2018 VOLVO XC90 T8 ECU

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Sharing Internet from the vehicle via Wi-Fi hotspot (tethering)533
No or poor Internet connection 534
Deleting Wi-Fi networks 535
Wi-Fi technology and security 535
Terms of use and data sharing 536
Activating and deactivating data sharing 536
Compatible file formats for media 536
Technical specifications for USB devices 537
Hard disk storage space 538
License agreement for audio and media 539
WHEELS AND TIRES
Tires550
Tire direction of rotation 552
Tread wear indicator 553
Tire terminology 553
Tire sidewall designations 554
Uniform Tire Quality Grading 556
Checking tire pressure 557
Adjusting tire pressure 558
Recommended tire pressure 559
Tire pressure monitoring system *
559
Calibrating the tire pressure monitor- ing system * 561
Viewing tire pressure status in thecenter display * 562
Action when warned of low tire pressure 563
When changing wheels 564
Tool kit 564
Jack *
565
Wheel bolts 565
Removing a wheel 566
Installing a wheel 568
Spare wheel 569
Accessing the spare wheel 570
Snow tires 571
Snow chains 571

Tire sealing system572
Using the tire sealing system 573
Inflate tires with the compressor included in the tire sealing system 577
Determining the vehicle's permittedweight 578

SAFETY
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WARNING
Do not squeeze box-like cargo between the rear seat cushion and the front seat backrest. If the rear seat backrests are folded down, cargo must be secured to prevent it from slid-ing forward against the front seat backrests inthe event of a collision.
WARNING
If a rear seat backrest is folded down or if a rear-facing child restraint is being used in therear seat, the seat in front must be moved for-ward so that it does not come into contactwith the backrest or child restraint.
Seating positionFor WHIPS to provide optimal protection, the driver and passenger must be seated correctlyand the system's function must not be impededin any way. Set the front seat to the correct seating position before starting to drive. The driver and the front seat passenger should sit in the center of the seat with their heads asclose as possible to the head restraints.
Related information
•Safety (p. 42)
• Manual front seats (p. 184)
• Power front seats
* (p. 185) •
Rear Collision Warning (p. 347)
Seat belts
Seat belts should always be worn by all occu- pants in your vehicle. Children should be prop-erly restrained using an infant seat, adjustablechild seat or booster cushion as determined byage, weight and height.
Most states and provinces make it mandatory for occupants of a vehicle to use seat belts.
Seat belt maintenanceCheck periodically that the seat belts are in goodcondition. Use water and a mild detergent forcleaning. Check the seat belt mechanism's func-tion as follows: attach the seat belt and pull rap-idly on the strap.

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Related information
•Safety mode (p. 61)
• Starting the vehicle (p. 424)
• Recovery (p. 477)
Child safety
Children should always be seated safely when traveling in the vehicle.
General informationVolvo recommends the proper use of restraint systems for all occupants including children.Remember that, regardless of age and size, achild should always be properly restrained in avehicle. Your vehicle is also equipped with ISOFIX/ LATCH attachments, which make it more conven-ient to install child seats. Some restraint systems for children are designed to be secured in the vehicle by lap belts or thelap portion of a lap-shoulder belt. Such childrestraint systems can help protect children invehicles in the event of an accident only if theyare used properly. However, children could beendangered in a crash if the child restraints arenot properly secured in the vehicle. Failure to fol-low the installation instructions for your childrestraint can result in your child striking the vehi-cle's interior in a sudden stop. Holding a child in your arms is NOT a suitable substitute for a child restraint system. In an acci-dent, a child held in a person's arms can becrushed between the vehicle's interior and anunrestrained person. The child could also beinjured by striking the interior, or by being ejectedfrom the vehicle during a sudden maneuver or impact. The same can also happen if the infant orchild rides unrestrained on the seat. Other occu-pants should also be properly restrained to helpreduce the chance of injuring or increasing theinjury of a child. All states and provinces have legislation govern- ing how and where children should be carried ina vehicle. Find out the regulations existing in yourstate or province. Recent accident statistics haveshown that children are safer in rear seatingpositions than front seating positions when prop-erly restrained. A child restraint system can helpprotect a child in a vehicle. Here's what to lookfor when selecting a child restraint system: It should have a label certifying that it meets applicable Federal Motor Vehicle Safety Stand-ards (FMVSS 213) - or in Canada, CMVSS 213. Make sure the child restraint system is approved for the child's height, weight and development -the label required by the standard or regulation,or instructions for infant restraints, typically pro-vide this information. In using any child restraint system, we urge you to carefully look over the instructions that areprovided with the restraint. Be sure you under-stand them and can use the device properly andsafely in this vehicle. A misused child restraintsystem can result in increased injuries for boththe infant or child and other occupants in thevehicle.

SAFETY
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Related information
•Safety (p. 42)
• Child restraints (p. 65)
• Activating and deactivating child safety locks (p. 259)
Child restraints
Suitable child restraints should always be used when children travel in the vehicle.
Child restraint systems
Infant seat
There are three main types of child restraint sys- tems: infant seats, convertible seats and boostercushions. They are classified according to thechild's age and size. The child restraint should be secured using a three-point seat belt, ISOFIX/LATCH anchors ortop tether anchors.
Convertible seat
WARNING
A child seat should never be used in the front passenger seat of any vehicle with a frontpassenger airbag - not even if the "Passengerairbag off" symbol near the rear-view mirror isilluminated. If the severity of an accident wereto cause the airbag to inflate, this could leadto serious injury or death to a child seated inthis position.

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Booster cushion
WARNING
Always refer to the child restraint manufactur- er's instructions for detailed information onsecuring the restraint.
WARNING
•When not in use, keep the child restraint system secured or remove it from thepassenger compartment to help prevent itfrom injuring passengers in the event of asudden stop or collision.
• A small child's head represents a consid-erable part of its total weight and its neckis still very weak. Volvo recommends thatchildren up to age 4 travel, properlyrestrained, facing rearward. In addition,Volvo recommends that children shouldride rearward facing, properly restrained,as long as possible.
Automatic Locking Retractor/ Emergency Locking Retractor (ALR/ELR)
To make child seat installation easier, each seat belt (except for the driver's belt) is equipped witha locking mechanism to help keep the seat belttaut.
When attaching the seat belt to a child seat:
1. Attach the seat belt to the child seat accord-
ing to the child seat manufacturer's instruc- tions.
2. Pull the seat belt out as far as possible.
3. Insert the seat belt latch plate into the buckle (lock) in the usual way. 4. Release the seat belt and pull it taut around
the child seat.
A sound from the seat belt retractor will be audi- ble at this time and is normal. The belt will nowbe locked in place. This function is automaticallydisabled when the seat belt is unlocked and thebelt is fully retracted.
WARNING
Do not use child safety seats or child booster cushions/backrests in the front passenger'sseat. We also recommend that children whohave outgrown these devices sit in the rearseat with the seat belt properly fastened.
Child restraint registration and recallsChild restraints could be recalled for safety rea- sons. You must register your child restraint to bereached in a recall. To stay informed about childsafety seat recalls, be sure to fill out and returnthe registration card that comes with new childrestraints. Child restraint recall information is readily availa- ble in both the U.S. and Canada. For recall infor-mation in the U.S., call the U.S. Government'sAuto Safety Hotline at 1-800-424-9393 or go tohttp://www-odi.nhtsa.dot.gov/cars/problems/recalls/register/childseat/index.cfm. In Canada,visit Transport Canada's Child Safety website athttp://www.tc.gc.ca/roadsafety/childsafety/menu.htm.

SAFETY
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Related information
•Child safety (p. 63)
• Infant seats (p. 67)
• Convertible seats (p. 69)
• Booster cushions (p. 71)
• Integrated booster cushion
* (p. 76)
• Top tether anchors (p. 72)
• Lower child seat attachment points (p. 74)
• ISOFIX/LATCH lower anchors (p. 74)
Infant seats
Suitable child restraints should always be used when children (depending on their age/size) areseated in the vehicle.
Securing an infant seat with a seat belt
Do not place the infant seat in the front passenger's seat
1. Place the infant seat in the rear seat of the vehicle.
2. Attach the seat belt to the infant seat according to the child restraint manufactur- er's instructions.
Route the seat belt through the infant seat.
WARNING
•An infant seat must be in the rear-facing position only.
• The infant seat should not be positionedbehind the driver's seat unless there isadequate space for safe installation.

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SAFETY
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WARNING
A child seat should never be used in the front passenger seat of any vehicle with a frontpassenger airbag - not even if the "Passengerairbag off" symbol near the rear-view mirror isilluminated. If the severity of an accident wereto cause the airbag to inflate, this could leadto serious injury or death to a child seated inthis position.
3.
Fasten the seat belt.
Fasten the seat belt by inserting the latch plate into the buckle (lock) until a distinctclick is audible.
Pull out the shoulder section of the seat belt.
4. Pull the shoulder section of the seat belt out as far as possible to activate the belt's auto- matic locking function.
NOTE
The locking retractor will automatically release when the seat belt is unbuckled andallowed to retract fully.
5. Press the infant seat firmly in place, let theseat belt retract and pull it taut. A sound from the seat belt retractor's automatic lockingfunction will be audible at this time and isnormal. The seat belt should now be lockedin place.
Check that the infant seat is properly secured.
6. Press and pull the infant seat along thedirection of the seat belt to check that it is properly held in place by the seat belt.

SAFETY
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WARNING
It should not be possible to move the child restraint more than 2.5 cm (1 in.) in any direc-tion along the seat belt path.
The infant seat can be removed by unbuckling the seat belt and letting it retract completely.
Related information
• Child restraints (p. 65)
• Convertible seats (p. 69)
• Booster cushions (p. 71)
• Top tether anchors (p. 72)
• Lower child seat attachment points (p. 74)
• ISOFIX/LATCH lower anchors (p. 74)
Convertible seats
Suitable child restraints should always be used when children (depending on their age/size) areseated in the vehicle.
Securing a convertible seat with a seat belt
Do not place the convertible seat in the front passeng- er's seat.
Convertible seats can be used in either a forward or rearward-facing position, depending on theage and size of the child.
Route the seat belt through the convertible seat.
WARNING
Always use a convertible seat that is suitable for the child's age and size. See the converti-ble seat manufacturer's recommendations.
1. Place the convertible seat in the rear seat of the vehicle.