2018 VOLVO XC90 T8 brake

STARTING AND DRIVING
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457
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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STARTING AND DRIVING
460
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)

STARTING AND DRIVING
462
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.

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STARTING AND DRIVING
472
Stowing the ball holder
WARNING
When not in use, the detachable ball holder should always be properly stowed in the des-ignated location under the floor of the cargocompartment.
Related information
•Driving with a trailer (p. 472)
• Towing capacity and tongue weight (p. 660)
Driving with a trailer
There are a number of things to consider when towing a trailer, such as the towbar, the trailerand how the load is distributed in the trailer.
Load-carrying capacity is determined by the vehi- cle's curb weight. The total weight of all passen-gers and any installed accessories, e.g. towbar,reduces the vehicle's load-carrying capacity bythe corresponding amount. • Towbars used on the vehicle must be approved for the applicable use.
• Distribute the load on the trailer so that theweight on the towbar complies with thespecified maximum towball weight. Thetongue weight is calculated as part of thevehicle's payload.
• Increase the tire pressure to the recom-mended pressure for a full load.
• The engine is subjected to more load thanusual when towing a trailer.
• Towing a trailer affects the vehicle's han-dling, durability and driving economy.
• Do not drive with a heavy trailer when thevehicle is very new. Wait until the mileagehas reached at least 1000 km (620 miles).
• On long and steep downgrades, the vehicle'sbrakes are subjected to much more loadthan usual. When manually shifting, down-shift and adapt speed accordingly. •
Follow applicable regulations regarding per-mitted speed and weight.
• Drive slowly when towing a trailer up a longand steep incline.
• The maximum trailer weights given only applyto altitudes up to 1000 meters (3280 feet)above sea level. At higher altitudes, enginepower (and thus the vehicle's climbing ability)is decreased due to the reduced air density,and the maximum trailer weight must there-fore be reduced. The weight of the vehicleand trailer must be decreased by 10% foreach additional 1000 m (3280 feet) or partthereof.
• Avoid driving with a trailer on inclines of morethan 12%.
• Avoid overloading and other incorrect use.
• The trailer's brakes must be balanced withthe vehicle's brakes to help ensure safestops (follow applicable local regulations).

STARTING AND DRIVING
* Option/accessory.473
CAUTION
•Bumper-attached trailer hitches must not be used on Volvos, nor should safetychains be attached to the bumper.
• Trailer hitches attaching to the vehiclerear axle must not be used.
• Never connect a trailer's hydraulic brakesystem directly to the vehicle brake sys-tem, nor a trailer's lighting system directlyto the vehicle lighting system. Consultyour nearest authorized Volvo retailer forcorrect installation.
• When towing a trailer, the trailer's safetychains or wire must be correctly fastenedto the attachment points provided in thetrailer hitch on the vehicle. The safetychain or wire must never be fastened toor wound around the towing ball.
NOTE
The optional detachable trailer hitch may not be available in all markets or on all models.Consult your Volvo retailer.
NOTE
Extreme weather conditions, towing a trailer, driving at high altitudes and fuel quality arefactors that significantly increase a vehicle'sfuel consumption.
Trailer weights
WARNING
Please adhere to the recommendations provi- ded for trailer weight. If the recommendationsare not followed, the vehicle and trailer maybe difficult to control during evasive maneu-vers and braking.
NOTE
The specified maximum trailer weights are those permitted by Volvo. National vehicleregulations may set additional restrictions ontrailer weight and speed. The trailer hitchesmay be certified for higher towing weightsthan the vehicle is permitted to tow.
Self-leveling suspension
*The vehicle's self-leveling system attempts to keep the vehicle at a constant level, regardless ofload (up to the maximum permitted weight).When the vehicle is stationary, the rear end of thevehicle will be slightly lowered, which is normal.
Driving in hilly terrain or hot weatherIn certain conditions, there is a risk of overheat-ing when driving with a trailer. If overheating ofthe engine and drive system is detected, a warn-ing symbol will illuminate in the instrument panelalong with a message. The automatic transmission selects the optimalgear for the current load and engine speed.
Steep inclines
Do not lock the automatic transmission into a higher gear than what the engine can handle
‒ it
is not always preferable to drive in high gears at low rpm.
Parking on a hill
1. Depress the brake pedal.
2. Apply the parking brake.3. Put the gear selector in P.
4. Release the brake pedal.Put chocks behind the wheels when the vehicle is parked on a hill with a trailer attached.
Starting on a hill
1. Depress the brake pedal. 2. Put the gear selector in D.
3. Release the parking brake.
4. Release the brake pedal and start driving.
Related information
• Trailer Stability Assist
* (p. 474)
• Checking trailer lights (p. 475)
• Towing capacity and tongue weight (p. 660)
• Overheating of engine and transmission (p. 468)

STARTING AND DRIVING
* Option/accessory.
474
Trailer Stability Assist *
Trailer Stability Assist (TSA 8
) is a function
designed to help stabilize a vehicle that is tow- ing a trailer when the vehicle and trailer havebegun to sway. The function is part of the Elec- tronic Stability Control system ESC 9
.
Reasons for swayingA vehicle towing a trailer may begin to sway for various reasons. Normally this only occurs at highspeeds. However, if the trailer is overloaded orunevenly distributed, e.g. too far back, there is arisk of swaying even at low speeds. Swaying may be caused by factors such as:
• The vehicle and trailer are hit by a sudden, strong crosswind.
• The vehicle and trailer are traveling on anuneven road or over a bump.
• Sudden movements of the steering wheel.
Once swaying has begun, it can be difficult orimpossible to stop it. This makes the vehicle andtrailer difficult to control and there is a risk ofswerving into oncoming traffic or driving off theroad.
Trailer Stability Assist functionTrailer Stability Assist continuously monitors thevehicle's movements, particularly lateral move- ments. If swaying is detected, the brakes areapplied individually on the front wheels, which hasa stabilizing effect on the vehicle and trailer. Thisis often enough to enable the driver to regaincontrol of the vehicle. If the Trailer Stability Assist function's first attempt is not adequate to stop the swayingmotion, the brakes are applied on all wheels andengine power is temporarily reduced. As theswaying motion begins to decrease and the vehi-cle and trailer have once again become stable,TSA stops regulating the brakes/engine powerand the driver regains control of the vehicle.
NOTE
Trailer Stability Assist is deactivated if the driver selects the sport mode by deactivating
ESC in the center display's menu system.
Trailer Stability Assist may not intervene if the driver tries to compensate for the swaying motionby moving the steering wheel rapidly, becausethe system will then not be able to determine if itis the trailer or the driver causing the swaying.
When Trailer Stability Assist is activated, the
ESC symbol is
displayed in the instrument panel.
Related information
• Driving with a trailer (p. 472)
• Electronic Stability Control (p. 274)
8
Trailer Stability Assist
9 Electronic Stability Control

STARTING AND DRIVING
* Option/accessory.475
Checking trailer lights
When connecting a trailer, make sure that all of the lights on the trailer are functioning beforestarting to drive.
Trailer turn signals and brake lightsIf one or more of the turn signals or brake lights on the trailer is not working, a symbol and mes-sage will be displayed in the instrument panel.The other lights on the trailer must be checkedmanually by the driver before the vehicle is driven.
SymbolMessage
•Trailer turn indicator Right
turn indicator malfunction
•Trailer turn indicator Left
turn indicator malfunction
•Trailer brake light Malfunc-
tion
If any of the trailer's turn signal lights is not work- ing, the turn signal symbol in the instrumentpanel will also flash more quickly than normal.
Trailer rear fog lightWhen a trailer is connected, the vehicle's rear foglight may not illuminate and rear fog light func-tionality is instead transferred to the trailer. If thisis the case, check to see if the trailer is equippedwith a rear fog light before activating the vehicle's fog lights when driving with a trailer to helpensure safe operation.
Checking trailer lights
*
Automatic check
When the trailer has been connected to the vehi- cle's electrical system, its lights can be checkedby automatically activating them. This functionhelps the driver check that the trailer's lights arefunctioning correctly before starting to drive. In order to perform this check, the engine must be turned off.
1. When a trailer is connected to the towbar,
the message
Automatic Trailer Lamp
Check will appear in the instrument panel.
2. Acknowledge the message by pressing the O button on the right-side steering wheel
keypad.
> The light check will begin.
3. Get out of the vehicle to perform the check. > All of the lights on the trailer will beginflashing, and then illuminate separately one at a time.
4. Visually check that all of the trailer's lights are functioning correctly.
5. After a short time, all of the trailer's lights will start flashing again.
> The light check is completed.
Disabling the automatic check
The automatic light check can be disabled in the center display. 1.Tap
Settings in the Top view.
2. Tap
My CarLights and Lighting.
3. Deselect
Automatic Trailer Lamp Check.
Manual check
If the automatic check has been disabled, the check can be started manually. 1.Tap
Settings in the Top view.
2. Tap
My CarLights and Lighting.
3. Select
Manual Trailer Lamp Check.
> The light check will begin. Get out of the vehicle to perform the check.
Related information
• Driving with a trailer (p. 472)

STARTING AND DRIVING
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* Option/accessory.477
Remove the cover - press the marker with your finger while prying open the oppositeside/corner open with a coin or similar.
> The cover turns along its center line and
can then be removed. 3. Screw in the towing eyelet until it reaches its
stop. Fasten the eyelet securing by, for exam- ple, inserting a lug wrench * through it and
using this as a lever.
CAUTION
It is important that the towing eye is screwed in securely as far as possible.
Removing the towing eyelet:
–After use, unscrew the towing eyelet and return it to its storage location. Replace the cover on the bumper.
Related information
• Towing using a towline (p. 476)
• Recovery (p. 477)
• Tool kit (p. 564)
Recovery
This section refers to transporting the vehicle with a tow truck or similar vehicle.
Call a professional towing service for assistance. In certain conditions, the towing eyelet can be used to pull the vehicle onto a flatbed tow truck.
CAUTION
Note that vehicles with Twin Engine must always be towed raised with all wheels on thetow truck.
For vehicles equipped with leveling control *:
If the vehicle is equipped with pneumatic suspen- sion, this feature must be turned off before thevehicle is lifted onto a tow truck. Turning off thefunction in the center display. 1. Tap
Settings in the Top view.
2. Tap
My CarParking Brake and
Suspension.
3. Select
Disable Leveling Control.
The vehicle's location and ground clearance determine if it can be lifted onto a tow truck. Ifthe incline of the tow truck is too steep or if theground clearance under the vehicle is insufficient,attempting to pull it up may result in damage. Inthis case, the vehicle should only be lifted withthe tow truck's lifting equipment.