2014 VOLVO XC90 check engine

06 Starting and driving
Fuel requirements
06
140
WARNING
Driving with the tailgate open: Driving
with the tailgate open could lead to poi- sonous exhaust gases entering the pas-senger compartment.
• If the tailgate must be kept open for any reason, proceed as follows:
• Close the windows
• Set the ventilation system control to airflow to floor, windshield and side win-dows and blower control to its highestsetting.
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 lawsrequire that the service pump be marked indi-cating use of alcohols or ethers. However,there are areas in which the pumps areunmarked. If you are not sure whether there isalcohol or ethers in the gasoline you buy,check with the service station operator. Tomeet seasonal air quality standards, someareas require the use of "oxygenated" fuel. Volvo allows the use of the following "oxy- genated" fuels; however, the octane ratingslisted on page 139 must still be met.
Alcohol – EthanolFuels containing up to 10% ethanol by vol- ume may be used. Ethanol may also be refer-red to as Ethyl 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 practicecan result in vehicle performance deteriora-tion and can damage critical parts in the fuelsystem. Such damage may not be coveredunder the New Vehicle Limited Warranty.
Weight distribution affects handlingAt the specified curb weight your vehicle hasa tendency to understeer, which means thatthe steering wheel has to be turned morethan might seem appropriate for the curva-ture of a bend. This ensures good stability and reduces the risk of rear wheel skid. Remember that theseproperties can alter with the vehicle load. The heavier the load in the cargo area, the less the tendency to understeer.
Handling, roadholdingVehicle load, tire design and inflation pres-sure all affect vehicle handling. Therefore,check that the tires are inflated to the recom- mended pressure according to the vehicleload. See "Tire pressure" section. Loads should be distributed so that capacity weight or maximum permissible axle loadsare not exceeded.
Conserving electrical currentKeep the following in mind to help minimizebattery drain:
• When the engine is not running, avoid turning the ignition key to position
II (see
page 145). Many electrical systems (theaudio system, the optional infotainment/navigation systems, power windows, etc)will function with the ignition key in posi-tion I. This position reduces drain on the
battery.
• Please keep in mind that using systems,accessories, etc that consume a greatdeal of current when the engine is notrunning could result in the battery beingcompletely drained. Driving or having theengine running for approximately15 minutes will help keep the batterycharged.
NOTE
A warning message will be displayed in the text window in the instrument panel whenthe battery charge is low.

06 Starting and driving
Refueling
06
142
CAUTION
•Do not refuel with the engine running 1
.
Turn the ignition off or to position I. If
the ignition is on, an incorrect reading could occur in the fuel gauge.
• After refueling, close the fuel filler capby turning it clockwise until it clicks into place 1
.
• Avoid overfilling the fuel tank. Do not press the handle on the filler nozzlemore than one extra time. Too muchfuel in the tank in hot weather condi-tions can cause the fuel to overflow.Overfilling could also cause damage tothe emission control systems.
• Avoid spilling gasoline during refueling.In addition to causing damage to theenvironment, gasolines containingalcohol can cause damage to paintedsurfaces, which may not be coveredunder the New Vehicle Limited War-ranty.
• Do not use gasolines containing meth-anol (methyl alcohol, wood alcohol).This practice can result in vehicle per-formance deterioration and can dam-age critical parts in the fuel system.Such damage may not be covered
under the New Vehicle Limited War- ranty.
1
If the fuel filler cap is not closed tightly or 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. Use only Volvo original or approved fuel filler caps.

06 Starting and driving
Starting the vehicle
06
143
Starting the engine
WARNING
Before starting, check that the seat, steer- ing wheel and mirrors are adjusted prop-erly. Make sure the brake pedal can bedepressed completely. Adjust the seat ifnecessary, see page 104.
1. Fasten the seat belt.
2. Apply the parking brake (hand brake) ifnot already set. The gear selector is locked in the P position (SHIFTLOCK).
3. Without touching the accelerator pedal, turn the ignition key 1
to the starting posi-
tion. Allow the starter to operate for up to10 seconds. Release the key as soon as the engine starts 2
. If the engine fails to
start, repeat this step.
CAUTION
If the engine does not start after the third try, wait for approximately 3 minutesbefore trying to start it again to give thebattery time to recover its startingcapacity.
WARNING
• Never use more than one floor mat at a time on the driver's floor. An extramat on the driver's floor can cause theaccelerator and/or brake pedal tocatch. Check that the movement ofthese pedals is not impeded.
• Volvo's floor mats are specially manu-factured for your car. They must befirmly secured in the clips on the floorso that they cannot slide and becometrapped under the pedals on the driv-er's side.
NOTE
•If the key blade section of the remote is not fully folded out when starting thevehicle, the immobilizer function maymake it impossible to start the engine.
• After a cold start, idle speed may benoticeably higher than normal for ashort period. This is done to help bringcomponents in the emission controlsystem to their normal operating tem-perature as quickly as possible, whichenables them to control emissions andhelp reduce the vehicle's impact onthe environment.
• To release the gear selector from the
P
(Park) position, the engine must berunning (or the ignition key must be inposition II) and the brake pedal must
be depressed.
• Select the desired gear. The gearengages after a very slight delay whichis especially noticeable when selecting R.
1
If two of the keys to your vehicle are close together, e.g. on the same key ring when you try to start the vehicle, this could cause interference in the immobilizer system and result in the vehicle not starting. If this should occur, remove one of the keys from the key ring before trying to start the vehicle again.
2 On vehicles equipped with the autostart feature, release the key immediately. See also page 145.

06 Starting and driving
Economical driving
06
146
Economical driving conserves natural resources
Better driving economy may be obtained by thinking ahead, avoiding rapid starts andstops and adjusting the speed of your vehicleto immediate traffic conditions. Observe thefollowing rules:
• Bring the engine to normal operating tem- perature as soon as possible by drivingwith a light foot on the accelerator pedalfor the first few minutes of operation. Acold engine uses more fuel and is subjectto increased wear.
• Whenever possible, avoid using the vehi-cle for driving short distances. This doesnot allow the engine to reach normaloperating temperature.
• Drive carefully and avoid rapid accelera-tion and hard braking.
• Use the transmission's
D (Drive) position
as often as possible and avoid using"kickdown" to help improve fuel econ-omy.
• Do not exceed posted speed limits.
• Avoid carrying unnecessary items (extraload) in the vehicle.
• Maintain correct tire pressure. Check tirepressure regularly (when tires are cold).
• Remove snow tires when threat of snowor ice has ended. •
Note that roof racks, ski racks, etc,increase air resistance and also fuel con-sumption.
• At highway driving speeds, fuel consump-tion will be lower with the air conditioningon and the windows closed than with theair conditioning off and the windowsopen.
• Using the onboard trip computer's fuelconsumption modes can help you learnhow to drive more economically.
Other factors that decrease gas mileage are: • Dirty air cleaner
• Dirty engine oil and clogged oil filter
• Dragging brakes
• Incorrect front end alignment.
Some of the above mentioned items and oth- ers are checked at the standard MaintenanceService intervals.
CAUTION
Drive slowly and carefully if going through standing water (i.e. flooded roadways,etc.). Damage to the engine could result ifexcess water is drawn in through the airintake system. Never drive the vehicle inwater deeper than 18 inches (48 cm).

06 Starting and driving
Jump starting
06
152
G030860
Follow these instructions to jump start your vehicle's dead battery or to jump startanother vehicle's dead battery using yourvehicle. Although your vehicle's battery islocated under the floor of the cargo area,jumper cables should be connected in theengine compartment, to the points shown in
the illustrations. If the 12-volt auxiliary battery to be used is in another vehicle, check that the vehicles arenot touching to prevent premature comple-tion of a circuit. Be sure to follow jump star-ting instructions provided for the other vehi-cle.
To jump start your vehicle:1. Switch off the ignition.
2. First connect the auxiliary battery positive (+) terminal (1) to the positive (+) terminal in your vehicle's engine compartment (2),located under a small black plastic coverattached to the fuse box cover, markedwith a "+" sign. Remove the cover on themain fuse box if necessary to access thisterminal. Then connect the auxiliary bat-tery's negative (–) terminal (3) to theground point in your vehicle's enginecompartment (4).
3. Start the engine in the assisting vehicle, then start the engine in the vehicle withdead battery.
4. After the engine has started, first remove the negative (–) terminal jumper cable.Then remove the positive (+) terminaljumper cable.
WARNING
PROPOSITION 65 WARNING! Battery posts, terminals, and related accessories contain lead and lead com-pounds, chemicals known to the state ofCalifornia to cause cancer and reproduc-tive harm. Wash hands after handling.
WARNING
•Do not connect the jumper cable to any part of the fuel system or to anymoving parts. Avoid touching hotmanifolds.
• Never expose the battery to openflame or electric spark.
• Do not smoke near the battery.
• Batteries generate hydrogen gas,which is flammable and explosive.
• Battery fluid contains sulfuric acid. Donot allow battery fluid to contact eyes,skin, fabrics or painted surfaces. Ifcontact occurs, flush the affected areaimmediately with water. Obtain medi-cal help immediately if eyes are affec-ted.
• Failure to follow the instructions forjump starting can lead to personalinjury.

06 Starting and driving
Brake system
06
154* Option/accessory, for more information, see Introduction.
BRAKE Brake circuit malfunction
The brake system is a hydraulic system con- sisting of two master cylinders and two sepa-rate brake circuits. If a problem should occurin one of these circuits, it is still possible tostop the vehicle with the other brake circuit. If the brake pedal must be depressed farther than normal and requires greater foot pres-sure, the stopping distance will be longer. A warning light in the instrument panel will light up to warn the driver that a fault hasoccurred. If this light comes on while driving or braking, stop immediately and check the brake fluidlevel in the reservoir.
NOTE
Press the brake pedal hard and maintain pressure on the pedal – do not pump thebrakes.
WARNING
If the fluid level is below the MIN mark in
the reservoir or if a BRAKE FAILURE
STOP SAFELY message is displayed in
the text window: DO NOT DRIVE. Have
the vehicle towed to a trained and qualified Volvo service technician and have thebrake system inspected.
NOTE
When the vehicle is at a standstill and the engine is idling, e.g. at a traffic light andthe brake pedal is depressed, the pedalmay go down slightly. This is a normalfunction of the power-assisted brake sys-tem.
Brake pad inspectionOn vehicles equipped with a jack*, the condi- tion of the brake pads can be checked byraising the vehicle (see page 198 for informa-tion about using the jack and removing awheel) and performing a visual inspection ofthe brake pads.
WARNING
• If the vehicle has been driven immedi- ately prior to a brake pad inspection,the wheel hub, brake components,etc., will be very hot. Allow time forthese components to cool before car-rying out the inspection.
• Apply the parking brake and put thegear selector in the Park (
P) position.
• Block the wheels standing on theground, use rigid wooden blocks orlarge stones.

06 Starting and driving
Brake system
06
155
WARNING
•Use the jack intended for the vehicle when changing a tire. For any otherjob, use stands to support the vehicle.
• The jack should be kept well-greasedand clean, and should not be dam-aged.
• Be sure the jack is on a firm, level,non-slippery surface.
• No objects should be placed betweenthe base of jack and the ground, orbetween the jack and the attachmentbar on the vehicle.
• The jack must correctly engage thejack attachment.
• Never allow any part of your body tobe extended under a vehicle suppor-ted by a jack.
Power brakes function only when the engine is running
The power brakes utilize vacuum pressure which is only created when the engine is run-ning. Never let the vehicle roll to a stop withthe engine switched off. If the power brakes are not working, consid- erably higher pressure will be required on thebrake pedal to compensate for the lack ofpower assistance. This can happen for exam- ple when towing your vehicle or if the engineis switched off when the vehicle is rolling. Thebrake pedal feels harder than usual.
Water on brake discs and brake pads
affects braking
Driving in rain and slush or passing throughan automatic car wash can cause water tocollect on the brake discs and pads. This willcause a delay in braking effect when thepedal is depressed. To avoid such a delaywhen the brakes are needed, depress thepedal occasionally when driving through rain,slush etc. This will remove the water from thebrakes. Check that brake application feelsnormal. This should also be done after wash-ing or starting in very damp or cold weather.
Severe strain on the brake systemThe brakes will be subject to severe strainwhen driving in mountains or hilly areas, orwhen towing a trailer. Vehicle speed is usuallyslower, which means that the cooling of thebrakes is less efficient than when driving onlevel roads. To reduce the strain on thebrakes, shift into a lower gear and let theengine help with the braking. Do not forgetthat, if you are towing a trailer, the brakes willbe subjected to a greater than normal load.
Anti-lock brakes (ABS)If the ABS warning lamp lights up there is a
malfunction in the ABS system (the standardbraking system will however function) and thevehicle should be driven cautiously to atrained and qualified Volvo service technicianfor inspection. The Anti-lock Braking System(ABS) helps to improve vehicle control (stop-ping and steering) during severe braking con-ditions by limiting brake lockup. When thesystem "senses" impending lockup, brakingpressure is automatically modulated in orderto help prevent lockup, which could lead to askid. The system performs a self-diagnostic test when the engine is started and when thevehicle first reaches a speed of approxi- mately 12 mph (20 km/h). The brake pedal
will pulsate several times and a sound may be audible from the ABS control module. This isnormal. To obtain optimal effect from the ABS sys- tem, constant pressure should be kept on thebrake pedal. Do not pump the brake pedal. The switching of the ABS modulator will be audible and the brake pedal will pulsate dur-ing braking. Please be aware that ABS doesnot increase the absolute braking potential ofthe vehicle. While control will be enhanced,ABS will not shorten stopping distances onslippery surfaces.

06 Starting and driving
Brake system
06
156
ABS with EBD (Electronic Brake Force
Distribution)
EBD is an integrated part of the ABS system. EBD regulates the hydraulic pressure to therear brakes to help provide optimal brakingcapacity. The brake pedal will pulsate duringbraking, which is normal. If the BRAKE and ABS warning lights come on at the same time, this could indicate afault in the brake system.
1. Stop the vehicle in a suitable place and switch off the engine.
2. Restart the engine.
• If both warning lights go off, no further action is required.
• If both lights are still on after the enginehas been restarted, switch off the engineagain and check the brake fluid level (seepage 225 for the location of the brakefluid reservoir).
WARNING
If the fluid level is below the
MIN mark in
the reservoir or if a Brake failure –
Service urgent message is displayed in
the text window: DO NOT DRIVE. Have the vehicle towed to a trained and qualifiedVolvo service technician and have thebrake system inspected.
• If the brake fluid level is above the
MIN
mark, drive carefully to a trained and qualified Volvo service technician andhave the brake system inspected.
Emergency Brake Assistance (EBA)The EBA function is designed to provide full brake effect immediately in the event of sud-den, hard braking. The system is activated bythe speed with which you depress the brakepedal.
NOTE
• When the EBA system is activated, the brake pedal will go down and pressurein the brake system immediatelyincreases to the maximum level. Youmust maintain full pressure on thebrake pedal in order to utilize the sys-tem completely. There will be no brak-ing effect if the pedal is released. EBAis automatically deactivated when thebrake pedal is released.
• When the vehicle has been parked forsome time, the brake pedal may sinkmore than usual when the engine isstarted. This is normal and the pedalwill return to its usual position when itis released.