traction control VOLVO XC90 TWIN ENGINE 2020 User Guide

STARTING AND DRIVING
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* Option/accessory.443
Leveling control settings *
Turn off leveling control before lifting the vehicle with a jack to help avoid problemswith the pneumatic suspension. The vehicle can be lowered or raised to make it easier to load or for passengers to get inand out.
Adjusting loading mode
Use the buttons in the cargo compartment to raise or lower the rear section of the vehicle tofacilitate loading or unloading the vehicle orconnecting or disconnecting a trailer.
Center display settings
Easy Entry and Exit Suspension Control
The vehicle can be lowered to make it easier to get in and out. Activating easy entry in the center display: 1.
Tap
Settings in the Top view.
2. Tap
My CarMirrors and Convenience.
3. Select
Easy Entry and Exit Suspension
Control.
> When the vehicle is parked and the engine is turned off, the level is low- ered. (Level adjustment will stop if aside door is opened and will resumeafter a slight delay when the door hasbeen closed.) When the engine isstarted and the vehicle begins to move,the level will be raised to the height setby the selected drive mode.
Disable Leveling Control
In certain situations, this function must be turned off, e.g. before the vehicle is raised using a jack *. The level difference caused by
raising the vehicle with a jack could cause problems with the pneumatic suspension. Turning off the function in the center display:1. Tap
Settings in the Top view.
2. Tap
My CarParking Brake and
Suspension.
3. Select
Disable Leveling Control.
Related information
Leveling control
* and suspension (p. 440)
Loading recommendations (p. 585)
Low Speed Control
The low-speed function (LSC 10
) facilitates
and improves control and traction on rough roads and slippery surfaces, e.g. when towinga trailer on grass or up boat ramps. The function is included in the
Off Road drive
mode.
Low Speed Control is designed for driving on rough roads and when towing trailers at lowspeeds, up to approximately 40 km/h (25mph). When driving at low speeds, LSC prioritizes low gears and all-wheel drive to help avoidwheel spin and improve traction on all wheels.The accelerator pedal will be less responsiveto improve traction and speed control at lowspeeds. The function is activated together with Hill Descent Control (HDC 11
), which makes it pos-
sible to control speed going down steep hills using the accelerator pedal and reduces theneed to use the brake pedal. The systemmakes it possible to maintain a low and uni-form speed when driving down steep hills.

STARTING AND DRIVING
445
Hill Descent Control
The function for assisting when driving down- hill (HDC 12
) is a low-speed function with
increased engine braking. The function makes it possible to increase or decrease thevehicle's speed on steep downhill gradientsby only using the accelerator pedal, withoutapplying the brakes. The function is included in the
Off Road drive
mode.
HDC is designed for driving on rough roads at low speeds and downhill gradients with slip-pery or otherwise difficult road surfaces. Thedriver does not need to use the brake pedalbut can instead focus on steering.
WARNING
HDC is only intended to be a supplemen- tary braking aid and it does not function inall situations. The driver is always ultimately responsible for operating the vehicle in a safe manner.
FunctionHill Descent Control allows the vehicle to move forward or backward at very low speedsassisted by the brake system. The driver canincrease the speed by pressing the acceleratorpedal. When the accelerator pedal is released, the vehicle will return to very low speedregardless of how steep the hill is and withoutthe brakes needing to be applied. The brakelights will illuminate when the function is acti-vated. The driver can brake to stop or slow the vehi- cle at any time by depressing the brake pedal. HDC is activated along with Low Speed Con- trol (LSC
13
), which facilitates and improves
traction and control on rough and slippery sur- faces. The system is intended to be used atlow speeds, up to approximately 40 km/h (25mph).
To keep in mind when using HDC
If the function is switched off while drivingon a steep downhill gradient, brakingeffect will be gradually reduced.
HDC can be used in gear positions
D and
R , and in manual gears 1 or 2.
It is not possible to manually shift to thirdgear or higher when HDC is active.
NOTE
When LSC with HDC is activated in theOff Road drive mode, the feel of the accel-
erator pedal and engine response will change.
NOTE
This drive mode is not designed to be used for normal street driving.
NOTE
The function is deactivated when driving at high speeds and must be reactivated atlower speeds if so desired.
Related information
Activating and deactivating Hill Descent Control using the function button (p. 446)
Changing drive mode (p. 438)
Low Speed Control (p. 443)
All Wheel Drive (AWD) (p. 431)
12
Hill Descent Control
13 Low Speed Control

STARTING AND DRIVING
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451
Slippery driving conditionsTo help optimize traction and roadholding, Volvo recommends using snow tires on allwheels whenever there is a risk of snow or iceon the road.
NOTE
Certain countries require use of winter tires by law. Not all countries permit the use ofstudded tires.
Practice driving on slippery surfaces under controlled conditions to learn how the vehiclereacts.
Related information
Snow tires (p. 567)
Snow chains (p. 567)
Braking on salted roads (p. 420)
Braking on wet roads (p. 420)
Filling washer fluid (p. 656)
Start battery (p. 613)
Replacing windshield wiper blades(p. 654)
Changing rear window wipers (p. 653)
Refilling coolant (p. 610)
Driving through standing water
It may be necessary to drive the vehicle through standing water, e.g. deep puddles orflooding on the road. This must be done withgreat caution.
To help prevent damage to the vehicle when driving through water:
Do not drive in water higher than the floorof the vehicle. If possible, check the depthof the water at its deepest point beforedriving through it. Be particularly carefulwhen driving through flowing water.
Always select the
Off Road drive mode
before driving in water to ensure the gaso- line engine is running.
Do not drive faster than walking speed.
Do not stop the vehicle in the water. Drivecarefully forward or back the vehicle out ofthe water.
Remember that waves created by passingvehicles could cause the water level to riseabove the vehicle's floor level.
Avoid driving through salt water to helpavoid the risk of corrosion.
CAUTION
Parts of the vehicle (e.g. engine, transmis- sion, driveline, electrical components, etc.)can be damaged if the vehicle is driventhrough water higher than its floor level.Damage to any components caused byflooding, vapor lock or insufficient oil is notcovered under warranty. If the engine stalls while the vehicle is in water, do not attempt to restart it. Havethe vehicle towed on the bed of a towtruck to a workshop - an authorized Volvoworkshop is recommended.
CAUTION
Because it can be difficult to determine the water depth, Volvo recommends not driv-ing through standing or running water. Thedriver is always responsible for operatingthe vehicle in a safe manner and adheringto all applicable laws and regulations.
When you have passed the water, press lightly on the brake pedal and check that the brakesare functioning properly. Water, mud, slush,etc. can make the brake linings slippery,resulting in delayed braking effect. If the vehicle is equipped with a trailer cou- pling contact, clean the contact after driving inwater or mud.

STARTING AND DRIVING
457
WARNING
Never carry a cell phone that is switched
on while refueling your vehicle. If the
phone rings, this may cause a spark that could ignite gasoline fumes, resulting in fireand injury.
WARNING
Carbon monoxide is a poisonous, colorless, and odorless gas. It is present in all exhaustgases. If you ever smell exhaust fumesinside the vehicle, make sure the passengercompartment is ventilated, and immedi-ately return the vehicle to a trained andqualified Volvo service technician for cor-rection.
Demanding drivingIn demanding driving conditions, such as when towing a trailer or driving in hot weatheror for prolonged periods at high altitudes, itmay be a good idea to switch to a higher- octane fuel (AKI 14
91 or higher) or to switch to
another brand of gasoline in order to fully uti- lize the vehicle's engine capacity and optimizetraction.
Related information
Fuel (p. 454)
Emission controls (p. 457)
Emission controls
Three-way catalytic converter
Keep your engine properly tuned. Certain engine malfunctions, particularly involvingthe electrical, fuel or distributor ignitionsystems, may cause unusually high three-way catalytic converter temperatures. Donot continue to operate your vehicle if youdetect engine misfire, noticeable loss ofpower or other unusual operating condi-tions, such as engine overheating or back-firing. A properly tuned engine will helpavoid malfunctions that could damage thethree-way catalytic converter.
Do not park your vehicle over combustiblematerials, such as grass or leaves, whichcan come into contact with the hotexhaust system and cause such materialsto ignite under certain wind and weatherconditions.
Excessive starter cranking (in excess ofone minute), or an intermittently firing orflooded engine can cause three-way cata-lytic converter or exhaust system over-heating.
Remember that tampering or unauthor-ized modifications to the engine, theEngine Control Module, or the vehicle maybe illegal and can cause three-way cata-lytic converter or exhaust system over- heating. This includes: altering fuel injec-tion settings or components, alteringemission system components or locationor removing components, and/or repeateduse of leaded fuel.
NOTE
Unleaded fuel is required for vehicles with three-way catalytic converters.
Heated oxygen sensorsThe heated oxygen sensors monitor the oxy- gen content of the exhaust gases. Readingsare fed into a control module that continuouslymonitors engine functions and controls fuelinjection. The ratio of fuel to air into the engineis continuously adjusted for efficient combus-tion to help reduce harmful emissions.
Related information

Octane rating (p. 455)
Fuel (p. 454)
14
AKI (Anti Knock Index) is an average value of RON (Research Octane Number) and MON (Motor Octane Number) - (RON)+(MON)/2

AUDIO, MEDIA AND INTERNET
* Option/accessory.
478
Audio, media and Internet
The audio and media system consists of a media player and a radio. A cellular phone canalso be connected through Bluetooth to usehands-free functions or play music in thevehicle. When the vehicle is connected to theInternet, it is also possible to use apps to playmedia.
Audio and media overview
The functions can be controlled using voice commands, the steering wheel keypad or thecenter display. The number of speakers andamplifiers varies depending on the audio sys-tem installed in the vehicle.
System updates
The audio and media system is continuously improved. It is recommended to download system updates as soon as they are available.
Related information
Media player (p. 499)
Radio (p. 482)
Phone (p. 515)
Internet-connected vehicle
* (p. 524)
Apps (p. 480)
Voice Control (p. 148)
Ignition modes (p. 415)
Driver distraction (p. 41)
Handling system updates via DownloadCenter (p. 600)
License agreement for audio and media(p. 533)
Handling system updates via DownloadCenter (p. 600)
Sound settings
Sound reproduction quality is preset but can also be adjusted.
The system's volume is normally adjusted using the volume control below the center dis-play or the right-side steering wheel keypad.This applies, for example, when playing musicor the radio or during phone calls and activetraffic messages.
Sound reproductionThe audio system is precalibrated using digitalsignal processing. This calibration takes intoaccount speakers, amplifiers, passenger com-partment acoustics, listener position, etc. foreach combination of vehicle model and audiosystem. There is also a dynamic calibrationthat takes into account the volume control set-ting and the vehicle's speed.
Personal settingsDifferent settings are available in Top view under
SettingsSound depending on the
vehicle's sound system.
Premium Sound * (Bowers & Wilkins)
Tone - setting for e.g. bass, treble, equal-
izer, etc.

Balance - balance between right/left and
front/rear speakers.

System Volumes – adjusts volume in the
various systems of the car, e.g. Voice

WHEELS AND TIRES
546
TiresThe function of the tires is to carry loads, pro- vide traction on road surfaces, reduce vibra-tions and protect the wheels from wear.
The tires significantly influence the vehicle's driving characteristics. The type, dimensions,tire pressure and speed rating have a consid-erable impact on how the vehicle performs. Your vehicle is equipped with tires according to the vehicle's tire information placard on theB-pillar (the structural member at the side ofthe vehicle, at the rear of the driver's dooropening).
WARNING
A damaged tire could cause the driver to lose control of the vehicle.
CAUTION
Some Volvo models are equipped with an Ultra High Performance tire and wheelcombination designed to provide maxi-mum dry pavement performance with con-sideration for hydroplaning resistance.They may be more susceptible to road haz-ard damage and, depending on drivingconditions, may achieve a tread life of lessthan 30,000 km (20,000 miles). Even ifthis vehicle is equipped with Volvo'sadvanced AWD or stability system, thesetires are not designed for winter driving,and should be replaced with winter tireswhen weather conditions dictate.
The tires have good road holding characteris- tics and offer good handling on dry and wetsurfaces. It should be noted however that thetires have been developed to give these fea-tures on snow/ice-free surfaces. Most models are equipped with "all-season" tires, which provide a somewhat higherdegree of roadholding on slippery road surfa-ces than tires without the "all-season" rating.However, for optimal roadholding on icy orsnow-covered roads, Volvo recommendssnow tires on all four wheels. When replacing tires, be sure that the newtires are the same size designation, type(radial) and preferably from the same manu-facturer, on all four wheels. Otherwise there isa risk of altering the vehicle's roadholding andhandling characteristics.
Recommended tiresOn delivery, the car is equipped with Volvo original tires that have the VOL
1
marking on
the side of the tires. These tires have been designed specifically for your vehicle. It istherefore important when replacing tires thatthe new tires have this same marking to helpmaintain the vehicle's driving characteristics,comfort and fuel consumption.
New tires
1 This may vary for certain tire dimensions.

WHEELS AND TIRES
552
Uniform Tire Quality GradingALL PASSENGER VEHICLE TIRES MUST CONFORM TO FEDERAL SAFETYREQUIREMENTS IN ADDITION TO THESEGRADES .
Quality grades can be found, where applica- ble, on the tire sidewall between the treadshoulder and maximum section width. Forexample: Treadwear 200 Traction AA Temperature A
TREADWEARThe treadwear grade is a comparative rating based on the wear rate of the tire when testedunder controlled conditions on a specifiedgovernment test course. For example, a tiregraded 150 would wear one and one half (1 ½)times as well on the government course as atire graded 100. The relative performance oftires depends upon the actual conditions oftheir use, however, and many depart signifi-cantly from the norm due to variation in drivinghabits, maintenance practices and differencesin road characteristics and climate.
TRACTIONThe traction grades, from highest to lowest,are AA, A, B, and C, as measured under con-trolled conditions on specified governmenttest surfaces of asphalt and concrete. A tiremarked C may have poor traction perform-ance.
WARNING
The traction grade assigned to this tire is based on braking (straight-ahead) tractiontests and is not a measure of cornering(turning) traction.
TEMPERATUREThe temperature grades are A (the highest), B, and C, representing the tire's resistance to thegeneration of heat and its ability to dissipateheat when tested under controlled conditionson a specified indoor laboratory test wheel.Sustained high temperature can cause thematerial of the tire to degenerate and reducetire life, and excessive temperature can lead tosudden tire failure. The grade C correspondsto a minimum level of performance that allpassenger vehicle tires must meet under theFederal Motor Safety Standard No. 109.Grades B and A represent higher levels of per-formance on the laboratory test wheel thanthe minimum required by law.
WARNING
The temperature grade for this tire is estab- lished for a tire that is properly inflated andnot overloaded. Excessive speed, under-inflation, or excessive loading, either sepa-rately or in combination, can cause heatbuildup and tire failure.
Related information
Tires (p. 546)
Tire sidewall designations (p. 550)

INDEX
676Collision warner
crossing traffic rear 346
see City Safety 327
Collision warning from the rear 341
Color code, paintwork 652
Color codes 652
Compass 475 calibration 476
Condensation in headlights 645, 647, 648, 649
Connecting vehicle to Internet No connection or poor connection 529
via a mobile device (WiFi) 525
via cellular phone (Bluetooth) 525
via vehicle's modem 526
Connect phone 516
Contact information 28
Convertible seats 72
coolant 670 filling 610
Cooling system overheating 458
Cornering assistance 315 activating/deactivating 316
limitations 316
Corner Traction Control 281
Corrosion protection 650 Covering cargo compartment 588
Crash, see Collision 44
Crash event data 35
Cross Traffic Alert 346 activating/deactivating 347
limitations 347
messages 349
Cruise control 287 activating 288
manage speed 311
standby mode 290
turn off 289
Curb weight 665
Customer Privacy Policy 37
CZIP (Clean Zone Interior Package) 212
D
Data recording 35 transferring between vehicle and
workshop 599
Data sharing 530, 531
Daytime running lights 158
Decals location 660
Defrosting 225 Detecting obstacles City Safety 331
Dimensions 663
Dipstick, electronic 609
Direction of rotation 548Display driver information 86
Display lighting 167
Distance Alert 285 activating/deactivating 286
limitations 287
Set time interval 312
DivX ®
504
Door mirrors 174 compass 475, 476
dimming 174
outer 174
power folding 175
resetting 175
store position 190, 191
Download Center 599 use 600
Driveline transmission 426

INDEX
681
Low beams 159
Lower the rear end 585
Low oil level 609
Low-speed driving 443
activate with function button 444
M
Maintained climate comfort 238
start/stop 238
Maintenance 596 corrosion protection 650
Max. axle weight 665
Max. roof load 665
Media player 499, 500, 501 compatible file formats 507
voice control 152
Messages and symbols Adaptive Cruise Control 298
Assistance at risk of collision 369
BLIS 345
City Safety 340
Cross Traffic Alert 349
Lane Keeping Aid 361
Park Assist Camera 383
Park Assist Pilot 392
Parking Assist 374
Pilot Assist 308
stability and traction control system 284
Messages in display 109, 143 handling 110, 144
saved 111, 144
Mileage 91 electric motor 448
Misting condensation in headlights 644, 647
Mood lighting 167 adjusting 167
N
Net
cargo compartment 592
O
Occupant safety 45
Occupant weight sensor 59
Octane rating 455
Oil, see also Engine oil 669
On-board diagnostics 596
On-board Diagnostic socket 39
Option/accessory 23
Outside temperature gauge 96
Overheating 458, 465
Owner's information 18
OWNER'S MANUAL 23environmental labeling 25
in cellular phone 22
in the center display 19, 20
P
Paddle at steering wheel 205 Paint color code 652
paint damage and touch-up 651, 652
Panoramic roof 176 opening and closing 178
pinch protection 170
sun shade 180
ventilation position 179
Parallel parking 384
Park Assist Camera 375 activating 381
limitations 322
sensor field 380
Symbols and messages 383
trajectory lines 378
views 376

INDEX
685
Speed Limiter
change speed 311
Speed symbols, tires 550 Spin control 281
Stability and traction control system 281 sport mode 282, 283
Symbols and messages 284
Stains 639, 641, 642, 643
Start and lock system type designations 260
Start battery 459, 613 overload 459
Start engine 412 Starting the engine after a collision 64
Start the vehicle 412
Steel cargo grid 591
Steering assistance at risk of collision 364 Steering power level, see Steering wheel
resistance 280
Steering wheel 205, 206 heating 223
keypad 205
paddle 205
steering wheel adjustment 206
Steering wheel keypad 205
Steering wheel paddles 429 Steering wheel resistance, speed-
dependent 280
Stone chips and scratches 651, 652
Storage compartments 578 center console 579
glove compartment 583
sun visor 584
Sunroof pinch protection 170
Sun shade panoramic roof 176, 180
pinch protection 170
rear door 173
Sun visor 584 mirror lighting 166
Switching target vehicles with Adaptive Cruise Control 310
with Pilot Assist 310
Symbols dynamic 86
indicator symbols 97
warning symbols 100
Symbols and messages center display's status bar 127
hybrid-related 408
parking climate 239
system updates 600T
Tailgate locking/unlocking 250, 264
open/close with foot movement 272
power 269
unlocking from inside 266
Technician certification 40 Temperature adjusting 229, 230, 231
perceived 209
Temperature monitoring 400
Temporary Spare 565
Temporary tire sealing system 568 execution, checking 569
Inflating tires 573
Terms and conditions services 37
users 530
Tire dimensions 550 when changing wheels 560
Tires 546 direction of rotation 548
glossary of terms 549
inflation pressure table 672
mounting 564
pressure 672
removal 562