2018 VOLVO XC90 TWIN ENGINE tow bar

WHEELS AND TIRES
578Determining the vehicle's permitted
weight
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 your
vehicle's weight ratings, with or without a trailer,
from the vehicle's Federal/Canadian Motor Vehi-
cle Safety Standards (FMVSS/CMVSS) label, and
the vehicle's tire information placard:
Curb weight
The weight of the vehicle including a full tank of
fuel and all standard equipment. It does not
include 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 Motor
Vehicle Safety Standards (FMVSS/CMVSS) label.
The total load on each axle must never exceed its
maximum 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 your
vehicle.
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 equals
1400 lbs. and there will be five 150 lb. pas-
sengers in your vehicle, the amount of availa-
ble cargo and luggage load capacity is 650
lbs. (1400 - 750 (5 × 150) = 650 lbs.)
5. Determine the combined weight of luggage and cargo being loaded on the vehicle. That
weight may not safely exceed the available
cargo and luggage load capacity calculated
in Step 4.
6. If your vehicle will be towing a trailer, load from your trailer will be transferred to your
vehicle. Consult this manual to determine
how 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 weight
rating limits can cause tire overheating
resulting in permanent deformation or
catastrophic failure.
• Do not use replacement tires with lower
load carrying capacities than the tires that
were original equipment on the vehicle
because this will lower the vehicle's GVW
rating. Use only tires with the correct load
carrying capacity. Consult your Volvo
retailer 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
. Function
AA Heated rear window
30Power rear seat
B
20B Pneumatic suspension* compres-
sor 40Rear electric heater (right-hand
side)
30Electrical outlets in the tunnel
console between the rear seats
B30
B Rear electric heater (left-hand
side)
30Power rear seat (right-hand side)
B
20B Control module for reduction of
nitrous oxides (diesel)
30Power tailgate*
25Power front passenger seat*
20 Function
AA 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 –
– –
– –
– Function
AA 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, 474 Tunnel detection
155
Turn off engine 426
Turn signals 158
Twin Engine general 406
Type approval radar system 330
U Uniform Tire Quality Grading
556
Units
132
Unknown vehicle component 270
Unlocking settings 242
with key blade 251
USB socket for connecting media 514
V Vehicle care 638, 639, 641, 642, 643, 644
leather upholstery
636
Vehicle Event Data 33
Vehicle functions in the center display 122