2018 VOLVO XC90 ECO mode

WHEELS AND TIRES
}}
529
imprinted on the sidewall of the tire. The last four digits in the series is the Department ofTransportation (DOT) stamp and indicates theweek and year the tire was manufactured. Thetire in the illustration has 0717 as the last fourdigits, which means it was manufactured week 7of 2017.
Tire ageTires degrade over time, even when they are notbeing used. It is recommended that tires gener-ally be replaced after 6 years of normal service.Heat caused by hot climates, frequent high load-ing conditions or Ultra Violet (U.V.) exposure canaccelerate the aging process. The temporary spare
2
should also be replaced at 6-year inter-
vals, even if it has never been used. A tire with e.g., visible cracks or discoloration should bereplaced immediately.
Tire economy
• Maintain correct tire pressure.
• Avoid fast starts, hard braking and tirescreeching.
• Tire wear increases with speed.
• Correct front wheel alignment is very impor-tant.
• Unbalanced wheels impair tire economy anddriving comfort. •
Tires must maintain the same direction ofrotation throughout their lifetime.
• When replacing tires, the tires with the mosttread should be mounted on the rear wheelsto reduce the chance of oversteer duringhard braking.
• Hitting curbs or potholes can damage thetires and/or wheels permanently.
Tire rotationYour vehicle has no required tire rotation. Drivingstyle, tire pressure, climate and road conditionsaffect how quickly the tires age and exhibit signsof wear. Maintaining the correct tire pressurehelps keep tread wear evenly distributed. To help prevent differences in tread depth and wear patterns forming on the tires, the front andrear wheels should be rotated, i.e. the front tiresmoved to the rear and the rear tires moved to thefront. Ideally, tire rotation should be done the firsttime after approximately 5000 km (ca3100 miles) and thereafter at 10,000 km(approx. 6200 miles) intervals. If you have any questions regarding tread depth, Volvo recommends consulting an authorizedVolvo workshop. If significant differences in wear(> 1 mm difference in tread depth) between thetires have already occurred, the least worn tiresshould always be mounted on the rear wheels. Afront-wheel skid (understeer) is usually easier to control than a rear-wheel skid (oversteer). If thefront wheels skid, the vehicle will continue in astraight line instead of the rear wheels skiddingto the side, which could cause you to completelylose control of the vehicle. It is therefore impor-tant that the rear wheels never lose grip beforethe front wheels.
Storing wheels and tiresWhen storing complete wheels (tires mounted onrims), they should be suspended off the floor orplaced on their sides on the floor. Tires not mounted on rims should be stored on their sides or standing upright, but should not besuspended.
CAUTION
Tires should preferably be stored in a cool, dry, dark place, and should never be stored inclose proximity to solvents, gasoline, oils, etc.
2
Not available on all models.

WHEELS AND TIRES
* Option/accessory.535
Checking tire pressure
Correct inflation pressure helps improve driving stability, save fuel and increase the service life ofthe tires.
Tire pressure decreases over time, which is nor- mal. Tire pressure also varies depending on theambient temperature. Driving on under-inflatedtires could cause the vehicle to overheat and leadto damage. Tire pressure affects traveling com-fort, road noise and driving characteristics. Check the pressure in the tires every month. Use the recommended inflation pressure for cold tiresfor optimal tire performance and wear. Under-inflated or over-inflated tires could cause uneventread wear. Use an air pressure gauge and check the infla- tion pressure on all the tires, including the spare tire 4
, at least once a month and before long trips.
Volvo strongly recommends buying a reliable air pressure gauge, as the automatic gauges provi-ded at service stations may be inaccurate.
WARNING
• Under-inflation is the most common cause of tire failure and may result insevere tire cracking, tread separation, or"blow-out," with unexpected loss of vehi-cle control and increased risk of injury.
• Under-inflated tires reduce the load car-rying capacity of your vehicle.
Cold tiresInflation pressure should be checked when thetires are cold. The tires are considered to be cold when they have the same temperature as the surrounding(ambient) air. This temperature is normally reached after the vehicle has been parked for at least 3 hours. After driving for approximately 1.6 km (1 mile), the tires are considered to be warm. If you needto drive longer than that to inflate the tires, checkand record the inflation pressure of the tires firstand inflate accordingly when you arrive at thepump. When the ambient temperature changes, so does the inflation pressure. A 10-degree temperaturedrop causes a corresponding drop in inflationpressure of 1 psi (7 kPa). Check the inflationpressure of the tires regularly and adjust to the correct pressure, which can be found on the vehi-cle's tire information placard or certification label. If you check inflation pressure when the tires are warm, you should never release air. The tiresbecome warm after driving and it is normal forwarm tires to have an inflation pressure abovethe recommended pressure for cold tires. A warmtire with an inflation pressure equal to or underthe recommended pressure for cold tires couldbe significantly under-inflated.Related information
•
Adjusting tire pressure (p. 536)
• Recommended tire pressure (p. 537)
• Tire pressure monitoring system
* (p. 537)
• Tires (p. 528)
4
Not available in all models.

WHEELS AND TIRES
536
Adjusting tire pressureTire pressure decreases over time, which is nor- mal. The tire pressure must therefore beadjusted to maintain the recommended tire pres-sure.
Use the recommended inflation pressure for cold tires for optimal tire performance and wear.
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.
1. Remove the valve cap from the tire and press the air pressure gauge firmly onto the valve.
2. Inflate to the recommended inflation pres- sure. 3. Screw the valve cap back on.
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.
4. Visually inspect the tire to make sure there
are no nails or other embedded objects that could puncture the tire and cause air leak-age.
5. Check the sidewalls to make sure there are no gouges, cuts, bulges or other irregulari-ties.
6. Repeat this procedure for each tire, including the spare tire 5
.
NOTE
If you have overfilled the tire, release air by pushing on the metal stem in the center ofthe valve. Then recheck the pressure withyour tire gauge. Some spare tires require higher inflation pres- sure than the other tires. Consult the tireinflation pressure table or the inflation pres-sure placard.
Related information
• Recommended tire pressure (p. 537)
• Checking tire pressure (p. 535)
• Inflate tires with the compressor included in the tire sealing system (p. 555)
• Approved tire pressure (p. 647)
5
Not available on all models.

WHEELS AND TIRES
}}
* Option/accessory.537
Recommended tire pressure
The tire pressure placard on the driver's side B pillar (between the front and the rear door) indi-cates tire pressure for different loads and speedconditions.
The placard specifies the designation for the fac- tory-mounted tires on the vehicle, as well as loadlimits and inflation pressures.
Related information
• Checking tire pressure (p. 535)
• Approved tire pressure (p. 647)
Tire pressure monitoring system
*
The tire pressure monitoring system, Tyre Pressure Monitoring System (TPMS), provides awarning symbol in the instrument panel if pres-sure is too low in one or more tires.
SymbolExplanation
This symbol illuminates to indicate low inflation pressure. If there is a system malfunction, the inflation pressure warning symbolwill flash for approximately oneminute and then glow steadily.
System descriptionThe tire pressure monitoring system measures differences in rotational speed between thewheels through the ABS system to determine ifthe tires are properly inflated. If inflation pressure in a tire is too low, its diameter (and consequently its rotational speed) changes. By comparing thetires with each other, the system can determine ifthe pressure in one or more tires is too low.
General information about the tire pressure
monitoring system
In the following description, the tire monitoring system is generally referred to as TPMS. Each tire, including the spare tire (if provided) 6
,
should be checked monthly when cold and infla- ted to the inflation pressure recommended by the vehicle manufacturer on the vehicle placard ortire inflation pressure label. (If your vehicle hastires of a different size than the size indicated onthe vehicle placard or tire inflation pressure label,you should determine the proper tire inflationpressure for those tires.) As an added safety feature, your vehicle has been equipped with a tire pressure monitoringsystem (TPMS) that illuminates a low tire pres-sure telltale when one or more of your tires issignificantly under-inflated. Accordingly, when thelow tire pressure telltale illuminates, you shouldstop and check your tires as soon as possible,and inflate them to the proper pressure. Driving on a significantly under-inflated tire cau- ses the tire to overheat and can lead to tire fail-ure. Under-inflation also reduces fuel efficiencyand tire tread life, and may affect the vehicle'shandling and stopping ability. Please note thatthe TPMS is not a substitute for proper tire main-tenance, and it is the driver's responsibility tomaintain correct tire pressure, even if under-infla-tion has not reached the level to trigger illumina-tion of the TPMS low tire pressure telltale. Your vehicle has also been equipped with a TPMS malfunction indicator to indicate when thesystem is not operating properly. The TPMS mal-function indicator is combined with the low tirepressure telltale. When the system detects a mal-
6
Not available on all models.

||
WHEELS AND TIRES
* Option/accessory.
538 function, the telltale will flash for approximately one minute and then remain continuously illumi-nated. This sequence will continue upon subse-quent vehicle start-ups as long as the malfunc-tion exists. When the malfunction indicator is illu-minated, the system may not be able to detect orsignal low tire pressure as intended. TPMS malfunctions may occur for a variety of reasons, including the installation of replacementor alternate tires or wheels on the vehicle thatprevent the TPMS from functioning properly. Always check the TPMS malfunction telltale after replacing one or more tires or wheels on yourvehicle to ensure that the replacement or alter-nate tires and wheels allow the TPMS to con-tinue to function properly.
Messages in the instrument panelIf tire pressure is too low, the low tire pressurewarning symbol is shown in the instrument panelalong with a message.
•
Tire pressure low Check tires, calibrate
after fill
•Tire pressure system Temporarily
unavailable
•Tire pressure system Service required
To keep in mind
• Always calibrate the system after changing wheels or adjusting tire pressure. See the tire pressure placard on the driver's side B pillarfor Volvo-recommended tire pressures.
• If you switch to a tire of another size than thefactory-mounted tires, the system must becalibrated for these tires to avoid false warn-ings.
• If a spare wheel 7
is used, it is possible that
the tire pressure monitoring system will notwork correctly due to the differencesbetween the wheels.
• The system does not replace the need forregular tire inspection and maintenance.
• It is not possible to deactivate the tire pres-sure monitoring system.
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.
Related information
•
Recommended tire pressure (p. 537)
• Viewing tire pressure status in the center display
* (p. 540)
• Action when warned of low tire pressure (p. 541) •
Calibrating the tire pressure monitoring sys- tem
* (p. 539)
7
Not available on all models.

||
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.

||
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
}}
* Option/accessory.543
Jack*
The jack can be used to lift the vehicle to e.g. change a wheel.
The illustration is generic – the design may vary.
CAUTION
• When not in use, the jack
* should be kept
in its storage compartment under the cargo compartment floor.
• The jack provided with your vehicle isintended to be used only in temporary sit-uations such as changing wheels in theevent of a flat tire. Only the jack thatcame with your particular model shouldbe used to lift the vehicle. If the vehicleneeds to be lifted more frequently or for aprolonged period, using a garage jack orhoist is recommended. Always follow thisdevice's instructions for use.
The jack needs to be cranked together to the correct position in order to fit.
Models with leveling control
*
If the vehicle is equipped with the optional pneu- matic suspension, it must be turned off beforethe vehicle is lifted on a jack.
Related information
•Tool kit (p. 542)
Wheel bolts
The wheel bolts hold the wheel in place on the wheel hub.
CAUTION
The wheel bolts should be tightened to 140 Nm (103 ft. lbs.). Over-tightening orunder-tightening could damage the threadedjoints.
Only use rims that have been tested and approved by Volvo and are included in Volvo'soriginal product range. Use a torque wrench to check that the wheel bolts are tightened correctly. Do not grease the wheel bolt threads.
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.
Locking wheel bolts *A tool for removing the locking wheel bolts is located in the foam block under the cargo com-partment floor.