2017 VOLVO S90 Owner´s Manual

DRIVER SUPPORT
319
If the driving pattern becomes noticeably erratic, the driver willbe alerted by an audible signal and
Driver Alert Time for a
break will appear in the instru-
ment panel along with a sym- bol.
The warning will be repeated if the driving patterndoes not change.
WARNING
• DAC is not intended to extend the dura- tion of driving. Always plan breaks at reg-ular intervals to help remain alert.
• A warning from DAC should not beignored. A driver may not be aware ofhow fatigued he/she has become.
• In certain cases, fatigue may not affectthe driver

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Driver Alert Control limitations
Driver Alert Control (DAC) may have limited or reduced functionality in certain situations.
WARNING
A driving pattern may not change despite driver fatigue, e.g., if a function such as PilotAssist is being used, which means that DACwill not provide a warning. It is always veryimportant to stop and take a break at the firstsign of driver fatigue, even if the system hasnot provided a warning.
In certain situations, DAC may provide warnings even if the driver

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321
Driving lane assistance provides vibrations in the steer- ing wheel7
.
Depending on the settings used, Lane Keeping Aid functions in different ways:
• Assistance type
Steering8
is activated: when
the vehicle approaches a traffic lane marker line, LKA will provide active steering assis-tance to help steer it back into the lane.
• Assistance type
Warning8
is activated: if the
vehicle is moving out of its traffic lane, an audible signal and/or vibrations in the steer-ing wheel will be provided.
NOTE
If the turn signal is used, Lane Keeping Aid will not provide an alert or steering assis-
tance.
WARNING
Lane Keeping Aid is only intended to assist the driver and does not function in all driving,weather, traffic or road conditions. As the driver, you have full responsibility for operating the vehicle in a safe manner.
Steering assistanceIn order for LKA's steering assistance to function, the driver's hands must be on the steering wheel,which the system monitors continuously.
If the driver's hands are not onthe steering wheel, this symbolwill illuminate in the instrumentpanel and the following mes-sage will be displayed:
•Lane Keeping Aid – Apply steering
If the driver does not begin to steer the vehicle, the symbol will illuminate again, an audible signal will sound and the following message will be dis-played:
•
Lane Keeping Aid – Standby until
steering applied
If the driver still does not begin to steer the vehi- cle, LKA will go into standby mode. The functionwill not become available again until the driveractively steers the vehicle
Traffic lane assistance does not react
The traffic lane assistance system does not intervene in sharp curves
In certain cases, such as during active driving or if the turn signal is used, the traffic lane system will not react if the vehicle crosses a lane marker
line.
7 The level of vibrations varies; the farther the vehicle is over a lane marker line, the greater the number of vibrations:
8 See "Type of assistance" in the article "Activating/deactivating Lane Keeping Aid".

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LimitationsIn certain demanding driving situations, the driv- ing lane assistance functions may not be able toassist the driver. In these situations, it may beadvisable to turn the function off. Examples of such situations: •road construction
• winter driving conditions
• poor road surfaces
• a very active driving style
• bad weather with reduced visibility
• edges or lines other than the lane's marker lines
• roads with indistinct or no lane marker lines
The driving lane assistance function use the vehi-cle's camera, which has general limitations. Seethe article "Camera limitations."
Related information
• Activating/deactivating Lane Keeping Aid(LKA) (p. 322)
• Camera limitations (p. 293)
• Run-off Mitigation (p. 325)
Activating/deactivating Lane Keeping Aid (LKA) LKA can be activated/deactivated.
Activating/deactivating
The function can be activated/deactivated in the center display's Function view.
–Tap Lane Keeping Aid.
> LKA is activated (GREEN indicator light in the button), or is deactivated (GRAY indi- cator light in the button).
Type of warningChoose the type of warning that the driver willreceive if the vehicle starts to leave its drivinglane. 1. Tap
Settings in the center display's Top
view.
2. Tap
My CarIntelliSafeLane
Assistance. 3.
Under
Lane Keeping Aid Warning
Feedback, select:
•
Sound: an audible warning signal will be
provided
•
Vibrations: the driver will be warned by
vibrations in the steering wheel
Type of assistanceSelect the type of assistance LKA should provide: 1. Tap
Settings in the center display's Top
view.
2. Tap
My CarIntelliSafeLane
Assistance.
3. Under
Lane Keeping Aid Assistance
Mode, select:
•
Steering: the system will provide steering
assistance but no warning.
•
Both: the system will provide steering
assistance and warning
•
Warning: the system will provide warning
but no steering assistance
Related information
• Driving lane assistance (p. 320)
• Driving lane assistance symbols and mes- sages (p. 323)

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Driving lane assistance symbols and messages
A number of symbols and messages relating to Lane Keeping Aid (LKA) may appear in theinstrument panel.
Symbols in the instrument panelThe driving lane assistance systems use a symbol in theinstrument panel in differentsituations.
Several examples of the symbol's appearance will be given here:
Available
When the driving lane assistance systems are available,
the marker lines in the symbol will be white.
LKA are monitoring the driving lane's marker line(s).
Not available
When the driving lane assistance systems are not avail-
able, the marker lines in the symbol will be gray
This is because LKA cannot monitor (detect) the driving lane's marker line(s) or the vehicle'sspeed is too low or the road is too narrow.
Steering/warning indicator
Steering/warning: the side marker lines in the symbol will be colored
LKA indicates that the system is warning and/or attempting to steer the vehicle back into its lane.

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Symbols and messagesThe following table lists several LKA-related symbols and messages.
SymbolMessage Explanation
Driver support system Reduced functionality Service requiredThe system is not functioning properly. Contact a trained and qualified Volvo service techni- cian.
Windscreen sensor Sensor blocked, see Owner's manualThe camera's functionality is limited.
Lane Keeping Aid Apply steeringLKA's steering assistance does not function if the driver's hands are not on the steering wheel. Steer the vehicle actively.
Lane Keeping Aid Standby until steering appliedLKA's steering assistance is in standby mode until the driver actively steers the vehicle.
A text message can be erased by briefly pressing the O button on the right-side steering wheel
keypad. If the message recurs, contact a trained and authorized Volvo service technician orretailer.Related information
• Driving lane assistance (p. 320)
• Activating/deactivating Lane Keeping Aid(LKA) (p. 322)

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Run-off Mitigation
Run-off Mitigation is designed to assist the driver by helping return the vehicle to its trafficlane if it is about to go off the road.
Run-off Mitigation is active at speeds between 40–87 mph (65–140 km/h) 9
on roads with
clearly marked edges or side marker lines .
Run-off Mitigation uses a camera to monitor the edges of a road and its side marker lines. If thevehicle is about to cross the edge of the road orside marker line, Run-off Mitigation will attemptto actively steer the vehicle back onto the road. Ifthe attempt to steer the vehicle is not sufficient,the brakes will also be applied. Run-off Mitigation does not provide steering or braking assistance if a turn signal is being used.If the function detects that the vehicle is beingdriven actively, Run-off Mitigation activation maybe delayed for a short time. The function has two activation levels: • Steering assistance only
• Steering assistance and braking
Run-off Mitigation
with steering assistance
only
Run-off Mitigation provides steering assistance
Run-off Mitigation with steering assistance
and braking
Run-off Mitigation provides steering assistance and braking
Braking is triggered in situations where steering assistance may not be sufficient. Braking effect ismodulated automatically depending on the situa-tion when the vehicle begins to run off the road.
SettingsRun-off Mitigation can be activated/deactivatedby pulling down the center display's Top view andnavigating to:
SettingsMy CarIntelliSafeLane
Assistance
To activate Run-off Mitigation:
• Select (tap) the box for
Run-off Mitigation,Assistance in case of road departure.
9
Always observe posted speed limits.

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326 The setting selected when the engine was switched off will be used the next time theengine is started.
LimitationsIn certain situations, it may be difficult for Run-offMitigation to assist the driver. In such cases, it isadvisable to deactivate the function. Examples of these situations include:
• road construction
• winter driving conditions
• poor road surfaces
• narrow roads
• a very active driving style
• bad weather with reduced visibility
• edges or lines other than the lane's marker lines
• roads with indistinct or no lane marker lines
The Run-off Mitigation function use the vehicle'scamera, which has general limitations. See thearticle "Camera limitations".
WARNING
• Run-off Mitigation is only intended to assist the driver and does not function inall driving, weather, traffic or road condi-tions.
• This function cannot detect barriers, railsor similar obstructions at the side of aroad or traffic lane.
• As the driver, you have full responsibilityfor operating the vehicle in a safe man-ner.
Related information
•
Run-off Mitigation
* symbols and messages
(p. 327)
• Driving lane assistance (p. 320)
• Camera limitations (p. 293)