traction control VOLVO S90 2020 Quick Guide

YOUR VOLVO
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Volvo Structural Parts StatementVolvo is one of the leading companies for car safety.
Volvo engineers and manufactures vehicles designed to help protect vehicle occupants inthe event of a collision. Volvos are designed to absorb the impact of a collision. This energy absorption systemincluding, but not limited to, structural compo-nents such as bumper reinforcement bars,bumper energy absorbers, frames, rails, fenderaprons, A-pillars, B-pillars and body panelsmust work together to maintain cabin integrityand protect the vehicle occupants. The supplemental restraint system including but not limited to air bags, side curtain airbags, and deployment sensors work togetherwith the above components to provide propertiming for air bag deployment. Due to the above, Volvo Car USA does not support the use of aftermarket, alternative oranything other than original Volvo parts forcollision repair. Volvo Car USA also recommends using Volvo- approved replacement glass. The use of after-market glass, particularly a windshield, canhave an adverse effect on collision avoidanceand advanced lighting systems. In addition Volvo does not support the use or re-use of structural components from an exist-ing vehicle that has been previously damaged. Although these parts may appear equivalent, itis difficult to tell if the parts have been previ-ously replaced with non-OE parts or if the parthas been damaged as a result of a prior colli-sion. The quality of these used parts may alsohave been affected due to environmentalexposure.
Related information

Data recording (p. 33)
Driver distraction A driver has a responsibility to do everything possible to ensure his or her own safety andthe safety of passengers in the vehicle andothers sharing the roadway. Part of thisresponsibility is avoiding distractions, includ-ing performing activities that are not directlyrelated to controlling the vehicle in the drivingenvironment.
Your new Volvo is, or can be, equipped with feature-rich entertainment and communica-tion systems. These include hands-free cellulartelephones, navigation systems, and multipur-pose audio systems. You may also own otherportable electronic devices for your own con-venience. When used properly and safely, theyenrich the driving experience. Improperly used,any of these could cause a distraction. For all of these systems, we want to provide the following warning that reflects the strongVolvo concern for your safety. Never use thesedevices or any feature of your vehicle in a waythat distracts you from the task of drivingsafely. Distraction can lead to a serious acci-dent. In addition to this general warning, weoffer the following guidance regarding specificnew features that may be found in your vehi-cle:

DISPLAYS AND VOICE CONTROL
* Option/accessory.
112
Activating and deactivating the center display The center display can be temporarily switched off and reactivated using the homebutton under the screen.
Center display's home button.
When the home button is used, the screen will go dark and the touchscreen no longer reactsto touch. The climate bar will remain visible.All functions connected to the screen continue to operate, such as climate, audio, guiding *
and apps. The center display screen can be cleaned when the display is dimmed. The dim-ming function can also be used to darken thescreen so it is not a distraction while driving. 1. Press and hold the button beneath the
screen.
> The screen will go dark (the climate barwill remain visible). All functions con- nected to the screen continue to oper-ate.
2. To reactivate the screen, briefly press the Home button.
> The view that was displayed before thescreen was turned off will be displayed again.
NOTE
The screen cannot be turned off when a prompt to perform an action is being dis-played on the screen.
NOTE
The center display is turned off automati- cally when the engine is off and the driver'sdoor is opened.
Related information
Cleaning the center display (p. 591)
Changing the appearance of the center display (p. 128)
Center display overview (p. 107)
Navigating in the center display's views
There are five different basic views in the cen- ter display: Home view, Top view, Climateview, App view and Function view. Thescreen is automatically activated when thedriver's door is opened.
Home viewHome view is the view displayed when the screen is activated. It consists of four tiles:
Navigation, Media, Phone and a fourth tile.
An app or vehicle function selected from the App or Function views will start in the respec- tive tile in Home view.
FM radio, for example,
will start in the Media tile.
The extra tile displays the most recently used app or vehicle function that is not related tothe other three tiles. The tiles display brief information about the respective apps.
NOTE
When the vehicle is started, information on the current status of apps will be displayedin the respective tile in Home view.

DRIVER SUPPORT
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* Option/accessory.267
WARNING
If the temperature rises too high, the power steering may be forced to switch off com-pletely. In such a situation, the driver dis- play shows the message
Power steering
failure Stop safely along with a symbol.
Changing the level of steering wheel resistance *
In INDIVIDUAL drive mode, the level of steer- ing wheel resistance can be adjusted. 1.
Tap
Settings in the center display's Top
view.
2. Select
My CarDrive ModesSteering Force.
Steering wheel resistance settings can only be accessed if the vehicle is stationary or is mov-ing straight ahead at a low speed.
Related information
Driver support systems (p. 266)
Drive modes
* (p. 399)
Electronic Stability Control
The Electronic Stability Control (ESC 1
) func-
tion helps the driver avoid skidding and improves the vehicle's directional stability.
This symbol will be displayed in the instrument panel whenthe system is intervening. When the system has inter- vened to apply the brakes, apulsing sound may be heard
and the vehicle may accelerate more slowlythan expected when the accelerator pedal isdepressed.
The system consists of the following sub-func- tions:
Stability control 2
Spin control and active yaw control
Engine drag control
WARNING
The function is supplementary driver support intended to facilitate drivingand help make it safer – it cannot han-dle all situations in all traffic, weatherand road conditions.
The driver is advised to read all sec-tions in the Owner's Manual about thisfunction to learn of its limitations,which the driver must be aware ofbefore using the function.
Driver support functions are not a sub-stitute for the driver's attention andjudgment. The driver is always respon-sible for ensuring the vehicle is drivenin a safe manner, at the appropriatespeed, with an appropriate distance toother vehicles, and in accordance withcurrent traffic rules and regulations.
Stability control 2This function helps control the driving andbraking force of each individual wheel in anattempt to stabilize the vehicle.
Spin control and active yaw controlThis function is active at low speeds andbrakes the wheels that are spinning to transfer
1
Electronic Stability Control
2 Also called traction control.

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DRIVER SUPPORT
268additional power from wheels that are not spinning. This function can also help prevent the wheels from spinning while the vehicle is accelerating.
Engine drag control
Engine drag control (EDC
3
) can help prevent
inadvertent wheel lock, e.g. after downshiftingor using engine braking when driving at lowspeeds on a slippery surface. Inadvertent wheel lock while driving could impair the driver's ability to steer the vehicle.
Related information
Driver support systems (p. 266)
Activating or deactivating Sport mode forElectronic Stability Control (p. 268)
Electronic Stability Control symbols andmessages (p. 270)
Electronic Stability Control in sport mode The stability system (ESC 4
) is always acti-
vated and cannot be switched off. However, the driver can select
ESC Sport Mode,
which offers more active driving characteris- tics.
With the ESC Sport Mode sub-function
selected, intervention from the system is reduced and more lateral movement is permit-ted, giving the driver more control of the vehi-cle than usual. When
ESC Sport Mode is selected, the func-
tion may seem to be disabled even though it continues to assist the driver.
ESC Sport Mode also helps provide more
traction, even if the vehicle gets stuck or is driving on a loose surface such as deep snowor loose sand.
Related information
Electronic Stability Control (p. 267)
Activating or deactivating Sport mode forElectronic Stability Control (p. 268)
Activating or deactivating Sport mode for Electronic StabilityControl
The stability system (ESC 5
) is always acti-
vated and cannot be switched off. However, the driver can select Sport mode, whichoffers more active driving characteristics.
Activate or deactivate the function using this button inthe center display's Functionview.
GREEN button indicator light – the func- tion is activated.
GRAY button indicator light – the functionis deactivated.
When
ESC Sport Mode is acti-
vated, this symbol will illuminate with a steady glow in the instrumentpanel. It will remain on until the
driver deactivates the function or until theengine is turned off. The system will return tonormal mode the next time the engine isstarted.
3 Engine Drag Control
4 Electronic Stability Control
5 Electronic Stability Control

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DRIVER SUPPORT
* Option/accessory.
276
Automatic standby modeAdaptive Cruise Control may go into standby mode if:
the wheels lose traction
the engine speed (rpm) is too low/high
the temperature in the brake systembecomes too high
the vehicle's speed goes below 30 km/h(20 mph).
The driver must then control the vehicle'sspeed.
Related information
Cruise control (p. 273)
Selecting and activating cruise control(p. 274)
Deactivating cruise control (p. 275)
Adaptive Cruise Control
*15
Adaptive Cruise Control (ACC 16
) helps the
driver maintain a constant speed with a set time interval to the vehicle ahead.
Adaptive Cruise Control can help provide a more relaxed driving experience on long tripson highways or long, straight roads with eventraffic flows.
The camera/radar sensor measures the distance to the vehicle ahead.
The driver sets a speed and a time interval to the vehicle ahead. If the camera/radar sensordetects a slower-moving vehicle ahead, yourvehicle's speed will be automatically adaptedaccording to the set time interval to that vehi-cle. When there are no longer slower-moving vehicles ahead, the vehicle will return to theset speed. If the Curve Speed Assist (CSA)
* function is
activated, it may also affect the vehicle's speed.
WARNING
The function is supplementary driver support intended to facilitate drivingand help make it safer – it cannot han-dle all situations in all traffic, weatherand road conditions.
The driver is advised to read all sec-tions in the Owner's Manual about thisfunction to learn of its limitations,which the driver must be aware ofbefore using the function.
Driver support functions are not a sub-stitute for the driver's attention andjudgment. The driver is always respon-sible for ensuring the vehicle is drivenin a safe manner, at the appropriatespeed, with an appropriate distance toother vehicles, and in accordance withcurrent traffic rules and regulations.
Adaptive Cruise Control regulates speed byaccelerating and braking. It is normal for the
15 Depending on market, this function can be either standard or optional.
16 Adaptive Cruise Control

DRIVER SUPPORT
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* Option/accessory.281
WARNING
With automatic standby mode, the driver is warned by an acoustic signal and a mes-sage on the instrument panel.
The driver must then regulate vehicle speed, apply the brakes if necessary,and maintain a safe distance to othervehicles.
Adaptive Cruise Control may go into standbymode if: your vehicle's speed goes below 5 km/h(3 mph) and ACC cannot determine if thevehicle ahead is stationary or if it isanother object, e.g. a speed bump.
your vehicle's speed goes under 5 km/h(3 mph) and the vehicle ahead turns sothat ACC no longer has a vehicle to follow.
the driver opens the door.
the driver unbuckles the seat belt.
the engine speed (rpm) is too low/high.
one or more of the wheels lose traction.
the brake temperature is high.
the parking brake is applied.
the camera/radar sensor is covered bysnow or heavy rain (the camera lens/radarwaves are blocked).
Related information

Adaptive Cruise Control
* (p. 276)
Selecting and activating Adaptive Cruise Control
* (p. 278)
Deactivating Adaptive Cruise Control
*
(p. 279)
Adaptive Cruise Control
* limitations
(p. 281)Adaptive Cruise Control *26
limitations
Adaptive Cruise Control (ACC 27
) may have
limited functionality in certain situations.
Steep roads and/or heavy loadsAdaptive Cruise Control is primarily intended to be driven on flat roads. The function maynot be able to maintain the correct time inter-val to the vehicle ahead when driving downsteep hills. The driver should be extra attentiveand prepared to apply the brakes.
Other limitationsThe Off Road drive mode cannot be selected
if Adaptive Cruise Control is activated.
26 Depending on market, this function can be either standard or optional.
27 Adaptive Cruise Control

DRIVER SUPPORT
* Option/accessory.
290
Pilot Assist *38
standby mode
Pilot Assist can be deactivated and put in standby mode. This may happen automati-cally or be due to driver intervention.
Standby mode means that the function is selected in the instrument panel but not acti-vated. In standby mode, Pilot Assist will notregulate the speed or distance to the vehicleahead or provide steering assistance.
Standby mode due to action by the
driver
Pilot Assist will be deactivated and put instandby mode if any of the following occurs:
The brakes are applied.
The gear selector is moved to
N.
A turn signal is used for more than1 minute.
The vehicle is driven faster than the setspeed for more than 1 minute.
Automatic standby modePilot Assist is dependent on other systems, such as Electronic Stability Control (ESC 39
). If
any of these other systems stops working, Pilot Assist will be automatically deactivated.
WARNING
With automatic standby mode, the driver is warned by an acoustic signal and a mes-sage on the instrument panel.
The driver must then regulate vehicle speed, apply the brakes if necessary,and maintain a safe distance to othervehicles.
Adaptive Cruise Control may go into standbymode if, e.g.: the driver opens the door.
the brake temperature is high.
the driver's hands are not on the steering wheel.
the parking brake is applied.
the engine speed (rpm) is too low/high.
the driver unbuckles the seat belt.
one or more of the wheels lose traction.
the camera/radar sensor is covered by snow or heavy rain (the camera lens/radarwaves are blocked).
your vehicle's speed goes under 5 km/h(3 mph) and Pilot Assist cannot determineif the vehicle ahead is stationary or if it isanother object, e.g. a speed bump.
your vehicle's speed goes under 5 km/h(3 mph) and the vehicle ahead turns sothat Pilot Assist no longer has a vehicle tofollow.
Related information

Pilot Assist
* (p. 285)
Selecting and activating Pilot Assist
*
(p. 288)
Deactivating Pilot Assist
* (p. 289)
Pilot Assist
* limitations (p. 291)
38
Depending on market, this function can be either standard or optional.
39 Electronic Stability Control

STARTING AND DRIVING
388
Parking on a hillAlways use the parking brake when parking on a hill.
WARNING
Always apply the parking brake when park- ing on an incline. Selecting a gear or put-ting the automatic transmission in P may
not be sufficient to keep the vehicle sta-tionary in all situations.
If the vehicle is pointing uphill:
Turn the front wheels so they are pointing away 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 the vehicle to roll backward when the parkingbrake is released automatically on steep uphillgradients. To help avoid this, pull the controlupward while you are driving away. Releasethe control when the vehicle gains traction.
Related information
Activating and deactivating the parkingbrake (p. 386)
Parking brake malfunction
If you are unable to deactivate or activate the parking brake after several attempts, contactan authorized Volvo workshop.
A audible warning signal will sound if the park- ing brake is activated while the vehicle isbeing driven. If the vehicle must be parked before the prob- lem is rectified, turn the wheels as when park-ing on an incline and put the gear selector inP .
Low battery charge levelIf the battery charge level is too low, it will notbe possible to activate or deactivate the park-ing brake. Connect an auxiliary battery to thevehicle if the battery is discharged.
Replacing brake padsDue to the design of the electric parkingbrake, the rear brake pads must be replacedby a workshop. An authorized Volvo workshopis recommended.
Symbols in the instrument panel
Symbol Meaning
A
B A flashing symbol indicates that a fault has been detected. Seethe message in the instrumentpanel.
A
BFault in the brake system. See the message in the instrumentpanel.
Information message in the instrument panel.
A
Canadian models.
B US models.

STARTING AND DRIVING
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* Option/accessory.399
All Wheel Drive (AWD) *
All-wheel drive (AWD 8
), also called four-
wheel drive, means that power is distributed to all four wheels, which improves traction.
To achieve the best traction, power is auto- matically directed to the wheels that have thebest grip. The system continuously calculatesthe need for torque to the rear wheels, andcan immediately redistribute up to half of theengine's torque to the rear wheels. All-wheel drive also has a stabilizing effect at higher speeds. In normal driving conditions,most of the engine's power is directed to thefront wheels. When the vehicle is stationary,all-wheel drive is always activated in prepara-tion for maximum traction during acceleration. All-wheel drive reacts differently depending on which drive mode is selected.
Related information
Drive modes
* (p. 399)
Transmission (p. 391)
Drive modes
*
Drive modes affect the vehicle's driving cha- racteristics in different ways to enhance andsimplify the driving experience in certaintypes of situations.
Drive modes enable easy access to the vehi- cle's many functions and settings in differentdriving situations. The following systems areadapted to help optimize driving characteris-tics in each drive mode: Steering
Engine/transmission/all-wheel drive
*
Brakes
Shock absorbers
Instrument panel
Start/Stop function
Climate control settings
Select the drive mode that is adapted to the current driving conditions. Keep in mind thatnot all drive modes are available in all situa-tions.
Available drive modesWhen the engine is started, the vehicle will be in Comfort mode and the start/stop function
will be activated. Drive mode can be changed once the vehicle is started, e.g. to
Individual
mode. Once Individual mode is selected, you
can adjust settings to personal preferences, e.g. to show the tachometer.
Comfort
Comfort is the vehicle's default mode. This
setting offers driving comfort, light steering and soft suspension. In
Comfort mode, no tachometer will be dis-
played in the instrument panel 9
.
Eco
Adapt the vehicle for more fuel-efficient and eco-friendly driving with Eco mode.
In this mode, the Start/Stop function is acti- vated and certain climate settings arereduced. When driving in
Eco mode, an ECO gauge
indicating how economical the driving is will be displayed in the instrument panel.
8 All Wheel Drive
9 Only applies to vehicles with 8-inch instrument panels.

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STARTING AND DRIVING
* Option/accessory.
400
Dynamic
Dynamic mode is designed to help pro-
vide sportier driving characteristics and a faster acceleration response.
Gear shifting will be faster and more distinctand the transmission will prioritize gears witha higher traction force. Steering response is faster and suspension is stiffer 10
to help reduce body roll when corner-
ing. The Start/Stop function is deactivated.
Dynamic mode is also available in a Polestar
Engineered* version.
Individual
Customizes drive mode to personal prefer- ences.
Select one of the drive modes as a basis andadjust the settings to achieve your preferreddriving characteristics. These settings will bestored in the active driver profile and will beavailable every time the vehicle is unlockedwith that remote key. Individual drive mode is only available if it has been activated in the center display.
Settings view 11
for Individual drive mode.
1. Tap Settings in the Top view.
2. Tap
My CarIndividual Drive Modeand select Individual Drive Mode. 3.
Under
Presets, select one of the following
drive modes as a basis: Eco, Comfort,Dynamic or Polestar Engineered* .
The following settings can be modified:

Driver Display
Steering Force
Powertrain Characteristics
Brake Characteristics
Suspension Control
ECO Climate
Start/Stop.
Related information
Changing drive mode
* (p. 401)
Eco drive mode (p. 401)
Economical driving (p. 411)
Start/Stop function (p. 404)
All Wheel Drive (AWD)
* (p. 399)
Driver profiles (p. 133)
10
Vehicles with Four-C.
11 The illustration is generic - details may vary according to vehicle model.