tire pressure VOLVO XC90 2018 Owner´s Manual

WHEELS AND TIRES
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* Option/accessory.541
The vehicle may need to be driven for a few minutes at a speed above 35 km/h (22 mph) toactivate the system. All tires gray and a message: •
Tire pressure system Temporarily
unavailable. The indicator symbol will flash
for about 1 minute and then glow steadily. The system is temporarily unavailable and willbe activated momentarily.
•
Tire pressure system Service required.
The indicator symbol will flash for about 1 minute and then glow steadily. If the system is not working properly, contact a workshop 9
.
Related information
• Calibrating the tire pressure monitoring sys- tem
* (p. 539)
• Action when warned of low tire pressure (p. 541)
• Tire pressure monitoring system
* (p. 537)
• Vehicle status (p. 580)
Action when warned of low tirepressure
When the tire pressure monitoring system, Tyre Pressure Monitoring System (TPMS), detectslow pressure in one or more of the vehicle'stires, the driver will be alerted that action is nee-ded.
If the system's indicator symbol illumi- nates and the message Tire pressure
low is displayed, check the tire pres-
sure and inflate if necessary.
1. Switch off the ignition.
2. Check the inflation pressure on all four tires using a tire pressure gauge.
3. Inflate the tire to the correct pressure (see the tire pressure decal on the driver's side door pillar).
4. Through calibration of the system via the center display after the tire pressure hasbeen adjusted. Please be aware that the indicator symbol will not go out until the low tire pressure hasbeen corrected and the system has beenrecalibrated.
NOTE
To help prevent incorrect inflation pressure, pressure should be checked when the tiresare cold. The tires are considered to be coldwhen they have reached the same tempera-ture as the ambient temperature (about 3hours after the vehicle was last driven). Afterdriving for a few kilometers, the tires will warmup and the pressure will increase.
NOTE
• After inflating a tire, always replace the valve cap to help prevent valve damagecaused by gravel, dirt, etc.
• Use plastic valve caps only. Metal capscould corrode and become difficult toremove.
WARNING
•Incorrect inflation pressure could lead to tire failure, which could cause the driverto lose control of the vehicle.
• The system cannot predict sudden tiredamage.
9
An authorized Volvo workshop is recommended.

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WHEELS AND TIRES
* Option/accessory.
542
Related information
• Recommended tire pressure (p. 537)
• Adjusting tire pressure (p. 536)
• Calibrating the tire pressure monitoring sys- tem
* (p. 539)
• Viewing tire pressure status in the centerdisplay
* (p. 540)
• Tire pressure monitoring system
* (p. 537)
• Inflate tires with the compressor included in the tire sealing system (p. 555)
When changing wheels
The wheels can be changed, e.g. to switch to snow tires or spare tires. Follow the applicableinstructions for removing and installing thewheel.
Changing to tires of another dimensionMake sure that the tire dimension is approved for use on the vehicle. If you change to tires of another dimension, con- tact an authorized Volvo workshop to update thevehicle's software. A software update may benecessary when changing to tires of larger/smaller dimensions or when changing to or fromsnow tires.
Related information
• Removing a wheel (p. 544)
• Installing a wheel (p. 546)
• Tool kit (p. 542)
• Snow tires (p. 549)
• Spare wheel (p. 547)
• Wheel bolts (p. 543)
Tool kit Tools for e.g. towing or changing wheels are provided in the vehicle's cargo compartment.
The foam block under the cargo compartment floor contains the towing eyelet, the tire sealingsystem, the tool for removing plastic wheel boltcovers and the tool for removing the lockingwheel bolts. If the vehicle is equipped with a spare wheel
*10
, a
jack, lug wrench, and a package with disposable gloves and a bag for the damagedwheel are also provided.
Related information
• When changing wheels (p. 542)
• Jack
* (p. 543)
10
Not available on all models.

WHEELS AND TIRES
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* Option/accessory.547
1. Clean the contact surfaces between the
wheel and the wheel hub.
2. Lift the wheel into place. Tighten the wheel bolts securely. Do not grease the wheel bolt threads.
3. Lower the vehicle so that the wheel cannot rotate.
4. Tighten the wheel bolts in a crisscross pat- tern (as shown in illustration). It is important that the wheel bolts are securely tightened.Tighten to a torque of 140 Nm (103 ft.lbs.).Use a torque wrench to check torque.
5. Press the plastic covers onto the wheel bolts.
WARNING
The wheel bolts may need to be tightened again several days after a wheel change.Temperature fluctuations and vibrations cancause them to loosen slightly.
NOTE
• After inflating a tire, always replace the valve cap to help prevent valve damagecaused by gravel, dirt, etc.
• Use plastic valve caps only. Metal capscould corrode and become difficult toremove.
Related information
•
Leveling control settings
* (p. 435)
• When changing wheels (p. 542)
• Hoisting the vehicle (p. 583)
• Jack
* (p. 543)
• Tool kit (p. 542)
• Removing a wheel (p. 544)
Spare wheel11
The spare wheel is a Temporary spare and can be used to temporarily replace a punctured tireon one of the vehicle's regular wheels.
The spare tire is only intended for temporary use. Replace it with a normal wheel as soon as possi-ble. The driving characteristics of the vehicle change and ground clearance reduces when the sparewheel is used. Do not wash the vehicle in anautomatic car wash while using the TemporarySpare. The recommended tire pressure must be main- tained regardless of at which position the tempo-rary spare wheel is used on the vehicle. If the spare wheel is damaged, a new one can be purchased from a Volvo retailer.
WARNING
Current legislation prohibits the use of the "Temporary Spare" tire other than as a tem-porary replacement for a punctured tire. Itmust be replaced as soon as possible by astandard tire. Road holding and handling maybe affected with the "Temporary Spare" inuse. Do not drive faster than 80 km/h(50 mph).
11 Not available on all models.

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WHEELS AND TIRES
548
WARNING
•The vehicle must never be driven with more than one "Temporary spare" tiremounted.
• Driving with a spare wheel may alter thedriving characteristics of the vehicle.Replace the spare wheel with a normalwheel as soon as possible.
• The spare wheel is smaller than the nor-mal wheel, which affects the vehicle'sground clearance. Watch for high curbsand do not wash the vehicle in an auto-matic car wash when a spare wheel ismounted.
• Follow the manufacturer's recommendedtire inflation pressure for the spare wheel.
• On all-wheel drive vehicles, the drive onthe rear axle can be disconnected.
• If the spare wheel is mounted on thefront axle, snow chains must not be used.
• The spare wheel must not be repaired.
CAUTION
The vehicle must not be driven with wheels of different dimensions or with a spare tire otherthan the one that came with the vehicle. Theuse of different size wheels can seriouslydamage your vehicle's transmission.
This illustration is general. The shape and design of the foam block may vary depending on vehicle model.
The spare wheel is located in the spare wheel well with the outside of the wheel facing down-ward. The same bolt runs through both the sparewheel and foam block to hold them into place.The foam block contains all tools needed tochange a wheel.
Related information
•When changing wheels (p. 542)
• Recommended tire pressure (p. 537)
Accessing the spare wheel
Follow these instructions regarding handling the spare wheel.
1. Lift the rear edge of the cargo compartment floor.
2. Unscrew the retaining bolt.
3. Lift out the foam block containing the tools.
4. Lift out the spare wheel.
Stowing a flat tire1. Take out the package containing the wheel bag from the foam block and put the wheel in the bag.
2. Return the tools to their correct positions in the foam block and put the foam block backin the vehicle.
3. Screw down the foam block with the retain- ing bolt and lower the cargo compartmentfloor.
4. Put the flat tire in the trunk/cargo compart- ment.
Related information
• Spare wheel (p. 547)

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WHEELS AND TIRES
550
CAUTION
Snow chains can be used on the vehicle, with the following restrictions:• Volvo recommends not using snowchains on wheel dimensions larger than19 inches.
• Always follow the manufacturer's installa-tion instructions carefully. Install chainsas tightly as possible and retighten peri-odically.
• Only put snow chains on the front wheels(also applies to all-wheel drive vehicles).
• If accessory, aftermarket or "custom"tires and wheels with different dimen-sions than the original tires and wheelsare used, snow chains in some casesmay NOT be used. Sufficient distancebetween the chains and brakes, suspen-sion and body components must bemaintained.
• Check local regulations regarding the useof snow chains before installing.
• Never exceed the snow chain manufac-turer's specified maximum speed limit.Under no circumstances should youexceed 50 km/h (30 mph).
• Avoid bumps, holes or sharp turns whendriving with snow chains.
• Avoid driving on surfaces without snow as this wears out both the snow chains andthe tires.
• The handling of the vehicle can beadversely affected when driving withchains. Avoid fast or sharp turns as wellas locked wheel braking.
• Some types of strap-on chains affectbrake components and therefore mustNOT be used.
Consult a Volvo retailer for more information about snow chains.
Related information
•
Winter driving (p. 440)
Tire sealing system12
The temporary tire sealing system can be used to seal a puncture in a tire or to check andadjust the pressure in the tire. Models equipped with a spare wheel 13
do not
have the tire sealing system.
The tire sealing system consists of a compressor and a bottle containing sealing compound. Thesealing functions as a temporary repair.
NOTE
The sealing compound effectively seals tires with punctures in the tread but may not beable to fully seal tires with punctures in thesidewall. Do not use the tire sealing systemon tires with large tears, cracks or similardamage.
NOTE
The compressor is intended for temporary tire sealing and is approved by Volvo.
LocationThe tire sealing system is located in a foam block under the floor of the cargo compartment.

WHEELS AND TIRES
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551
Sealing compound bottleThe sealing compound bottle must be replaced if its expiration date has passed (see the decal onthe bottle). Handle the old bottle as hazardouswaste. The sealing compound bottle must be replaced after use. Volvo recommends contacting anauthorized Volvo workshop for replacement.
Related information
•Using the tire sealing system (p. 551)
• Inflate tires with the compressor included inthe tire sealing system (p. 555)
• Tires (p. 528)
Using the tire sealing system
Sealing a tire using the tire sealing system, the Temporary Mobility Kit (TMK).
Overview
Electrical cable
Hose
Air release valve
Protective hose cover
Speed limit sticker
Bottle holder (orange cover)
Air pressure gauge
Sealing compound bottle
Switch
Connecting
NOTE
Do not break the seal of the bottle before use. The seal is broken automatically whenthe bottle is screwed into place.
12 Certain models only.
13 Not available on all models.

WHEELS AND TIRES
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553
7. Connect the electrical cable to the nearest
12 V outlet and start the vehicle.
NOTE
Make sure that none of the vehicle's other 12 V sockets are used while the compressoris running.
WARNING
Never leave children unattended in the vehicle while the engine is running. 8. Start the compressor by moving the switch to
the I (On) position.
WARNING
Never stand next to a tire being inflated with the compressor. If cracks, bulges, etc. form onthe tire, switch off the compressor immedi-ately. The vehicle should not be driven. Callroadside assistance to have the vehicle towedto a workshop for inspection/replacement ofthe tire. Volvo recommends an authorizedworkshop.
NOTE
When the compressor first starts, air pressure may temporarily increase up to 6 bar (88 psi)but should decrease again after approxi-mately 30 seconds.
9. Inflate the tire for 7 minutes.
CAUTION
To help avoid overheating, the compressor should never be used for more than10 minutes at a time.
10. Switch off the compressor and check the
inflation pressure using the air pressure gauge. The inflation pressure should bebetween 1.8 bar (22 psi) and 3.5 bar(51 psi). If the inflation pressure is too high,use the air release valve to release air.
WARNING
If the bottle is not removed in the correct order, sealant could spill out.
WARNING
If pressure falls below 1.8 bar (22 psi), the hole in the tire may be too large. The vehicleshould not be driven. Call roadside assistanceto have the vehicle towed to a workshop forinspection/replacement of the tire. Volvo rec-ommends an authorized workshop.
11. Switch off the compressor and remove the electrical cable.
12. Unscrew the hose from the tire's valve and screw the valve cap back on.
13. Put the protective hose cover onto the hose to help prevent leakage of any residual seal- ing compound. Return the equipment to thecargo compartment.

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WHEELS AND TIRES
55414. Immediately drive the vehicle at least 3 km
(2 miles) at a maximum speed of 80 km/h (50 mph) to allow the sealing compound toseal the tire, and then recheck the inflationpressure.
NOTE
During the tire's first revolution, some sealing compound may spray out of the puncturehole.
WARNING
Before driving away, make sure that no one is near the vehicle who could be sprayed withsealing compound. Make sure no one iswithin 2 meters(7 feet) of the vehicle.
15. Rechecking the inflation pressure Connect the hose to the tire's valve and screw the hose connector onto the valve asfar as possible. The compressor must beswitched off. 16. Check the inflation pressure on the air pres-
sure gauge.
• If the pressure is under 1.3 bar (19 psi),the tire is not sufficiently sealed. The vehi-cle should not be driven. Call roadsideassistance to have the vehicle towed.
• If the inflation pressure is higher than1.3 bar (19 psi), the tire must be inflatedto the inflation pressure specified on thetire pressure decal on the driver's sidedoor pillar (1 bar = 100 kPa = 14.5 psi). Ifthe inflation pressure is too high, use theair release valve to release air.
NOTE
Replace the sealing compound bottle and hose after use. Volvo recommends havingthese replaced by an authorized Volvo work-shop.
WARNING
Check inflation pressure regularly.
Volvo recommends driving to the nearest author- ized Volvo workshop to have the tire replaced/repaired. Inform the workshop that the tire con-tains sealing compound.
WARNING
After using the tire sealing system, the vehicle should not be driven farther than approxi-mately 200 km (120 miles).
NOTE
The compressor is an electric device. Follow local regulations for disposal.
Related information
• Recommended tire pressure (p. 537)
• Tire sealing system (p. 550)
• Inflate tires with the compressor included in the tire sealing system (p. 555)

WHEELS AND TIRES
555
Inflate tires with the compressorincluded in the tire sealing system The vehicle's original tires can be inflated using the compressor in the tire sealing system.
1. The compressor must be switched off. Makesure that the switch is in the 0 (Off) position
and take out the electrical cable and the hose.
2. Unscrew the tire's valve cap and screw the hose's valve connector as far as possibleonto the valve. Be sure the air release valve on the com- pressor's hose is completely closed.
3. Connect the electrical cable to the nearest 12 V outlet and start the vehicle.
WARNING
Inhaling exhaust fumes could lead to serious injury. Never leave the engine running in anenclosed space or a space without sufficientventilation.
WARNING
Never leave children unattended in the vehicle while the engine is running.
4. Start the compressor by moving the switch to the I (On) position.
CAUTION
Risk of overheating. The compressor should not be running for longer than 10 minutes ata time.
5. Inflate the tire to the pressure specified on
the tire pressure decal on the driver's side door pillar. If the inflation pressure is toohigh, use the air release valve to release air.
6. Switch off the compressor. Remove the hose and the electrical cable.
7. Screw the valve cap back onto the tire.
NOTE
• After inflating a tire, always replace the valve cap to help prevent valve damagecaused by gravel, dirt, etc.
• Use plastic valve caps only. Metal capscould corrode and become difficult toremove.
NOTE
The compressor is an electric device. Follow local regulations for disposal.
Related information
• Recommended tire pressure (p. 537)
• Using the tire sealing system (p. 551)
• Tire sealing system (p. 550)

MAINTENANCE AND SERVICE
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577
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.