2018 VOLVO XC90 trailer

STARTING AND DRIVING
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* Option/accessory.451
The automatic transmission selects the optimal gear for the current load and engine speed.
Steep inclines
Do not lock the automatic transmission into a higher gear than what the engine can handle
‒ it
is not always preferable to drive in high gears at low rpm.
Parking on a hill
1. Depress the brake pedal.
2. Apply the parking brake.3. Put the gear selector in P.
4. Release the brake pedal.Put chocks behind the wheels when the vehicle is parked on a hill with a trailer attached.
Starting on a hill
1. Depress the brake pedal. 2. Put the gear selector in D.
3. Release the parking brake.
4. Release the brake pedal and start driving.
Related information
• Trailer Stability Assist
* (p. 451)
• Checking trailer lights (p. 452)
• Towing capacity and tongue weight (p. 642)
• Overheating of engine and transmission (p. 446)
Trailer Stability Assist
*
Trailer Stability Assist (TSA 8
) is a function
designed to help stabilize a vehicle that is tow- ing a trailer when the vehicle and trailer havebegun to sway. The function is part of the Elec- tronic Stability Control system ESC 9
.
Reasons for swayingA vehicle towing a trailer may begin to sway for various reasons. Normally this only occurs at highspeeds. However, if the trailer is overloaded orunevenly distributed, e.g. too far back, there is arisk of swaying even at low speeds. Swaying may be caused by factors such as:
• The vehicle and trailer are hit by a sudden, strong crosswind.
• The vehicle and trailer are traveling on anuneven road or over a bump.
• Sudden movements of the steering wheel.
Once swaying has begun, it can be difficult orimpossible to stop it. This makes the vehicle andtrailer difficult to control and there is a risk ofswerving into oncoming traffic or driving off theroad.
Trailer Stability Assist functionTrailer Stability Assist continuously monitors thevehicle's movements, particularly lateral move- ments. If swaying is detected, the brakes areapplied individually on the front wheels, which hasa stabilizing effect on the vehicle and trailer. Thisis often enough to enable the driver to regaincontrol of the vehicle. If the Trailer Stability Assist function's first attempt is not adequate to stop the swayingmotion, the brakes are applied on all wheels andengine power is temporarily reduced. As theswaying motion begins to decrease and the vehi-cle and trailer have once again become stable,TSA stops regulating the brakes/engine powerand the driver regains control of the vehicle.
NOTE
Trailer Stability Assist is deactivated if the driver selects the sport mode by deactivating
ESC in the center display's menu system.
Trailer Stability Assist may not intervene if the driver tries to compensate for the swaying motionby moving the steering wheel rapidly, becausethe system will then not be able to determine if itis the trailer or the driver causing the swaying.
8
Trailer Stability Assist
9 Electronic Stability Control

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STARTING AND DRIVING
* Option/accessory.
452 When Trailer Stability Assist is activated, the
ESC symbol is
displayed in the instrument panel.
Related information
• Driving with a trailer (p. 449)
• Electronic Stability Control (p. 272)
Checking trailer lights
When connecting a trailer, make sure that all of the lights on the trailer are functioning beforestarting to drive.
Trailer turn signals and brake lightsIf one or more of the turn signals or brake lights on the trailer is not working, a symbol and mes-sage will be displayed in the instrument panel.The other lights on the trailer must be checkedmanually by the driver before the vehicle is driven.
SymbolMessage
•Trailer turn indicator Right
turn indicator malfunction
•Trailer turn indicator Left
turn indicator malfunction
•Trailer brake light Malfunc-
tion
If any of the trailer's turn signal lights is not work- ing, the turn signal symbol in the instrumentpanel will also flash more quickly than normal.
Trailer rear fog lightWhen a trailer is connected, the vehicle's rear foglight may not illuminate and rear fog light func-tionality is instead transferred to the trailer. If thisis the case, check to see if the trailer is equippedwith a rear fog light before activating the vehicle's fog lights when driving with a trailer to helpensure safe operation.
Checking trailer lights
*
Automatic check
When the trailer has been connected to the vehi- cle's electrical system, its lights can be checkedby automatically activating them. This functionhelps the driver check that the trailer's lights arefunctioning correctly before starting to drive. In order to perform this check, the engine must be turned off.
1. When a trailer is connected to the towbar,
the message
Automatic Trailer Lamp
Check will appear in the instrument panel.
2. Acknowledge the message by pressing the O button on the right-side steering wheel
keypad.
> The light check will begin.
3. Get out of the vehicle to perform the check. > All of the lights on the trailer will beginflashing, and then illuminate separately one at a time.
4. Visually check that all of the trailer's lights are functioning correctly.
5. After a short time, all of the trailer's lights will start flashing again.
> The light check is completed.

STARTING AND DRIVING
}}
453
Disabling the automatic check
The automatic light check can be disabled in the center display. 1.Tap
Settings in the Top view.
2. Tap
My CarLights and Lighting.
3. Deselect
Automatic Trailer Lamp Check.
Manual check
If the automatic check has been disabled, the check can be started manually. 1.Tap
Settings in the Top view.
2. Tap
My CarLights and Lighting.
3. Select
Manual Trailer Lamp Check.
> The light check will begin. Get out of the vehicle to perform the check.
Related information
• Driving with a trailer (p. 449)
Towing using a towline
This section refers to one vehicle being towed behind another using a towline.
Before towing another vehicle, check applicable speed limit regulations.
Preparations and towing
CAUTION
Note that the vehicle must always be towed with the wheels rolling forward.
• Do not tow a vehicle with automatictransmission at a speed greater than80 km/h (50 mph) or for a distancegreater than 80 km (50 miles).
WARNING
•
Ignition mode
II must be active – all air-
bags are deactivated in ignition mode I.
• Always have the remote key in the vehicle when it is towed.
WARNING
The brake and steering servos do not work when the engine is off – it takesabout 5 times more pressure on the brakepedal and steering requires much more effortthan normal. 1. Turn on the hazard warning flashers.
2. Attach the towline to the towing eyelet.3.
Put the vehicle in ignition mode II – without
pressing the brake pedal, turn the start knob clockwise and hold it there for about4 seconds. Release the knob, which willautomatically return to its original position.
4. Move the gear selector to neutral ( N) and
release the parking brake. If the battery charge level is too low, it may not be possible to release the parking brake.Connect an auxiliary battery to the vehicle ifthe battery is discharged.
> The towing vehicle can now start driving.
5. Keep the towline taut when the towing vehi- cle slows down by applying light pressure to the brake pedal. This will help avoid jarringmovements.
6. Be prepared to apply the brakes to stop the vehicle.
Jump startingDo not tow the vehicle to start the engine. Use anauxiliary battery if the start battery's charge levelis so low that the engine cannot be started.

WHEELS AND TIRES
556
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. 564)

LOADING, STORAGE AND PASSENGER COMPARTMENT
* Option/accessory.565
WARNING
In a head-on collision at a speed of 50 km/h (30 mph), an unsecured object weighing 20kg (44 pounds) can reach a projectile weightequivalent to 1000 kg (2200 pounds).
WARNING
If objects are loaded higher than the upper edge of the side windows, leave a 10 cm (4in.) space between the objects and the win-dow. Objects placed closer to this couldimpede the function of the inflatable curtainconcealed inside the headlining.
WARNING
Always secure the load. Otherwise, it may shift during heavy braking and injure people in thevehicle. Cover sharp edges and sharp corners with something soft. Turn off the engine and apply the parking brake when loading/unloading long objects.Otherwise, it is possible for the load to reachthe gear lever or gear selector and move it toa drive position – which could cause the vehi-cle to begin rolling.
Extra cargo space
The rear seat backrests can be folded down to increase cargo compartment space and simplifyloading. If the rear seat backrests are folded down, make sure that no objects loaded into thevehicle prevent the WHIPS system for the frontseats from functioning correctly.
Raising/lowering the rear end of the vehicle
*
The rear end of the vehicle can be lowered or raised for easier loading or to facilitate attaching a trailer*.
The controls for raising/lowering are located at the rear edge of the cargo compartment's rightside panel.
Controls for raising/lowering the rear end of the vehicle.
The controls consist of two buttons ‒ one button
for lowering and one button for raising the rear end. Press and hold the relevant button until thedesired height is reached. The rear end of the vehicle cannot be raised higher than its normal height. The rear end will return to the normal heightwhen the vehicle begins driving.
NOTE
It is not possible to adjust the height of the vehicle's rear when one or more of the doorsor the hood is open. This does not apply tothe tailgate.
WARNING
Make sure that no people, animals or objects are found under the vehicle when it is low-ered. This could endanger life and causedamage to the vehicle or objects.
Related information
•
Load anchoring eyelets (p. 567)
• Folding the second row backrests (p. 196)
• Roof loads and load carriers (p. 566)
• Leveling control
* and suspension (p. 432)
• Weights (p. 641)

SPECIFICATIONS
* Option/accessory.
642
Towing capacity and tongue weight Towing capacity and tongue weight are shown in the tables below.
Category
USA
(lbs)Canada(kg)
Max. trailer weights Without brakes:
1650 750
With brakes (AWD): 5000 2250
With brakes (FWD): 4000 1800
Max. tongue weight AWD:
500 225
FWD: 400 180
CAUTION
•The maximum trailer weights listed are only applicable for altitudes up to 3280 ft(1,000 m) above sea level. With increas-ing altitude the engine power and there-fore the car's climbing ability are impairedbecause of the reduced air density, sothe maximum trailer weight has to bereduced accordingly. The weight of thecar and trailer must be reduced by 10%for every further 3280 ft (1,000 m) (orpart thereof).
Related information
• Type designations (p. 636)
• Weights (p. 641) •
Driving with a trailer (p. 449)
• Trailer Stability Assist
* (p. 451)

INDEX
649
1, 2, 3 ...
4WD 423
A
ABSanti-lock brakes 409
AC (Air conditioning) 233
ACC - Adaptive Cruise Control 293, 296, 297, 298, 299, 300, 302, 303, 304, 305, 307
Accessories and extra equipment 35 installation 36
Accessory installation warning 36
Active Bending Lights 161
Adapting driving characteristics 270, 423
Adaptive Cruise Control 293, 296, 297, 298, 299, 300, 302, 303, 304, 305, 307
change cruise control functionality 305
function 293
manage speed 297, 298
pass 302, 303
radar sensor 324
set time interval 299, 300
troubleshooting 305
Adjusting the steering wheel 203
Airbag 52 activation/deactivation 56
driver's side 53
passenger side 53, 56
Air bag, see Airbag 52
Air conditioning 233Air conditioning, fluid volume and grade 646
Air distribution 212 air vents 212, 213
changing 212
defrosting 225
recirculation 224
table showing options 214
Air quality 209, 210 allergy and asthma 210
passenger compartment filter 211
Air recirculation 224
Alarm 266 deactivating 267
Allergy and asthma-inducing substances 210
All Wheel Drive, AWD 423
All Wheel Drive (AWD) 423
All Wheel Drive (four-wheel drive) 423
Android Auto 496, 498 Antenna location 255Apple CarPlay 493, 495
Approach lighting 164
Apps 465
Assistance at risk of collision 370, 371, 372, 373, 374, 375, 376, 378
Audio and media 464Audio system HD digital radio 475 SiriusXM ® Satellite radio 476, 477, 478
Auto-climate 223
Auto hold 415
Auto-hold brakes 415 activate and deactivate 416
after collision 417
Automatic car wash 623 Automatic engine stop auto-stop 428
Automatic high beam 159
Automatic locking 259
Automatic relocking 239, 252
Automatic Speed Limiter 280, 282, 283
Automatic transmission 418 kickdown 422
oil 645
Trailer 449
INDEX

INDEX
652CZIP (Clean Zone Interior Package) 210
D
Data
recording 33 transferring between vehicle and work-
shop 578
Data sharing 514
Daytime running lights 156Decals location of 636
Defrosting 225
Detection of cyclist 337
Dimensions 639
Dipstick, electronic 588
Direction of rotation 530
Disengaging the shiftlock 421
Display lighting 167
Distance Alert 289, 290, 291 limitations 292
DivX ®
490
Door mirrors 173, 175 compass 459, 460
dimming 174
outer 173, 175
power folding 175
resetting 175
Driveline transmission 417
Drive mode 423 changing 425
Driver Alert Control 360 operation 361, 362
Driver Alert Control limitations 362
Driver performance 92, 93
Driver profile 139 edit 141
select 140
Driver support system 270 Driving cooling system 446
with a trailer 449
Driving economy 438
Driving through standing water 441 driving with a trailer towball load 642
towing capacity 642E
ECO climate 426
ECO mode 426
activate with function button 428
Economical driving 426, 438
Electrical outlet 560 use 562
Electrical system 598
Electric parking brake 411
Electronic immobilizer 250
emergency brake lights 163
Emission inspection readiness 576 Engine overheating 446
start 404
Start/Stop 428
turn off 406
Engine braking, automatic 437 Engine compartment coolant 590
engine oil 587
overview 587
Engine drag control 272
Engine oil 587 filling 588