2018 VOLVO XC90 fuel

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STARTING AND DRIVING
* Option/accessory.
422
Related information
• Shiftlock (p. 421)
• Gear selector positions for automatic trans- missions (p. 418)
The kickdown function
Kickdown is used when maximum acceleration is needed, e.g. when passing.
When the accelerator pedal is depressed all the way to the floor (past the normal full acceleratorposition), the transmission will automaticallyengage kickdown, i.e. immediately shift down to alower gear. If the accelerator pedal is released from the kick- down position, the transmission will automaticallyshift up again.
Safety function
The transmission control module is equipped with a downshift protection feature to help prevent theengine from overheating. In some conditions, the transmission will prevent downshifting/kickdown if this would lead to suchhigh engine speed (rpm) that the engine couldbe damaged. If the driver still attempts downshift-ing or kickdown at a high rpm, nothing will hap-pen and the original gear will remain selected. With kickdown, the vehicle can downshift one or more steps at a time depending on the enginespeed. The vehicle upshifts when the engine rea-ches its maximum rpm to prevent engine dam-age.
Related information
• Gear selector positions for automatic trans-missions (p. 418)
Gear indicator
*
The gear indicator in the instrument panel shows the gear currently being used for manual shiftingand indicates when another gear should beselected to optimize fuel economy.
For eco-friendly driving when manually shifting, it is important to use the correct gear and to shiftgears in good time. The gear indicator in the instrument panel shows the gear currently being used and indicates withan upward-facing arrow if a higher gear shouldbe selected.
Gear indicator in 12" instrument panel *.

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ECO
•Adapt the vehicle for more fuel-efficient and eco-friendly driving with Eco mode.
In this mode, the Start/Stop function is activated,the ground clearance is lower to reduce air resis-tance and certain climate settings are reduced. The instrument panel has an ECO gauge to facili- tate fuel-efficient driving.
OFF ROAD
• Maximizes the vehicle's ability to traverse dif- ficult terrain or poor roads.
In this mode, ground clearance is high, steering islight, and all-wheel drive and Hill Descent Controlare activated. The Start/Stop function is deacti-vated. This mode can only be activated at low speeds. The permitted speed range will be shown in thespeedometer. If this speed is exceeded, Off roadmode will be deactivated and another drive modeactivated. In Off road mode, a compass will be displayed between the speedometer and the tachometer inthe instrument panel.
NOTE
This drive mode is not designed to be used for normal street driving.
NOTE
Due to the increased ground clearance, if the OFF ROAD mode was selected when theengine was switched off, the suspension willlower when the engine is restarted.
CAUTION
Do not use the OFF ROAD drive mode when towing a trailer without an electrical connec-tion. This could result in damage to the pneu-matic suspension system's bellows.
DYNAMIC
• Dynamic mode is designed to provide sport- ier driving characteristics and a faster accel-eration response.
Gear shifting will be faster and more distinct andthe transmission will prioritize gears with a highertraction force. Steering response is faster, suspension is stiffer and ground clearance is lower to help reducebody roll when cornering. The Start/Stop function is deactivated.
INDIVIDUAL
• Customizes drive mode to personal preferen- ces. Select one of the drive modes as a basis andadjust the settings to achieve your preferred driv-ing characteristics. These settings will be storedin your driver profile. Individual drive mode is only available if it has been activated in the center display.Settings view
3
for Individual drive mode.
1. Tap Settings in the Top view.
3
The image is schematic and the details may vary depending on vehicle model or software update.

STARTING AND DRIVING
* Option/accessory.
426
ECO drive mode
The Eco drive mode optimizes the vehicle's driv- ing characteristics for more fuel-efficient andeco-friendly driving.
Use this mode to save fuel and promote eco- friendly driving. When ECO mode is activated, the following cha- racteristics are modified:
• The automatic transmission's shifting points.
• Engine control and accelerator pedalresponse.
• Eco Coast functionality is activated andengine braking is disabled when the acceler-ator pedal is released at speeds between65 and 140 km/h (40 and 87 mph).
• Some of the climate system settings will bereduced or switched off.
• The suspension's self-leveling function
* will
lower ground clearance to help reduce windresistance.
• Information will be shown in the ECO gaugein the instrument panel to help promotemore eco-friendly and economical driving.
Coast function Eco CoastEco Coast essentially deactivates engine braking,allowing the vehicle's kinetic energy to be usedto roll greater distances. When the driver releasesthe accelerator pedal, the transmission is auto-matically disengaged from the engine. Engine speed is reduced to idling speed to reduce fuelconsumption. This function is most effective in driving situa- tions where the vehicle can roll freely for a longdistance, e.g. on roads with slight downgrades orwhen a decrease in speed is anticipated, such aswhen approaching an area with a lower speedlimit.
Activating Eco Coast
The function is activated when the accelerator pedal is fully released and the following condi-tions are met:
• Eco drive mode is activated.
• The gear selector is in
D.
• The vehicle's speed is approximately65-140 km/h (40-87 mph).
• The gradient of the downgrade is less thanapproximately 6%.
COASTING will be displayed in the instrument
panel when Eco Coast is being used.
Limitations
Eco Coast is not available if:
• The engine and/or transmission are not at normal working temperatures.
• The gear selector is moved from
D to manual
shifting mode.
• The vehicle's speed is not within the65-140 km/h (40-87 mph) range. •
The gradient of the downgrade is more thanapproximately 6%.
• The steering wheel paddles
* are being used
for manual shifting.
Deactivating and turning off Eco Coast
In certain situations, it may be advisable to deac- tivate or turn off Eco Coast so that engine brak-ing can be used. These situations might includedriving down steep hills or before passinganother vehicle to help ensure this can be doneas safely as possible. Deactivate Eco Coast by:
• Pressing the accelerator or brake pedal.
• Moving the gear selector to manual mode.
• Using the steering wheel paddles
* to shift.
Turn off Eco Coast by:
• Switching drive mode
* or switching off drive
mode Eco in Function view.
It is possible to roll short distances even without Eco Coast in order to help conserve fuel. How-ever, for the best fuel economy, Eco Coast shouldbe activated and used to roll longer distances.
Cruise control Eco CruiseWhen cruise control is activated in the Eco drivemode, the vehicle's acceleration and decelerationwill be slower than in other drive modes to helpfurther conserve fuel. Because of this, the vehi-cle's actual speed may be slightly above or belowthe set speed.

STARTING AND DRIVING
* Option/accessory.
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Activating and deactivating ECOdrive mode using the functionbutton
Vehicles equipped with drive mode controls in the tunnel console have a function button forEco drive mode in the center display's Functionview.
When the engine is switched off, ECO mode is deactivated and must therefore be reactivated each time the engine is started. ECO will be dis-
played in the instrument panel when the function is activated.
Selecting Eco drive mode in the center
display's Function view
–Tap the Driving Mode ECO button to acti-
vate or deactivate the function.
> An indicator light in the button will illumi- nate when the function is activated.
Related information
• ECO drive mode (p. 426)
• Changing drive mode
* (p. 425)
• Drive modes
* (p. 423)
Start/Stop function
Start/Stop is a function that temporarily switches off the engine when the vehicle has stopped,e.g. at a traffic light or in heavy traffic, and thenstarts it again automatically when the brakepedal is released.
The Start/Stop function reduces fuel consump- tion, which helps to reduce exhaust emissions. The system makes it possible to drive more eco- nomically and climate-smart by letting the engineauto-stop when appropriate.
Related information
• Driving with the Start/Stop function (p. 428)
• Conditions for the Start/Stop function(p. 430)
• Drive modes
* (p. 423)
Driving with the Start/Stop function
Start/Stop is a function that temporarily turns off the engine when the vehicle is stationary andthen automatically starts it again when the vehi-cle starts moving.
The Start/Stop function is available when the engine is started and can be activated if certainconditions are met. The instrument panel indi-cates if the function is available, active or notavailable. All of the vehicle's ordinary systems, such as lighting, radio, etc. function normally when theengine has been auto-stopped. Certain functionsmay be temporarily reduced, however, such asthe climate system's blower speed or extremelyhigh audio system volume.
Auto-stopTo auto-stop the engine:
• Stop the vehicle by applying the brakes andkeep the brake pedal depressed. The enginewill auto-stop.
In Eco or Comfort 4
drive mode, the engine may
auto-stop before the vehicle has completely stop-ped. With Adaptive Cruise Control or Pilot Assist acti- vated, the engine will auto-stop after approxi-mately three seconds.
4 Normal start mode.

STARTING AND DRIVING
* Option/accessory.
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Activating and deactivating Hill
Descent 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.
Related information
• Hill Descent Control
* (p. 437)
• Changing drive mode
* (p. 425)
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.
Driving economically conserves natural resources
Observe the following rules:
• Do not warm up the engine by idling. It is better to begin driving normally immediately after starting the engine. A cold engine uses more fuel than a warm engine and is subject to increased wear.
• Whenever possible, avoid using the vehicle todrive short distances. The engine does nothave time to reach a normal operating tem-perature and this leads to increased fuelconsumption.
• Maintain a steady speed and a generous fol-lowing distance to traffic ahead to minimizebraking.
• For lower fuel consumption, activate Ecodrive mode.
• Use the Eco Coast function in drive mode Eco - engine braking is deactivated, allowing the vehicle's kinetic energy to be used to rollgreater distances.
• Use gear
D as often as possible and avoid
using the kick-down function.

STARTING AND DRIVING
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439
•
Fuel consumption is increased at high speeds - air resistance increases with speed.
• Remove unnecessary items from the vehicle- the heavier the load, the higher the fuelconsumption.
• Maintain the correct pressure in the tires andcheck pressure regularly.
• The type of tires used could affect fuel con-sumption - consult a retailer for advice onsuitable tires.
• Do not use winter tires after the winter sea-son has ended.
• Roof loads increase air resistance andincrease fuel consumption. Remove roofboxes, ski racks, etc. that are not in use.
• Avoid driving with the windows open.
• Using the trip computer's fuel consumptionindicators can help you learn how to drivemore economically.
Other factors that decrease fuel
consumption
• Dirty air cleaner.
• Dirty engine oil and clogged oil filter.
• Incorrect front-end alignment.
• Incorrect wheel alignment.
Some of the above items and others are checked as part of Volvo's standard maintenance sched-ule.
Related information
• Drive-E
‒ purer driving pleasure (p. 27)
• ECO drive mode (p. 426)
• Checking tire pressure (p. 535)
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. 535)
• Filling washer fluid (p. 632)
• Winter driving (p. 440)
• Economical driving (p. 438)
• Vehicle modem settings (p. 511)
• Loading recommendations (p. 564)
• Driving with a trailer (p. 449)
• Pilot Assist (p. 309)

STARTING AND DRIVING
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Speed limiter (p. 276)
• Tire sealing system (p. 550)
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. 549)
• Snow chains (p. 549)
• Braking on salted roads (p. 411)
• Braking on wet roads (p. 410)
• Filling washer fluid (p. 632)
• Start battery (p. 598)
• Replacing windshield wiper blades (p. 630)
• Changing rear window wipers (p. 629)
• Refilling coolant (p. 590)

STARTING AND DRIVING
* Option/accessory.441
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.
The vehicle can be driven through water up to a depth of 45 cm (17.7 in) at no more than walkingspeed. Be particularly careful when drivingthrough flowing water. When driving through standing water, drive slowly and do not stop the vehicle. When you havepassed the water, press lightly on the brake pedaland check that the brakes are functioning prop-erly. Water, mud, slush, etc. can make the brakelinings slippery, resulting in delayed brakingeffect.
• If the vehicle is equipped with contacts for anelectric heater or trailer coupling, clean theseafter driving in water or mud.
• Do not allow the vehicle to stand in water upto the sills any longer than absolutely neces-sary. This could result in electrical malfunc-tions.
CAUTION
•Engine damage could occur if water enters the air cleaner.
• If water enters the transmission, the lubri-cating ability of the oils is reduced andthe service life of these systems is short-ened.
• Damage to any component, engine,transmission, turbocharger, differential orits internal components caused by flood-ing, vapor lock or insufficient oil is notcovered under warranty.
• If the engine stalls while the vehicle is inwater, do not attempt to restart it. Havethe vehicle towed out of the water to aworkshop. An authorized Volvo workshopis recommended. Risk of engine failure.
Related information
• Recovery (p. 455)
• Low Speed Control
* (p. 435)
Opening/closing the fuel filler door The vehicle must be unlocked before the fuel filler door can be opened 5
.
An arrow next to the fuel pump symbol in the instrument panelindicates the side of the vehicleon which the fuel filler door islocated.
1. Open the fuel filler door by pressing lightly
on its rear edge.
2. After refueling, press the fuel filler door lightly to close it.
Related information
• Refueling (p. 442)
5
Only locking and unlocking using the remote key, Passive Entry or Volvo On Call will affect the status of the fuel filler door.