2018 VOLVO S90 Owner´s Manual

DRIVER SUPPORT
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* Option/accessory.351
•
signs partially or fully covered by frost, snow and/or dirt
• digital road maps 101
that are outdated, incor-
rect or do not contain speed information 102
.
NOTE
Certain types of bike carriers that are con- nected to the trailer socket may be interpre-ted as a connected trailer by the RSI function.In such cases, the instrument panel may indi-cate incorrect speed information.
NOTE
The function uses the vehicle's camera unit, which has some general limitations – see thesection "Camera unit limitations".
Related information
• Road Sign Information
* (p. 346)
Driver Alert Control
The Driver Alert Control (DAC) function is designed to help capture the driver becomeaware of erratic behavior, e.g. if the driver is dis-tracted or showing signs of fatigue.
The objective of DAC is to detect slowly deterio- rating driving behavior and is primarily intended tobe used on major roads. The function is notintended for use in city traffic. DAC is activated when the vehicle's speed exceeds 65 km/h (40 mph) and remains activeas long as speeds are above 60 km/h (37 mph).
A camera monitors the traffic lane's marker lines and compares the direction of the road with thedriver's movements of the steering wheel.
If the driving behavior becomes noticeably erratic, the driver willbe alerted by this symbol in theinstrument panel and the mes- sage
Time for a break
soon?.
If driving behavior does not improve but instead becomes even more erratic, the driver will bealerted by the same symbol in the instrument panel, an audible signal and the message
Time
for a break.
If the Rest Stop Guidance function is activated
in Sensus Navigation * when the Time for a
break warning is given, suggestions will also be
provided for suitable places to take a break.
101 Vehicles equipped with Sensus Navigation.
102 Map data and speed information is not available for all areas.

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DRIVER SUPPORT
352The warnings will be repeated after a short time if driving behavior does not improve.
WARNING
•
The Driver Alert Control function is sup- plementary driver support intended tofacilitate driving and help make it safer –it cannot handle all situations in all traffic,weather and road conditions.
• Driver Alert Control must not be used toextend a period of driving. The drivershould plan in breaks at regular intervalsand make sure they are well rested.
• Driver Alert Control is not a substitute forthe driver's attention and judgment. Thedriver is always responsible for ensuringthe vehicle is driven in a safe manner, atthe appropriate speed, with an appropri-ate distance to other vehicles, and inaccordance with current traffic rules andregulations.
WARNING
An alarm from Driver Alert Control should be taken very seriously since a sleepy driver isoften not aware of their own condition. If the alarm sounds or you feel fatigued:
• Stop the vehicle safely as soon as possi- ble and rest.
Studies have shown that it is just as danger- ous to drive while tired as it is to drive underthe influence of alcohol or other stimulants.
Related information
• Activating/deactivating Driver Alert Control (p. 352)
• Selecting guidance to a rest area if theDriver Alert Control warning has been given(p. 353)
• Driver Alert Control limitations (p. 353)
Activating/deactivating Driver AlertControl
The Driver Alert Control (DAC) function can be activated/deactivated.
On/OffTo change DAC settings: 1. Tap
Settings in the center display's Top
view.
2. Select
My CarIntelliSafeDriver Alert
Control.
3. Select/deselect
Alertness Warning to acti-
vate/deactivate DAC.
Related information
• Driver Alert Control (p. 351)

DRIVER SUPPORT
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353
Selecting guidance to a rest area ifthe Driver Alert Control warning hasbeen givenThe
Rest Stop Guidance function can be
switched on or off.
When the guide is activated, it will automatically display suggestions for a suitable place to take abreak if the DAC warning is given. To select
Rest Stop Guidance:
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. 351)
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 – whenusing the Pilot Assist function – resulting inthe driver not getting a warning from DAC. It is therefore very important to always stop and take a break at the slightest sign of fati-gue, regardless of whether the DAC functionhas issued a warning or not.
NOTE
The function uses the vehicle's camera unit, which has some general limitations – see thesection "Camera unit limitations".
Related information
• Driver Alert Control (p. 351)
Lane Keeping Aid
Lane Keeping Aid (LKA 103
) is designed to
actively steer the vehicle on freeways, highways and other major roads to help the driver reducethe risk of the vehicle unintentionally veering outof the lane.
Lake Keeping Assistance 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 unavailable and go into standby mode. The function willbecome available again when the road becomessufficiently wide.
A camera monitors the road/traffic lane's marker lines.
103 Lane Keeping Aid

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DRIVER SUPPORT
354
Lane Keeping Aid steers the vehicle back into its lane.
Lane Keeping Aid alerts the driver using vibrations in the steering wheel104
.
Depending on the settings used, Lane Keeping Aid functions in different ways:
• With
Assist105
activated: When the vehicle
approaches a lane marker line, LKA will actively steer the vehicle back into the laneusing light pressure on the steering wheel.
• With
Warning105
activated: If the vehicle is
about to move over a lane marker line, the driver will be alerted by vibrations in thesteering wheel.
NOTE
When the direction indicator is activated, the Lane Keeping Aid does not provide any warn-ing or intervene with steering.
WARNING
• The Lane Keeping Aid function is supple- mentary driver support intended to helpimprove driving safety – it cannot handleall situations in all traffic, weather androad conditions.
• The function is not a substitute for thedriver's attention and judgment. The driveris always responsible for ensuring thevehicle is driven in a safe manner, at theappropriate speed, with an appropriatedistance to other vehicles, and in accord-ance with current traffic rules and regula-tions.
104
The steering wheel vibrations vary. The more time the vehicle is over the lane marker line, the longer the vibrations.
105 See "LKA assistance options" under "Activating/deactivating Lane Keeping Aid".

DRIVER SUPPORT
355
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 inside curve,Lane Keeping Aid will not provide steering assis-tance or alerts.
Related information
•Steering assistance with Lane Keeping Aid(p. 355)
• Lane Keeping Aid limitations (p. 356)
• Activating/deactivating Lane Keeping Aid(p. 356)
• Selecting type of assistance for Lane Keep-ing Aid (p. 356)
• Lane Keeping Aid symbols and messages(p. 358) •
Lane Keeping Aid symbols in the instrumentpanel (p. 360)
Steering assistance with LaneKeeping Aid The LKA 106
steering assistance function only
functions if the driver's hands are on the steering wheel, which the system continuously monitors.
If the driver does not keep his/her hands on the steeringwheel, the driver display showsthis symbol combined with amessage, which prompts thedriver to actively steer the car:
•Lane Keeping Aid – Apply steering
If the driver does not begin to steer the vehicle, the symbol will be displayed again, accompaniedby an audible signal and this message:
•
Lane Keeping Aid – Standby until
steering applied
If the driver still does not begin to steer the vehi- cle, LKA 106
will go into standby mode. The func-
tion will remain unavailable until the driver begins actively steering the vehicle again.
Related information
• Lane Keeping Aid (p. 353)
106
Lane Keeping Aid

DRIVER SUPPORT
356
Activating/deactivating LaneKeeping Aid The Lane Keeping Aid (LKA107
) function can be
switched On or Off.
On/OffPress the Lane Keeping Aidbutton in the center display's Function view.
• GREEN button indicator light - LKA is acti- vated.
• GRAY button indicator light - LKA is deacti-vated.
Related information
•Lane Keeping Aid (p. 353)
Selecting type of assistance forLane Keeping Aid
The driver can determine what types of assis- tance LKA 108
should provide if the vehicle veers
from its lane.
1. Select SettingsMy CarIntelliSafe in
the center display's Top view.
2. Under
Lane Keeping Aid Mode, select
what assistance LKA should provide:
•
Assist the driver will receive steering
assistance but no warning.
•
Both - the driver will receive both steering
assistance and a warning.
•
Warning - the driver will only receive a
warning.
Related information
• Lane Keeping Aid (p. 353)
Lane Keeping Aid limitations
In certain demanding driving conditions, Lane Keeping Aid may not be able to properly assistthe driver. In these situations, it is recommendedthat the function be deactivated.
Examples of such situations include:
• road work
• winter driving conditions
• poor road surfaces
• a very sporty driving style
• bad weather with reduced visibility
• roads with indistinct or no lane markings
• sharp edges or lines other than the lane's side markings
• when the power steering works at reducedpower - e.g. during cooling due to overheat-ing (see section "Speed-dependent steeringforce").
NOTE
The function uses the vehicle's camera unit, which has some general limitations – see thesection "Camera unit limitations".
107
Lane Keeping Aid
108 Lane Keeping Aid

DRIVER SUPPORT
357
Related information
•Lane Keeping Aid (p. 353)
• Speed-dependent steering wheel resistance (p. 262)

DRIVER SUPPORT
358
Lane Keeping Aid symbols andmessages
A number of symbols and messages related to Lane Keeping Aid LKA 109
may be displayed in
the instrument panel.
Some examples of symbols and messages are shown in the table below.
SymbolMessageMeaning
Driver support system Reduced functionality Service requiredThe system is not functioning as intended. Contact a workshop ‒ an authorized Volvo work-
shop is recommended.
Windscreen sensor Sensor blocked, see Owner's manualThe camera's ability to detect the lane in front of the vehicle is reduced.
Lane Keeping Aid Apply steeringLKA's steering assistance is disabled when the driver's hands are not on the wheel. Follow the instructions and steer the vehicle.
Lane Keeping Aid Standby until steering appliedLKA will go into standby mode until the driver begins steering the vehicle again.
109 Lane Keeping Aid