2017 VOLVO XC90 T8 check engine

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* Option/accessory.
378
Vehicle with pneumatic suspension *
If the vehicle is equipped with the optional pneu- matic suspension, this feature must be deacti-vated before the vehicle is lifted onto a tow truck. To do so:1.
Tap
Settings in the center display's Top
view.
2. Tap
My CarSuspension .
3. Select
Disable Leveling Control.
Jump startingDo not attempt to start the engine by towing the vehicle. This could result in damage to the three-way catalytic converter and the electric motor.Use a 12-volt auxiliary battery or one in anothervehicle.
WARNING
PROPOSITION 65 WARNING! Battery posts, terminals, and related accesso- ries contain lead and lead compounds, chemi-cals known to the state of California to causecancer and reproductive harm. Wash handsafter handling.
CAUTION
Connect the jumper cables carefully to avoid short circuits with other components in theengine compartment.
WARNING
• Do not connect the jumper cable to any part of the fuel system or to any movingparts. Avoid touching hot manifolds.
• Batteries generate hydrogen gas, whichis flammable and explosive.
• Battery fluid contains sulfuric acid. Do notallow battery fluid to contact eyes, skin,fabrics or painted surfaces. If contactoccurs, flush the affected area immedi-ately with water. Obtain medical helpimmediately if eyes are affected.
• Never expose the battery to open flameor electric spark.
• Do not smoke near the battery.
• Failure to follow the instructions for jumpstarting can lead to injury.
Related information
• Towing eyelet (p. 376)
• Jump starting (p. 382)
• Parking brake (p. 369)
• Ignition modes (p. 389)
Fuel Volvo recommends the use of detergent gaso- line to control engine deposits.
Deposit control gasoline (detergent
additives)
Detergent gasoline is effective in keeping injec- tors and intake valves clean. Consistent use ofdeposit control gasolines will help ensure gooddrivability and fuel economy. If you are not surewhether the gasoline contains deposit controladditives, check with the service station operator.
NOTE
Volvo does not recommend the use of exter- nal fuel injector cleaning systems.
Unleaded fuelEach Volvo has a three-way catalytic converter and must use only unleaded gasoline. U.S. andCanadian regulations require that pumps deliver-ing unleaded gasoline be labeled "UNLEADED".Only these pumps have nozzles which fit yourvehicle's filler inlet. It is unlawful to dispense lea-ded fuel into a vehicle labeled "unleaded gaso-line only". Leaded gasoline damages the three-way catalytic converter and the heated oxygensensor system. Repeated use of leaded gasolinewill lessen the effectiveness of the emission con-trol system and could result in loss of emissionwarranty coverage. State and local vehicle

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inspection programs will make detection of mis- fueling easier, possibly resulting in emission testfailure for misfueled vehicles.
NOTE
Some U.S. and Canadian gasolines contain an octane enhancing additive called methyl-cyclopentadienyl manganese tricarbonyl(MMT). If such fuels are used, your EmissionControl System performance may be affected,and the Check Engine Light (malfunctionindicator light) located on your instrumentpanel may light. If this occurs, please returnyour vehicle to a trained and qualified Volvoservice technician for service.
Gasoline containing alcohol and ethers, "Oxygenated fuels"
Some fuel suppliers sell gasoline containing "oxygenates" which are usually alcohols orethers. In some areas, state or local laws requirethat the service pump be marked indicating useof alcohols or ethers. However, there are areas inwhich the pumps are unmarked. If you are notsure whether there is alcohol or ethers in thegasoline you buy, check with the service stationoperator. To meet seasonal air quality standards,some areas require the use of "oxygenated" fuel. Volvo allows the use of the following "oxygen- ated" fuels; however, the octane ratings listedmust still be met.
Alcohol – Ethanol
Fuels containing up to 10% ethanol by volume may be used. Ethanol may also be referred to asEthyl alcohol, or "Gasohol". Ethers – MTBE: Fuels containing up to 15% MTBE may be used.
MethanolDo not use gasolines containing methanol(methyl alcohol, wood alcohol). This practice canresult in vehicle performance deterioration andcan damage critical parts in the fuel system. Suchdamage may not be covered under the NewVehicle Limited Warranty.
Related information
•
Octane rating (p. 379)
• Opening/closing the fuel filler door (p. 380)
Octane rating Volvo requires premium fuel (91 octane or above) for best performance.
Minimum octane
Sample fuel pump octane label
TOP TIER Detergent GasolineVolvo endorses the use of “TOP TIER Detergent Gasoline” where available to help maintain engineperformance and reliability. TOP TIER DetergentGasoline meets a new standard jointly estab-lished by leading automotive manufactures tomeet the needs of today

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2. After refueling, close the fuel filler door by
pressing lightly.
Refueling from a service station pump
To refuel:
1. Open the fuel filler door. Do not refuel with
the engine running 1
2. Insert the pump's nozzle into the fuel filler pipe's opening as far as possible (see the
illustration).
3. Avoid overfilling the fuel tank. Do not press the handle on the filler nozzle after it has stopped 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.
CAUTION
Avoid spilling gasoline during refueling. In addition to causing damage to the environ-ment, gasolines containing alcohol can causedamage to painted surfaces, which may notbe covered under the New Vehicle LimitedWarranty.
Related information
• Fuel (p. 378)
• Octane rating (p. 379)
Emission controls
Three-way catalytic converter
•Keep your engine properly tuned. Certain engine malfunctions, particularly involving theelectrical, fuel or distributor ignition systems,may cause unusually high three-way catalyticconverter temperatures. Do not continue tooperate your vehicle if you detect enginemisfire, noticeable loss of power or otherunusual operating conditions, such as engineoverheating or backfiring. A properly tunedengine will help avoid malfunctions thatcould damage the three-way catalytic con-verter.
• Do not park your vehicle over combustiblematerials, such as grass or leaves, which cancome into contact with the hot exhaust sys-tem and cause such materials to ignite undercertain wind and weather conditions.
• Excessive starter cranking (in excess of oneminute), or an intermittently firing or floodedengine can cause three-way catalytic con-verter or exhaust system overheating.
• Remember that tampering or unauthorizedmodifications to the engine, the Engine Con-trol Module, or the vehicle may be illegal andcan cause three-way catalytic converter orexhaust system overheating. This includes:altering fuel injection settings or compo-nents, altering emission system components
1
If 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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383
1.
Switch the ignition off completely (mode 0).
2. Ensure that the auxiliary battery to be used is 12-volt.
3. If the 12-volt auxiliary battery to be used is in another 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's clamps to the auxiliary battery's positive (+)terminal (1).
CAUTION
Connect the jumper cables carefully to avoid short 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 clamp to your vehicle's positive (+) jump start termi- nal (2).
7. Connect one of the black jumper cable's clamps to the auxiliary battery's negative (–)terminal (3).
8. Connect the black jumper cable's other clamp to your vehicle's negative (–) jumpstart terminal (4). 9. Check that the jumper cables are securely
attached to help avoid sparks when the vehi-cle is started.
10. Start the engine in the assisting vehicle and run it for a short time at approx. 1,500 rpm.
11. Start the engine in your vehicle. If the vehicle does not start, allow an additional10 minutes of charging time and then try tostart the engine again.
NOTE
During normal starts, the electric motor is pri- oritized and the gasoline engine will not start.This means that when the start knob has been turned toward START and released, the
electric motor is activated ("started") and the vehicle is ready to be driven. The warning andinformation symbols in the instrument panelwill go out and the chosen theme will be dis-played to indicate that the electric motor hasbeen activated.
CAUTION
Do not touch the jumper cable connections while the vehicle is being started. This couldgenerate sparks.
12. After the vehicle has started, carefully remove the jumper cables in reverse order, beginning with the black one. Ensure that the black jumper cable's clamps do not come in contact with the vehicle's orthe auxiliary battery's positive terminals orthe red jumper cable's clamps while it is con-nected.
WARNING
PROPOSITION 65 WARNING! Battery posts, terminals, and related accesso- ries contain lead and lead compounds, chemi-cals known to the state of California to causecancer and reproductive harm. Wash handsafter handling.
WARNING
• Do not connect the jumper cable to any part of the fuel system or to any movingparts. Avoid touching hot manifolds.
• Batteries generate hydrogen gas, whichis flammable and explosive.
• Battery fluid contains sulfuric acid. Do notallow battery fluid to contact eyes, skin,fabrics or painted surfaces. If contactoccurs, flush the affected area immedi-ately with water. Obtain medical helpimmediately if eyes are affected.

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•Never expose the battery to open flame or electric spark.
• Do not smoke near the battery.
• Failure to follow the instructions for jumpstarting can lead to injury.
Related information
•
Ignition modes (p. 389)
• Starting the engine (p. 390)
• Turning the engine off (p. 393)
• Start battery (p. 506)
• Opening and closing the hood (p. 533)
• Charging the hybrid battery (p. 403)
Driving with a trailer
When towing a trailer, always observe the legal requirements 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.

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NOTE
•When parking the vehicle with a trailer on a hill, apply the parking brake before put- ting the gear selector in
P. Always follow
the trailer manufacturer's recommenda- tions for wheel chocking.
• When starting on a hill, put the gear selector in
D before releasing the parking
brake.
• If you use the manual (Geartronic) shift positions 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%.
CAUTION
The maximum trailer weights listed are only applicable for altitudes up to 3,280 ft(1000 m) above sea level. With increasingaltitude the engine power and therefore thecar's climbing ability are impaired because ofthe reduced air density, so the maximumtrailer weight has to be reduced accordingly.The weight of the vehicle and trailer must bereduced by 10% for every further 3,280 ft(1,000 m) (or part thereof). When towing5,000 lbs (2,250 kg) hill inclination is restric-ted to 14%.
WARNING
• 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.
Trailer turn signals and brake lightsIf one (or more) of the bulbs on a trailer is defec-tive, a symbol and a message will be displayed inthe instrument panel. The other lights on the trailer must be checked manually by the driver before the vehicle is driven.See the subsection "Manual check" in the follow-ing section "Trailer lamp check".

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* Option/accessory.
386
Symbol Message
•Trailer turn indicator Right
turn indicator malfunction
•Trailer turn indicator Left
turn indicator malfunction
•Trailer brake light Malfunc-
tion
If one of the trailer's turn signal bulbs is defective, the turn signal symbol in the instrument panel forthe respective sides of the vehicle will also flashfaster than normal.
Trailer lamp check *
Automatic check
When the trailer has been connected to the vehi- cle's electrical system, its lamps can be checkedby automatically activating them. This helps thedriver to ensure that the trailer's lamps are func-tioning correctly before starting to drive. In order to perform this check, the engine must not be running.
1. When a trailer is connected to a trailer hitch
or towbar,
Automatic Trailer Lamp Checkwill appear in the instrument panel. 2.
Confirm this message by pressing the O but-
ton on the right-side steering wheel keypad.
> The lamp check will begin.
3. Leave the vehicle to perform the trailer lamp check.
> All of the trailer's lamps will begin to flashand then each lamp will illuminate one at a time.
4. Visually check that all of the trailer's lamps are functioning correctly.
5. After a short time, all of the trailer's lamps will begin to flash again.
> The lamp check is completed.
Disabling the automatic check
The automatic lamp check function can be disa- bled in the center display. 1.Tap
Settings in Top view.
2. Tap
My CarLights and Lighting.
3. Deselect
Automatic Trailer Lamp Check.
Manual check
If the automatic lamp check has been disabled, the function can be started manually. 1.Tap
Settings in Top view.
2. Tap
My CarLights and Lighting. 3.
Select
Manual Trailer Lamp Check.
> The lamp check will begin. Leave the vehi- cle to perform the trailer lamp check as described in the section "Automaticcheck" above.
Self-leveling suspension *The self-leveling system attempts to keep thevehicle at a constant level, regardless of the load(up to the max. permissible load). When theengine is not running, the rear of the vehiclesinks down slightly, which is normal.
Related information
•Detachable trailer hitch
* (p. 387)
• Trailer Stability Assist (TSA) (p. 388)
• Weights (p. 557)

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NOTE
To access ignition modes I or II without star-
ting the engine, the brake pedal must not be
depressed when these modes are selected.
• Ignition mode I
: Turn the start knob to
START and release it. The knob will return
automatically to its original position.
• Ignition mode II
: Turn the start knob to
START and hold it there for approx.
4 seconds. Release the knob.
• Returning to ignition mode 0
: To return to
mode 0 from mode II or I, turn the start knob
to STOP and release it.
Related information
•Starting the engine (p. 390)
• Turning the engine off (p. 393)
Battery drain Your vehicle's electrical functions drain the bat- tery to varying extents.
Avoid using ignition mode
II as much as posssi-
ble, or electrical functions that require a great deal of electrical current when the engine is notrunning. Using ignition mode I whenever possible con-
sumes less electrical current. Functions that require a great deal of electrical current include:
• the climate system blower
• headlights
• wipers
• infotainment system (especially at high vol-ume).
If the battery's charge level is low, a text messagewill appear in the instrument panel. The vehicle'senergy-saving function will then turn off orreduce certain functions that are currently con-suming electrical current. If the battery needs to be recharged, start the engine and let it idle for at least 15 minutes ordrive the vehicle (driving charges the batteryfaster than letting the engine idle).
Related information
• Ignition modes (p. 389)
Starting the engine
The engine can be started using the start knob on the tunnel console if there is a remote key inthe passenger compartment.
Start knob in the tunnel console between the front seats (generic illustration)
WARNING
Before starting the engine:
• Fasten the seat belt.
• Check that the seat, steering wheel and mirrors are adjusted properly.
• Make sure the brake pedal can bedepressed completely. Adjust the seat ifnecessary.