2018 VOLVO S90 T8 inflation pressure

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PRACTICAL INFORMATION
98temperature drop causes a corresponding drop of 1 psi (7 kPa) in inflation pressure. Check yourtire pressures frequently and adjust them to theproper pressure, which can be found on the vehi-cle's tire information placard or certification label. If checking tire pressure when the tire is hot, never "bleed" or reduce air pressure. The tiresare hot from driving and it is normal for pressuresto increase above recommended cold pressures.A hot tire at or below recommended cold inflationpressure could be significantly under-inflated.
Recommended inflation pressures
Tire inflation placard
A tire inflation pressure placard is located on the driver's side B-pillar (the structural member at theside of the vehicle, at the rear of the driver's dooropening). This placard indicates the designation
of the factory-mounted tires on your vehicle, aswell as load limits and inflation pressure.
NOTE
•
The placard shown indicates inflation pressure for the tires installed on thevehicle at the factory only.
• A certain amount of air seepage from thetires occurs naturally and tire pressurefluctuates with seasonal changes in tem-perature. Always check tire pressure reg-ularly.
•Use a tire gauge to check the tire inflation pressure, including the spare 6
, at least once
a month and before long trips. You are strongly urged to buy a reliable tire pressuregauge, as automatic service station gaugesmay be inaccurate.
• Use the recommended cold inflation pres-sure for optimum tire performance and wear.
• Under-inflation or over-inflation may causeuneven treadwear patterns.
Checking tire pressure1. Remove the cap from the valve on one tire,
then firmly press the tire gauge onto thevalve. 2. Add air to reach the recommended air pres-
sure.
3. Replace the valve cap.
CAUTION
• After inflating the tires, always reinstall the valve cap to help avoid damage to thevalve from dirt, gravel, etc.
• Use plastic valve caps only. Metal capscould corrode and become difficult toremove.
4. Visually inspect the tires to make sure there
are no nails or other objects embedded that could puncture the tire and cause an air leak.
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.
6Not available in all models.

PRACTICAL INFORMATION
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NOTE
•If you overfill the tire, release air by push- ing on the metal stem in the center of thevalve. Then recheck the pressure withyour tire gauge.
• Some spare tires require higher inflationpressure than the other tires. Consult thetire inflation pressure table or the inflationpressure placard.
Changing tires
When changing wheels to another dimension, always follow Volvo's instructions.
When changing to tires of another
dimension
If you mount tires with a dimension other thanthe factory-installed tires, contact an authorizedVolvo retailer to update the vehicle's software.This may also be necessary when changing fromsummer to winter tires, or vice versa.
Related information
• Snow tires and chains (p. 97)
• Installing a wheel (p. 102)
• Removing a wheel (p. 101)
Tools
Tools for e.g., changing wheels, etc., are located under the floor of the trunk.
Generic illustration - the appearance and location of the foam block may vary from model to model
The foam block under the floor of the trunk con- tains the towing eyelet, the tool for removing plastic wheel bolt covers, the jack * and the lug
wrench *. There is also a storage space for the
tool used to remove locking wheel bolts.
Related information
• Jack (p. 100)
• Changing tires (p. 99)

PRACTICAL INFORMATION
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CAUTION
•After inflating the tires, always reinstall the valve cap to help avoid damage to thevalve from dirt, gravel, etc.
• Use plastic valve caps only. Metal capscould corrode and become difficult toremove.
Related information
• Wheel bolts (p. 100)
• Jack (p. 100)
Tire Pressure Monitoring System (TPMS) TPMS provides a warning if inflation pressure in one or more tires is too low. It also uses a sym-bol (called a telltale) that will flash for60 seconds and then glow steadily if there is asystem malfunction.
TPMS uses the rotational speed of the tires in combination with signal analysis of the ABS sen-sor signals to determine if they are properly infla-ted. When a tire is under-inflated, its diameter(and consequently also its rotational speed)changes. By comparing the individual tires witheach other it is possible to determine if one ormore tires are under inflated. If inflation pressureis too low, an indicator symbol will illuminate inthe instrument panel and a text message will bedisplayed.
Symbol
Explanation
The symbol illuminates to indicate low tire inflation pressure. If a malfunction occurs in the sys- tem, the tire pressure warning sym-bol will flash for approximately1 minute and then remain illumi-nated.
Each tire, including the spare (if provided), should be checked monthly when cold and inflated to the inflation pressure recommended by the vehi-cle manufacturer on the vehicle placard or tireinflation pressure label. (If your vehicle has tiresof a different size than the size indicated on thevehicle placard or tire inflation pressure label, youshould determine the proper tire inflation pres-sure 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.

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PRACTICAL INFORMATION
104When the system detects a malfunction, the tell- tale will flash for approximately one minute andthen remain continuously illuminated. Thissequence will continue upon subsequent vehiclestart-ups as long as the malfunction exists. Whenthe malfunction indicator is illuminated, the sys-tem may not be able to detect or signal low tirepressure 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 afterreplacing 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 panel
When the TPMS symbol illuminates, the following text messages may also be displayed:
•
Tire pressure low Check tires, calibrate
after fill
•Tire pressure system Temporarily
unavailable
•Tire pressure system Service required
If TPMS cannot determine which tire(s) have low inflation pressure:
• All four tires will be shown as affected in thecenter display After changing wheels, always calibrate the sys-tem to avoid false warnings. TPMS does not replace the need for regular tire inspection and maintenance.
NOTE
If you change to tires with a different dimen- sion than the factory-installed ones, theTPMS system must be calibrated for thesetires. TPMS cannot be turned off.
WARNING
Incorrect inflation pressure could lead to tire failure, resulting in a loss of control of thevehicle.
Related information
•
Checking tire inflation pressure (p. 104)
• Reinflating tires equipped with the Tire Pressure Monitoring System (TPMS)(p. 105)
Checking tire inflation pressure
The Tire Pressure Monitoring System (TPMS) makes it possible to view the current inflationpressure status of all four tires.
Checking inflation pressure
1. Open the Car status app in the center dis-
play's Application view.
2. Tap
TPMS to see the tires' current inflation
pressure status.
The on-screen graphic displays the inflation pres- sure status.

PRACTICAL INFORMATION
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Status view. The illustration is generic and may vary from model to model or after a software update
Color indications: Green: tire pressure is above the threshold for a
low inflation pressure warning. Yellow : low tire pressure.
• One yellow wheel: the tire indicated is under- inflated.
• All wheels yellow: two or more tires areunder-inflated.
Stop safely and check/re-inflate the tire(s) assoon as possible. Calibrate TPMS after re-inflat-ing the tire(s). All wheels gray:
• Calibration is underway
• Inflation pressure status is not known It might be necessary to drive at a speed of at least 22 mph (35 km/h) for several minutes forthe system to become operational. All wheels gray combined with the message
Tire pressure system Temporarily
unavailable and the TPMS symbol in the
instrument panel (
) remains illuminated
after flashing for 1 minute : the system is tem-
porarily unavailable. It should become operational again shortly. All wheels gray combined with the message
Tire pressure system Service required and
the TPMS symbol in the instrument panel (
) remains illuminated after flashing for
1 minute : the system is not functioning correctly.
Have it checked by a trained and qualified Volvo service technician.
Related information
• Calibrating the Tire Pressure MonitoringSystem (TPMS) (p. 106)
• Reinflating tires equipped with the TirePressure Monitoring System (TPMS)(p. 105)
• Tire Pressure Monitoring System (TPMS)(p. 103)
Reinflating tires equipped with the Tire Pressure Monitoring System(TPMS) When low tire pressure has been detected, a message will be displayed in the instrumentpanel and the Tire Pressure Monitoring Systemsymbol will illuminate.
Symbol
Explanation
When the TPMS symbol illuminates and a message is displayed, check,reinflate the tire(s) and calibrateTPMS.
1. Use a tire pressure gauge to check the infla-
tion pressure of all four tires.
2. Re-inflate the tire(s) to the correct pressure. Consult the tire pressure decal located on the driver's side B-pillar (the structural mem-ber at the side of the vehicle, at the rear ofthe driver's door opening) or the inflationpressure table in your printed owner's man-ual supplement.
3. Calibrate the Tire Pressure Monitoring System, see the article "Calibrating the TirePressure Monitoring System".

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PRACTICAL INFORMATION
1064. Drive the vehicle at a speed of at least
22 mph (35 km/h). Please be aware that the TPMS telltale warning will not go out untilthe low tire pressure has been corrected andcalibration has been carried out.
NOTE
To help avoid incorrect tire inflation pressure, if possible only inflate the tires when they arecold. The tires are considered to be coldwhen they have the same temperature as thesurrounding (ambient) air. This temperature isnormally reached after the vehicle has beenparked for at least 3 hours. After driving a dis-tance of approximately 1 mile (1.6 km), thetires are considered to be warm.
CAUTION
When inflating tires, press the pump's mouth- piece straight onto the valve to help avoidbending or otherwise damaging the valve.
CAUTION
• After inflating the tires, always reinstall the valve cap to help avoid damage to thevalve from dirt, gravel, etc.
• Use plastic valve caps only. Metal capscould corrode and become difficult toremove.
WARNING
• Incorrect inflation pressure could lead to tire failure, resulting in a loss of control ofthe vehicle.
• Tire monitoring systems cannot indicatesudden tire damage caused by externalfactors (e.g., a blowout) in advance.
Related information
•
Tire Pressure Monitoring System (TPMS)(p. 103)
• Checking tire inflation pressure (p. 104)
• Calibrating the Tire Pressure MonitoringSystem (TPMS) (p. 106)
Calibrating the Tire Pressure Monitoring System (TPMS)
In order for the Tire Pressure Monitoring System to work properly, tire pressure reference valuesmust be set correctly. This must be done eachtime wheels are changed or tire inflation pres-sures are modified.
Calibrating TPMSTo calibrate the system:
1. Switch off the engine. The vehicle must be at a standstill when calibration is started.

PRACTICAL INFORMATION
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2. Re-inflate the tire(s) to the correct pressure.
Consult the tire pressure placard located on the driver's side B-pillar (the structural mem-ber at the side of the vehicle, at the rear ofthe driver's door opening) or the inflationpressure table in your printed owner's manualsupplement.
Tire inflation placard
3. Start the engine. 4.Open the
Car status app in the center dis-
play's App view.
5. Tap TPMS to access Tire Pressure
Monitoring System.
6. Tap Calibrate.
7. Tap
OK to confirm that the tire inflation pres-
sure has been checked and adjusted in all four tires.
8. Drive the vehicle. > Calibration is performed when the vehicleis driven at a speed of at least 22 mph(35 km/h) and will be interrupted if thevehicle is parked and the engine isswitched off. Calibration continues auto-matically in the background when drivingresumes.
When enough data has been collected to detecta low tire pressure situation, the tires' color in thecenter display will change to green. The systemwill not give any text confirmation when calibra-tion is finished although it will state if calibrationfails. When driving with heavy loads or at sus-tained highway speeds, the tire pressure shouldbe adjusted to the recommended inflation pres-sures. After adjusting inflation pressure, repeat steps1-8.
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 placard or tire inflation pressuretable. If correct reference values have not been set, the system cannot issue low tire pressurealerts correctly. The vehicle must be parked with the engine running to access the calibration button andto 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.

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PRACTICAL INFORMATION
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Related information
• Tire Pressure Monitoring System (TPMS) (p. 103)
• Checking tire inflation pressure (p. 104)
• Reinflating tires equipped with the TirePressure Monitoring System (TPMS)(p. 105)Tire sealing system 7
Certain models are equipped with a tire sealing system that enables you to temporarily seal ahole in the tread surface and re-inflate a flat tire,or to adjust a tire