2020 VOLVO S90 brake

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.

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STARTING AND DRIVING
* Option/accessory.
402 This function is most effective in driving situa- tions where the vehicle can roll freely for along distance, e.g. on roads with slight down-grades or when a decrease in speed is antici-pated, such as when approaching an area witha lower speed limit.
Activating Eco Coast
The function is activated when the accelerator pedal is fully released and the following condi-tions are met:
Eco drive mode is activated.
The gear selector is in
D.
The vehicle's speed is approximately 65-140 km/h (40-87 mph).
The gradient of the downgrade is less thanapproximately 6%.
COASTING will be displayed in the instrument
panel when Eco Coast is being used.
Limitations
Eco Coast is not available if
the engine and/or transmission are not at normal working temperatures
the gear selector is moved from
D to man-
ual shifting mode
the vehicle's speed is not within the65-140 km/h (40-87 mph) range
the gradient of the downgrade is morethan approximately 6%
The steering wheel paddles
* are being
used for manual shifting.
Deactivating and turning off Eco Coast
In certain situations, it may be advisable to deactivate or turn off Eco Coast so that enginebraking can be used. These situations mightinclude driving down steep hills or beforepassing another vehicle to help ensure thiscan be done as safely as possible. Deactivate Eco Coast by
pressing the accelerator or brake pedal
moving the gear selector to manual mode
Using the steering wheel paddles
* to shift.
Turn off Eco Coast by
switching to another drive mode
*
deactivating
Eco drive mode in Function
view.
It is possible to roll short distances even with- out Eco Coast in order to help conserve fuel.However, for the best fuel economy, EcoCoast should be activated and used to rolllonger distances.
Cruise control Eco CruiseWhen cruise control is activated in the Ecodrive mode, the vehicle's acceleration and deceleration will be slower than in other drivemodes to help further conserve fuel. Becauseof this, the vehicle's actual speed may beslightly above or below the set speed.
On a level road, the vehicle's actual speedmay differ from the set speed when cruisecontrol is active and the vehicle is coast-ing.
On a steep uphill gradient, the vehicle'sspeed is reduced until the transmissiondownshifts. Reduced acceleration is theninitiated in order to reach the set speed.
On a downhill gradient in which the vehi-cle is coasting, the vehicle's actual speedmay be slightly above or below the setspeed. The function uses engine brakingto keep the set speed. If necessary, thenormal brakes are also applied.

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Stop the vehicle by applying the brakes and keep the brake pedal depressed. Theengine will auto-stop.
In
Comfort or Eco drive mode, the engine
may auto-stop before the vehicle has com- pletely stopped. With Adaptive Cruise Control or Pilot Assist activated, the engine will auto-stop aboutthree seconds after the vehicle has stopped.
Auto-startThe following conditions must be met for theengine to auto-start.
Release the brake pedal. The engine willauto-start and the vehicle can be driven.On an uphill gradient, Hill Start Assist (HSA 12
) will activate to help prevent the
vehicle from rolling backward.
When the Auto-hold function is activated, auto-start will be delayed until the acceler-ator is pressed.
When Adaptive Cruise Control or PilotAssist are activated, the engine will auto- start when the accelerator pedal is depressed or the
button on the left-
side steering wheel keypad is pressed.
Maintain pressure on the brake pedal and press the accelerator pedal. The enginewill auto-start.
On a downhill gradient: Release the brakepedal slightly so that the vehicle begins toroll. The engine will auto-start after a slightincrease in speed.
Symbols in the instrument panel
The symbol will be displayed in
the tachometer when the function is avail- able.
An indicator in the tachometer will point toward
when Start/Stop is active
and the engine has auto-stopped.
The
symbol will be grayed-out
when the function is not available.
No symbol will be shown when the func- tion is turned off.
The function is active and the engine has auto-stop- ped.
On vehicles with the 8-inch instrument panel, the symbol will be shown at the bottom of thespeedometer.
Related information
Deactivating the Start/Stop function(p. 406)
Conditions for the Start/Stop function(p. 406)
Start/Stop function (p. 404)
Hill Start Assist (p. 390)
Auto-hold brakes (p. 389)
12
Hill Start Assist

STARTING AND DRIVING
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The engine auto-starts while the brake pedal is depressed
In the following situations, the engine will auto-start even if the brake pedal isdepressed: High levels of condensation on the insideof the windows.
The climate system settings and theactual climate in the passenger compart-ment differ.
The brake pedal is pumped repeatedly.
The hood is open.
The vehicle begins to roll or increasesspeed slightly if the engine auto-stoppedbefore the vehicle was at a standstill.
The driver's seat belt is unbuckled with thegear selector in the
D or N positions.
The gear selector is moved from
D to R or
M (± ).
The driver's door is opened with the gearselector in
D. An audible signal and a text
message informs the driver that the igni-tion is on.
WARNING
Do not open the hood if the engine has auto-stopped. Turn off the engine byswitching off the ignition before lifting thehood.
Related information
Start/Stop function (p. 404)
Driving with the Start/Stop function (p. 404)
Deactivating the Start/Stop function(p. 406)

STARTING AND DRIVING
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* Option/accessory.411
Leveling control settings *
Turn off leveling control before lifting the vehicle with a jack to help avoid problemswith the pneumatic suspension.
Center display settings
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. 408)
Loading recommendations (p. 538)
Economical driving
Drive economically and more environmentally conscious by thinking ahead and avoidingrapid starts and stops.
Adapt your driving style and speed to the cur- rent traffic conditions. Observe the following rules:
For lower fuel consumption, activate
Ecodrive mode.
Use the Eco Coast function in drive mode
Eco - engine braking is deactivated, allow-
ing the vehicle's kinetic energy to be used to roll greater distances.
Use gear
D as often as possible and avoid
using the kick-down function.
For manual gear shifting, use the highestpossible gear for the current traffic situa-tion and road conditions - fuel consump-tion is reduced at lower engine speeds (rpm). Use the gear indicator 13
.
Maintain a steady speed and a generous following distance to traffic ahead to mini-mize braking.
Fuel consumption is increased at highspeeds - air resistance increases withspeed.
The trip computer's current fuel consump-tion indicator can help promote more fuel-efficient driving.
Do not warm up the engine by idling. It isbetter to begin driving normally immedi-ately after starting the engine. A coldengine uses more fuel than a warmengine.
Whenever possible, avoid using the vehi-cle to drive short distances. The enginedoes not have time to reach a normaloperating temperature and this leads toincreased fuel consumption.
Use engine braking to brake the vehicle,when this is safe for other road users.
Maintain the correct pressure in the tiresand check pressure regularly.
The type of tires used could affect fuelconsumption - consult a retailer for adviceon suitable tires.
Remove unnecessary items from the vehi-cle - the heavier the load, the higher thefuel consumption.
Roof loads increase air resistance andincrease fuel consumption. Remove roofboxes, ski racks, etc. that are not in use.
Avoid driving with the windows open.
13
Only available in certain markets.

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* Option/accessory.
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WARNING
Never turn off the engine while the vehicle is moving, e.g. when driving downhill. Thisdeactivates certain important systemssuch as power steering and brakes.
Other factors that decrease fuel consumption
Dirty air cleaner.
Dirty engine oil and clogged oil filter.
Incorrect front-end alignment.
Incorrect wheel alignment.
Some of the above items and others are checked as part of Volvo's standard mainte-nance schedule.
Related information
Drive-E
‒ purer driving pleasure (p. 28)
Eco drive mode (p. 401)
Checking tire pressure (p. 507)
Preparing for a long trip
It is important to have the vehicle's systems and equipment checked carefully before driv-ing long distances.
Check that
the engine is running properly and that fuel consumption is normal
there are no leaks (fuel, oil or other fluid)
the brake pedal is functioning properly
all lights are working
‒ adjust the head-
light height if the vehicle is carrying aheavy load
tire tread depth and air pressure are atcorrect levels. Change to snow tires whendriving in areas where there is a risk ofsnowy or icy roads
the start battery is sufficiently charged
the wiper blades are in good condition
Related information
Checking tire pressure (p. 507)
Filling washer fluid (p. 607)
Winter driving (p. 412)
Economical driving (p. 411)
Vehicle modem settings (p. 483)
Loading recommendations (p. 538)
Pilot Assist
* (p. 285)
Tire sealing system (p. 523)
Winter driving
It is important to check the vehicle before driving in cold/snowy conditions to makesure it can be driven safely.
Before the cold season arrives: Make sure the engine coolant contains 50% antifreeze. This mixture helps pro-tect the engine from frost erosion down toapprox. –35 °C (–31 °F). Do not mix dif-ferent types of antifreeze as this couldpose a health risk.
Keep the fuel tank well filled to preventcondensation from forming.
Check the viscosity of the engine oil. Oilwith low viscosity (thinner oil) improvescold-weather starting and reduces fuelconsumption when driving with a coldengine.
CAUTION
Low-viscosity oil should not be used with hard driving or in hot weather.
Check the condition and charge level of the start battery. Cold weather placesgreater demands on the start battery andreduces its capacity.
Use washer fluid containing antifreeze tohelp prevent ice from forming in thewasher fluid reservoir.

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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. 521)
Snow chains (p. 522)
Braking on salted roads (p. 385)
Braking on wet roads (p. 384)
Filling washer fluid (p. 607)
Start battery (p. 567)
Replacing windshield wiper blades(p. 605)
Refilling coolant (p. 556)
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.
The vehicle can be driven through water up to a depth of 25 cm (9 in) at no more than walk-ing speed. Be particularly careful when drivingthrough flowing water. When driving through standing water, drive slowly and do not stop the vehicle. When youhave passed the water, press lightly on thebrake pedal and check that the brakes arefunctioning properly. Water, mud, slush, etc.can make the brake linings slippery, resultingin delayed braking effect. If the vehicle is equipped with contacts for an electric heater or trailer coupling, cleanthese after driving in water or mud.
Do not allow the vehicle to stand in waterup to the sills any longer than absolutelynecessary. This could result in electricalmalfunctions.
CAUTION
Engine damage could occur if water enters the air cleaner.
If water enters the transmission, thelubricating ability of the oils is reducedand the service life of these systems isshortened.
Damage to any component, engine,transmission, turbocharger, differentialor its internal components caused byflooding, vapor lock or insufficient oil isnot covered under warranty.
If the engine stalls while the vehicle isin water, do not attempt to restart it.Have the vehicle towed out of thewater to a workshop. An authorizedVolvo workshop is recommended. Riskof engine failure.
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.
Related information
Recovery (p. 425)