2020 VOLVO S90 warning

DRIVER SUPPORT
* Option/accessory.
340
Driver Alert Control
The Driver Alert Control (DAC) function is designed to help alert the driver to erraticbehavior, e.g. if the driver is distracted orshowing signs of fatigue.
The objective of DAC is to detect slowly dete- riorating driving behavior and is primarilyintended to be used on major roads. The func-tion is not intended for use in city traffic. DAC is activated when the vehicle's speed exceeds 65 km/h (40 mph) and remainsactive as long as speeds are above 60 km/h(37 mph).
DAC detects the vehicle's position in the traffic lane.
A camera monitors the traffic lane's marker lines and compares the direction of the roadwith the driver's movements of the steeringwheel.
The vehicle is moving erratically in the lane.
If driving behavior becomes considerably erratic, thedriver will be alerted by thissymbol in the instrumentpanel, an audible signal and the message
Time for a
break.
If the vehicle is equipped with Sensus Navigation * and the Rest Stop Guidancefunction is activated, suggestions will also be provided for suitable places to take a break. The warning will be repeated after a short time if driving behavior does not improve.
WARNING
Driver Alert Control must not be used to extend a period of driving. The drivershould plan in breaks at regular intervalsand make sure they are well rested.
WARNING
An alarm from Driver Alert Control should be taken very seriously since a sleepy driveris often not aware of their own condition. If the alarm sounds or you feel fatigued:
Stop the vehicle safely as soon as pos- sible and rest.
Studies have shown that it is just as dan- gerous to drive while tired as it is to driveunder the influence of alcohol or otherstimulants.

DRIVER SUPPORT
* Option/accessory.341
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.
Related information
Driver support systems (p. 266)
Activating or deactivating Driver AlertControl (p. 341)
Selecting guidance to a rest area if theDriver Alert Control warning has beengiven (p. 341)
Driver Alert Control limitations (p. 342)
Activating or deactivating Driver Alert Control
The Driver Alert Control (DAC) function can be activated or deactivated.
1. Tap Settings in the center display's Top
view.
2. Select
My CarIntelliSafeDriver
Alert Control.
3. Select/deselect
Alertness Warning to
activate/deactivate the function.
Related information
Driver Alert Control (p. 340)
Driver Alert Control limitations (p. 342)
Selecting guidance to a rest area if the Driver Alert Control warninghas been given
In vehicles equipped with Sensus Navigation *, the driver can activate a guide
that can automatically suggest a suitable rest stop if the Driver Alert Control (DAC) warningis given.
The Rest Stop Guidance function can be
switched on or off. 1. Tap
Settings in the center display's Top
view.
2. Select
My CarIntelliSafeDriver
Alert Control.
3. Select/deselect
Rest Stop Guidance to
activate/deactivate the function.
Related information
Driver Alert Control (p. 340)
Driver Alert Control limitations (p. 342)

DRIVER SUPPORT
* Option/accessory.
342
Driver Alert Control limitations
Driver Alert Control (DAC) functionality may be reduced in certain situations.
In certain situations, the system may provide a warning even if it has not detected a change indriving behavior, e.g.: in strong crosswinds
on grooved road surfaces.
WARNING
In certain cases, driving behavior might not be affected despite the driver's fatigue – when using the Pilot Assist
* function –
resulting in the driver not getting a warning from DAC. It is therefore very important to always stop and take a break at the slightest signof fatigue, regardless of whether the func-tion has issued a warning or not.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Related information
Driver Alert Control (p. 340)
Camera/radar sensor limitations (p. 307)
Lane Keeping Aid
Lane Keeping Aid (LKA 85
) is designed to
actively steer the vehicle on freeways, high- ways and other major roads to help the driverreduce the risk of the vehicle unintentionallyveering out of the lane.
Lake Keeping Aid steers the vehicle back into the lane and/or alerts the driver using vibra-tions in the steering wheel. Lane Keeping Aid is active at speeds between 65–200 km/h (40–125 mph) on roads withclearly visible traffic lane marker lines. On narrow roads, the function may be unavail- able and go into standby mode. The functionwill become available again when the roadbecomes sufficiently wide.
A camera monitors the road/traffic lane's marker lines.
Lane Keeping Aid steers the vehicle back into its lane.
85 Lane Keeping Aid

DRIVER SUPPORT
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343
Lane Keeping Aid alerts the driver using vibrations in the steering wheel.
Depending on the settings used, Lane Keep- ing Aid functions in different ways:
Assist enabled: When the vehicle
approaches a lane marker line, the func- tion will actively steer the vehicle back intothe lane using light pressure on the steer-ing wheel.

Warning enabled: If the vehicle is about
to move over a lane marker line, the driver will be alerted by vibrations in the steeringwheel.
There is also an option for activating steeringassistance and alerts at the same time.
NOTE
When the direction indicators/turn signals are activated, the Lane Keeping Aid doesnot provide any warning or intervene withsteering.
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.
Lane Keeping Aid does not intervene
Lane Keeping Aid does not intervene in sharp inside curves.
In certain cases, such as when a turn signal is used or when "straightening out" an insidecurve, Lane Keeping Aid will not provide steer-ing assistance or alerts.
Hands on the steering wheelSteering assistance with Lane Keeping Aidonly functions if the driver's hands are on thesteering wheel, which the system continu-ously monitors.
If the driver's hands are noton the steering wheel, anaudible signal will be givenand a message will instructthe driver to actively steer thevehicle:
Lane Keeping Aid – Apply steering

||
DRIVER SUPPORT
344If the driver does not begin to steer the vehi- cle, the function will go into standby modeand this message will be displayed:

Lane Keeping Aid – Standby until
steering applied
The function will then be unavailable until the driver begins actively steering the vehicleagain.
Related information
Driver support systems (p. 266)
Activating or deactivating Lane KeepingAid (p. 344)
Lane Keeping Aid limitations (p. 345)
Lane Keeping Aid symbols and messages(p. 346)
Activating or deactivating Lane Keeping Aid
The Lane Keeping Aid (LKA 86
) function is
optional – the driver can choose to have the function activated or deactivated.
Activate or deactivate the function using this button inthe center display's Functionview.
GREEN button indicator light – the func- tion is activated.
GRAY button indicator light – the functionis deactivated.
Related information
Lane Keeping Aid (p. 342)
Selecting type of assistance for LaneKeeping Aid (p. 344)
Lane Keeping Aid limitations (p. 345)
Selecting type of assistance for Lane Keeping Aid
The driver can determine what types of assis- tance Lane Keeping Aid (LKA 87
) should pro-
vide if the vehicle veers from its lane.
1. Select SettingsMy CarIntelliSafein the center display's Top view.
2. Under
Lane Keeping Aid Mode, select
what assistance the function should pro- vide:

Assist the driver will receive steering
assistance but no warning.

Both – the driver receives steering
assistance and a warning through vibrations in the steering wheel.

Warning – the driver is only warned
through vibrations in the steering wheel.
Related information
Lane Keeping Aid (p. 342)
86
Lane Keeping Aid
87 Lane Keeping Aid

DRIVER SUPPORT
348
Lane Keeping Aid display Lane Keeping Aid (LKA90
) uses symbols in
the instrument panel for various situations.
Some examples of symbols and descriptions of the situa-tions in which they mightappear are provided below.
Available
Available ‒ the marker lines in the symbol are
WHITE.
Lane Keeping Aid is able to detect one or both of the traffic lane's side marker lines.
Unavailable
Unavailable ‒ the marker lines in the symbol are
GRAY.
Lane Keeping Aid is unable to detect the lane marker lines, the vehicle's speed is too low orthe road is too narrow.
Steering/warning indicator
Steering/warning ‒
the marker lines in the symbol
are COLORED.
Indicates that the Lane Keeping Aid system is alerting the driver and/or attempting to steerthe vehicle back into the lane.
Related information
Lane Keeping Aid (p. 342)
Lane Keeping Aid limitations (p. 345)
90
Lane Keeping Aid

DRIVER SUPPORT
* Option/accessory.349
Steering assistance at risk of collision
The
Collision avoidance assistance function
can help the driver reduce the risk of the vehi- cle leaving its lane unintentionally and/or col-liding with another vehicle or obstacle byactively steering the vehicle back into its laneand/or swerving.
The function consists of these sub-functions: Run-Off Mitigation with steering assis- tance
Steering assistance during collision risksfrom oncoming traffic
Steering assistance during collision risks from behind
*
After the system has automatically intervened, this text message will appear in the instru-ment panel:
Collision avoidance assistance –Automatic intervention
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.
NOTE
It is always the driver who must decide how much the vehicle should be in control– the vehicle can never take command.
Related information
Driver support systems (p. 266)
Activating or deactivating steering assis- tance during collision risks (p. 350)
Run-Off Mitigation with steering assis-tance (p. 350)
Steering assistance during collision risksfrom oncoming traffic (p. 351)
Steering assistance during collision risks from behind
* (p. 352)
Steering assistance during collision risks limitations (p. 353)
Symbols and messages for steering assis-tance during collision risks (p. 354)

DRIVER SUPPORT
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351
Steering assistance with braking
Intervention with steering assistance and braking.
Braking intervention assists in situations where steering assistance alone is not suffi-cient. Braking force is automatically adaptedaccording to the situation at the moment thevehicle begins to run off the road. The function is active at speeds between 65-140 km/h (40-87 mph) on roads withclearly visible traffic lane markings/lines. The system uses a camera to monitor the edges of the road and the painted side markerlines. If the vehicle is about to cross the edgeof the road, the function will attempt to steerthe vehicle back onto the road. If this is notsufficient to keep the vehicle on the road, thebrakes will also be applied. However, the function will not provide either
steering assistance or braking if the turn signal is used. The function will also not be activated if it detects that the driver is actively operatingthe vehicle.
Related information

Steering assistance at risk of collision(p. 349)
Steering assistance during collision riskslimitations (p. 353)
Steering assistance during collision risks from oncomingtraffic Steering assistance has several sub-func- tions. Steering assistance during collisionrisks from oncoming traffic can help a dis-tracted driver who has not noticed that thevehicle is veering out of the lane.
The function provides assistance by swerving your vehicle back into your own lane.
Oncoming vehicles
Own vehicle
When steering assistance is activated, colli- sion warning for driver support will also beactivated. However, the brake pedal pulsa-tions that are part of collision warning will notbe activated.