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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.
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Opening/closing the fuel filler door
The fuel tank has a filling system that does nothave a cover.
Opening/closing the fuel filler door
An arrow next to the fuel pumpsymbol in the instrument panelindicates the side of the vehiclewhere the fuel filler door islocated.
1. Press the button on the lighting panel.
>Pressure equalization in the fuel tank cau-ses a slight delay before the fuel fillerdoor opens. Fuel tank Fuel lid isopening will be displayed in the instru-ment panel, followed by Fuel tank Readyfor refueling.
2.After refueling, close the fuel filler door bypressing lightly.
Refueling from a service station pump
To refuel:
1.Open the fuel filler door. Do not refuel with
the engine running1
2. Insert the pump's nozzle into the fuel fillerpipe's opening as far as possible (see theillustration).
3. Avoid overfilling the fuel tank. Do not pressthe handle on the filler nozzle after it hasstopped pumping. Too much fuel in the tankin hot weather conditions can cause the fuelto overflow. Overfilling could also cause dam-age to the emission control systems.
1If the engine is running when the vehicle is refueled, the Check Engine Light (malfunction indicator lamp) may indicate a fault. However, your vehicle's performance will not be affected.
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Jump starting
Follow the instructions provided here to jumpstart your vehicle or to jump start another vehi-cle.
Jumper cable connecting terminals
NOTE
The vehicle cannot be started if the hybridbattery is discharged.
CAUTION
The vehicle's jumper cable connecting termi-nals may only be used to start your vehicle.They are not intended to be used to help startanother vehicle. If they are used to startanother vehicle, a fuse may blow and the ter-minal will not function.
If a fuse blows, 12 V Battery Fuse failureService required will be displayed in the instru-ment panel. Contact a trained and qualified Volvoservice technician.
Use the following steps when jump starting yourvehicle to help prevent short circuits or otherdamage.
1.Switch the ignition off completely (mode 0).
2.Ensure that the auxiliary battery to be used is12-volt.
3. If the 12-volt auxiliary battery to be used is inanother vehicle, switch off that vehicle's igni-tion and be sure that the vehicles are nottouching each other.
4. Connect one of the red jumper cable'sclamps to the auxiliary battery's positive (+)terminal (1).
CAUTION
Connect the jumper cables carefully to avoidshort circuits with other components in theengine compartment.
5. Open the cover over the positive (+) jumpstart terminal (2).
6.Connect the red jumper cable's other clampto your vehicle's positive (+) jump start termi-nal (2).
7. Connect one of the black jumper cable'sclamps to the auxiliary battery's negative (–)terminal (3).
8. Connect the black jumper cable's otherclamp to your vehicle's negative (–) jumpstart terminal (4).
9. Check that the jumper cables are securelyattached to help avoid sparks when the vehi-cle is started.
10. Start the engine in the assisting vehicle andrun it for a short time at approx. 1,500 rpm.
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Driving with a trailer
When towing a trailer, always observe the legalrequirements of the state/province.
•All Volvo models are equipped with energy-absorbing shock-mounted bumpers. Trailerhitch installation should not interfere with theproper operation of this bumper system.
Trailer towing does not normally present any par-ticular problems, but take into consideration:
•Increase tire pressure to recommended fullpressure.
•When your vehicle is new, avoid towing heavytrailers during the first 620 miles (1,000 km).
•Maximum speed when towing a trailer:50 mph (80 km/h).
•Engine and transmission are subject toincreased loads. Therefore, engine coolanttemperature should be closely watched whendriving in hot climates or hilly terrain. Use alower gear and turn off the air conditioner ifthe temperature gauge needle enters the redrange.
•If the automatic transmission begins to over-heat, a message will be displayed in the textwindow.
•Avoid overload and other abusive operation.
•Hauling a trailer affects handling, durability,and economy.
•It is necessary to balance trailer brakes withthe towing vehicle brakes to provide a safestop (check and observe state/local regula-tions).
•Do not connect the trailer's brake systemdirectly to the vehicle's brake system.
•More frequent vehicle maintenance isrequired.
•Remove the ball holder when the hitch is notbeing used.
NOTE
•When parking the vehicle with a trailer ona hill, apply the parking brake before put-ting the gear selector in P. Always followthe trailer manufacturer's recommenda-tions for wheel chocking.
•When starting on a hill, put the gearselector in D before releasing the parkingbrake.
•If you use the manual (Geartronic) shiftpositions while towing a trailer, make surethe gear you select does not put toomuch strain on the engine (using toohigh a gear).
•The drawbar assembly/trailer hitch maybe rated for trailers heavier than the vehi-cle is designed to tow. Please adhere toVolvo's recommended trailer weights.
•Avoid driving with a trailer on inclines ofmore than 15%.
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How TSA works
Once swaying has begun, it can be very difficultto stop, which makes it difficult to control thevehicle and trailer.
The TSA system continuously monitors the vehi-cle's movements, particularly lateral movement. Ifthe system detects a tendency to sway, thebrakes are applied individually on the frontwheels, which has a stabilizing effect on the vehi-cle and trailer. This is often enough to enable thedriver to regain control of the vehicle.
If this is not adequate to stop the swaying motion,the brakes are applied to all of the wheels on thevehicle and on the trailer if it is equipped withbrakes, and engine power is temporarily reduced.As the swaying motion begins to decrease andthe vehicle-trailer have once again become sta-ble, TSA will now stop regulating the brakes/engine power and the driver regains control ofthe vehicle.
TSA is deactivated if the driver deactivates ESCin the center display's menu system.
When the ESC symbol in theinstrument panel flashes, TSAis active.
Related information
•Detachable trailer hitch (p. 398)
•Driving with a trailer (p. 397)
•Electronic Stability Control (ESC) (p. 263)
Ignition modes
The vehicle's ignition can be put in variousmodes (levels) to make different functions availa-ble.
The vehicle's ignition has 3 modes: 0, I, and IIthat can be used to operate various functionswithout starting the engine. The following tableshows examples of which functions are availablein the respective modes.
STARTING AND DRIVING
* Option/accessory, for more information, see Introduction.401
ModeFunctions available
0•The odometer, clock and tem-perature gauge are illuminated
•Power seats* can be adjusted
•The power windows can be oper-ated
•The 12-volt socket in the cargocompartment can be used
•The center display is activatedand can be used
•The infotainment system can beused for a limited time
In this mode, certain functions canonly be used for a limited time to helpminimize battery drain
I•The laminated panoramic roof*,power seats*/windows,12-voltsockets in the passenger com-partment, Bluetooth, navigationsystem*, climate system blower,windshield wipers can be oper-ated
•The infotainment system will start(if it was started when the ignitionwas switched off)
Using electrical current will drainthe start battery in this mode.
ModeFunctions available
II•The headlights illuminate
•Warning/indicator lights illumi-nate for 5 seconds
•A number of other functions willalso be activated. However, theheated seats* and heated rearwindow functions can only beactivated when the engine is run-ning.
This mode should only be used forvery short periods to help avoiddraining the battery.
Selecting an ignition mode
Start knob in the tunnel console
•Ignition mode 0: unlock the vehicle andkeep the remote key in the passenger's com-partment.
NOTE
To access ignition modes I or II without star-ting the engine, the brake pedal must not bedepressed when these modes are selected.
•Ignition mode I: Turn the start knob toSTART and release it. The knob will returnautomatically to its original position.
•Ignition mode II: Turn the start knob toSTART and hold it there for approx.4 seconds. Release the knob.
•Returning to ignition mode 0: To return tomode 0 from mode II or I, turn the start knobto STOP and release it.
Related information
•Starting the engine (p. 402)
•Turning the engine off (p. 404)
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WARNING
•Never use more than one floor mat at atime on the driver's floor. Before driving,remove the original mat from the driver'sseat floor before using any other type offloor mat. Any mat used in this positionshould be securely and properly anchoredin the attaching pins. An extra mat on thedriver's floor can cause the acceleratorand/or brake pedal to catch. Check thatthe movement of these pedals is notimpeded.
•Volvo's floor mats are specially manufac-tured for your car. They must be firmlysecured in the clips on the floor so thatthey cannot slide and become trappedunder the pedals on the driver's side.
During normal starts, the electric motor is priori-tized and the gasoline engine will not start. Thismeans that when the start knob has been turnedtoward START and released, the electric motor isactivated ("started") and the vehicle is ready tobe driven. The warning and information symbolsin the instrument panel will go out and thechosen theme will be displayed to indicate thatthe electric motor has been activated.
However, in certain situations, such as in coldweather or if the hybrid battery is not sufficientlycharged, the gasoline engine will start instead.
NOTE
The vehicle cannot be started if the hybridbattery is discharged.
Back-up reader in the tunnel console
If Vehicle key not found is displayed in theinstrument panel, place the remote key in theback-up reader in the tunnel console (see theillustration) and try again to start the engine.
NOTE
When the remote key is in the back-upreader, be sure there are no other metallicobjects (e.g., other keys, coins, cell phones) inthe cup holder. This could affect the back-upreader's function.
If Vehicle start System check, wait is dis-played in the instrument panel when you try to
start the vehicle, wait until the message is nolonger displayed and try to start again.
CAUTION
If the engine does not start after the third try,wait for approximately 3 minutes before tryingto start it again to give the battery time torecover its starting capacity.
WARNING
•Always remove the remote key from thepassenger compartment when leaving thevehicle and ensure that the ignition inmode 0.
•On vehicles with the optional PassiveEntry, never remove the remote key fromthe vehicle while it is being driven ortowed.
•Always place the gear selector in Parkand apply the parking brake before leav-ing the vehicle. Never leave the vehicleunattended with the engine running.
•Always open garage doors fully beforestarting the engine inside a garage toensure adequate ventilation. The exhaustgases contain carbon monoxide, which isinvisible and odorless but very poisonous.
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Hybrid-related symbols andmessages
A number of symbols and messages relating tothe XC90 T8 Twin Engine Plug-in Hybrid may
appear in the instrument panel. They may alsobe displayed in combination with general indica-tor and warning symbols and will go out whenthe necessary action has been taken.
SymbolMessageExplanation
12 V Battery
Charging fault, service urgent. Driveto workshop
Battery fault. Contact a Volvo retailer or a trained and qualified Volvo service technician as soon aspossible.
12 V Battery
Charging fault Stop safely
Battery fault. Stop the vehicle as soon as possible and contact a Volvo retailer or a trained andqualified Volvo service technician.
12 V Battery
Low charge, temporarily reducedfunctionality
The hybrid battery's charge level is too low for optimal driving. Charge the battery as soon as possi-ble.
12 V Battery
Charging fault, low battery. Stopsafely
The hybrid battery is not sufficiently charged. Stop the vehicle as soon as possible and charge thebattery.
12 V Battery
Fuse failure Service required
Battery failure. Contact a Volvo retailer or a trained and qualified Volvo service technician as soon aspossible to have the system checked.
Hybrid battery
Overheated, stop safely
Battery temperature too high/too low. Stop the vehicle and turn off the engine. If the messageremains after the engine has been restarted, contact a Volvo retailer or a trained and qualified Volvoservice technician.