2018 VOLVO S90 steering

DRIVER SUPPORT
332
City Safety and delayed evasivemaneuvers City Safety can assist the driver by automatically braking the vehicle when it is not possible toavoid a collision by steering alone.
City Safety assists the driver by periodically attempting to predict possible "escape routes" tothe sides of the vehicle in the event a slow-mov-ing or stationary vehicle were to be detected at alate stage.
Your vehicle (1) cannot detect any potential escape routes for veering away from the vehicle ahead (2) andmay therefore apply the brakes at an earlier stage.
Own vehicle
Slow-moving/stationary vehicles
City Safety will not intervene to automatically apply the brakes if it is possible for the driver toavoid a collision by steering the vehicle. However, if City Safety determines that an eva-sive maneuver would not be possible due to traf-fic in the adjacent lane(s), the function can assistthe driver by automatically starting to apply thebrakes at an earlier stage.
WARNING
•
The possibility of City Safety predicting a certain situation is supplementary driversupport intended to improve driving safety– it cannot handle all situations in all traf-fic, weather and road conditions.
• City Safety is not a substitute for the driv-er's attention and judgment. The driver isalways responsible for ensuring the vehi-cle 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.
Limitations of City Safety during evasive maneuvers
NOTE
The function uses the vehicle's camera unit, which has some general limitations – see thesection "Camera unit limitations".
NOTE
The function uses the vehicle's radar unit, which has some general limitations – see thesection "Radar unit limitations".
Related information
•
City Safety
™ (p. 324)

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City Safety limitations
City Safety functionality may be reduced in cer- tain situations.
Surroundings
Low objects
Hanging objects, such as flags for overhanging loads or accessories such as auxiliary lights orfront protective grids that extend beyond theheight of the hood, may limit City Safety function-ality.
Slippery road conditions
The extended braking distance on slippery roads may reduce City Safety's capacity to help avoid acollision. In these types of situations, the Anti-lock Braking System and Electronic Stability Con- trol (ESC 73
) will help provide optimal braking
power with maintained stability.
Backlighting
The visual warning signal in the windshield may be difficult to detect in bright sunlight, if there arereflections, or if the driver is wearing sunglassesor not looking straight ahead.
Heat
If the temperature in the passenger compartment is high due to e.g. bright sunlight, the visual warn-ing signal in the windshield may be temporarilydisabled.
Camera and radar sensor's field of vision
The camera's field of vision is limited and in cer- tain situations, it may be unable to detect pedes-trians, large animals, cyclists or vehicles, or it maydetect them later than expected. Vehicles that are dirty may be detected later than clean vehicles, and in dark conditions, motorcy-cles may be detected late or not at all. If a text message displayed in the instrument panel indicates that the camera/radar sensor isobstructed, it may be difficult for City Safety todetect pedestrians, large animals, cyclists, vehi-cles or lane markings in front of the vehicle. CitySafety functionality may therefore be reduced. Text messages may not be displayed for all situa- tions in which the windshield sensors areblocked. The driver must therefore always keepthe windshield in front of the camera/radar sen-sor clean.
CAUTION
Maintenance and replacement of City Safety components may only be performed by aworkshop – an authorized Volvo workshop isrecommended.
Driver intervention
Backing up
City Safety is temporarily deactivated when the vehicle is backing up.
Low speed
City Safety is not activated at very low speeds under 4 km/h (3 mph). The system will thereforenot intervene in situations in which your vehicle isapproaching another vehicle very slowly, such aswhen parking.
Active driver
Action by the driver always has priority. City Safety will therefore not react or will react at alater stage with a warning or intervention in situa-tions in which the driver is clearly steering andoperating the accelerator pedal, even if a collisionis unavoidable. An active and aware driving style may therefore delay collision warnings and intervention in order to minimize unnecessary warnings.
73 Electronic Stability Control

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City Safety messages A number of messages related to City Safety may be displayed in the instrument panel.
Some examples of symbols and messages are shown in the table below.
MessageMeaning
City Safety Automatic interventionWhen City Safety is braking or has activated the automatic braking function, one or more symbols may illuminate in the instrument panel and a text message may be displayed.
City Safety Reduced functionality Service requiredThe system is not functioning as intended. Contact a workshop ‒ an authorized Volvo workshop is recommended.
A text message can be erased by briefly pressing the
button in the center of the right-side
steering wheel keypad. If the message persists: Contact a workshop ‒ an
authorized Volvo workshop is recommended.
Related information
• City Safety
™ (p. 324)

DRIVER SUPPORT
* Option/accessory.341
BLIS messages
A number of messages related to BLIS 81
may
be displayed in the instrument panel.
Some examples of symbols and messages are shown in the table below.
MessageMeaning
Blind spot sensor Service requiredThe system is not functioning as intended. Contact a workshop ‒ an authorized Volvo workshop is recommended.
Blind spot system off Trailer attachedBLIS and CTA have been deactivated because a trailer has been connected to the vehicle's electrical system.
A text message can be erased by briefly pressing the
button in the center of the right-side
steering wheel keypad. If the message persists: Contact a workshop ‒ an
authorized Volvo workshop is recommended.
Related information
• BLIS
* (p. 337)
81
Blind Spot Information

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* Option/accessory.345
Cross Traffic Alert messages
A number of messages related to CTA 90
may be
displayed in the instrument panel.
Some examples of symbols and messages are shown in the table below.
MessageMeaning
Blind spot sensor Service requiredThe system is not functioning as intended. Contact a workshop ‒ an authorized Volvo workshop is recommended.
Blind spot system off Trailer attachedBLIS and CTA have been deactivated because a trailer has been connected to the vehicle's electrical system.
A text message can be erased by briefly pressing the
button in the center of the right-side
steering wheel keypad. If the message persists: Contact a workshop ‒ an
authorized Volvo workshop is recommended.
Related information
• Cross Traffic Alert
* (p. 342)
90
Cross Traffic Alert

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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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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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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".