warning VOLVO XC90 T8 2018 Owner´s Manual

WHEELS AND TIRES
556
Uniform Tire Quality Grading
ALL PASSENGER VEHICLE TIRES MUST CONFORM TO FEDERAL SAFETY REQUIRE-MENTS IN ADDITION TO THESE GRADES .
Quality grades can be found, where applica- ble, on the tire sidewall between the treadshoulder and maximum section width. Forexample: Treadwear 200 Traction AA Temperature A
TREADWEARThe treadwear grade is a comparative rating based on the wear rate of the tire when testedunder controlled conditions on a specified gov-ernment test course. For example, a tire graded150 would wear one and one half (1 ½) times aswell on the government course as a tire graded100. The relative performance of tires dependsupon the actual conditions of their use, however,and many depart significantly from the norm dueto variation in driving habits, maintenance practi-ces and differences in road characteristics andclimate.
TRACTIONThe traction grades, from highest to lowest, areAA, A, B, and C, as measured under controlledconditions on specified government test surfacesof asphalt and concrete. A tire marked C mayhave poor traction performance.
WARNING
The traction grade assigned to this tire is based on braking (straight-ahead) tractiontests and is not a measure of cornering (turn-ing) traction.
TEMPERATUREThe temperature grades are A (the highest), B, and C, representing the tire's resistance to thegeneration of heat and its ability to dissipate heatwhen tested under controlled conditions on aspecified indoor laboratory test wheel. Sustainedhigh temperature can cause the material of thetire to degenerate and reduce tire life, and exces-sive temperature can lead to sudden tire failure.The grade C corresponds to a minimum level ofperformance that all passenger vehicle tires mustmeet under the Federal Motor Safety StandardNo. 109. Grades B and A represent higher levelsof performance on the laboratory test wheel thanthe minimum required by law.
WARNING
The temperature grade for this tire is estab- lished for a tire that is properly inflated andnot overloaded. Excessive speed, under-infla-tion, or excessive loading, either separately orin combination, can cause heat buildup andtire failure.
Related information
•Tires (p. 550)
• Tire sidewall designations (p. 554)

WHEELS AND TIRES
* Option/accessory.557
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. 558)
• Recommended tire pressure (p. 559)
• Tire pressure monitoring system
* (p. 559)
• Tires (p. 550)
4
Not available in all models.

WHEELS AND TIRES
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* Option/accessory.559
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. 557)
• Approved tire pressure (p. 665)
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.

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WHEELS AND TIRES
* Option/accessory.
560 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. 559)
• Viewing tire pressure status in the center display
* (p. 562)
• Action when warned of low tire pressure (p. 563) •
Calibrating the tire pressure monitoring sys- tem
* (p. 561)
7
Not available on all models.

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WHEELS AND TIRES
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562
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. 559)
• Adjusting tire pressure (p. 558)
• Viewing tire pressure status in the center display
* (p. 562)
• Action when warned of low tire pressure (p. 563)
• Tire pressure monitoring system
* (p. 559)
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
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* Option/accessory.563
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. 561)
• Action when warned of low tire pressure (p. 563)
• Tire pressure monitoring system
* (p. 559)
• Vehicle status (p. 602)
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.

WHEELS AND TIRES
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* Option/accessory.565
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. 564)
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.

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WHEELS AND TIRES
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566
Related information
• Removing a wheel (p. 566)
• Installing a wheel (p. 568)
Removing a wheel
Instructions for removing a wheel when chang- ing wheels. Wheel changes must always be car-ried out correctly.
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.
WARNING
•Apply the parking brake and put the gear selector in the Park (
P) position.
• Block the wheels standing on the ground, use rigid wooden blocks or large stones.
• Check that the jack is not damaged, thethreads are properly lubricated and it isfree from dirt.
• Be sure the jack is on a firm, level, non-slippery surface and that it is upright andnot leaning.
• The jack must correctly engage in thejack attachment.
• No objects should be placed between thebase of the jack and the ground, orbetween the jack and the attachment baron the vehicle.
• Never let anyone remain in the vehiclewhen it is raised on a jack.
• If a tire must be changed near passingtraffic, make sure all passengers move toa safe location.
• Use a jack intended for the vehicle whenchanging a tire. For any other job, usestands to support the vehicle.
• Never crawl under or allow any part ofyour body to be extended under a vehiclesupported by a jack.

WHEELS AND TIRES
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* Option/accessory.567
1. Turn on the vehicle's hazard warning flashers
if a wheel change must be performed in an area with traffic.
2. Apply the parking brake and put the gear selector in P.
For vehicles with
Leveling Control* : If the
vehicle is equipped with pneumatic suspen- sion, this must be switched off before the vehicle is lifted with the jack *.
3. Take out the jack *, lug wrench * and tool for
removing the plastic covers, which are stowed in the foam block.
Tool for removing the plastic covers on the wheel bolts.
4. Place chocks in front of and behind the wheels that are still on the ground. For exam- ple, use heavy wooden blocks or largestones. 5.
Using the lug wrench *, screw the towing eye
into place as far as possible according to theinstructions.
CAUTION
The towing eyelet must be screwed into the lug wrench * as far as possible.
6. Remove the plastic covers from the wheel
bolts using the designated tool.
7. With the vehicle still on the ground, use the lug wrench/towing eye to loosen the wheel bolts ½-1 turn by pressing downward (coun-terclockwise). 8. When hoisting the vehicle, it is important that
the jack * or garage lift arms are positioned
on the designated points under the vehicle.The triangle markings on the plastic coverindicate where the jack attachment points/lifting points are located. There are two jackattachment points on each side of the vehi-cle. There is a groove for the jack at eachattachment point.
9. Position the jack under the attachment point being used, ensuring that the surface is firm, flat and not slippery.

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WHEELS AND TIRES
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568 10. Crank it up until it is properly aligned and it is
in contact with the vehicle's jack attachment point. Make sure the top of the jack (or thegarage lift arms) is correctly positioned in theattachment point, with the bump on the topof the jack in the recess in the attachmentpoint and the base positioned vertically underthe attachment point.
11. Turn the jack so that the crank is as far as possible from the side of the vehicle, whichwill position the jack's arms perpendicular tothe vehicle's direction of movement.
12. Raise the vehicle until the wheel to be changed can move freely. Unscrew the wheelbolts and lift off the wheel.
Related information
• Leveling control settings
* (p. 453)
• When changing wheels (p. 564)
• Hoisting the vehicle (p. 605)
• Jack
* (p. 565)
• Tool kit (p. 564)
• Installing a wheel (p. 568)
Installing a wheel
Instructions for installing a wheel during a wheel change.
NOTE
The jack provided with your vehicle is intended to be used only in temporary situa-tions such as changing wheels in the event ofa flat tire. Only the jack that came with yourparticular model should be used to lift thevehicle. If the vehicle needs to be lifted morefrequently or for a prolonged period, using agarage jack or hoist is recommended. Alwaysfollow this device's instructions for use.
WARNING
• Apply the parking brake and put the gear selector in the Park (
P) position.
• Block the wheels standing on the ground, use rigid wooden blocks or large stones.
• Check that the jack is not damaged, thethreads are properly lubricated and it isfree from dirt.
• Be sure the jack is on a firm, level, non-slippery surface and that it is upright andnot leaning.
• The jack must correctly engage in thejack attachment.
• No objects should be placed between thebase of the jack and the ground, orbetween the jack and the attachment baron the vehicle.
• Never let anyone remain in the vehiclewhen it is raised on a jack.
• If a tire must be changed near passingtraffic, make sure all passengers move toa safe location.
• Use a jack intended for the vehicle whenchanging a tire. For any other job, usestands to support the vehicle.
• Never crawl under or allow any part ofyour body to be extended under a vehiclesupported by a jack.