2018 VOLVO XC90 check engine light

STARTING AND DRIVING
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443
the emission control system and could result in loss of emission warranty coverage. State andlocal vehicle inspection programs will makedetection of misfueling easier, possibly resultingin emission test failure 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 permits the use of the following "oxygen-ated" fuels. However, the specified octane ratingsmust 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/ETBE: Fuels containing up to 15% MTBE/ETBE 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. 443)
• Opening/closing the fuel filler door (p. 441)
• Refueling (p. 442)
• Emission controls (p. 445)
Octane rating Volvo demands premium fuel (91 octane 6
or
higher) for all T5, T6 and T8 engines. See both supplied decal examples.
6 AKI (Anti Knock Index) is an average value of RON (Research Octane Number) and MON (Motor Octane Number) - (RON)+(MON)/2

STARTING AND DRIVING
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* Option/accessory.451
The automatic transmission selects the optimal gear 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. 451)
• Checking trailer lights (p. 452)
• Towing capacity and tongue weight (p. 642)
• Overheating of engine and transmission (p. 446)
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.
8
Trailer Stability Assist
9 Electronic Stability Control

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STARTING AND DRIVING
* Option/accessory.
452 When Trailer Stability Assist is activated, the
ESC symbol is
displayed in the instrument panel.
Related information
• Driving with a trailer (p. 449)
• Electronic Stability Control (p. 272)
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.

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453
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. 449)
Towing using a towline
This section refers to one vehicle being towed behind another using a towline.
Before towing another vehicle, check applicable speed limit regulations.
Preparations and towing
CAUTION
Note that the vehicle must always be towed with the wheels rolling forward.
• Do not tow a vehicle with automatictransmission at a speed greater than80 km/h (50 mph) or for a distancegreater than 80 km (50 miles).
WARNING
•
Ignition mode
II must be active – all air-
bags are deactivated in ignition mode I.
• Always have the remote key in the vehicle when it is towed.
WARNING
The brake and steering servos do not work when the engine is off – it takesabout 5 times more pressure on the brakepedal and steering requires much more effortthan normal. 1. Turn on the hazard warning flashers.
2. Attach the towline to the towing eyelet.3.
Put the vehicle in ignition mode II – without
pressing the brake pedal, turn the start knob clockwise and hold it there for about4 seconds. Release the knob, which willautomatically return to its original position.
4. Move the gear selector to neutral ( N) and
release the parking brake. If the battery charge level is too low, it may not be possible to release the parking brake.Connect an auxiliary battery to the vehicle ifthe battery is discharged.
> The towing vehicle can now start driving.
5. Keep the towline taut when the towing vehi- cle slows down by applying light pressure to the brake pedal. This will help avoid jarringmovements.
6. Be prepared to apply the brakes to stop the vehicle.
Jump startingDo not tow the vehicle to start the engine. Use anauxiliary battery if the start battery's charge levelis so low that the engine cannot be started.

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WHEELS AND TIRES
* Option/accessory.
540
NOTE
Always remember to calibrate the Tire Pres- sure Monitoring System when the wheelshave been changed or the tire inflation pres-sure has been corrected according to the tirepressure decal or tire inflation pressure table. If correct reference values have not been set, the system cannot issue low tire pressurealerts correctly. The vehicle must be stationary with the engine running to access the calibration but-ton and to start the calibration process.
WARNING
The exhaust gases contain carbon monoxide, which is invisible and odorless but very poi-sonous. For this reason, always perform thecalibration procedure outdoors or in a work-shop with exhaust gas evacuation equipment.
Related information
• Recommended tire pressure (p. 537)
• Adjusting tire pressure (p. 536)
• Viewing tire pressure status in the center display
* (p. 540)
• Action when warned of low tire pressure (p. 541)
• Tire pressure monitoring system
* (p. 537)
Viewing tire pressure status in the
center display *
With the system for tire pressure monitoring, Tyre Pressure Monitoring System (TPMS), tirepressure status can be viewed in the center dis-play.
Checking status1. Open the Car status app in App view.
2.Tap TPMS to display the status of the tires.
Status indicator light
The graphic in the center display shows the sta- tus of each tire 8
.
Green tire:
• Inflation pressure is above the warning threshold.
Yellow tire:
• The tire's inflation pressure is too low. Stopand check/inflate the tire as soon as possi-ble. Recalibrate the system after adjustingthe tire pressure.
All tires yellow:
• The inflation pressure is too low in one ormore tires. Stop and check/inflate the tiresas soon as possible. Recalibrate the systemafter adjusting tire pressure.
All tires gray: • Calibration in progress.
• Status unknown.
8
The illustration is generic. Layout may vary depending on vehicle model or software version.

MAINTENANCE AND SERVICE
576
Volvo's service program
To keep the vehicle as safe and reliable as pos- sible, follow the Volvo service schedule speci-fied in the Warranty and Maintenance RecordsInformation booklet.
Volvo recommends having an authorized Volvo workshop perform service and maintenance.Volvo workshops have the staff, service literatureand special tools to guarantee the highest qualityof service.
CAUTION
To ensure the Volvo warranty is not invalida- ted, check and follow the Service and War-ranty Booklet.
IntroductionThe maintenance services contain several checks that require special instruments and tools andtherefore must be performed by a qualified tech-nician. To keep your Volvo in top condition, spec-ify time-tested and proven Genuine Volvo Partsand Accessories.
The Federal Clean Air Act - U.S.
The Federal Clean Air Act requires vehicle manu- facturers to furnish written instructions to the ulti-mate purchaser to assure the proper servicingand function of the components that controlemissions. These services, which are listed in the"Warranty and Service Records Information" booklet, are not covered by the warranty. You willbe required to pay for labor and material used.
Maintenance
Your Volvo passed several major inspections before it was delivered to you, in accordance withVolvo specifications. The maintenance proce-dures outlined in the Warranty and ServiceRecords Information booklet, many of which willpositively affect your vehicle's emissions, shouldbe performed as indicated. It is recommendedthat receipts for vehicle emission maintenance beretained in case questions arise concerningmaintenance. Inspection and maintenance shouldalso be performed anytime a malfunction isobserved or suspected.
Applicable warranties - U.S./Canada
In accordance with applicable U.S. and Canadian regulations, the following list of warranties is pro-vided.
• New Vehicle Limited Warranty
• Parts and Accessories Limited Warranty
• Corrosion Protection Limited Warranty
• Seat Belt and Supplemental Restraint Sys-tems Limited Warranty
• Emission Design and Defect Warranty
• Emission Performance Warranty
These are federal warranties. Other warrantiesare provided as required by state/provincial law.Refer to your separate Warranty and Service Records Information booklet for detailed informa-tion concerning each of the warranties.
Periodic maintenance helps minimize
emissions
NOTE
•
Refer to your Service and Warranty Book- let for a comprehensive service and main-tenance schedule up to 240,000 km(150,000 miles). This program containsinspections and services necessary forthe proper function of your vehicle andincludes components that affect vehicleemissions.
• The Warranty and Service Records Infor-mation booklet also contains detailedinformation concerning the warrantiesthat apply to your vehicle.
On-board Diagnostic SystemOBD II is part of your vehicle's computerized engine management system. It stores diagnosticinformation about your vehicle's emission con-trols. It can light the Check Engine light (MIL) if itdetects an emission control "fault." A "fault" is acomponent or system that is not performingwithin an expected range. A fault may be perma-nent or temporary. OBD II will store a messageabout any fault.

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Emission inspection readiness
How do states use OBD II for emission
inspections?
Many states connect a computer directly to a vehicle's OBD II system. The inspector can thenread "faults." In some states, this type of inspec-tion has replaced the tailpipe emission test.
How can my vehicle fail OBD II emission
inspection?
Your vehicle can fail OBD II emission inspection for any of the following reasons:
• If your Check Engine (MIL) light is lit, yourvehicle may fail inspection.
• If your vehicle's Check Engine light was lit,but went out without any action on your part,OBD II will still have a recorded fault. Yourvehicle may pass or fail, depending on theinspection practices in your area.
• If you had recent service that required dis-connecting the battery, OBD II diagnosticinformation may be incomplete and "notready" for inspection. A vehicle that is notready may fail inspection.
How can I prepare for my next OBD II
emission inspection?
• If your Check Engine (MIL) light is lit - or was lit but went out without service, have your vehicle diagnosed and, if necessary, servicedby a qualified Volvo technician.
• If you recently had service for a lit CheckEngine light, or if you had service thatrequired disconnecting the battery, a periodof driving is necessary to bring the OBD IIsystem to "ready" for inspection. Two half-hour trips of mixed stop-and-go/highwaydriving are typically needed to allow OBD II toreach readiness. Your Volvo retailer can pro-vide you with more information on planning atrip.
• Maintain your vehicle in accordance with yourvehicle's maintenance schedule.
Owner maintenancePeriodic maintenance requirements and intervalsare described in your vehicle's Warranty andService Records Information booklet. The following points can be carried out between the normally scheduled maintenance services.
Each time the car is refueled:
•Check the engine oil level.
• Clean the windshield, windshield wipers, headlights, and taillights.
Monthly:
• Check cold tire pressure in all tires. Inspect the tires for wear.
• Check that engine coolant and other fluidlevels are between the indicated "min" and"max" markings.
• Clean interior glass surfaces with a glasscleaner and soft paper towels.
• Wipe driver information displays with a softcloth.
• Visually inspect battery terminals for corro-sion. Corrosion may indicate a loose terminalconnector, or a battery near the end of itsuseful service life. Consult your Volvo retailerfor additional information.
As needed:
Wash the car, including the undercarriage, to reduce wear that can be caused by a buildup ofdirt, and corrosion that can be caused by salt res-idues. Clean leaves and twigs from air intake vents at the base of the windshield, and from other placeswhere they may collect.
NOTE
Complete service information for qualified technicians is available online for purchase orsubscription at www.volvotechinfo.com.

INDEX
650
B
Backrestfront seat, adjusting 188, 189, 192, 193 , 194
rear seat, adjusting 200, 201
rear seat, folding 196, 201, 202
Battery jump-start 447
Maintenance 598
start 598
support 601
symbols on the battery 602
warning symbols 602
BLIS 346, 347, 348, 349 Blower adjusting 228, 229
air distribution 212
air vents 213
Bluetooth connect 491
connecting vehicle to Internet 509
phone 498
settings 507
Book service and repair 580
Booster cushions 71 Brake assist after collision 417
Brake fluid
grade 645
Brake functions 408
Brake light 163
Brakes 409 anti-lock brakes, ABS 409
automatic when stationary 415
Brake Assist System, BAS 410
brake lights 163
brake system 408
emergency brake lights 163
handbrake 411
Maintenance 411
on salted roads 411
on wet roads 410
brake system fluid 645
C
Camera sensor 342
Camera unit 329
Capacity weight 556, 641
Cargo compartment 564
attachment points 567
cargo net 571
electrical outlet 560, 562
Lighting 166
Cargo compartment cover 567, 568
cargo net 571
Car wash 620, 621, 623, 624, 625, 626
Catalytic converter 445 recovery 453
CD player 489
Cell phone, see Phone 499
Center console 559Center display change appearance 133
cleaning 615
climate controls 217
Function view 124
keyboard 128
messages 142, 143, 144
operation 114, 117, 121, 126
overview 111
settings 134, 135, 136
switch off and change volume 133
symbols in status bar 126
views 117
Central locking 255
Change of owner 136
Changing a wheel 542
Checking engine oil level 589