Page 547 of 687

WHEELS AND TIRES
* Option/accessory.545
Checking tire pressure
Correct inflation pressure helps improve driv- ing stability, save fuel and increase the serv-ice life of the tires.
Tire pressure decreases over time, which is normal. Tire pressure also varies depending onthe ambient temperature. Driving on under-inflated tires could cause the vehicle to over-heat and lead to damage. Tire pressure affectstraveling comfort, road noise and driving cha-racteristics. Check the pressure in the tires every month. Use the recommended inflation pressure forcold tires to help maintain good tire perform-ance. Under-inflated or over-inflated tirescould cause uneven tread 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 recommends buying a relia- ble air pressure gauge, as the automaticgauges provided at service stations may beinaccurate.
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 ofvehicle control and increased risk ofinjury.
Under-inflated tires reduce the loadcarrying capacity of your vehicle.
Cold tiresInflation pressure should be checked when thetires are cold. The tires are considered to becold when they have the same temperature asthe surrounding (ambient) air. This tempera-ture is normally reached after the vehicle hasbeen parked for at least 3 hours. After driving for approximately 1.6 km (1 mile), the tires are considered to be warm. If youneed to drive longer than that to inflate thetires, check and record the inflation pressureof the tires first and inflate accordingly whenyou arrive at the pump. When the ambient temperature changes, so does the inflation pressure. A 10-degree tem-perature drop causes a corresponding drop ininflation pressure of 1 psi (7 kPa). Check theinflation pressure of the tires regularly andadjust to the correct pressure, which can be found on the vehicle's tire information decal orcertification label. If you check inflation pressure when the tires are warm, you should never release air. Thetires become warm after driving and it is nor-mal for warm tires to have an inflation pres-sure above the recommended pressure forcold tires. A warm tire with an inflation pres-sure equal to or under the recommended pres-sure for cold tires could be significantly under-inflated.Related information
Adjusting tire pressure (p. 546)
Recommended tire pressure (p. 547)
Tire pressure monitoring system
*
(p. 547)
Tires (p. 538)
4
Not available in all models.
Page 568 of 687

||
WHEELS AND TIRES
5664. 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 10minutes at a 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 releaseair.
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. Fol- low local regulations for disposal.
Related information
Recommended tire pressure (p. 547)
Using the tire sealing system (p. 562)
Tire sealing system (p. 561)
Determining the vehicle's permitted weight
Properly loading your vehicle will provide maximum return of vehicle design perform-ance.
Weight designationsBefore loading your vehicle, familiarize your- self with the following terms for determiningyour vehicle's weight ratings, with or without atrailer, from the vehicle's Federal/CanadianMotor Vehicle Safety Standards (FMVSS/CMVSS) label, and the vehicle's tire informa-tion placard:
Curb weight
The weight of the vehicle including a full tank of fuel and all standard equipment. It does notinclude passengers, cargo, or optional equip-ment.
Capacity weight
All weight added to the curb weight, including cargo and optional equipment. When towing,towbar weight is also part of cargo weight.
Permissible axle weight
The maximum allowable weight that can be carried by a single axle (front or rear). Thesenumbers are shown on the Federal/CanadianMotor Vehicle Safety Standards (FMVSS/CMVSS) label. The total load on each axlemust never exceed its maximum permissibleweight.
Page 613 of 687

MAINTENANCE AND SERVICE
611
Hybrid battery The vehicle's electric motor is powered by a rechargeable, maintenance-free, lithium-ionhybrid battery.
NOTE
The vehicle cannot be started if the hybrid battery is discharged.
NOTE
If both the starter battery and the hybrid battery are discharged, both batteries
must be charged. In such cases, it is notpossible to charge only the hybrid batteryfirst. The starter battery must have a certain level of charge for it to be possible tocharge the hybrid battery.
WARNING
Hybrid battery replacement may only be performed by a workshop – an authorizedVolvo workshop is recommended.
CoolantThe hybrid battery's cooling system has its own expansion tank.
CAUTION
Filling the hybrid battery coolant should only be performed by a workshop – anauthorized Volvo workshop is recom-mended.
Specifications for hybrid batteryType: Lithium-ion
Power reserve: 11.6 kWh.
NOTE
The capacity of the hybrid battery decrea- ses with age and use, which could result inincreased use of the combustion engine,leading to higher fuel consumption andreduced electric motor range.
Related information
Battery symbols (p. 612)
Start battery (p. 607)
Charging the hybrid battery (p. 385)
Battery recycling (p. 612)
Page 682 of 687

INDEX
680Tire tread 541
Tools 552Top tether anchors (child restraint sys-
tems) 75
Top view 135
Total airing function 238
Towbar 455
removable, attaching, installing,
mounting 455
removable, removing, detaching 455
retractable 453
Towing 461
Towing capacity and towball load 660
Towing eyelet 461TPMS - Tire Pressure Monitoring Sys-
tem 547
Traction control 273
Traffic information 478 Trailer driving with a trailer 457
Lamps 460
swaying 459
Trailer Stability Assist 274 trailer 459
Trailer stabilizer 274, 459
Trailer towing trailer hitch 455
Transmission 416 automatic 417, 418
Transmission fluid grade 663
Travel Link 486 Fuel 489
Notifications 488
Sports 490
weather 487
Tread depth 541 winter tires 559
Tread wear indicator 541
Trip computer 91 display in instrument panel 93
Trip odometer 91
Trip odometer resetting 94
Trip statistics 94 settings 95
Troubleshooting Adaptive Cruise Control 287
Camera unit 313
City Safety 328
Radar unit 313
TSA - Trailer Stability Assist 459
Tunnel detection 159Turn off engine 404
Turn signals 162Twin Engine general 384
Type approval HomeLink ® 466
radar system 310
U
Uniform Tire Quality Grading 544
Units 135 Unlocking settings 241
with key blade 250
USB socket for connecting media 498
V
Vehicle care 638, 639, 641, 642, 643, 644
leather upholstery 636
Vehicle Event Data 35 Vehicle functions in the center display 125