2019 VOLVO S90 TWIN ENGINE Owners Manual

DRIVER SUPPORT
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Instrument panel
Speed indicators52.
Set speed
Speed of the vehicle ahead
The current speed of your vehicle
See "Pilot Assist symbols and messages" forexamples of different combinations of symbolsdepending on the traffic situation.

Related information
Pilot Assist and collision warning (p. 311)
Head-up display for Pilot Assist during colli-sion risks (p. 312)
Activating and starting Pilot Assist (p. 312)
Managing Pilot Assist speed (p. 314)
Setting a time interval for Pilot Assist(p. 315)
Deactivating/reactivating Pilot Assist(p. 316)
Passing assistance with Pilot Assist (p. 318)
Starting passing assistance with Pilot Assist(p. 319)
Passing assistance with Pilot Assist limita-tions (p. 319)
Switching target vehicles with Pilot Assist(p. 319)
Auto-hold braking with Pilot Assist (p. 320)
Pilot Assist limitations (p. 321)
Pilot Assist* symbols and messages (p. 322)
Pilot Assist and collision warning
Pilot Assist can alert the driver if the distance tothe vehicle ahead suddenly decreases to anunsafe distance.
Collision warning audible signal and symbol53.
Acoustic collision warning signal
Collision warning symbol
Camera/radar sensor distance monitoring
Pilot Assist uses approx. 40% of the vehicle'sbraking capacity. If a situation requires morebraking force than Pilot Assist can provide, and ifthe driver does not apply the brakes, a warninglight and audible warning signal will be activated
52Note: This illustration is general and details may vary depending on model.53The illustration is generic - details may vary according to vehicle model.

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to alert the driver that immediate action isrequired.

WARNING
Pilot Assist only issues a warning for vehiclesdetected by its camera and radar unit – thus,a warning may come after a delay or not at all.
Never wait for a warning. Apply thebrakes when necessary!

Related information
Pilot Assist (p. 308)
Head-up display for Pilot Assistduring collision risks
In vehicles equipped with a head-up display*, aflashing warning symbol will be displayed on thewindshield.
Collision warning symbol on the windshield54.

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.

Related information
Pilot Assist (p. 308)
Head-up display* (p. 138)
Activating and starting Pilot Assist
Pilot Assist must first be activated and thenstarted before it can help regulate speed anddistance and provide steering assistance.
Note: This illustration is general and details may varydepending on model.
To start Pilot Assist:
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).
54Note: This illustration is general and details may vary depending on model.

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With Adaptive Cruise Control in standby mode:
1.Press the ▶ button on the steering wheel (6).
>The symbol will change to PilotAssist in standby mode (8).
2.Press the button on the steering wheel(2).
> Pilot Assist will start and the currentspeed will be stored, which will be shownby numbers in the center of the speedom-eter.
...or...
With Adaptive Cruise Control started:
–Press the ▶ button on the steering wheel (6).
> Pilot Assist will start.
Pilot Assist's steering assis-tance is only active when thesteering wheel symbol (2)changes from GRAY toGREEN.
Pilot Assist will only regulatethe time interval to the vehicle ahead when thedistance symbol shows a vehicle (1) over thesteering wheel symbol.
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).

Hands on the steering wheel
Pilot Assist only functions if the driver's handsare on the steering wheel.
If Pilot Assist detects that thedriver's hands are not on thesteering wheel, a symbol andtext message will appear toinstruct the driver to activelysteer the vehicle.
If the driver's hands are still detected on thesteering wheel after a few seconds have passed,the instructions to actively steer the vehicle willbe repeated, accompanied by an audible signal.
If Pilot Assist still does not detect the driver'shands on the steering wheel after a few moreseconds have passed, the audible signal willbecome intense and the steering function willswitch off. Pilot Assist must then be reactivated
by pressing the button on the steeringwheel.
NOTE
Note that the Pilot Assist function only workswhen the driver's hands are on the steeringwheel.

Related information
Pilot Assist (p. 308)

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Managing Pilot Assist speed
Pilot Assist can be set to various 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.

Automatic transmission
Pilot Assist can follow another vehicle at speedsfrom a standstill up to 200 km/h (125 mph).
The lowest speed that can be set for Pilot Assistis 30 km/h (20 mph). When following anothervehicle, ACC can monitor that vehicle's speedand slow your own vehicle down to a standstill,but it is not possible to set speeds lower than30 km/h (20 mph).
The highest possible speed that can be set is200 km/h (125 mph).
Related information
Pilot Assist (p. 308)

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Setting a time interval for PilotAssist
Pilot Assist can be set to different time intervals.
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.

NOTE
When the symbol in the instrument panelshows a vehicle and a steering wheel, PilotAssist follows a vehicle ahead at a presettime interval.
When only a steering wheel is shown, there isno vehicle ahead within a reasonable dis-tance.
Controls for setting a time interval55.
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 follow the vehicle ahead as smoothlyas possible, Pilot Assist allows the time interval tovary considerably in certain situations. For exam-ple, at low speeds and short distances to thevehicle ahead, Pilot Assist increases the timeinterval slightly.
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 Pilot Assist does not seem to respondwith a speed increase when activated, itmay be because the time interval to thevehicle ahead is shorter than the set timeinterval.

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 Pilot Assist should
maintain distance * to the vehicle ahead
The driver can choose different drive modes todetermine how Pilot Assist should maintain atime interval to the vehicle ahead. Settings aremade using the DRIVE MODE controls.
55Note: This illustration is general and details may vary depending on model.

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Select one of the following:
Eco - Pilot Assist will focus on providingoptimal fuel economy, which will increase thetime interval to the vehicle ahead.
Comfort - Pilot Assist will focus on followingthe set time interval to the vehicle ahead assmoothly as possible.
Dynamic - Pilot Assist will focus on follow-ing the set time interval to the vehicle aheadmore exactly, which could mean faster accel-eration and heavier braking.
For more information, see "Drive modes".

Related information
Pilot Assist (p. 308)
Drive modes (p. 446)
Managing Cruise Control speed (p. 285)
Deactivating/reactivating PilotAssist
Pilot Assist can be temporarily put into standbymode and then reactivated.
Deactivating and putting Pilot Assist in
standby mode
Note: This illustration is general and details may varydepending on model.
To temporarily deactivate Pilot Assist and put it instandby mode:
–Press the button on the steering wheel(2).
> Pilot Assist goes into standby mode - thesymbol (8) 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.
...or...
–Press the ◀ button on the steering wheel (3).
> Pilot Assist is turned off and AdaptiveCruise Control will go into active mode.
WARNING
With Pilot Assist in standby mode, thedriver must intervene and steer and regu-late both speed and distance to the vehi-cle ahead.
If the vehicle comes too close to a vehicleahead when Pilot Assist is in standbymode, the driver is instead warned of theshort distance by the Distance Alert func-tion.

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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

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

Related information
Pilot Assist (p. 308)
Passing assistance with Pilot Assist
Pilot Assist can assist the driver when passingother vehicles.
How passing assistance works
When Pilot Assist is following another vehicleand you indicate that you intend to pass that
vehicle by using the turn signal57, Pilot Assist willbegin 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
Pilot Assist (p. 308)
Starting passing assistance with Pilot Assist(p. 319)
Passing assistance with Pilot Assist limita-tions (p. 319)
57Only the left-hand turn signal for left-hand drive vehicles, or right-hand turn signal for right-hand drive vehicles.