2019 VOLVO S90 TWIN ENGINE Owners Manual

DRIVER SUPPORT
}}
* Option/accessory.295
Adaptive Cruise Control andcollision warning
Adaptive Cruise Control can alert the driver if thedistance to the vehicle ahead suddenly decrea-ses to an unsafe distance.
Collision warning audible signal and symbol35.
Acoustic collision warning signal
Collision warning symbol
Camera/radar sensor distance monitoring
Adaptive Cruise Control utilizes approx. 40% ofthe vehicle's braking capacity. If a situationrequires more braking force than the AdaptiveCruise Control can provide, and if the driver doesnot apply the brakes, a warning light and audible
warning signal will be activated to alert the driverthat immediate action is required.

WARNING
Adaptive Cruise Control only issues a warningfor vehicles detected by its radar unit – thus, awarning may come after a delay or not at all.
Never wait for a warning. Apply thebrakes when necessary.

Related information
Adaptive Cruise Control* (p. 292)
Head-up display for Adaptive CruiseControl with collision warning
In vehicles equipped with a head-up display*, aflashing warning symbol will be displayed on thewindshield.
Collision warning symbol on the windshield36.

NOTE
Visual warnings on the windshield may be dif-ficult to notice in cases of strong sunlight,reflections, extreme light contrasts, or if thedriver is wearing sunglasses or is not lookingstraight ahead.
35Note: This illustration is general and details may vary depending on model.36Note: This illustration is general and details may vary depending on model.

||
DRIVER SUPPORT
* Option/accessory.296

Related information
Adaptive Cruise Control* (p. 292)
Head-up display* (p. 138)
Activating and starting AdaptiveCruise Control
Adaptive Cruise Control (ACC37) must first beactivated and then started before it can regulatespeed and distance.

Putting Adaptive Cruise Control in
standby mode
Note: This illustration is general and details may varydepending on model.
Adaptive Cruise Control is in standby mode eachtime the engine is started. To put ACC in standbymode from active mode:
–Press ◀ (2) or ▶ (3) on the steering wheel
keypad and scroll to the (4) function.
> The symbol will appear and AdaptiveCruise Control will go into standby mode.
Starting/activating Adaptive Cruise
Control
To start ACC:
The driver's seat belt must be buckled andthe driver's door must be closed.
There must be a vehicle ahead (target vehi-cle) within a reasonable distance or yourvehicle's current speed must be at least15 km/h (9 mph).
Note: This illustration is general and details may varydepending on model.
–With the (4) function displayed, press
(1) on the steering wheel keypad.
> Adaptive Cruise Control will start and thecurrent speed will be stored, which will beshown by numbers in the center of thespeedometer.
37Adaptive Cruise Control

DRIVER SUPPORT
}}
* Option/accessory.297
ACC will only regulate the timeinterval to the vehicle aheadwhen the distance symbolshows two vehicles.
A speed interval will be markedat the same time.
The higher speed is the setspeed for your vehicle and thelower speed is the speed of thevehicle ahead (target vehicle).

Related information
Adaptive Cruise Control* (p. 292)
Managing Adaptive Cruise Controlspeed
Adaptive Cruise Control (ACC38) can be set tovarious speeds.
Setting/changing set speed
Note: This illustration is general and details may varydepending on model and market.
: Increases the set speed.
: Reduces the set speed.
Set speed.
–Change a set speed by pressing the (1)
or (2) buttons briefly or by pressing andholding them:
Press briefly: Press briefly: each presschanges the speed in +/- 5 mph(+/- 5 km/h) increments.
Press and hold: release the button whenthe set speed indicator (3) has moved tothe desired speed.
The most recently set speed will be stored.
If speed is increased by depressing the accelera-
tor pedal while pressing the (1) button onthe steering wheel, the vehicle's speed when thebutton is pressed will be stored as the set speed.
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.
38Adaptive Cruise Control

||
DRIVER SUPPORT
* Option/accessory.298

Automatic transmission
Adaptive Cruise Control can follow another vehi-cle at speeds from a standstill up to 200 km/h(125 mph).
The lowest speed that can be set for AdaptiveCruise Control is 30 km/h (20 mph). When fol-lowing another vehicle, ACC can monitor thatvehicle's speed and slow your own vehicle downto a standstill, but it is not possible to set speedslower than 30 km/h (20 mph).
The highest possible speed that can be set is200 km/h (125 mph).

Related information
Adaptive Cruise Control* (p. 292)
Setting Adaptive Cruise Controltime intervals
Adaptive Cruise Control (ACC39) can be set tovarious time intervals to the vehicle ahead.
Different time intervals to thevehicle ahead can be selectedand are shown in the instru-ment panel as 1–5 horizontalbars. The more bars, the longerthe time interval. One bar rep-resents an interval ofapprox. 1 second to the vehicle ahead. 5 barsrepresents approx. 3 seconds.
The same symbol appears when the DistanceAlert function is activated.

NOTE
When the symbol in the instrument panelshows two vehicles, ACC is following the vehi-cle ahead at a preset time interval.
When only one vehicle is shown, there is novehicle ahead within a reasonable distance.
Controls for setting a time interval40.
Reduce the time interval
Increase the time interval
Distance indicator
–Press the (1) or (2) button to decrease orincrease the time interval.
> The distance indicator (3) shows the cur-rent time interval.
In order to help your vehicle follow the vehicleahead as smoothly and comfortably as possible,Adaptive Cruise Control allows the time intervalto vary noticeably in certain situations. At lowspeeds, when the distance to the vehicle aheadis short, Adaptive Cruise Control increases thetime interval slightly.
39Adaptive Cruise Control40Note: This illustration is general and details may vary depending on model.

DRIVER SUPPORT
}}
* Option/accessory.299

NOTE
The greater the vehicles' speed, thegreater the distance between them for aset time interval.
Only use the time intervals permitted bylocal traffic regulations.
If the Adaptive Cruise Control does notseem to respond with a speed increasewhen activated, it may be because thetime interval to the vehicle ahead isshorter than the set time interval.

WARNING
Only use a time interval suitable for thecurrent traffic conditions.
The driver should be aware that shorttime intervals give them limited time toreact and act to any unforeseen trafficsituation.

Setting how ACC should maintain
distance * to the vehicle ahead
A number of different settings can be made forhow Adaptive Cruise Control should maintain atime interval to the vehicle ahead. Settings aremade using the DRIVE MODE controls.
Select one of the following:
Eco - ACC will focus on providing optimalfuel economy, which will increase the timeinterval to the vehicle ahead.
Comfort - ACC will focus on following theset time interval to the vehicle ahead assmoothly as possible.
Dynamic - ACC will focus on following theset time interval to the vehicle ahead moreexactly, which could mean faster accelerationand heavier braking.
For more information, see "Drive modes".
Related information
Adaptive Cruise Control* (p. 292)
Drive modes (p. 446)
Managing Cruise Control speed (p. 285)
Deactivating/reactivating AdaptiveCruise Control
Adaptive Cruise Control (ACC41) can be tempo-rarily put into standby mode and then reactiva-ted.
Deactivating and putting Adaptive
Cruise Control in standby mode
Note: This illustration is general and details may varydepending on model.
41Adaptive Cruise Control

||
DRIVER SUPPORT
300
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
* Option/accessory.301
To reactivate ACC from standby mode:
–Press the button on the steering wheel(1).
> Speed will be set to the most recentlystored speed.

WARNING
A noticeable increase in speed may follow
when the speed is resumed with the steering wheel button.

Related information
Adaptive Cruise Control* (p. 292)
Passing assistance with AdaptiveCruise Control
Adaptive Cruise Control (ACC43) can assist thedriver when passing other vehicles.
How passing assistance works
When ACC is following another vehicle and youindicate that you intend to pass that vehicle by
using the turn signal44, Adaptive Cruise Controlwill begin accelerating toward the vehicle aheadbefore your vehicle has moved into the passinglane.
The function will then delay a speed reduction toavoid early braking as your vehicle approaches aslower-moving vehicle.
The function remains active until your vehicle haspassed the other vehicle.

WARNING
Please note that this function can be acti-vated in more situations than just passinganother vehicle, such as when a direction indi-cator is used to indicate a lane change orbefore exiting to another road – the vehiclewill then briefly accelerate.
Related information
Adaptive Cruise Control* (p. 292)
Starting passing assistance with AdaptiveCruise Control (p. 302)
Limitations of passing assistance with Adap-tive Cruise Control (p. 302)
43Adaptive Cruise Control44Only the left-hand turn signal for left-hand drive vehicles, or right-hand turn signal for right-hand drive vehicles.

DRIVER SUPPORT
* Option/accessory.302
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