othermixture will reduce freeze protection. Thisgives protection against freezing down to–31 °F (–35 °C). The use of "recycled"antifreeze is not approved by Volvo. Dif-ferent types of antifreeze must not bemixed.
• Volvo recommends using only genuineVolvo antifreeze in your vehicle's radiator.
• Try to keep the fuel tank well filled – thishelps prevent the formation of condensa-tion in the tank. In addition, in extremelycold weather conditions it is worthwhileto add fuel line de-icer before refueling.
• The viscosity of the engine oil is impor-tant. Oil with low viscosity (thinner oil)