2018 VOLVO XC90 T8 tow bar

WHEELS AND TIRES
578
Determining the vehicle's permittedweight
Properly loading your vehicle will provide maxi- mum return of vehicle design performance.
Weight designationsBefore loading your vehicle, familiarize yourself with the following terms for determining yourvehicle's weight ratings, with or without a trailer,from the vehicle's Federal/Canadian Motor Vehi-cle Safety Standards (FMVSS/CMVSS) label, andthe vehicle's tire information 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 equipment.
Capacity weight
All weight added to the curb weight, including cargo and optional equipment. When towing, tow-bar weight is also part of cargo weight.
Permissible axle weight
The maximum allowable weight that can be car- ried by a single axle (front or rear). These num-bers are shown on the Federal/Canadian MotorVehicle Safety Standards (FMVSS/CMVSS) label.The total load on each axle must never exceed itsmaximum permissible weight.
Gross vehicle weight (GVW)
The vehicle's curb weight + cargo + passengers.
Steps for Determining Correct Load Limit
1. Locate the statement "the combined weight of occupants and cargo should never exceed XXX kg or XXX lbs." on your vehicle's plac-ard.
2. Determine the combined weight of the driver and passengers that will be riding in yourvehicle.
3. Subtract the combined weight of the driver and passengers from XXX kg or XXX lbs.
4. The resulting figure equals the available amount of cargo and luggage load capacity.For example, if the "XXX" amount equals1400 lbs. and there will be five 150 lb. pas-sengers in your vehicle, the amount of availa-ble cargo and luggage load capacity is 650lbs. (1400 - 750 (5 × 150) = 650 lbs.)
5. Determine the combined weight of luggage and cargo being loaded on the vehicle. Thatweight may not safely exceed the availablecargo and luggage load capacity calculatedin Step 4.
6. If your vehicle will be towing a trailer, load from your trailer will be transferred to yourvehicle. Consult this manual to determinehow this reduces the available cargo and lug-gage load capacity of your vehicle.
WARNING
• Exceeding the permissible axle weight, gross vehicle weight, or any other weightrating limits can cause tire overheatingresulting in permanent deformation orcatastrophic failure.
• Do not use replacement tires with lowerload carrying capacities than the tires thatwere original equipment on the vehiclebecause this will lower the vehicle's GVWrating. Use only tires with the correct loadcarrying capacity. Consult your Volvoretailer for information.
Related information
• Loading recommendations (p. 586)

MAINTENANCE AND SERVICE
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* Option/accessory.631
Positions
•Fuses 13-17 and 21-36 are "Micro" fuses.
• Fuses 1-12, 18-20 and 37 are "MCase" fuses and should only be replaced by a work- shop 19
.
FunctionAA
Heated rear window 30
Power rear seat B
20B
Pneumatic suspension
* compres-
sor 40
Rear electric heater (right-hand side)
30
Electrical outlets in the tunnel console between the rear seats
B30
B
Rear electric heater (left-hand side) 30
Power rear seat (right-hand side)
B
20B
Control module for reduction of nitrous oxides (diesel) 30
Power tailgate
* 25
Power front passenger seat
*20
FunctionAA
Towbar
* control module 40
Seat belt tensioner module (right side) 40
Internal relay windings 5
Control module for reduction of nitrous oxides (diesel)15
Foot movement detection module for opening the power tailgate
*5
USB hub/accessory port –
Module for electrically folding third-row seats
* 20
Towbar
* control module 25
Power driver seat
* 20
Seat belt tensioner module (left side) 40
Park Assist Camera
*5
– –
– –
– –
FunctionAA
Feed when ignition is on 10
Control module for airbags and seat belt tensioners 5
Cooler
B
; Heated/cooled cup
holder (rear) B 10
B
Heated rear seat (left side)
*15
– –
Blind Spot Information (BLIS)
*;
Exterior reverse signal control module 5
– –
Modules for seat belt tensioners 5
Emissions system actuator (gaso- line, certain engine variants)
5
– –
– –
Heated rear seat (right side)
*15
– –
A
Ampere
B Excellence
19 An authorized Volvo workshop is recommended.

INDEX
679
removal 566
rotation 551
specifications 554, 665
storage 550
tire pressure monitoring 559
tire sealing 572
Tread depth 571
tread wear indicator 553
winter tires 571
Tire sealing system 573
Tire tread 553
Tools 564 Top tether anchors (child restraint sys- tems) 72
Total airing function 239, 257
Towbar 471 removable, attaching, installing, mount-
ing 471
removable, removing, detaching 471
Towing 476
Towing capacity and towball load 660
Towing eyelet 476
TPMS - Tire Pressure Monitoring System 559
Traction control 274
Traffic information 493
Trailer 474 driving with a trailer 472
Lamps 475
swaying 474
Trailer Stability Assist 474 trailer 474
Trailer stabilizer 274 Trailer towing trailer hitch 471
Transmission 438 automatic 439
Transmission fluid grade 663
Travel Link 502 Fuel 505
Notifications 504
Sports 506
weather 503
Tread depth 553, 571
Tread wear indicator 553
Trip computer 89, 90
Trip odometer 89
Trip odometer resetting 91
Trip statistics 92 Troubleshooting Adaptive Cruise Control 307
Troubleshooting the camera sensor 332
TSA - Trailer Stability Assist 274, 474Tunnel detection 155
Turn off engine 426
Turn signals 158Twin Engine general 406
Type approval radar system 330
U
Uniform Tire Quality Grading 556
Units 132
Unknown vehicle component 270 Unlockingsettings 242
with key blade 251
USB socket for connecting media 514
V
Vehicle care 638, 639, 641, 642, 643, 644leather upholstery 636
Vehicle Event Data 33 Vehicle functions in the center display 122