2018 VOLVO XC90 T8 Owner´s Manual

STARTING AND DRIVING
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the hill is and without the brakes needing to be applied. The brake lights will illuminate when thefunction is activated. The driver can brake to stop or slow the vehicle at any time by depressing the brake pedal. HDC is activated along with Low Speed Control (LSC), which facilitates and improves traction andcontrol on rough and slippery surfaces. The sys-tem is intended to be used at low speeds, up toapproximately 40 km/h (25 mph).
To keep in mind when using HDC
•
If the function is switched off while driving ona steep downhill gradient, braking effect willbe gradually reduced.
• HDC can be used in gear positions
D and R,
and in manual gears 1 or 2.
• It is not possible to manually shift to thirdgear or higher when HDC is active.
NOTE
When LSC with HDC is activated in the OFF ROAD drive mode, the feel of the acceleratorpedal and engine response will change.
NOTE
This drive mode is not designed to be used for normal street driving.
NOTE
The function is deactivated when driving at high speeds and must be reactivated at lowerspeeds if so desired.
Related information
• Activating and deactivating Hill Descent Con- trol using the function button (p. 455)
• Changing drive mode (p. 449)
• Low Speed Control (p. 453)
• All Wheel Drive (AWD) (p. 443)
Activating and deactivating HillDescent Control using the functionbutton
Vehicles that are not equipped with drive mode controls in the tunnel console have a function button for Hill Descent Control with
Hill
Descent Control in the center display's Func-
tion view.
Selecting Hill Descent Control in the center display's Function view
HDC only works at low speeds.
–Tap the Hill Descent Control button to
activate or deactivate the function.
> An indicator light in the button will illumi- nate when the function is activated.
When the engine is switched off, the function will be automatically deactivated.
NOTE
The function is deactivated when driving at high speeds and must be reactivated at lowerspeeds if so desired.

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Related information
•Hill Descent Control (p. 454)
• Changing drive mode (p. 449)
Economical driving
Drive economically and environmentally con- scious by thinking ahead, avoiding rapid startsand stops and adapting driving style and speedto the current traffic conditions.
Planning for electric drivingIt is important to plan electric motor use carefully to achieve the best possible mileage:
Charge
• Charge the vehicle regularly by plugging it into an electrical outlet. Make it a habit to always begin trips with the hybrid battery fully charged.
• Locate charging stations along your route.
• If possible, choose parking spots with charg-ing stations.
NOTE
Charge the vehicle from the electricity grid as often as possible!
Preconditioning
•
Whenever possible, precondition the vehicle before driving by connecting the chargingcable to an electrical outlet.
• Avoid parking the vehicle somewhere wherethe interior will become too hot or too coldwhile the vehicle is parked. If possible, parkthe vehicle in a climate-controlled garage. •
During a short drive after passenger com-partment preconditioning, turn off the pas-senger compartment fan or the air condition-ing in a hot climate.
• If preconditioning is not possible when it iscold outside, use seat and steering wheelheating first. Avoid heating the entire pas-senger compartment to reduce the amountof current being taken from the hybrid bat-tery.

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Driving
•Choose the Pure drive mode to help mini- mize electric power consumption.
• Maintain a steady speed and a generous fol-lowing distance to traffic ahead to minimizebraking. This drive mode has the lowestpower consumption.
• Balance energy requirements using theaccelerator pedal. Use the indicator on theinstrument panel to see available electricpower and avoid starting the combustionengine unnecessarily. The electric motor ismore effective than the combustion engine,especially at low speeds.
• When braking is necessary, brake gentlyusing the brake pedal. This will recharge thehybrid battery. A regenerative function isintegrated in the brake pedal and can beaugmented by the electric motor's brakingcapacity when the gear selector is in mode B
.
• Higher speeds increase energy consumption - air resistance increases with speed.
• Activate the
Hold function in the Function
view at high speeds when traveling farther than is possible using the hybrid battery'scapacity.
• Whenever possible, avoid using the
Chargefunction to charge the hybrid battery. Charg- ing the battery using the combustion engine increases fuel consumption and carbon diox-ide emissions.
• In a cold climate, reduce heating of the wind-shield/rear window, mirrors, seats and thesteering wheel.
• Maintain the correct pressure in the tires andcheck pressure regularly.
• The type of tires used could affect energyconsumption - consult a retailer for advice onsuitable tires.
• Remove unnecessary items from the vehicle- the heavier the load, the higher the fuelconsumption.
• Roof loads increase air resistance andincrease fuel consumption. Remove roofboxes, ski racks, etc. that are not in use.
• Avoid driving with the windows open.
• Do not keep the vehicle still on an upwardgradient by using the accelerator pedal. Usethe brakes instead.
Related information
•
Drive-E
‒
purer driving pleasure (p. 27)
• Factors affecting electric motor range(p. 458)
• Using the electric motor only (p. 457)
• Hybrid gauge (p. 87)
• Checking tire pressure (p. 557)
Using the electric motor only
When using the electric motor, Volvo Twin Engine provides a combination of good fueleconomy, low emissions and high performance.
For energy-efficient driving:
• Select the Pure drive mode to help maximize driving range using only the electric motor.
• Balance energy requirements using theaccelerator pedal. Use the indicator on theinstrument panel's hybrid gauge to see avail-able electric power and avoid starting thecombustion engine unnecessarily.
• When braking is necessary, brake gentlyusing the brake pedal. This will recharge thehybrid battery.
• Activate the
Hold function in the Function
view at high speeds when traveling farther than is possible using the hybrid battery'scapacity.
• Reduce current consumption in the passen-ger compartment by reducing e.g. fan speed,electric heating, or air conditioning use.
Also follow the general economical driving adviceregarding speed, tires and load to maximizerange.
Related information
• General information about Twin Engine(p. 406)
• Economical driving (p. 456)

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Hybrid gauge (p. 87)
• Factors affecting electric motor range (p. 458)
• Starting and stopping the combustion enginein Twin Engine vehicles (p. 444)
• "Hold" and "Charge" functions (p. 459)
Factors affecting electric motorrange
A number of factors affect the electric motor's driving range. The ability to achieve a long driv-ing range varies according to the outside condi-tions and to how the vehicle is driven.
The certified value for the distance that can be driven using the electric motor should not beconsidered an expected driving range. The actualrange is dependent on a number of factors.
Factors affecting driving rangeThe driver can influence some factors affectingdriving range, but not all. The longest range is achieved under very favora- ble conditions when all factors positively influ- ence range.
Factors the driver cannot control
There are several outside conditions that affect range to varying degrees: • the current traffic situation
• driving short distances
• topography
• ambient temperature and headwinds
• road conditions and road surface.
The following table shows the approximate rela- tionship between ambient temperature and driv-ing range with normal climate settings and withclimate settings turned off. Up to a certain limit, warmer ambient tempera-tures increase the electric motor's driving range.
Ambient tem-peratureClimate set-tings turnedoff
Normal cli-mate set-tings
30 °C (86 °F) 95 % 80 %
20 °C (68 °F) 100 % 90%
10 °C (50 °F) 90 % 80 %
0 °C (32 °F) 80 % 60 %
-10 °C (14 °F) 70 % 40 %

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Factors the driver can control
The driver should be aware that the following fac- tors help conserve energy and improve drivingrange:• charging the battery regularly
• preconditioning
• Pure drive mode
• climate control settings
• speed and acceleration
• the
Hold function
• tires and tire pressure.
The following table shows the approximate rela- tionship between constant speed and drivingrange. Driving at a lower constant speed helpsincrease the electric motor's driving range.
Constant speed
100 km/h (62 mph) 50 %80 km/h (50 mph) 70 %
60 km/h (37 mph) 90 %
50 km/h (31 mph) 100 %
NOTE
• The figures shown in the tables pertain to a new vehicle.
• None of the figures are absolute and areaffected by e.g. driving style, environmentand other conditions.
Related information
• Using the electric motor only (p. 457)
• Economical driving (p. 456)
• "Hold" and "Charge" functions (p. 459)
• Drive modes (p. 445)
"Hold" and "Charge" functions
In certain situations, it can be useful to control the hybrid battery's charge level while driving. This is possible with the
Hold and Charge func-
tions, which are available in all drive modes.
Function buttons for Hold and ChargeThe functions can be activated in the center dis- play's Function view.
Hold
Battery level sustained for later use.
This function retains the charge in the hybrid battery for theelectric motor and saves availa-ble electrical current for use at
a later time, such as when driving in an urban area or residential neighborhood.
Hold is availa-
ble regardless of the hybrid battery's charge level. The vehicle will function as in normal hybrid driv- ing with a discharged battery - in addition toreusing energy from e.g. regenerative braking, thecombustion engine will be used more frequentlyto maintain the charge in the battery.

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Charge
Engine charges hybrid battery.
This function charges the hybrid battery with the help ofthe combustion engine forincreased use of the electric
motor at a later time. This function is not availableif the hybrid battery's charge level is already high.
Symbols in the instrument panel
The symbol is displayed in the hybrid battery gauge
when Hold is activated.
The symbol is displayed in the hybrid battery gauge
when Charge is activated.
Related information
• Using the electric motor only (p. 457)
• Economical driving (p. 456)
• Hybrid gauge (p. 87)
Preparing for a long trip
It is important to have the vehicle's systems and equipment checked carefully before driving longdistances.
Check that:
• the engine is running properly and that fuel consumption is normal
• there are no leaks (fuel, oil or other fluid)
• the brake pedal is functioning optimally
• all lights are working
‒ adjust the headlight
height if the vehicle is carrying a heavy load
• tire tread depth and air pressure are at cor-rect levels. Change to snow tires when driv-ing in areas where there is a risk of snowy oricy roads.
• the start battery is sufficiently charged
• the wiper blades are in good condition
Related information
• Checking tire pressure (p. 557)
• Filling washer fluid (p. 650)
• Winter driving (p. 461)
• Economical driving (p. 456)
• Vehicle modem settings (p. 533)
• Loading recommendations (p. 586)
• Driving with a trailer (p. 472)
• Pilot Assist (p. 311)

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•
Speed limiter (p. 278)
• Tire sealing system (p. 572)
Winter driving
It is important to check the vehicle before driving in cold/snowy conditions to make sure it can bedriven safely.
Before the cold season arrives:
• Make sure the engine coolant contains 50% antifreeze. This mixture helps protect theengine from frost erosion down toapprox. -35 °C (-31 °F). Do not mix differenttypes of antifreeze as this could pose ahealth risk.
• Keep the fuel tank well filled to prevent con-densation from forming.
• Check the viscosity of the engine oil. Oil withlow viscosity (thinner oil) improves cold-weather starting and reduces fuel consump-tion when driving with a cold engine.
CAUTION
Low-viscosity oil should not be used with hard driving or in hot weather.
•
Check the condition and charge level of the start battery. Cold weather places greaterdemands on the start battery and reduces itscapacity.
• Use washer fluid containing antifreeze tohelp prevent ice from forming in the washerfluid reservoir.
Slippery driving conditionsFor optimal traction and roadholding, Volvo rec-ommends using snow tires on all wheels when-ever there is a risk of snow or ice on the road.
NOTE
Certain countries require use of winter tires by law. Not all countries permit the use ofstudded tires.
Practice driving on slippery surfaces under con- trolled conditions to learn how the vehicle reacts.
Related information
•Snow tires (p. 571)
• Snow chains (p. 571)
• Braking on salted roads (p. 431)
• Braking on wet roads (p. 431)
• Filling washer fluid (p. 650)
• Start battery (p. 615)
• Replacing windshield wiper blades (p. 648)
• Changing rear window wipers (p. 647)
• Refilling coolant (p. 612)

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Driving through standing water
Driving the vehicle through a deep pool of stand- ing water on a water-covered roadway is calledfording. This must be done with great caution.
To prevent damage to the vehicle when driving through water (e.g. on flooded roads): • Do not drive in water higher than the floor of the vehicle. If possible, check the depth ofthe water at its deepest point before drivingthrough it. Be particularly careful when driv-ing through flowing water.
• Always select the
Off Road drive mode
before driving in water to ensure the gasoline engine is running.
• Do not drive faster than walking speed.
• Do not stop the vehicle in the water. Drivecarefully forward or back the vehicle out ofthe water.
• Remember that waves created by passingvehicles could cause the water level to riseabove the vehicle's floor level.
• Avoid driving through salt water to help avoidthe risk of corrosion.
CAUTION
Parts of the vehicle (e.g. engine, transmission, driveline, electrical components, etc.) can bedamaged if the vehicle is driven through waterhigher than its floor level. Damage to anycomponents caused by flooding, vapor lock orinsufficient oil is not covered under warranty. If the engine stalls while the vehicle is in water, do not attempt to restart it. Have thevehicle towed on the bed of a tow truck to aworkshop - an authorized Volvo workshop isrecommended.
When you have passed the water, press lightly on the brake pedal and check that the brakes arefunctioning properly. Water, mud, slush, etc. canmake the brake linings slippery, resulting indelayed braking effect. If the vehicle is equipped with a trailer coupling contact, clean the contact after driving in water ormud.
Related information
•
Recovery (p. 477)
• Low Speed Control (p. 453)
Opening/closing the fuel filler door A button on the instrument panel is used to unlock the fuel filler door.
An arrow next to the fuel pump symbol in the instrument panelindicates the side of the vehicleon which the fuel filler door islocated.