light VOLVO XC90 T8 2018 Owner´s Manual

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STARTING AND DRIVING
430augment braking. This is indicated in the instru- ment panel with the pointer down in the red area.
Symbols in the instrument panel
SymbolMeaning
A
B
Check the brake fluid level. If the level is low, fill brake fluid andcheck to determine the reason forthe loss of brake fluid.
A
BFault in pedal sensor.
SymbolMeaning
A
BSteady glow for 2 seconds after the engine is started: Automaticfunction check. Steady glow for more than 2 sec- onds: Fault in the ABS system. Thevehicle's regular brake system isstill working, but without the ABSfunction.
If the message Brake pedal Cha-
racteristics changed Service required
is displayed, the "Brake-
by-wire" system is not functioning properly. The brake pedal will godown further than normal andgreater pressure will be needed onthe pedal to achieve braking effect.
A Canadian models.
B US models.
WARNING
• If both symbols illuminate at the same time and the brake level is below the
MIN
mark in the reservoir or if a brake system- related message is shown in the instru-ment panel: DO NOT DRIVE. Have thevehicle towed to a trained and qualifiedVolvo service technician and have thebrake system inspected.
• If both symbols illuminate at the sametime and the brake level is normal (notbelow the MIN mark in the reservoir) or ifa brake system-related message isshown in the instrument panel: drive thevehicle carefully to an authorized Volvoworkshop and have the brake systeminspected by a trained and qualified Volvoservice technician.
Related information
• Brake Assist System (p. 431)
• Auto-hold brakes (p. 436)
• Hill Start Assist (p. 437)
• Braking on wet roads (p. 431)
• Braking on salted roads (p. 431)
• Maintenance of the brake system (p. 432)
• Brake lights (p. 160)

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Brake Assist System
The brake enhancing system, Brake Assist
System (BAS), helps increase braking force andthereby reduce braking distance.
The system monitors the driver's braking habits and increases braking force when necessary.Braking force can be increased up to the point atwhich the ABS intervenes. The function is deacti-vated when pressure on the brake pedal isdecreased.
Related information
• Brakes (p. 429)
Braking on wet roads
Prolonged driving in heavy rain without braking may cause braking effect to be slightly delayedthe first time the brakes are applied.
This may also occur after washing the vehicle. It will then be necessary to apply greater pressureto the brake pedal. You should therefore maintaina greater distance to the vehicle ahead. Firmly apply the brakes after washing the vehicle or driving on wet roads. This helps warm up thebrake discs, enabling them to dry more quicklyand protecting them against corrosion. Considerthe current traffic situation when braking.
Related information
• Brakes (p. 429)
• Braking on salted roads (p. 431)
Braking on salted roads When driving on salted roads, a layer of salt may form on the brake discs and brake pads.
This could increase stopping distance. Maintain an extra large safety distance to the vehicleahead. Make sure to also:
• Apply the brakes from time to time to helpremove salt. Make sure braking does notpose a risk to any other road users.
• Gently apply the brakes when you have fin-ished driving and before driving again.
Related information
•Brakes (p. 429)
• Braking on wet roads (p. 431)

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Auto-hold brakesWith the Auto-hold brake function, the driver can release the brake pedal and the brakes willremain applied, for example, when the vehiclehas stopped at a traffic light or intersection.
When the vehicle stops, the brakes are activated automatically. The function can use either thenormal brakes or the parking brakes to keep thevehicle stationary and works on flat surfaces orhills. When driving off, the brakes will be automat-ically released if the driver's seat belt is buckled.
NOTE
When braking to a stop on an uphill or down- hill gradient, depress the brake pedal withslightly more force than usual before releas-ing to ensure that the vehicle cannot move atall.
The parking brake is activated if: • the vehicle is switched off
• the driver's door is opened
• the driver's seat belt is removed
• the vehicle has been stationary for a pro- longed period of time (5-10 minutes)
Symbols in the instrument panel
SymbolMeaning
This symbol illuminates when the function is using the normal brakesto keep the vehicle stationary.
A
B This symbol illuminates when the function is using the parking braketo keep the vehicle stationary.
A
Canadian models.
B US models.
Related information
• Activating and deactivating Auto-hold at a standstill (p. 436)
• Brakes (p. 429)
• Parking brake (p. 432)
• Hill Start Assist (p. 437)
Activating and deactivating Auto-hold at a standstill The Auto-hold brake function at a standstill is activated with the button in the tunnel console.
–Press the button in the tunnel console to activate or deactivate the function.
> The indicator light in the button will illumi-
nate when the function is activated. The function will remain active the next timethe vehicle is started.

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437
When shutting offIf the function is active and holding the vehicle stationary using the normalbrakes (A symbol lit), the brake pedalmust be depressed while pressing the
button in order to deactivate Auto-hold.
• The function will remain off until it is reactiva- ted.
• When Auto-hold is switched off, Hill StartAssist (HSA) will remain active to help pre-vent the vehicle from rolling backward whenstarting up a hill.
Related information
•Auto-hold brakes (p. 436)
Hill Start Assist
The function for assisting when starting the vehi- cle on inclines, Hill Start Assist (HSA), helpsprevent the vehicle from rolling backward whenstarting on an uphill gradient. When backing upa hill, HSA helps prevent the vehicle from rollingforward.
The function retains pressure from the brake pedal in the brake system for several secondsafter the brake pedal has been released. This temporary braking effect is released after a few seconds or when the driver begins driving. Hill Start Assist is available even if the Auto-hold brake function is switched off.
Related information
• Auto-hold brakes (p. 436)
• Brakes (p. 429)
Braking assist after a collision In a collision in which the activation level is reached for the pyrotechnic seat belt tensionersor airbags, or if a collision with a large animal isdetected, the vehicle's brakes will be automati-cally activated. This function is intended to helpprevent or reduce the effects of any subsequentcollision.
After a serious collision, it may no longer be pos- sible to control and steer the vehicle. In order toavoid or mitigate a possible further collision witha vehicle or an object in the vehicle's path, thebrake assist system is activated automatically tohelp stop the vehicle safely. The brake lights and hazard warning flashers are activated during braking. When the vehicle has stopped, the hazard warning flashers will con-tinue to flash and the parking brake will beapplied. If braking is not appropriate, e.g. if there is a risk of being hit by passing traffic, the driver can over-ride the system by depressing the acceleratorpedal. This function assumes that the brake system is intact after a collision. Brake assist is part of the Rear Collision Warning and Blind Spot Information safety systems.

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Information in the instrument panel
When driving in Hybrid mode, a hybrid gauge will be displayed in the instrument panel. The gaugewill indicate the amount of electrical currentrequired when the driver depresses the accelera-tor pedal. The marker between the lightning andthe drop shows how much current is available.
The instrument panel gauge when both the electric motor and the combustion engine are being used.
The instrument panel also shows how much current is being restored to thebattery (regenerated) during light brak-ing.
PURE
•Uses the electric motor only, with the lowest possible energy consumption and carbon dioxide emissions. This drive mode maximizes the use of the hybrid battery. Ground clearance is lowered
4
to reduce
air resistance and certain climate system func- tions are reduced to provide the longest possibledriving distance using only electricity. Pure mode is available when the hybrid battery is sufficiently charged. Even in Pure mode, the com-bustion engine will start if the charge level in thebattery gets too low. The combustion engine willalso start
• if the vehicle's speed goes above 125 km/h(78 mph)
• if the driver requests more power than theelectric motor can provide
• if factors such as cold weather affect thesystem or components.
This drive mode is optimized for maximum drivingdistance with electric propulsion and is primarilyintended for use in city driving. Pure helps pro-vide the lowest possible consumption even whenthe hybrid battery is fully discharged. ECO climateis activated to control the climate in the passen-ger compartment, and in slippery road conditionsslightly more wheel spin may be permitted beforeall-wheel drive is automatically activated.
ECO Climate
In Pure mode, ECO climate is automatically acti- vated in the passenger compartment to helpreduce energy consumption.
NOTE
When the Pure drive mode is activated, set-
tings for certain climate system and electricity consuming functions are reduced. Some ofthese settings can be reset manually, but fullfunctionality will only be restored by leaving
Pure mode or adapting the Individual drive
mode to full climate system functionality.
If condensation forms on the windows, tap the max defroster button, which will function normally.
4 For vehicles with pneumatic suspension.

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447
OFF ROAD
•Maximizes the vehicle's ability to traverse dif- ficult terrain or poor roads.
In this mode, ground clearance 4
is high, steering
is light, and all-wheel drive and Hill DescentControl are activated. This drive mode is only available at low speeds, up to 40 km/h (25 mph). If this speed is excee-ded, Off road mode will be cancelled and AWDmode will be activated instead. All-wheel drive requires both the combustion and electric motor to be in continuous operation,which results in higher fuel consumption. In Off road mode, a compass will be displayed between the speedometer and the tachometer inthe instrument panel. The permissible speedrange will be shown in the speedometer. This drive mode is optimized for maximum control when driving at low speeds on very poor roads or difficult terrain. It raises the chassis 4
, reduces
driveline throttle response, and locks the vehicle in all-wheel drive. The Hill Descent Control func-tion facilitates controlled driving on steep down-grades.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.
AWD
• Improves the vehicle's traction and handling by increasing all-wheel drive.
This drive mode locks the vehicle in all-wheeldrive. An optimal distribution between front andrear axle torque helps provide the best possiblecontrol, stability and traction, e.g. on slipperyroads or when towing a heavy trailer or anothervehicle. The AWD drive mode is always availableregardless of the hybrid battery's charge status. Both the combustion engine and the electricmotor are engaged to enable all-wheel drive,which results in higher fuel consumption. In the other drive modes, the vehicle automati- cally adapts the need for all-wheel drive accord-ing to the road surface, and can activate the elec-tric motor or start the combustion engine as nee-ded.
POWER
•
Power mode is designed to provide sportier driving characteristics and a faster accelera-tion response.
This drive mode maximizes the combined powerfrom the combustion engine and the electricmotor by providing power to both the front andrear wheels. Gear shifting will be faster and moredistinct and the transmission will prioritize gearswith a higher traction force. Steering response isfaster, suspension is stiffer and ground clearance is lower 4
to help reduce body roll when cornering.
Both the combustion engine and the electric motor are engaged to enable all-wheel drive,which results in higher fuel consumption. This drive mode is optimized for maximum per- formance and throttle response. It changes thethrottle response, gear shifting program andturbo boost system. Chassis settings and steer-ing and brake response are also optimized. ThePower drive mode is always available regardlessof the hybrid battery's charge status.
4 For vehicles with pneumatic suspension.

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* Option/accessory.453
Leveling control settings *
The vehicle can be lowered or raised to make it easier to load or for passengers to get in andout. Turn off leveling control before lifting the vehicle with a jack to help avoid problems with thepneumatic suspension.
Adjusting loading mode
Use the buttons in the cargo compartment to raise or lower the rear section of the vehicle tofacilitate loading or unloading the vehicle or con-necting or disconnecting a trailer.
Center display settings
Easy Entry and Exit Suspension Control
The vehicle can be lowered to make it easier to get in and out. Activating easy entry in the center display: 1.
Tap
Settings in the Top view.
2. Tap
My CarMirrors and Convenience.
3. Select
Easy Entry and Exit Suspension
Control.
> When the vehicle is parked and the engine is turned off, the level is lowered. (Level adjustment will stop if a side dooris opened and will resume after a slightdelay when the door has been closed.)When the engine is started and the vehi-cle begins to move, the level will be raisedto the height set by the selected drivemode.
Disable Leveling Control
In certain situations, this function must be turned off, e.g. before the vehicle is raised using a jack *.
The level difference caused by raising the vehicle with a jack could cause problems with the pneu-matic suspension. Turning off the function in the center display:1. Tap
Settings in the Top view.
2. Tap
My CarParking Brake and
Suspension.
3. Select
Disable Leveling Control.
Related information
• Leveling control
* and suspension (p. 450)
• Loading recommendations (p. 586)
Low Speed Control The low-speed function, Low Speed Control (LSC), facilitates and improves control and trac-tion on rough roads and slippery surfaces, e.g.when towing a trailer on grass or up boat ramps. The function is included in the Off Road drive mode.
Low Speed Control is designed for driving on rough roads and when towing trailers at lowspeeds, up to approximately 40 km/h (25 mph). When driving at low speeds, LSC prioritizes low gears and all-wheel drive to help avoid wheel spinand improve traction on all wheels. The accelera-tor pedal will be less responsive to improve trac-tion and speed control at low speeds. The function is activated together with Hill Descent Control (HDC), which makes it possibleto control speed going down steep hills using theaccelerator pedal and reduces the need to usethe brake pedal. The system makes it possible tomaintain a low and uniform speed when drivingdown steep hills.

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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 Low Speed Con- trol using the function button (p. 454)
• Changing drive mode (p. 449)
• Hill Descent Control (p. 454)
• All Wheel Drive (AWD) (p. 443)
Activating and deactivating LowSpeed Control using the functionbutton
Vehicles that are not equipped with drive mode controls in the tunnel console have a function button for Low Speed Control with
Hill Descent
Control in the center display's Function view.
Selecting Low Speed Control in the center display's Function view
–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
• Low Speed Control (p. 453)
• Changing drive mode (p. 449)
Hill Descent Control The function for assisting when driving downhill, Hill Descent Control (HDC), is a low-speedfunction with increased engine braking. Thefunction makes it possible to increase ordecrease the vehicle's speed on steep downhillgradients by only using the accelerator pedal,without applying the brakes. The function is included in the Off Road drive mode.
HDC is designed for driving on rough roads at low speeds and downhill gradients with slipperyor otherwise difficult road surfaces. The driverdoes not need to use the brake pedal but caninstead focus on steering.
WARNING
HDC is only intended to be a supplementary braking aid and it does not function in all sit-uations. The driver is always ultimately responsible for operating the vehicle in a safe manner.
FunctionHill Descent Control allows the vehicle to move forward or backward at very low speeds assistedby the brake system. The driver can increase thespeed by pressing the accelerator pedal. Whenthe accelerator pedal is released, the vehicle willreturn to very low speed regardless of how steep

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455
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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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)