2020 VOLVO S90 TWIN ENGINE Owners Manual

DRIVER SUPPORT
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* Option/accessory.295
Pilot Assist*42
symbols and
messages
A number of symbols and messages relating to Pilot Assist may be displayed in the instru- ment panel and/or the head-up display *.
In the following illustration, Road Sign Infor- mation (RSI 43
) indicates that the maximum
permitted speed is 130 km/h (80 mph).
The previous illustration shows that Pilot Assist is set to maintain a speed of 110 km/h(68 mph) and that there is no target vehicleahead to follow. Pilot Assist will not provide any steering assis- tance because it cannot detect the lane's sidemarking lines.
The previous illustration shows that Pilot Assist is set to maintain a speed of 110 km/h(68 mph) and is following a target vehicleahead that is traveling at the same speed. Pilot Assist will not provide any steering assis- tance because it cannot detect the lane's sidemarking lines.The previous illustration shows that Pilot Assist is set to maintain a speed of 110 km/h(68 mph) and is following a target vehicleahead that is traveling at the same speed. In this example, Pilot Assist will also provide steering assistance because it can detect thelane's side marking lines.
42 Depending on market, this function can be either standard or optional.
43 Road Sign Information

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The previous illustration shows that Pilot Assist is set to maintain a speed of 110 km/h(68 mph) and that there is no target vehicleahead to follow. Pilot Assist will provide steering assistance because it can detect the lane's side markinglines.
Related information
Pilot Assist
* (p. 287)
Pilot Assist
* limitations (p. 293)
Collision risk warning from driver support
The driver support systems Adaptive Cruise Control * and Pilot Assist * can help alert the
driver if the distance to the vehicle ahead suddenly decreases to an unsafe distance.
Collision warning audible signal and symbol.
Acoustic collision warning signal
Collision warning symbol
Camera/radar sensor distance monitoring
Adaptive Cruise Control and Pilot Assist use approx. 40% of the braking capacity. If a sit-uation requires more braking force than driversupport can provide, and if the driver does not apply the brakes, a warning light and audible warning signal will be activated to alert thedriver that immediate action is required.
WARNING
The driver support system only issues a warning for vehicles detected by its radarunit – thus, a warning may come after adelay or not at all. Never wait for a warning.Apply the brakes when necessary.
Collision warning symbol on the windshield.
In vehicles equipped with a head-up display *,
a flashing warning symbol will be displayed on the windshield.
NOTE
Visual warnings on the windshield may be difficult to notice in cases of strong sun-light, reflections, extreme light contrasts,or if the driver is wearing sunglasses or isnot looking straight ahead.

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Related information
Driver support systems (p. 268)
Adaptive Cruise Control
* (p. 278)
Pilot Assist
* (p. 287)
Distance Alert
* (p. 273)
Head-up display
* (p. 139)
Switching target vehicles with driver support
At certain speeds, vehicles with automatic transmissions and the driver support func- tions Adaptive Cruise Control * and Pilot
Assist * can switch target vehicles.
Switching target vehicles
If the target vehicle ahead turns suddenly, there may be stationary traffic ahead.
When driver support is actively following another vehicle at speeds under 30 km/h
(20 mph) and switches targets from a movingvehicle to a stationary vehicle, driver supportwill brake for the stationary vehicle.
WARNING
When driver support follows another vehi- cle at speeds over approx. 30 km/h
(20 mph) and changes target vehicle –from a moving vehicle to a stationary one –driver support will ignore the stationary
vehicle and instead accelerate to the storedspeed. The driver must then intervene and apply the brakes.
Automatic standby mode when switching targets
Driver support disengages and goes into standby mode if:
your vehicle's speed goes under 5 km/h(3 mph) and driver support cannot deter-mine if the target vehicle is stationary or ifit is another object, e.g. a speed bump.
your vehicle's speed goes under 5 km/h(3 mph) and the vehicle ahead turns sothat driver support no longer has a vehicleto follow.
Related information
Driver support systems (p. 268)
Adaptive Cruise Control
* (p. 278)
Pilot Assist
* (p. 287)

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Adjusting set speed for driver support
It is possible to adjust set speeds for the Adaptive Cruise Control * and Pilot Assist *
functions.
: 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
and holding them:
Brief
press: Each press changes the
speed in +/- 5 km/h (+/- 5 mph) incre- ments.
Press
and hold: Release the button
when the set speed indicator (3) hasmoved to the desired speed.
NOTE
For vehicles without Adaptive Cruise Con- trol *, speed instead increases by +/- 1km/h
(+/- 1 mph) each time the button is pressed.
The most recently set speed will be stored.
If speed is increased by depressing the accel- erator pedal while pressing the
(1) button
on the steering wheel, the vehicle's speed when the button is pressed will be stored as the set speed. Temporarily increasing speed using the accel- erator pedal, e.g. when passing another vehi-cle, will not affect the setting. The vehicle willreturn to the set speed when the acceleratorpedal is released.
Automatic transmission
The driver support functions can follow another vehicle at speeds from a standstill upto 200 km/h (125 mph). Pilot Assist can provide steering assistance from near-stationary speeds up to 140 km/h(87 mph). The lowest speed that can be set is 30 km/h (20 mph). When following another vehicle,ACC can monitor that vehicle's speed andslow your own vehicle down to a standstill,but it is not possible to set speeds lower than30 km/h (20 mph).
Related information
Driver support systems (p. 268)
Cruise control (p. 275)
Adaptive Cruise Control
* (p. 278)
Pilot Assist
* (p. 287)

DRIVER SUPPORT
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* Option/accessory.299
Setting time interval to the vehicle ahead The time interval to the vehicle ahead can be set for the functions Adaptive Cruise Control *,
Pilot Assist * and Distance Alert *.
Different time intervals to the vehicle ahead can be selectedand are shown in the instru-ment panel as 1–5 horizontalbars. The more bars, thelonger the time interval. Onebar represents an interval of
approx. 1 second to the vehicle ahead. 5 barsrepresents approx. 3 seconds.
NOTE
When the symbol in the instrument panel shows a vehicle and a steering wheel, PilotAssist follows a vehicle ahead at a presettime interval. When only a steering wheel is shown, there is no vehicle ahead within a reasona-ble distance.
NOTE
When the symbol in the instrument panel shows two vehicles, ACC is following thevehicle ahead at a preset time interval. When only one vehicle is shown, there is no vehicle ahead within a reasonable dis-tance.
Controls for setting a time interval.
Reduce the time interval
Increase the time interval
Distance indicator
–Press the (1) or (2) button to decrease or increase the time interval.
> The distance indicator (3) shows the current time interval. In order to help your vehicle follow the vehicle ahead as smoothly and comfortably as possi-ble, Adaptive Cruise Control allows the timeinterval to vary noticeably in certain situations.At low speeds, when the distance to the vehi-cle ahead is short, Adaptive Cruise Controlincreases the time interval slightly.
NOTE

The greater the vehicles' speed, the greater the distance between them fora set time interval.
Only use the time intervals permittedby local traffic regulations.
If driver support does not seem torespond with a speed increase whenactivated, it may be because the timeinterval to the vehicle ahead is shorterthan the set time interval.
WARNING
Only use a time interval suitable for the current traffic conditions.
The driver should be aware that shorttime intervals give them limited time toreact and act to any unforeseen trafficsituation.

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Related information
Driver support systems (p. 268)
Adaptive Cruise Control
* (p. 278)
Pilot Assist
* (p. 287)
Distance Alert
* (p. 273)
Head-up display
* (p. 139)
Auto-hold braking with driver support
The driver support functions Adaptive Cruise Control * and Pilot Assist * have a special brake
function in slow traffic and while stationary.
Braking function in slow traffic and at a standstill
In slow-moving, stop-and-go traffic or when stopped at a traffic light, driving will resumeautomatically if the vehicle is stopped for lessthan approx. 3 seconds. If it takes more than 3seconds for the vehicle ahead to begin movingagain, the driver support function will go intostandby mode and the auto-hold brake func-tion will activate.
–The function can be reactivated by:
Pressing the
button on the steer-
ing wheel keypad.
Pressing the accelerator pedal.
> The function will resume following the vehicle ahead if it begins to move within approx. 6 seconds.
WARNING
A noticeable increase in speed may follow when the speed is resumed with the
steering wheel button.
WARNING
The driver support system only issues a warning for obstacles detected by its radarsensor – thus, a warning may come after adelay or not at all.
Never wait for a warning or assistance. Apply the brakes when necessary.
NOTE
Driver support can keep the vehicle sta- tionary for no more than 5 minutes – afterthat time the parking brake is applied andthe function is deactivated. The parking brake must be released before driver support can be reactivated.

DRIVER SUPPORT
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Deactivation of the Auto-hold brake function
In certain situations, auto-hold will be deacti- vated when the vehicle is at a standstill andthe function 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 vehiclestationary. 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 R
positions
the driver puts the function in standby mode.
Auto Activate Parking BrakeIn certain situations, the parking brake will beapplied to keep the vehicle at a standstill. This occurs if the function is keeping the vehi- cle stationary using the brakes and:
the driver opens the door or unbuckleshis/her seat belt
the function has kept the vehicle at astandstill for more than approx. 5 minutes
the brakes overheat
the driver switches off the engine man-ually.
Related information
Driver support systems (p. 268)
Adaptive Cruise Control
* (p. 278)
Pilot Assist
* (p. 287)
Brake functions (p. 403)
Drive mode for driver support The driver can choose different drive modes to determine how driver support shouldmaintain a time interval to the vehicle ahead.
Settings are made using the
DRIVE MODE
controls. Select one of the following:

Pure - Driver support will focus on provid-
ing good fuel economy, which will increase the time interval to the vehicleahead.

Hybrid - Driver support will focus on fol-
lowing the set time interval to the vehicle ahead as smoothly as possible.

Power - Driver support will focus on fol-
lowing the set time interval to the vehicle ahead more exactly, which could meanfaster acceleration and heavier braking.
Related information
Driver support systems (p. 268)
Drive modes (p. 419)
Setting time interval to the vehicle ahead(p. 299)

DRIVER SUPPORT
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Curve Speed Assist (CSA) *44
Curve Speed Assist can help the driver
reduce speed before sharp turns if the preset speed for the driver support function Adap- tive Cruise Control * or Pilot Assist * is deter-
mined to be too high.
This assessment is performed using informa- tion from map data in the vehicle's navigation system, Sensus Navigation *. After the turn,
the vehicle will resume the previously set speed.
As the function reduces thevehicle's speed, this symbolwill be displayed in the instru-ment panel.
The driver can cancel the function at any time by braking or using the accelerator pedal.
WARNING
The function is supplementary driver support intended to facilitate drivingand help make it safer – it cannot han-dle all situations in all traffic, weatherand road conditions.
The driver is advised to read all sec-tions in the Owner's Manual about thisfunction to learn of its limitations,which the driver must be aware ofbefore using the function.
Driver support functions are not a sub-stitute for the driver's attention andjudgment. The driver is always respon-sible for ensuring the vehicle is drivenin a safe manner, at the appropriatespeed, with an appropriate distance toother vehicles, and in accordance withcurrent traffic rules and regulations.
Drive modes
Cornering assistance varies depending on the selected drive mode. If drive mode cannot be selected, the function will use the
Comfortoption. In Dynamic mode, cornering will be
sporty, with slightly more powerful accelera- tion coming out of curves.
Related information
Driver support systems (p. 268)
Adaptive Cruise Control
* (p. 278)
Pilot Assist
* (p. 287)
Drive modes (p. 419)
44
This function is only available on some markets.