2017 VOLVO XC90 TWIN ENGINE HYBRID warning

DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.373
•Heavy rain or snow may inhibit PAP'scapacity to correctly measure a parkingspace.
•Do not use PAP when using snow chainsand/or a temporary spare tire.
•Do not use PAP if there are any objects pro-truding from the vehicle.

WARNING
•The front end of your vehicle may turn outtoward oncoming traffic during the park-ing procedure.
•Objects located above the parking sen-sors' field of vision are not included whenPAP measures a parking space. For thisreason, PAP may turn into the parkingspace too soon. Avoid parking spaces ofthis type.
•The driver is always responsible for deter-mining if PAP has selected a suitableparking space.
Maintenance
Location of the PAP sensors
In order for PAP to function correctly, these sen-sors must be cleaned regularly with water and asuitable car washing detergent.

Related information
•Park Assist Pilot (PAP)* (p. 368)
•Park Assist Pilot (PAP)* limitations (p. 372)
•Park Assist Pilot (PAP)* symbols and mes-sages (p. 374)

STARTING AND DRIVING
* Option/accessory, for more information, see Introduction.376
Starting and driving
The vehicle is equipped with an automatic trans-mission that also makes it possible to shift gearsmanually.
Certain functions can also be used when theengine is not running, depending on the ignitionmode being used.

Related information
•Starting the engine (p. 402)
•Ignition modes (p. 400)
•Automatic transmission (p. 424)
•Opening/closing the fuel filler door (p. 393)
•Parking brake (p. 382)
Brakes
The brake system is a hydraulic system consist-ing of two separate brake circuits. If a problemshould occur in one of these circuits, it is stillpossible to stop the vehicle with the other brakecircuit.
Brake system
If one of the brake circuits is not functioning,more pressure will be needed on the brake pedal(and the pedal will go down farther) for normalbraking effect.
If the brake pedal must be depressed fartherthan normal and requires greater foot pressure,the stopping distance will be longer.
Pressure on the brake pedal is enhanced by thepower braking function.

WARNING
If the vehicle does not have electrical currentand both the electric motor and gasolineengine are switched off, the brakes cannot beused to stop the vehicle.
When the Hill Start Assist function is being used,it will take slightly longer for the brake pedal toreturn to its normal position if the vehicle isparked on an incline or uneven surface.
When driving in very hilly areas or if the vehicle iscarrying a heavy load, using brake mode B toaugment the brakes or the Off Road* drive
mode can also be used on steep downgrades toincrease the engine braking effect at low speeds.
Anti-lock Braking System ABS
The ABS system helps to improve vehicle control(stopping and steering) during severe brakingconditions by limiting brake lockup.
When ABS is operating, there may be somevibration in the brake pedal, which is normal.
The system performs a brief self-diagnostic testwhen the engine has been started and driverreleases the brake pedal. Another automatic testmay be performed when the vehicle first reachesa speed of approximately 6 mph (10 km/h). Thebrake pedal will pulsate several times and asound may be audible from the ABS controlmodule, which is normal.

Function check when the engine is
started
A Plug-in Hybrid is equipped with a "brake bywire" brake system. A function check is per-formed each time the engine is started and thedriver depresses the brake pedal to move thegear selector from P.
In certain cases, a message may appear in theinstrument panel saying that pressure on thebrake pedal is too low. Press harder on the pedal.

Light braking charges the hybrid battery
When the brakes are applied lightly, the electricmotor's braking function is used, which converts

STARTING AND DRIVING
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* Option/accessory, for more information, see Introduction.377
kinetic energy into electricity that is used tocharge the hybrid battery. This is indicated in theinstrument panel, see also the article "Generalinformation about the XC90 T8 Twin EnginePlug-in Hybrid".
Battery charging gauge in the instrument panel
This function is active at speeds from approx.90 mph (150 km/h) down to 3 mph (5 km/h).When braking at speeds outside of this range orduring harder braking, the hydraulic brake systemis used.

Cleaning the brake discs
Coatings of dirt and water on the brake discsmay result in delayed brake function. This delay isminimized by cleaning the brake linings.
Cleaning the brake pads is advisable in wetweather, prior to long-term parking, and after thevehicle has been washed. Do this by braking gen-tly for a short period while the vehicle is moving.
Driving on wet or salted roads
Prolonged driving on wet or salted roads canaffect brake function and increase stopping dis-tance. Be sure to keep a safe distance to thevehicle ahead when driving under these condi-tions.

Brake pad inspection
On vehicles equipped with a jack*, the conditionof the brake pads can be checked by raising thevehicle and performing a visual inspection of thebrake pads.

WARNING
•If the vehicle has been driven immediatelyprior to a brake pad inspection, the wheelhub, brake components, etc., will be veryhot. Allow time for these components tocool before carrying out the inspection.
•Apply the parking brake and put the gearselector in the Park (P) position.
•Block the wheels standing on the ground,use rigid wooden blocks or large stones.
WARNING
•Use the jack intended for the vehiclewhen changing a tire. For any other job,use stands to support the vehicle.
•The jack should be kept well-greased andclean, and should not be damaged.
•Be sure the jack is on a firm, level, non-slippery surface.
•No objects should be placed between thebase of jack and the ground, or betweenthe jack and the attachment bar on thevehicle.
•The jack must correctly engage the jackattachment.
•Never allow any part of your body to beextended under a vehicle supported by ajack.

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STARTING AND DRIVING
* Option/accessory, for more information, see Introduction.378

Instrument panel symbols
SymbolExplanation
A
B
Red symbol: Check the brake fluidlevel. If the level is low, top up andhave the system inspected todetermine the cause of the loss offluid.
Yellow symbol: there is a fault inthe brake pedal sensor.
A
B
Steady glow for more than2 seconds: there is a fault in theABS system. The normal brakesystem will still function but with-out ABS brake modulation.
If Brake pedalCharacteristicschanged Service required isdisplayed, the Brake-by-Wire sys-tem is not functioning properly.The brake pedal must be pressedfarther down and with more pres-sure for braking effect.
AUS modelsBCanadian models

WARNING
If both symbols illuminate at the same timeand the brake level is below the MIN mark inthe reservoir or if a brake system-related mes-sage is shown in the instrument panel: DONOT DRIVE. Have the vehicle towed to atrained and qualified Volvo service technicianand have the brake system inspected.
If both symbols illuminate at the same timeand the brake level is normal (not below theMIN mark in the reservoir) or if a brake sys-tem-related message is shown in the instru-ment panel: drive the vehicle carefully to anauthorized Volvo workshop and have thebrake system inspected by a trained andqualified Volvo service technician.

Related information
•Brake functions (p. 378)
•Brake assist system (p. 379)
•Emergency brake lights (p. 380)
•General information about the XC90 T8 TwinEngine Plug-in Hybrid (p. 16)
Brake functions
The vehicle's standard braking features are aug-mented by a number of auxiliary help functions.
In addition to the wheel brakes and the parkingbrake, the vehicle is equipped with several auto-matic brake assist functions. These systems helpthe driver by e.g., keeping the vehicle stationarywhen the brake pedal is not depressed (at a traf-fic light or intersection), when starting up a hill orwhen driving down a hill.
These systems include:
•Auto-hold brakes
•Hill Start Assist
•Braking assist after a collision
•Hill Descent Control*

Related information
•Brakes (p. 376)
•Parking brake (p. 382)
•Hill Descent Control (HDC) (p. 380)
•Auto-hold brake function (p. 379)

STARTING AND DRIVING
380
Braking effect after a collision
In certain types of collisions, the vehicle's brakesare applied to help prevent or mitigate a secon-dary collision.
Maintaining control of the vehicle after a collisionmay be difficult. To help avoid or mitigate theeffect of a secondary collision, the brakes areapplied automatically to help bring the vehicle toa stop.
The brake lights and hazard warning flashers willbe activated and the flashers will remain on afterthe vehicle has come to a standstill. The parkingbrake will then be applied automatically.
In a situation where stopping the vehicle may notbe desirable, the driver can override this systemby pressing the accelerator pedal.
This feature can only function if the brake systemis intact after the collision.

Related information
•Brake functions (p. 378)
•Airbag system (p. 71)
•Rear Collision Warning (RCW) (p. 338)
Emergency brake lights
The emergency brake lights activate in the eventof hard braking/rapid deceleration at most nor-mal driving speeds or if the ABS system is acti-vated. This function causes an additional taillighton each side of the vehicle to illuminate to helpalert vehicles traveling behind.
Once the emergency brake lights have been acti-vated, if the driver releases the brake pedal, thebrake lights will return to their normal function.
Related information
•Brakes (p. 376)
•Hazard warning flashers (p. 151)
•Brake lights (p. 151)
Hill Descent Control (HDC)
HDC is a type of low-speed automatic enginebrake and makes it possible to increase ordecrease the vehicle's speed on steep downhillgradients using only the accelerator pedal, with-out applying the brakes.
HDC is integrated into the Off Road drivemode.
HDC is particularly useful when driving downsteep hills with rough surfaces, and where theroad may have slippery patches.

WARNING
HDC does not function in all situations, and isa supplementary braking aid. The driver hasfull responsibility for driving in a safe manner.

Function
HDC allows the vehicle to roll forward or inreverse at very low speed with enhanced enginebraking. However, speed can be adjusted withthe accelerator pedal. When the acceleratorpedal is released, the vehicle will return to verylow speed.
The driver can use the brakes to slow or stop thevehicle at any time.
HDC is activated along with Low Speed Control(LSC), which together make driving on slipperysurfaces at low speeds easier.

STARTING AND DRIVING
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383

Symbol in the instrument panel
SymbolExplanation
A
B
The symbol flashes while the park-ing brake is being applied.
If the symbol flashes at any othertime, this indicates a fault. See themessage in the instrument panel.
AUS modelsBCanadian models

Automatic function
The parking brake is applied automatically:
•If the Auto Hold function is activated and thevehicle has been stationary for approx.5 minutes.
•If the gear selector is moved to P on a steephill.
•When the engine is turned off (this functioncan be selected, see "Parking brake set-tings" below).

Emergency braking
In an emergency, the parking brake can beapplied when the vehicle is moving by pressingand holding up the control. Braking will be inter-rupted when the control is released.
An audible signal will sound during this proce-dure if the vehicle is moving at higher speeds.
Releasing the parking brake
Releasing manually
1. Press firmly on the brake pedal.
2. Press the control.
> This releases the parking brake and thesymbol in the instrument panel will go out.

Releasing automatically
1. The driver must fasten his/her seat belt.
2. Start the engine.
3. Press firmly on the brake pedal.
4.Move the gear selector to D or R and pressthe accelerator pedal.
> This releases the parking brake and thesymbol in the instrument panel will go out.
NOTE
•For safety reasons, the parking brake isonly released automatically if the engineis running and the driver is wearing a seatbelt.
•The electric parking brake will bereleased immediately when the accelera-tor pedal is pressed and the gear selectoris in position D or R.

Parking on a hill
Put the gear selector in P.
•If the vehicle is pointing uphill, turn the frontwheels so that they point away from the curb.
•If the vehicle is pointing downhill, turn thefront wheels so that they point toward thecurb.
The parking brake should also be applied.

WARNING
Always apply the parking brake when parkingon hills or uneven surfaces.

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385
Before a long distance trip
It is always worthwhile to have your vehiclechecked by a trained and qualified Volvo servicetechnician before driving long distances. Yourretailer will also be able to supply you with bulbs,fuses, spark plugs and wiper blades for your usein the event that problems occur.
As a minimum, the following items should bechecked before any long trip:
•Check that engine runs smoothly and thatfuel consumption and the oil level are normal.
•Before leaving on a trip, fill the fuel tank andmake sure the hybrid battery is fully charged.During the trip, make a habit of refueling reg-ularly.
•Check for fuel, oil, and fluid leakage.
•Check condition of drive belts.
•Check state of the battery's charge.
•Examine tires carefully and replace thosethat are worn. Also, check tire inflation pres-sure.
•The brakes, front wheel alignment, and steer-ing gear should be checked by a trained andqualified Volvo service technician 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 to drive
in countries where it may be difficult toobtain the correct fuel.
•Consider your destination. If you will be driv-ing through an area where snow or ice arelikely to occur, consider using snow tires.
Driving economically
Better driving economy can be obtained bythinking ahead, avoiding rapid starts and stopsand adjusting the speed of your vehicle to imme-diate traffic conditions.

Driving economically with the XC90 T8
Twin Engine Plug-in Hybrid
Plan your driving in order to utilize the electricmotor as much as possible.
An energy-conserving driving style lowers currentconsumption from the hybrid battery and helpsincrease electric driving range.

Charging
•Charge the hybrid battery regularly using thecharging cable. Whenever possible, begin adrive with a fully charged battery.
•Check the location of charging points.
•Where possible, choose parking spaces withcharging points.

STARTING AND DRIVING
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387
Driving through standing water
The vehicle should be driven with extreme cau-tion if it is necessary to drive through standingwater.
The vehicle can be driven through water up to adepth approximately level with the floor at walk-ing speed to help prevent water from enteringthe differential and/or the transmission or dam-aging electrical components.
•If possible, check the depth of the waterbefore driving through it. Take particular carewhen driving through flowing water.
•Before driving through water, always selectthe Off Road drive mode to ensure that thegasoline engine is running and to maximizeground clearance.
•After driving through water, apply the brakesand check that they are functioning correctly.
•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.

CAUTION
•Damage may occur to the engine, trans-mission, electrical components, etc. if thevehicle is driven through water higherthan its floor level. Be aware that wavescreated by other vehicles could cause thelevel to temporarily be above the vehicle'sfloor level.
•Damage to any components due to waterabove the floor level, vapor lock or insuffi-cient oil is not covered under warranty.
•If the engine has been stopped while thevehicle is in water, do not attempt torestart it. Have the vehicle towed out ofthe water and inspected by a trained andqualified Volvo service technician.

WARNING
•Avoid driving through standing or rushingwater. Doing so can be dangerous and itmay also be difficult to determine theactual depth of the water.
•If water cannot be avoided, after drivingthrough the water, press lightly on thebrake pedal to ensure that the brakes arefunctioning normally. Water or mud canmake the brake linings slippery, resultingin delayed braking effect.

Related information
•Towing recommendations (p. 389)
Overheating the engine andtransmission
In demanding driving conditions, such as whentransporting heavy loads, driving in mountainousareas or in very hot weather there is a risk ofoverheating the engine or transmission.
•The engine's output may be slightly limited ifthere is a risk of overheating.
•Remove e.g., auxiliary lights mounted in frontof the grille in hot weather.
•If the temperature of the engine coolantbecomes too high, the warning symbol willilluminate and the message Enginetemperature/Stop safely will be displayed.Stop the vehicle as soon as possible in asafe place and let the engine idle for severalminutes.
•If the message Engine temperature/Hightemperature Turn off engine or Enginecoolant/Stop safely is displayed, stopsafely and turn off the engine.
•If the transmission begins to overheat, analternative gear shifting program will beselected. An integrated protective functionwill also by activated, the warning symbol willilluminate and the message TransmissionwarmHigh temperature Reduce speedor Transmission warmStop safely, waitfor cooling will be displayed in the instru-ment panel.