2018 VOLVO S90 engine

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* Option/accessory.
410 In shift mode
M, the paddles are automatically
activated.
Instrument panel when the paddles are activated for shifting in manual mode.
ChangeTo shift one gear:
–Pull one of the paddles toward the steering wheel and then release.
" -": Shift down one gear.
" + ": Shift up one gear.
As long as the engine speed (rpm) is within the permissible range for the selected gear, a gear shift will take place each time a paddle is pulled. After each gear shift, a number indicating the current gear will be displayed in the instrumentpanel.
Turning off Start/Stop
Manual deactivation in gear position D
–Deactivate the paddles by pulling the right paddle (+) toward the steering wheel and
holding it until the number of the current gear is no longer displayed in the instrumentpanel.
Automatic deactivation
In gear position D, the steering wheel paddles
are deactivated after a short period of time if they are not used. The number of the current gear willno longer be displayed in the instrument panel. Ifengine braking is currently being used, the pad-dles will remain active until engine braking stops. In gear position M, the paddles will not activate
automatically.
Related information
• Gear selector positions for automatic trans- missions (p. 408)
• Gear indicator
* (p. 412)

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411
Shiftlock The automatic transmission's shiftlock function helps prevent inadvertently moving the gearselector between different positions.
There are two types of shiftlocks: mechanical and automatic.
Mechanical shiftlock
The gear selector can be moved back and forth between N and D. The other positions have a
shiftlock that is operated using the lock button on the gear selector. Press and hold the shiftlock button and move the gear selector forward or backward between P, R ,
N and D.
Automatic shiftlockThe automatic shiftlock has a separate safety system.
From Park - P
To move the gear selector from the P position,
the brake pedal must be depressed and the igni- tion in mode II.
From Neutral - N
If the gear selector is in N and the vehicle has
been stationary for at least 3 seconds (with or without the engine running), the gear selector willbe locked in that position. To move the gear selector from N to another
gear, the brake pedal must be depressed and the ignition in mode II.
Related information
• Gear selector positions for automatic trans- missions (p. 408)
• Deactivating the automatic shiftlock (p. 411)
Deactivating the automatic shiftlock
The automatic shiftlock can still be disengaged even when there is no electrical current to thevehicle.
Deactivating the automatic shiftlock
If the vehicle cannot be driven (e.g. due to a dis- charged battery), the gear selector must be moved to the N position so that the vehicle can
be moved.
Lift the rubber mat in the storage compart- ment in front of the gear selector. Locate thehole with a spring-loaded button in the bot-tom of the compartment.
Press a small screwdriver or similar object into the hole and hold it down.
Move the gear selector to N and release the
button.
4. Replace the rubber mat.

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412
Related information
• Shiftlock (p. 411)
• Gear selector positions for automatic trans- missions (p. 408)
The kickdown function
Kickdown is used when maximum acceleration is needed, e.g. when passing.
When the accelerator pedal is depressed all the way to the floor (past the normal full acceleratorposition), the transmission will automaticallyengage kickdown, i.e. immediately shift down to alower gear. If the accelerator pedal is released from the kick- down position, the transmission will automaticallyshift up again.
Safety function
The transmission control module is equipped with a downshift protection feature to help prevent theengine from overheating. In some conditions, the transmission will prevent downshifting/kickdown if this would lead to suchhigh engine speed (rpm) that the engine couldbe damaged. If the driver still attempts downshift-ing or kickdown at a high rpm, nothing will hap-pen and the original gear will remain selected. With kickdown, the vehicle can downshift one or more steps at a time depending on the enginespeed. The vehicle upshifts when the engine rea-ches its maximum rpm to prevent engine dam-age.
Related information
• Gear selector positions for automatic trans-missions (p. 408)
Gear indicator
*
The gear indicator in the instrument panel shows the gear currently being used for manual shiftingand indicates when another gear should beselected to optimize fuel economy.
For eco-friendly driving when manually shifting, it is important to use the correct gear and to shiftgears in good time. The gear indicator in the instrument panel shows the gear currently being used and indicates withan upward-facing arrow if a higher gear shouldbe selected.
Gear indicator in 12" instrument panel *.

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* Option/accessory.413
Gear indicator in 8" instrument panel.
Related information
•Gear selector positions for automatic trans- missions (p. 408)
All Wheel Drive (AWD)
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All-wheel drive, All Wheel Drive (AWD), also called four-wheel drive, means that power is dis-tributed to all four wheels, which improves trac-tion.
To achieve the best traction, power is automati- cally directed to the wheels that have the bestgrip. The system continuously calculates theneed for torque to the rear wheels, and canimmediately redistribute up to half of the engine'storque to the rear wheels. All-wheel drive also has a stabilizing effect at higher speeds. In normal driving conditions, mostof the engine's power is directed to the frontwheels. When the vehicle is stationary, all-wheeldrive is always activated in preparation for maxi-mum traction during acceleration. All-wheel drive reacts differently depending on which drive mode * is selected.
Related information
• Drive modes
* (p. 413)
• Transmission (p. 407)
Drive modes
*
Drive modes affect the vehicle's driving charac- teristics in different ways to enhance and sim-plify the driving experience in certain types of sit-uations.
Drive modes enable easy access to the vehicle's many functions and settings in different drivingsituations. The following systems are adapted tohelp optimize driving characteristics in each drivemode: • Steering
• Engine/transmission/all-wheel drive
*
• Brakes
• Shock absorbers
• Instrument panel
• Start/Stop function
• Climate control settings
Select the drive mode that is best suited to the current driving conditions. Keep in mind that notall drive modes are available in all situations.
Available drive modes
COMFORT
• This is the vehicle's default mode.
When the engine is started, the vehicle will be in Comfort mode and the Start/Stop function will beactivated. This setting offers driving comfort, lightsteering and soft suspension.

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* Option/accessory.415
Changing drive mode *
The drive mode is changed using the control in the tunnel console.
Select the drive mode that is best suited to the current driving conditions. Keep in mind that notall drive modes are available in all situations. To change drive mode:
1. Press the DRIVE MODE control.
> A pop-up menu will appear in the center display.
2. Roll the wheel upward or downward to the desired drive mode.
3. Press the drive mode control or tap its button in the center display to confirm the selection.
> The selected drive mode is shown in theinstrument panel. If a drive mode is grayed out in the pop-up menu, it cannot be selected.
Related information
•
Drive modes
* (p. 413)
• Activating and deactivating ECO drive modeusing the function button (p. 417)
ECO drive mode
The Eco drive mode optimizes the vehicle's driv- ing characteristics for more fuel-efficient andeco-friendly driving.
Use this mode to save fuel and promote eco- friendly driving. When ECO mode is activated, the following cha- racteristics are modified:
• The automatic transmission's shifting points.
• Engine control and accelerator pedalresponse.
• Eco Coast functionality is activated andengine braking is disabled when the acceler-ator pedal is released at speeds between65 and 140 km/h (40 and 87 mph).
• Some of the climate system settings will bereduced or switched off.
• Information will be shown in the ECO gaugein the instrument panel to help promotemore eco-friendly and economical driving.
Coast function Eco CoastEco Coast essentially deactivates engine braking,allowing the vehicle's kinetic energy to be used to roll greater distances. When the driver releases the accelerator pedal, the transmission is auto- matically disengaged from the engine. Enginespeed is reduced to idling speed to reduce fuelconsumption.

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STARTING AND DRIVING
* Option/accessory.
416 This function is most effective in driving situa- tions where the vehicle can roll freely for a longdistance, e.g. on roads with slight downgrades orwhen a decrease in speed is anticipated, such aswhen approaching an area with a lower speedlimit.
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 approximately65-140 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 manual
shifting mode.
• The vehicle's speed is not within the65-140 km/h (40-87 mph) range.
• The gradient of the downgrade is more thanapproximately 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 deac- tivate or turn off Eco Coast so that engine brak-ing can be used. These situations might includedriving down steep hills or before passinganother vehicle to help ensure this can be doneas 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 drive mode
* or switching off drive
mode Eco in Function view.
It is possible to roll short distances even without Eco Coast in order to help conserve fuel. How-ever, for the best fuel economy, Eco Coast shouldbe activated and used to roll longer distances.
Cruise control Eco CruiseWhen cruise control is activated in the Eco drivemode, the vehicle's acceleration and decelerationwill be slower than in other drive modes to helpfurther conserve fuel. Because of this, the vehi-cle's actual speed may be slightly above or belowthe set speed. •
On a level road, the vehicle's actual speedmay differ from the set speed when cruisecontrol is active and the vehicle is coasting.
• On a steep uphill gradient, the vehicle'sspeed is reduced until the transmissiondownshifts. Reduced acceleration is then ini-tiated in order to reach the set speed.
• On a downhill gradient in which the vehicle iscoasting, the vehicle's actual speed may beslightly above or below the set speed. Thefunction uses engine braking to keep the setspeed. If necessary, the normal brakes arealso applied.
ECO gauge in the instrument panelThe ECO gauge indicates how economical cur-rent driving is:
• A low reading in the green area of the gaugeindicates economical driving.
• A high reading is shown when driving is noteconomical, e.g. heavy braking or rapid accel-eration.
The ECO gauge also has an indicator showinghow a reference driver would drive in the samedriving situation. This is shown by the shortpointer in the gauge.

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Eco gauge in 12" instrument panel *.
Eco gauge in 8" instrument panel.
ECO ClimateIn Eco mode, ECO climate is automatically acti- vated in the passenger compartment to helpreduce energy consumption.
NOTE
When the ECO function is activated, settings for certain climate system and electricity con-suming functions are reduced. Some of thesesettings can be reset manually, but full func-tionality will only be restored by switching off the ECO function or adapting the
Individual*
drive mode to full climate system functionality.
If condensation forms on the windows, tap the max defroster button, which will function normally.
Related information
• Changing drive mode
* (p. 415)
• Activating and deactivating ECO drive modeusing the function button (p. 417)
• Drive modes
* (p. 413)
• Economical driving (p. 424)
• Start/Stop function (p. 418)
Activating and deactivating ECOdrive mode using the functionbutton
Vehicles equipped with drive mode controls in the tunnel console have a function button forEco drive mode in the center display's Functionview.
When the engine is switched off, ECO mode is deactivated and must therefore be reactivated each time the engine is started. ECO will be dis-
played in the instrument panel when the function is activated.
Selecting Eco drive mode in the center
display's Function view
–Tap the Driving Mode ECO button to acti-
vate or deactivate the function.
> An indicator light in the button will illumi- nate when the function is activated.
Related information
• ECO drive mode (p. 415)
• Changing drive mode
* (p. 415)
• Drive modes
* (p. 413)

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* Option/accessory.
418
Start/Stop function
Start/Stop is a function that temporarily switches off the engine when the vehicle has stopped,e.g. at a traffic light or in heavy traffic, and thenstarts it again automatically when the brakepedal is released.
The Start/Stop function reduces fuel consump- tion, which helps to reduce exhaust emissions. The system makes it possible to drive more eco- nomically and climate-smart by letting the engineauto-stop when appropriate.
Related information
• Driving with the Start/Stop function (p. 418)
• Conditions for the Start/Stop function(p. 420)
• Drive modes
* (p. 413)
Driving with the Start/Stop function
Start/Stop is a function that temporarily turns off the engine when the vehicle is stationary andthen automatically starts it again when the vehi-cle starts moving.
The Start/Stop function is available when the engine is started and can be activated if certainconditions are met. The instrument panel indi-cates if the function is available, active or notavailable. All of the vehicle's ordinary systems, such as lighting, radio, etc. function normally when theengine has been auto-stopped. Certain functionsmay be temporarily reduced, however, such asthe climate system's blower speed or extremelyhigh audio system volume.
Auto-stopTo auto-stop the engine:
• Stop the vehicle by applying the brakes andkeep the brake pedal depressed. The enginewill auto-stop.
In Eco or Comfort 5
drive mode, the engine may
auto-stop before the vehicle has completely stop-ped. With Adaptive Cruise Control or Pilot Assist acti- vated, the engine will auto-stop after approxi-mately three seconds.
Auto-startThe following conditions must be met for theengine to auto-start. • Release the brake pedal. The engine will auto-start and the vehicle can be driven. Onan uphill gradient, Hill Start Assist (HSA) willactivate to help prevent the vehicle from roll-ing backward.
• When Auto-hold is activated, auto-start willbe delayed until the accelerator is pressed.
• When Adaptive Cruise Control or Pilot Assistare activated, the engine will auto-start whenthe 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 engine willauto-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.
5
Normal start mode.