2018 VOLVO V90 light

STARTING AND DRIVING
411
Related information
•Activating and deactivating the parking brake (p. 408)
• Start battery (p. 589)
• Volvo's service program (p. 566)
Auto-hold brakes
With the Auto-hold brake function, the driver can release the brake pedal and the brakes willremain applied, for example, when the vehiclehas stopped at a traffic light or intersection.
When the vehicle stops, the brakes are activated automatically. The function can use either thenormal brakes or the parking brakes to keep thevehicle stationary and works on flat surfaces orhills. When driving off, the brakes will be automat-ically released if the driver's seat belt is buckled.
NOTE
When braking to a stop on an uphill or down- hill gradient, depress the brake pedal withslightly more force than usual before releas-ing to ensure that the vehicle cannot move atall.
The parking brake is activated if: • the vehicle is switched off
• the driver's door is opened
• the driver's seat belt is removed
• the vehicle has been stationary for a pro- longed period of time (5-10 minutes)
Symbols in the instrument panel
SymbolMeaning
This symbol illuminates when the function is using the normal brakesto keep the vehicle stationary.
A
B This symbol illuminates when the function is using the parking braketo keep the vehicle stationary.
A
Canadian models.
B US models.
Related information
• Activating and deactivating Auto-hold at a standstill (p. 412)
• Brakes (p. 405)
• Parking brake (p. 407)
• Hill Start Assist (p. 412)

STARTING AND DRIVING
412
Activating and deactivating Auto-hold at a standstill The Auto-hold brake function at a standstill is activated with the button in the tunnel console.
–Press the button in the tunnel console to activate or deactivate the function.
> The indicator light in the button will illumi-nate when the function is activated. The function will remain active the next timethe vehicle is started.
When shutting offIf the function is active and holding thevehicle stationary using the normalbrakes (A symbol lit), the brake pedalmust be depressed while pressing the
button in order to deactivate Auto-hold.
• The function will remain off until it is reactiva- ted.
• When Auto-hold is switched off, Hill StartAssist (HSA) will remain active to help pre-vent the vehicle from rolling backward whenstarting up a hill.
Related information
•Auto-hold brakes (p. 411)
Hill Start Assist
The function for assisting when starting the vehi- cle on inclines, Hill Start Assist (HSA), helpsprevent the vehicle from rolling backward whenstarting on an uphill gradient. When backing upa hill, HSA helps prevent the vehicle from rollingforward.
The function retains pressure from the brake pedal in the brake system for several secondsafter the brake pedal has been released. This temporary braking effect is released after a few seconds or when the driver begins driving. Hill Start Assist is available even if the Auto-hold brake function is switched off.
Related information
• Auto-hold brakes (p. 411)
• Brakes (p. 405)

STARTING AND DRIVING
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* Option/accessory.413
Braking assist after a collision In a collision in which the activation level is reached for the pyrotechnic seat belt tensionersor airbags, or if a collision with a large animal isdetected, the vehicle's brakes will be automati-cally activated. This function is intended to helpprevent or reduce the effects of any subsequentcollision.
After a serious collision, it may no longer be pos- sible to control and steer the vehicle. In order toavoid or mitigate a possible further collision witha vehicle or an object in the vehicle's path, thebrake assist system is activated automatically tohelp stop the vehicle safely. The brake lights and hazard warning flashers are activated during braking. When the vehicle has stopped, the hazard warning flashers will con-tinue to flash and the parking brake will beapplied. If braking is not appropriate, e.g. if there is a risk of being hit by passing traffic, the driver can over-ride the system by depressing the acceleratorpedal. This function assumes that the brake system is intact after a collision. Brake assist is part of the Rear Collision Warning and Blind Spot Information safety systems.
Related information
•Rear Collision Warning (p. 341)
• BLIS
* (p. 342)
• Brake functions (p. 404)
Transmission The transmission is part of the vehicle's driveline (power transmission) between the engine andthe drive wheels. The function of the transmis-sion is to change gears depending on speedand power needs.
The vehicle has an 8-speed automatic transmis- sion. The number of gears allows the engine'storque and power band to be effectively utilized.Two of the gears are overdrive gears that savefuel when driving at a constant engine speed.Manual shifting is also possible. The instrumentpanel shows the gear currently in use.
CAUTION
Check the operating temperature of the transmission to help avoid damage to any ofthe drive system components. If there is a riskof overheating, a warning symbol will appearin the instrument panel and a text messagewill be displayed. Follow the recommenda-tions given.
Symbols in the instrument panelIf a problem should occur with the transmission, a symbol and a message will appear in the instru-ment panel.

STARTING AND DRIVING
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* Option/accessory.419
Gear indicator in 8" instrument panel.
Related information
•Gear selector positions for automatic trans- missions (p. 414)
All Wheel Drive (AWD)
*
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. 419)
• Transmission (p. 413)
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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STARTING AND DRIVING
* Option/accessory.
422 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.

STARTING AND DRIVING
* Option/accessory.423
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. 421)
• Activating and deactivating ECO drive modeusing the function button (p. 423)
• Drive modes
* (p. 419)
• Economical driving (p. 430)
• Start/Stop function (p. 424)
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. 421)
• Changing drive mode
* (p. 421)
• Drive modes
* (p. 419)

STARTING AND DRIVING
* Option/accessory.
424
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. 424)
• Conditions for the Start/Stop function(p. 426)
• Drive modes
* (p. 419)
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 6
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.
6
Normal start mode.

STARTING AND DRIVING
* Option/accessory.425
Symbols in the instrument panel
12" instrument panel *
•READY
will be displayed in the tachometer
when Start/Stop is available.
• An indicator in the tachometer will point toward
READY when Start/Stop is active
and the engine has auto-stopped.
• READY
will be grayed-out when Start/Stop
is not available.
• No message will be shown when the func- tion is turned off.
The function is active and the engine has auto-stopped.
8" instrument panel
The symbol is displayed at the bottom of the speedometer.
SymbolMeaning
White symbol: the function is avail- able.
Beige symbol: The function is active and the engine has auto-stopped.
the function is not available because the conditions have notbeen met. No symbol will be shown when the function is turned off.
Related information
•Temporarily deactivating the Start/Stop func- tion (p. 425)
• Conditions for the Start/Stop function(p. 426)
• Start/Stop function (p. 424)
• Hill Start Assist (p. 412)
• Auto-hold brakes (p. 411)
Temporarily deactivating the Start/Stop function
In certain situations, it may be advisable to tem- porarily turn the Start/Stop function off.
To turn off Start/Stop, tap theStart/Stop function button in
the center display's Function view. The indicator light in thebutton will go out when thefunction has been turned off.
The function will remain turned off until:
• it is reactivated
• the drive mode is changed to Eco or Comfort
• the engine is restarted.
Related information
•
Driving with the Start/Stop function (p. 424)
• Conditions for the Start/Stop function (p. 426)