2019 VOLVO S90 TWIN ENGINE parking brake

LIGHTING
* Option/accessory.149

WARNING
The vehicle lighting system cannot in all situa-tions determine when the daylight is too weakor not strong enough, e.g. when there is fogor rain.
The driver is always responsible for driving thevehicle with lighting that is safe for the trafficconditions and as specified by applicable traf-fic regulations.

Thumbwheel in instrument panel
Thumb wheel (to the left) for adjusting interior bright-ness.

Related information
Adjusting light functions via the center dis-play (p. 149)
Interior Lighting (p. 158)
Parking lights (p. 150)
Using turn signals (p. 154)
Using high beam (p. 152)
Low beams (p. 151)
Rear fog light (p. 155)
Active Bending Lights* (p. 155)
Brake lights (p. 156)
Emergency brake lights (p. 156)
Hazard warning flashers (p. 157)
Adjusting light functions via thecenter display
A number of light functions can be adjusted andactivated via the center display. These includeactive high beams, home safe lighting andapproach lighting.
1.Tap Settings in the Top view.
2.Tap My CarLights and Lighting.
3.Select Exterior Lights or Interior Lightingand then the function that you would like toadjust.
Related information
Lighting panel and controls (p. 148)
Active high beam (p. 153)
Using home safe lighting (p. 157)
Welcome Light (p. 157)
Using turn signals (p. 154)
Changing settings in the center display's Topview (p. 128)
Function view in the center display (p. 118)

LIGHTING
* Option/accessory.157
Hazard warning flashers
Hazard warning flashers warn other road usersby all of the vehicle's turn signals being activatedat the same time. The function can be used towarn about a traffic hazard.
Hazard warning flashers button.
Press the button to activate the hazard warningflashers.

NOTE
Regulations concerning the use of hazardwarning flashers may vary from country tocountry.

Related information
Emergency brake lights (p. 156)
Using turn signals (p. 154)
Using home safe lighting
Some of the exterior lights remain on to illumi-nate the area around the vehicle. This is calledhome safe lighting.
To activate home safe lighting:
1.Switch off the ignition.
2.Push the left-side steering wheel levertoward the dashboard and release.
3. Exit the vehicle and lock the doors.
When the function is activated, a symbol will beshown in the instrument panel and the parkinglights, outer door handle lights* and the licenseplate lights will be illuminated.
The length of time home safe lighting remainsilluminated can be set in the center display.
Related information
Adjusting light functions via the center dis-play (p. 149)
Welcome Light (p. 157)
Welcome Light
Approach lighting is activated when the vehicleis unlocked and can be used to provide light asyou walk toward the vehicle.
The function is activated when the remote key isused for unlocking. The parking lights, outer doorhandle lights*, license plate lights, interior ceilinglights, footwell lighting and trunk/cargo compart-ment lighting will be illuminated. If a door isopened while the function is activated, the light-ing in the outer door handle* and the interiorlighting will remain illuminated for a longer periodof time.
This function can be activated and deactivated inthe center display.
Related information
Adjusting light functions via the center dis-play (p. 149)
Using home safe lighting (p. 157)
Remote key (p. 237)

SEATS AND STEERING WHEEL
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* Option/accessory.189
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.

DRIVER SUPPORT
* Option/accessory.270
Driver support systems
The vehicle is equipped with a number of driversupport systems that can provide the driver withactive or passive assistance in various situations.
The systems can, for example, help the driver:
maintain a set speed
maintain a set time interval to the vehicleahead
help prevent a collision by warning the driverand applying the brakes
park the vehicle.
Some of the systems are standard and others areoptions. This also varies from market to market.

Related information
Speed-dependent steering wheel resistance(p. 270)
Electronic Stability Control (p. 271)
Speed limiter (p. 275)
Automatic Speed Limiter (p. 279)
Cruise control (p. 283)
Distance Alert* (p. 288)
Adaptive Cruise Control* (p. 292)
Pilot Assist (p. 308)
Radar sensor (p. 324)
Camera (p. 329)
City Safety™ (p. 333)
Rear Collision Warning (p. 346)
BLIS* (p. 347)
Cross Traffic Alert* (p. 352)
Road Sign Information* (p. 356)
Driver Alert Control (p. 362)
Lane Keeping Aid (p. 364)
Steering assistance at risk of collision(p. 372)
Park Assist* (p. 382)
Park Assist Camera* (p. 388)
Park Assist Pilot* (p. 398)
Speed-dependent steering wheelresistance
Speed-dependent power steering increases thesteering wheel resistance in pace with the vehi-cle's speed to give the driver an enhanced feel-ing of control and stability.
Steering may feel stiffer on highways. Whenparking and at low speeds, it will be easier tomove the steering wheel.
NOTE
In some situations, the power steering maybecome too hot and require temporary cool-ing – during such time the power steering willwork at reduced output and the steeringwheel may feel more difficult to move.
In parallel with the temporarily reduced steer-ing assistance, the driver display shows amessage as well as a STEERING WHEELsymbol.

WARNING
While the power steering is working atreduced power, the driver support functionsand systems with steering assistance are notavailable.
In such a situation, the driver display showsthe Power steering failure message, com-bined with a STEERING WHEEL symbol.

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DRIVER SUPPORT
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To temporarily deactivate Adaptive Cruise Controland put it in standby mode:
–Press the button on the steering wheel(2).
>The symbol in the instrument panelchanges color from WHITE to GRAY andthe set speed in the center of the speed-ometer will change from BEIGE to GRAY.

WARNING
If Adaptive Cruise Control is in standbymode, the driver must intervene and regu-late both speed and distance to the vehicleahead.
If the vehicle comes too close to a vehicleahead when Adaptive Cruise Control is instandby mode, the driver is instead warnedof the short distance by the Distance Alertfunction.

Standby mode due to action by the driver
Adaptive Cruise Control will be temporarily deac-tivated and put in standby mode if:
the brakes are applied
the gear selector is moved to N
the vehicle is driven faster than the setspeed for more than 1 minute
Temporarily increasing speed using the accelera-tor pedal, e.g. when passing another vehicle, willnot affect the setting. The vehicle will return tothe set speed when the accelerator pedal isreleased.
Automatic standby mode
Adaptive Cruise Control is dependent on othersystems, such as Electronic Stability Control
(ESC42). If any of these other systems stopsworking, Adaptive Cruise Control will automati-cally switch off.

WARNING
With automatic standby mode, the driver iswarned by an acoustic signal and a messageon the instrument panel.
The driver must then regulate vehiclespeed, apply the brakes if necessary, andmaintain a safe distance to other vehicles.
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 is anotherobject, e.g. a speed bump.
your vehicle's speed goes under 5 km/h(3 mph) and the vehicle ahead turns so thatACC 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 by snowor heavy rain (the camera lens/radar wavesare blocked)
Reactivating Adaptive Cruise Control
from standby mode
Note: This illustration is general and details may varydepending on model.
42Electronic Stability Control

DRIVER SUPPORT
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Starting passing assistance withAdaptive Cruise Control
Several conditions must be met for passingassistance to be possible.

Requirements for passing assistance
In order to activate passing assistance:
your vehicle must be following a vehicleahead (target vehicle)
your vehicle's current speed must beat least 70 km/h (43 mph)
the set speed for ACC must be highenough to safely pass another vehicle.

Starting parking assistance
To start passing assistance:
–Turn on the left turn signal.
> Passing assistance will start.

Related information
Adaptive Cruise Control* (p. 292)
Passing assistance with Adaptive CruiseControl (p. 301)
Limitations of passing assistancewith Adaptive Cruise Control
Passing assistance functionality may be reducedin certain situations.
WARNING
The driver should be aware that if conditionssuddenly change when using Parking Assis-tance, the function may implement an unde-sired acceleration in certain conditions.
Some situations should be avoided, e.g. if:
the vehicle is approaching an exit in thesame direction as passing would normallyoccur
the vehicle ahead slows before your vehi-cle has had time to switch to the passinglane
traffic in the passing lane slows down
a vehicle for right-hand traffic is driven ina country with left-hand traffic (or viceversa).
Situations of this type can be avoided by tempo-
rarily putting ACC45 in standby mode.

Related information
Adaptive Cruise Control* (p. 292)
Passing assistance with Adaptive CruiseControl (p. 301)
Switching target vehicles withAdaptive Cruise Control
At certain speeds, models with automatic trans-
missions and Adaptive Cruise Control (ACC46)can switch target vehicles.
Switching target vehicles
If the target vehicle ahead turns suddenly, there may bestationary traffic ahead.
When Adaptive Cruise Control is actively follow-ing another vehicle at speeds under 30 km/h(20 mph) and switches targets from a movingvehicle to a stationary vehicle, Adaptive CruiseControl will brake for the stationary vehicle.
45Adaptive Cruise Control

DRIVER SUPPORT
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* Option/accessory.303

WARNING
When Adaptive Cruise Control follows anothervehicle at speeds over approx. 30 km/h(20 mph) and changes target vehicle – from amoving vehicle to a stationary one – AdaptiveCruise Control will ignore the stationary vehi-cle and instead accelerate to the storedspeed.
The driver must then intervene and applythe brakes.

Automatic standby mode when switching
targets
Adaptive Cruise Control will be disabled and gointo standby mode:
if your vehicle's speed goes below 5 km/h(3 mph) and Adaptive Cruise Control cannotdetermine if the target object is a stationaryvehicle or another object, e.g. a speed bump.
if your vehicle's speed goes under 5 km/h(3 mph) and the vehicle ahead turns so thatAdaptive Cruise Control no longer has a vehi-cle to follow.

Related information
Adaptive Cruise Control* (p. 292)
Automatic braking with AdaptiveCruise Control
The Adaptive cruise control (ACC47) has a spe-cial brake function in slow traffic and while sta-tionary.
Braking function in slow traffic and at a
standstill
In slow-moving, stop-and-go traffic or when stop-ped at a traffic light, driving will resume automati-cally if the vehicle is stopped for less thanapprox. 3 seconds. If it takes more than 3 sec-onds for the vehicle ahead to begin moving again,Adaptive Cruise Control will go into standbymode and the Auto-hold brake function will acti-vate.
–Adaptive Cruise Control can be reactivated inone of the following ways:
Pressing the button on the steeringwheel keypad.
Pressing the accelerator pedal.
> Adaptive Cruise Control will resume fol-lowing the vehicle ahead if it begins tomove within approx. 6 seconds.
NOTE
ACC can keep the vehicle stationary for nomore than 5 minutes – after that time theparking brake is applied and Adaptive CruiseControl is deactivated.
The parking brake must be released beforeAdaptive Cruise Control can be reactivated.

Deactivation of the Auto-hold brake function
In certain situations, Auto-hold will be deactivatedwhen the vehicle is at a standstill and AdaptiveCruise Control will go into standby mode. Thismeans that the brakes will be released and thevehicle could begin to roll. The driver mustactively apply the brakes to keep the vehicle sta-tionary.
This can occur if:
the driver depresses the brake pedal
the parking brake is applied
the gear selector is moved to the P, N or Rpositions
the driver puts Adaptive Cruise Control instandby mode.

Auto Activate Parking Brake
In certain situations, the parking brake will beapplied to keep the vehicle at a standstill.
46Adaptive Cruise Control47Adaptive Cruise Control

DRIVER SUPPORT
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Standby mode due to action by the driver
Pilot Assist will be temporarily deactivated andput in standby mode if:
the brakes are applied.
the gear selector is moved to N
a turn signal is used for more than 1 minute.
the vehicle is driven faster than the setspeed for more than 1 minute
Temporarily increasing speed using the accelera-tor pedal, e.g. when passing another vehicle, willnot affect the setting. The vehicle will return tothe set speed when the accelerator pedal isreleased.
When the turn signals are used, Pilot Assist'ssteering assistance will be temporarily deacti-vated. When the turn signal is switched off, steer-ing assistance will be automatically reactivated ifthe traffic lane's side markings can still bedetected.

Automatic standby mode
Pilot Assist is dependent on other systems, such
as Electronic Stability Control (ESC56). If any ofthese other systems stops working, Pilot Assistwill automatically switch off.
WARNING
With automatic standby mode, the driver iswarned by an acoustic signal and a messageon the instrument panel.
The driver must then regulate vehiclespeed, apply the brakes if necessary, andmaintain a safe distance to other vehicles.
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 steeringwheel.
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 snowor heavy rain (the camera lens/radar wavesare blocked)
your vehicle's speed goes below 5 km/h(3 mph) and Pilot Assist cannot determine ifthe 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 so thatPilot Assist no longer has a vehicle to follow.

Reactivating Pilot Assist from standby
mode
Note: This illustration is general and details may varydepending on model.
To reactivate Pilot Assist:
–Press the button on the steering wheel(1).
> Speed will be set to the most recentlystored speed.
56Electronic Stability Control