2019 VOLVO S90 TWIN ENGINE traction control

STARTING AND DRIVING
436
Settings for automatically activatingthe parking brake
Choose whether the parking brake should beactivated automatically when the vehicle isswitched off.
This selection is made in the Settings menu inthe center display.
1.Tap Settings in the Top view.
2. Tap My CarParking Brake andSuspension and select or deselect theAuto Activate Parking Brake function.

Related information
Activating and deactivating the parking brake(p. 434)
Parking brake (p. 434)
Parking on a hill
Always use the parking brake when parking on ahill.
WARNING
Always apply the parking brake when parkingon an incline. Selecting a gear or putting theautomatic transmission in P may not be suffi-cient to keep the vehicle stationary in all sit-uations.
If the vehicle is pointing uphill:
Turn the front wheels so they are pointingaway from the curb.
If the vehicle is pointing downhill:
Turn the front wheels so they are pointingtoward the curb.

Heavy load uphill
Heavy loads, such as a trailer, could cause thevehicle to roll backward when the parking brakeis released automatically on steep uphill gradi-ents. To help avoid this, pull the control upwardwhile you are driving away. Release the controlwhen the vehicle gains traction.

Related information
Activating and deactivating the parking brake(p. 434)
Parking brake malfunction
If you are unable to deactivate or activate theparking brake after several attempts, contact anauthorized Volvo workshop.
A audible warning signal will sound if the parkingbrake is applied while the vehicle is being driven.
If the vehicle must be parked before the problemis rectified, turn the wheels as when parking onan incline and put the gear selector in P.
Low battery charge level
If the battery charge level is too low, it will not bepossible to apply or release the parking brake.Connect an auxiliary battery to the vehicle if thebattery is discharged.

Replacing brake pads
Due to the design of the electric parking brake,the rear brake pads must be replaced by a work-shop. An authorized Volvo workshop is recom-mended.

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STARTING AND DRIVING
448

ECO Climate
In Pure mode, ECO climate is automatically acti-vated in the passenger compartment to helpreduce energy consumption.

NOTE
When the Pure drive mode is activated, set-tings for certain climate system and electricityconsuming functions are reduced. Some ofthese settings can be reset manually, but fullfunctionality will only be restored by leavingPure mode or adapting the Individual drivemode to full climate system functionality.
If condensation forms on the windows, tap themax defroster button, which will function normally.

AWD
Improves the vehicle's traction and handlingby increasing all-wheel drive.
This drive mode locks the vehicle in all-wheeldrive. An optimal distribution between front andrear axle torque helps provide the best possiblecontrol, stability and traction, e.g. on slipperyroads or when towing a heavy trailer or anothervehicle. The AWD drive mode is always availableregardless of the hybrid battery's charge status.
Both the combustion engine and the electricmotor are engaged to enable all-wheel drive,which results in higher fuel consumption.
In the other drive modes, the vehicle automati-cally adapts the need for all-wheel drive accord-ing to the road surface, and can activate the elec-tric motor or start the combustion engine as nee-ded.
POWER
Power mode is designed to provide sportierdriving characteristics and a faster accelera-tion response.
This drive mode maximizes the combined powerfrom the combustion engine and the electricmotor by providing power to both the front andrear wheels. Gear shifting will be faster and moredistinct and the transmission will prioritize gearswith a higher traction force. Steering response isfaster and suspension is stiffer.
Both the combustion engine and the electricmotor are engaged to enable all-wheel drive,which results in higher fuel consumption.
This drive mode is optimized for maximum per-formance and throttle response. It changes thethrottle response, gear shifting program andturbo boost system. Chassis settings and steer-ing and brake response are also optimized. ThePower drive mode is always available regardlessof the hybrid battery's charge status.

INDIVIDUAL
Customizes drive mode to personal preferen-ces.
Select one of the drive modes as a basis andadjust the settings to achieve your preferred driv-ing characteristics. These settings will be storedin your driver profile.
Individual drive mode is only available if it hasbeen activated in the center display.
Settings view3 for Individual drive mode.
1.Tap Settings in the Top view.
3The image is schematic and the details may vary depending on vehicle model or software update.

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STARTING AND DRIVING
464

WARNING
Carbon monoxide is a poisonous, colorless,and odorless gas. It is present in all exhaustgases. If you ever smell exhaust fumes insidethe vehicle, make sure the passenger com-partment is ventilated, and immediately returnthe vehicle to a trained and qualified Volvoservice technician for correction.

Demanding driving
In demanding driving conditions, such as whentowing a trailer or driving in hot weather or forprolonged periods at high altitudes, it may be a
good idea to switch to a higher-octane fuel (AKI5
91 or higher) or to switch to another brand ofgasoline in order to fully utilize the vehicle'sengine capacity and optimize traction.

Related information
Fuel (p. 461)
Emission controls (p. 464)
Emission controls
Three-way catalytic converter
Keep your engine properly tuned. Certainengine malfunctions, particularly involving theelectrical, fuel or distributor ignition systems,may cause unusually high three-way catalyticconverter temperatures. Do not continue tooperate your vehicle if you detect enginemisfire, noticeable loss of power or otherunusual operating conditions, such as engineoverheating or backfiring. A properly tunedengine will help avoid malfunctions thatcould damage the three-way catalytic con-verter.
Do not park your vehicle over combustiblematerials, such as grass or leaves, which cancome into contact with the hot exhaust sys-tem and cause such materials to ignite undercertain wind and weather conditions.
Excessive starter cranking (in excess of oneminute), or an intermittently firing or floodedengine can cause three-way catalytic con-verter or exhaust system overheating.
Remember that tampering or unauthorizedmodifications to the engine, the Engine Con-trol Module, or the vehicle may be illegal andcan cause three-way catalytic converter orexhaust system overheating. This includes:altering fuel injection settings or compo-nents, altering emission system components
or location or removing components, and/orrepeated use of leaded fuel.

NOTE
Unleaded fuel is required for vehicles withthree-way catalytic converters.

Heated oxygen sensors
The heated oxygen sensors monitor the oxygencontent of the exhaust gases. Readings are fedinto a control module that continuously monitorsengine functions and controls fuel injection. Theratio of fuel to air into the engine is continuouslyadjusted for efficient combustion to help reduceharmful emissions.

Related information
Octane rating (p. 462)
Fuel (p. 461)
5AKI (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 mediaplayer and a radio. A cellular phone can also beconnected through Bluetooth to use hands-freefunctions or play music in the vehicle. When thevehicle is connected to the Internet, it is alsopossible to use apps to play media.
Audio and media overview
The functions can be controlled using voice com-mands, the steering wheel keypad or the centerdisplay. The number of speakers and amplifiersvaries depending on the audio system installed inthe vehicle.

System updates
The audio and media system is continuouslyimproved. When the vehicle has an Internet con-nection, system updates can be downloaded foroptimal functionality; see support.volvocars.com.
Related information
Media player (p. 500)
Radio (p. 483)
Phone (p. 514)
Internet-connected vehicle* (p. 523)
Apps (p. 480)
Voice control (p. 141)
Ignition modes (p. 429)
Driver distraction (p. 39)
Handling system updates via Download Cen-ter (p. 587)
License agreement for audio and media(p. 531)
Sound settings
The sound system is precalibrated for optimalsound reproduction, but these settings can bepersonalized.
The system's volume is normally adjusted usingthe volume control below the center display orthe right-side steering wheel keypad. Thisapplies, for example, when playing music or theradio or during phone calls and active traffic mes-sages.

Optimal sound reproduction
The audio system is precalibrated for optimalsound reproduction using digital signal process-ing. This calibration takes into account speakers,amplifiers, passenger compartment acoustics, lis-tener position, etc. for each combination of vehi-cle model and audio system. There is also adynamic calibration that takes into account thevolume control setting and the vehicle's speed.

Personal settings
Different settings are available in Top view under
SettingsSound depending on the vehicle'ssound system.

WHEELS AND TIRES
542
Tires
The function of the tires is to carry loads, providetraction on road surfaces, reduce vibrations andprotect the wheels from wear.
The tires significantly influence the vehicle's driv-ing characteristics. The type, dimensions, tirepressure and speed rating have a considerableimpact on how the vehicle performs.
Your vehicle is equipped with tires according tothe vehicle's tire information placard on the B-pil-lar (the structural member at the side of the vehi-cle, at the rear of the driver's door opening).

WARNING
A damaged tire could cause the driver to losecontrol of the vehicle.
CAUTION
Some Volvo models are equipped with anUltra High Performance tire and wheel com-bination designed to provide maximum drypavement performance with consideration forhydroplaning resistance. They may be moresusceptible to road hazard damage and,depending on driving conditions, may achievea tread life of less than 30,000 km (20,000miles). Even if this vehicle is equipped withVolvo's advanced AWD or stability system,these tires are not designed for winter driving,and should be replaced with winter tires whenweather conditions dictate.
The tires have good road holding characteristicsand offer good handling on dry and wet surfaces.It should be noted however that the tires havebeen developed to give these features on snow/ice-free surfaces.
Most models are equipped with "all-season" tires,which provide a somewhat higher degree of road-holding on slippery road surfaces than tires with-out the "all-season" rating. However, for optimalroadholding on icy or snow-covered roads, Volvorecommends snow tires on all four wheels.
When replacing tires, be sure that the new tiresare the same size designation, type (radial) andpreferably from the same manufacturer, on all
four wheels. Otherwise there is a risk of alteringthe vehicle's roadholding and handling characte-ristics.

Recommended tires
On delivery, the car is equipped with Volvo origi-
nal tires that have the VOL1 marking on the sideof the tires. These tires have been designed spe-cifically for your vehicle. It is therefore importantwhen replacing tires that the new tires have thissame marking to help maintain the vehicle's driv-ing characteristics, comfort and fuel consumption.

New tires
Tires are perishable goods. After a few years,they will begin to harden and their friction proper-ties will gradually deteriorate. Always replace tireswith the freshest tires possible. This is particularlyimportant for snow tires. A series of numbers is
1This may vary for certain tire dimensions.

WHEELS AND TIRES
548
Uniform Tire Quality Grading
ALL PASSENGER VEHICLE TIRES MUSTCONFORM TO FEDERAL SAFETY REQUIRE-MENTS IN ADDITION TO THESE GRADES.
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

TREADWEAR
The treadwear grade is a comparative ratingbased on the wear rate of the tire when testedunder controlled conditions on a specified gov-ernment test course. For example, a tire graded150 would wear one and one half (1 ½) times aswell on the government course as a tire graded100. The relative performance of tires dependsupon the actual conditions of their use, however,and many depart significantly from the norm dueto variation in driving habits, maintenance practi-ces and differences in road characteristics andclimate.

TRACTION
The traction grades, from highest to lowest, areAA, A, B, and C, as measured under controlledconditions on specified government test surfacesof asphalt and concrete. A tire marked C mayhave poor traction performance.
WARNING
The traction grade assigned to this tire isbased on braking (straight-ahead) tractiontests and is not a measure of cornering (turn-ing) traction.

TEMPERATURE
The temperature grades are A (the highest), B,and C, representing the tire's resistance to thegeneration of heat and its ability to dissipate heatwhen tested under controlled conditions on aspecified indoor laboratory test wheel. Sustainedhigh temperature can cause the material of thetire to degenerate and reduce tire life, and exces-sive temperature can lead to sudden tire failure.The grade C corresponds to a minimum level ofperformance that all passenger vehicle tires mustmeet under the Federal Motor Safety StandardNo. 109. Grades B and A represent higher levelsof performance 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-infla-tion, or excessive loading, either separately orin combination, can cause heat buildup andtire failure.
Related information
Tires (p. 542)
Tire sidewall designations (p. 546)

INDEX
653
Charging
hybrid battery 409
opening and closing the charging
door 414
start charging 415
Status 417, 419
stop charging 421
Charging cable 411
Charging current 411
Checking engine oil level 598
Child restraints 63, 65
booster cushions 71
convertible seats 69
infant seats 67
ISOFIX/LATCH anchors 74
lower attachment points 73
recalls and registration 65
top tether anchors 72
Child safety 63
Child safety locks 259
Circuit breaker 413
City Safety 333, 334, 336, 337, 343, 345
City Safety braking for oncoming vehicles 342
City Safety in crossing traffic 339, 340
City Safety when evasive maneuver preven-
ted341
Cleaning621, 623, 624
automatic car wash627
car wash624, 625, 627, 628, 629, 630
center display619
Seat belts621
textile upholstery619, 621, 622
upholstery 619, 621, 622, 623, 624
wheels630
Cleaning wheels630
Cleaning wiper blades628
Clean Zone199
Clean Zone Interior Package199
Climate196
auto-regulation214
blower control219, 220
parking224
perceived temperature197
Sensors196
temperature control221, 222
voice control197
zones196
Climate controls207
center display207
rear seat207
Climate system196, 207
Refrigerant648
repairs595
Clock, setting89
Collision42, 47, 52, 61
Collision warner
detection of pedestrians337
radar sensor324
Collision warning333, 346
Color code, paintwork632
Color codes632
Compass474
calibration475
Condensation in headlights625, 627,
628, 629
Connecting vehicle to Internet
No connection or poor connection 528
via a mobile device (WiFi)525
via cellular phone (Bluetooth) 525
via vehicle's modem526
Connect phone515
Contact information26
Convertible seats69
coolant647
Coolant, filling599
Cooling system
overheating465
Corner Traction Control271
Corrosion protection630
Crash, see Collision42

INDEX
661
Safety mode 61
starting/moving 62
Sealing compound 564
Seat, see Seats 180
Seat belt reminder 51
Seat belts 47
Automatic locking retractor/Emergency
locking retractor 65
buckling/unbuckling 48
pregnancy 43
seat belt reminder 51
seat belt tensioner 50
securing child restraint systems 67, 69, 71
Seat belt tensioner 50
resetting 51
Seats
heating 209, 210
manual front seat 180
power front seats 181
rear seat 579
store position 182, 183
ventilation 211, 212
whiplash protection 46
Sensors
air quality 200
climate 196
Sensus
connection and entertainment 30
Sensus Navigation358
Service position634
Service program584
Set time interval290
settings
Categories131
contextual129
resetting130
Shiftlock443
Side airbag59
Side Impact Protection System59, 60
SIM card527
SIPS (Side Impact Protection System) 59, 60
Sirius Satellite radio
Travel link494
SiriusXM® Satellite radio
traffic information 490, 491, 493
Ski hatch582
Slippery conditions458
Slippery road conditions458
Software updates33
Sound experience479
Sound settings478, 521
phone522
playing media500, 502
text message521
Spare tire561, 562
Speed camera360
Speed Limiter275, 278, 279, 283
getting started276
shut down278
temporary deactivation277
Speed symbols, tires546
Spin control271
Stability and traction control system 271, 274
operation272, 273
Stability system271
Stains619, 621, 622, 623, 624
Start and lock system
type designations251
Start battery466, 601
overload466
Start engine426
Starting the engine
after a collision62
Start the vehicle426
Steering assistance at risk of colli-
sion 372, 373, 374, 375, 376, 377, 378,
379, 381
Steering assistance at risk of rear-end col-
lision378, 379