2019 VOLVO S90 TWIN ENGINE engine

LIGHTING
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Interior Lighting
The interior is equipped with several differenttypes of lighting to improve the experience. Thisincludes reading lamps, glove box lighting andground lighting.
All lighting in the passenger compartment can beturned on and off manually within 5 minutesafter:
the engine has been switched off and theignition is in mode 0.
the vehicle is unlocked but the engine hasnot been started.

Front ceiling lighting
The controls in the ceiling console for the front readinglights and courtesy lighting.
Reading light left side
Passenger compartment lighting
Courtesy lighting auto switch
Reading light right side
Reading lights
The reading lights on the right and left sides areswitched on and off by briefly pressing the but-tons in the ceiling console. To adjust the bright-ness, press and hold the button.

Passenger compartment lighting
Briefly press the button in the ceiling console toswitch on or off the footwell lighting and ceilinglighting.

Courtesy lighting auto switch
Activate the auto switch by briefly pressing theAUTO button in the ceiling console. With Autoactivated, the indicator light in the button and thecourtesy lighting come on and are turned off asfollows.
The courtesy lighting:
comes on when the vehicle is unlocked andwhen the ignition is switched off
goes off when the engine is started andwhen the vehicle is locked
comes on or goes off when a side door isopened or closed
remains on for 2 minutes if any of the sidedoors are open.
Rear roof lighting
Reading lights are located in the rear section ofthe vehicle and can also be used as passengercompartment lighting.
In vehicles with panoramic roofs*, there are two lampunits, one on each side of the ceiling.
Briefly press the button on the light to turn on oroff the reading lights. To adjust the brightness,press and hold the button.

Glove compartment lighting
The glove compartment lighting comes on orgoes off when the glove compartment is openedor closed.

Vanity mirror lighting *
The vanity mirror lighting comes on or goes offwhen the cover over the mirror is opened orclosed.

LIGHTING
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* Option/accessory.159

Ground lighting *
The ground lighting comes on or goes off when adoor is opened or closed.

Doorsill lighting
The doorsill lighting comes on or goes off when adoor is opened or closed.

Trunk lighting
The trunk lighting comes on or goes off when thetrunk lid is opened or closed.

Ambient Lighting
The ambient lighting comes on when the doorsare opened and goes out when the vehicle islocked. Ambient lighting brightness can beadjusted in the center display and also fine-tunedusing the thumb wheel in the dashboard.

Mood lighting *
The vehicle is equipped with LEDs that providefaint lighting in various colors. This lighting is onwhen the engine is running. Mood lighting can beadjusted in the center display and also fine-tunedusing the thumb wheel in the dashboard.

Lighting in the door storage
compartments
Lighting in the door storage compartmentscomes on when the doors are opened and goesout when the vehicle is locked. The brightnesscan be adjusted using the thumb wheel in thedashboard.
Lighting in the tunnel console's front
cup holder
The lighting in front console cup holdersswitches on when the vehicle is unlocked and offwhen the vehicle is locked. The brightness canbe adjusted using the thumb wheel in the dash-board.

Related information
Adjusting interior lighting (p. 159)
Lighting panel and controls (p. 148)
Ignition modes (p. 429)
Passenger compartment interior (p. 574)
Adjusting interior lighting
Illumination in the vehicle varies depending onignition mode. The interior lighting can beadjusted with a thumb wheel in the dashboardand certain light functions can also be adjustedvia the center display.
The thumb wheel on the dash-board to the left of the steeringwheel can be used to adjustthe brightness of the displaylighting, instrument lights,ambient lighting and moodlighting*.

Adjust ambient decor lighting
1.Tap Settings in the Top view in the centerdisplay.
2. Tap My CarLights and LightingInterior Lighting.
3. Choose from among the following settings:
Under Ambient Light Intensity, selectOff, Low or High.
Under Ambient Light Level, selectReduced or Full.

Adjusting mood lighting *
The vehicle is equipped with several LEDs thatprovide faint lighting in various colors. This light-ing is on when the engine is running.

WINDOWS, GLASS AND MIRRORS
* Option/accessory.168
Storing positions for seats, mirrors and head-up display* (p. 182)
Activating and deactivating the heated rearwindow and door mirrors (p. 218)
Adjusting the rearview mirrordimming function
Bright light entering the vehicle from behind, e.g.from the headlights of following vehicles, couldreflect in the rearview mirror and door mirrorsand cause a glare. Use the dimming functionwhen light from behind is distracting.

Auto-dim
If bright light enters the vehicle from behind, thedoor mirrors will automatically dim. Auto-dim isalways active when the engine is running, exceptwhen reverse gear is engaged.

NOTE
Adjustments to the sensitivity level will not benoticeable immediately but will instead takeeffect after a short period of time.
The sensitivity level for dimming will affect boththe rearview mirror and door mirrors.
To change the dimming sensitivity level:
1.Tap Settings in the Top view in the centerdisplay.
2.Tap My CarMirrors and Convenience.
3.Under Rearview Mirror Auto Dimming,select Normal, Dark or Light.
The rearview mirror instead has two sensors -one pointing forward and one pointing rearward -
which work together to identify and eliminateglare. The forward-pointing sensor monitorsambient light, while the rearward-pointing sensormonitors light from the headlights of followingvehicles.
For the door mirrors to be equipped with auto-dim, the rearview mirror must also be equippedwith auto-dim.
NOTE
If the sensors are obstructed by e.g. a parkingpermit, transponder, sunshade or objects onthe seats or parcel shelf in a way that pre-vents light from reaching the sensors, theauto-dim function in the rearview and doormirrors will be reduced.

Related information
Rearview/door mirrors (p. 167)
Adjusting the door mirrors (p. 169)

WINDOWS, GLASS AND MIRRORS
176
Using the windshield wipers
The windshield wipers clean the windshield. Theright-side steering wheel lever is used to adjustwindshield wiper settings.
Right-hand steering wheel lever.
Thumb wheel, used to set rain sensor sensi-tivity and interval wiper speed.

Single sweep
Move the lever down and release for asingle sweep.

Wipers off
Move the lever to position 0 to turn offthe windshield wipers.

Interval wipers
Set the number of sweeps per time unitwith the thumb wheel when interval wip-ers are selected.
Continuous wipers
Move the lever upward for the wipers tooperate at normal speed.
Move the lever upward again for the wip-ers to operate at high speed.

CAUTION
Before activating the wipers, make sure thatthe wiper blades are not frozen in place andthat any snow or ice on the windshield hasbeen scraped away.

CAUTION
Use plenty of washer fluid when the wipersclean the windshield. The windshield must bewet when the windshield wipers are working.

Related information
Using the rain sensor (p. 176)
Using the windshield and headlight washers(p. 178)
Wiper blades and washer fluid (p. 175)
Using the rain sensor's memory function(p. 177)
Filling washer fluid (p. 635)
Windshield wipers in the service position(p. 634)
Replacing windshield wiper blades (p. 633)
Using the rain sensor
The rain sensor monitors the amount of water onthe windshield and automatically starts the wind-shield wipers. Rain sensor sensitivity can beadjusted using the thumb wheel on the right-hand steering wheel lever.
Right-hand steering wheel lever.
Rain sensor button
Thumb wheel, sensitivity/interval wiper speed
When the rain sensor is activated, the rainsensor symbol will be displayed in the instrumentpanel.

Activating the rain sensor
When the rain sensor is activated, the enginemust be running or the ignition must be in mode Ior II. The windshield wiper lever must also be inposition 0 or in the single sweep position.

WINDOWS, GLASS AND MIRRORS
177
Activate the rain sensor by pressing the rain sen-
sor button .
If the lever is pressed down, the wipers will makeadditional sweeps across the windshield.
Turn the thumb wheel upward for increased sen-sitivity and downward for decreased sensitivity.The wipers will make one extra sweep when thethumb wheel is turned upward.

Deactivate the rain sensor
Deactivate the rain sensor by pressing the rain sensor button or moving the lever upward toanother wiper mode.
The rain sensor is automatically deactivated inignition mode 0 or when the engine is switchedoff.
The rain sensor is also automatically deactivatedwhen the wiper blades are put in the serviceposition. The rain sensor will reactivate whenservice mode is switched off.

CAUTION
The windshield wipers may start inadvertentlyand be damaged in automatic car washes.Deactivate the rain sensor when the engine isrunning or when the ignition is in mode I or II.The symbol in the instrument panel will goout.
Related information
Using the windshield and headlight washers(p. 178)
Wiper blades and washer fluid (p. 175)
Using the rain sensor's memory function(p. 177)
Filling washer fluid (p. 635)
Windshield wipers in the service position(p. 634)
Replacing windshield wiper blades (p. 633)
Using the windshield wipers (p. 176)
Using the rain sensor's memoryfunction
The rain sensor monitors the amount of water onthe windshield and automatically starts the wind-shield wipers.

Activating/deactivating memory
function
The rain sensor's memory function can be set toactivate so that the rain sensor button does notneed to be pressed each time the engine isstarted:
1.Tap Settings in the Top view in the centerdisplay.
2. Tap My CarWipers.
3.Select Rain Sensor Memory to activate/deactivate the memory function.

Related information
Using the rain sensor (p. 176)
Using the windshield and headlight washers(p. 178)
Wiper blades and washer fluid (p. 175)
Filling washer fluid (p. 635)
Windshield wipers in the service position(p. 634)
Replacing windshield wiper blades (p. 633)
Using the windshield wipers (p. 176)

SEATS AND STEERING WHEEL
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Power* front seats
The power front seats can be adjusted in a num-ber of different ways for optimal comfort andergonomics. The power seat can be moved for-ward/backward and up/down. The height andlength* of the seat cushion and the tilt of thebackrest can be adjusted. Lumbar support* can
be adjusted up, down, forward and backward3.
The power seats can be adjusted for a certainperiod of time after the door is unlocked withoutthe engine running. The seats can always beadjusted while the engine is running. They canalso be adjusted for a short period after theengine is turned off.

CAUTION
The power seats have an overload protectorthat is triggered if a seat is blocked by anyobject. If this occurs, remove the object andattempt to adjust the seat again.

Related information
Manual front seats (p. 180)
Adjusting the power* front seats (p. 181)
Storing positions for seats, mirrors and head-up display* (p. 182)
Using stored positions for seats, mirrors andhead-up display* (p. 183)
Adjusting front seat massage settings*(p. 185)
Adjusting* front seat cushion length (p. 185)
Front seat massage* settings (p. 184)
Adjusting front seat side bolster settings*(p. 186)
Adjusting front seat lumbar support* (p. 187)
Adjusting the passenger seat from the driv-er's seat* (p. 188)
Adjusting the power* front seats
Set the desired seating position using the con-trols on the front seat cushion. To set the con-venience functions, turn the multifunction con-
trol4 upward/downward.
The illustration shows the controls in a vehicle with four-way lumbar support*. Vehicles with two-way lumbar sup-port* do not have the rotary multifunction control.
In vehicles with four-way lumbar support*,
turn the multifunction control4 up/down toset the convenience functions. In vehicleswith two-way lumbar support*, use the roundbutton to adjust the lumbar support forward/rearward.
Raise/lower the front edge of the seat cush-ion by moving the control up/down.
3Applies for four-way lumbar support*. Two-way lumbar support* is adjusted forward/rearward.

SEATS AND STEERING WHEEL
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Adjusting front seat massage
settings*
The settings for the multifunctional seats can beadjusted using either the mutifunction control onthe seat or the center display. The adjustmentsettings are shown in the center display.

Adjusting front seat massage settings
The front seat backrests have a massage func-tion. Air-filled cushions provide the massagingaction and a number of settings are available.
The massage function can only be activatedwhen the engine is running.
1. Activate the multifunction control by turning
the control upward/downward. The seatsettings view will appear in the center dis-play.
2.Select Massage in the seat settings view.
3.Select massage settings by tapping the cen-ter display or by moving the cursor up/down
using the multifunction control's upper /
lower buttons. Change a setting in theselected function by tapping the arrows onthe center display or by using the multifunc-
tion control's front /rear buttons.

Related information
Manual front seats (p. 180)
Power* front seats (p. 181)
Adjusting the power* front seats (p. 181)
Storing positions for seats, mirrors and head-up display* (p. 182)
Using stored positions for seats, mirrors andhead-up display* (p. 183)
Adjusting* front seat cushion length (p. 185)
Front seat massage* settings (p. 184)
Adjusting front seat side bolster settings*(p. 186)
Adjusting front seat lumbar support* (p. 187)
Adjusting the passenger seat from the driv-er's seat* (p. 188)
Adjusting* front seat cushion length
Depending on the selected equipment level, thelength of the seat cushion can either beadjusted using the multifunction control* on theside of the seat cushion, or manually adjustedusing the control on the front of the seat cush-ion.
Adjusting seat cushion length using the
multifunction control
The multifunction control, located on the side of the seatcushion.
1. Activate the multifunction control by turning
the control upward/downward. The seatsettings view will appear in the center dis-play.

SEATS AND STEERING WHEEL
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Move the passenger seat forward/rearwardby moving the control forward/rearward.
Change the backrest tilt of the passengerseat by moving the control forward/back-ward.

Related information
Manual front seats (p. 180)
Power* front seats (p. 181)
Adjusting the power* front seats (p. 181)
Storing positions for seats, mirrors and head-up display* (p. 182)
Using stored positions for seats, mirrors andhead-up display* (p. 183)
Adjusting front seat massage settings*(p. 185)
Adjusting* front seat cushion length (p. 185)
Front seat massage* settings (p. 184)
Adjusting front seat side bolster settings*(p. 186)
Adjusting front seat lumbar support* (p. 187)
Folding down the rear seat
backrests*
The rear seat backrest is divided into two sec-
tions that can be folded down separately5.
WARNING
Adjust the seat and ensure it locks intoposition before driving. Use caution whenadjusting the seat. Uncontrolled or care-less adjustments could lead to injury.
Long objects must always be securelytied down to help prevent injury or dam-age in the event of sudden braking.
Always turn off the engine and apply theparking brake when loading or unloadingthe vehicle.
Put the gear selector in P to help preventthe gear selector from being inadvertentlymoved.

CAUTION
When the backrest is folded down, make surethere are no objects in the rear seat, and theseat belts are not buckled. Otherwise there isa risk of damage to the upholstery.