2019 VOLVO S90 TWIN ENGINE warning
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Rear Collision Warning
The Rear Collision Warning (RCW) function canhelp the driver avoid rear-end collisions fromvehicles approaching from behind.
RCW is automatically activated each time theengine is started.
RCW can warn the driver of a potential collisionwith vehicles approaching from behind by rapidlyflashing the turn signals.
If, at a speed below 30 km/h (20 mph), the RCWfunction detects that the car is in danger of beinghit from behind, the seatbelt tensioners may ten-sion the front seatbelts and activate the WhiplashProtection System safety system.
Immediately before a collision from behind, RCWmay also activate the foot brake in order toreduce the forward acceleration of the car duringthe collision. However, the brakes will only beapplied if your vehicle is stationary. The brakeswill be immediately released if the acceleratorpedal is depressed.
Related information
Rear Collision Warning limitations (p. 346)
Whiplash Protection System (p. 46)
Rear Collision Warning limitations
In some situations, it may be difficult for RCW towarn the driver of a collision risk.
This may be the case if:
the vehicle approaching from the rear isdetected at a late stage
the vehicle approaching from the rearchanges lanes at a late stage
the vehicle approaching from the rear is mov-ing at a speed above 80 km/h (50 mph)
a trailer, bicycle holder or similar is con-nected to the vehicle's electrical system - theRCW function will then be automaticallydeactivated.
NOTE
In certain markets RCW does not warn withthe direction indicators due to local trafficregulations – in such cases, that part of thefunction is deactivated.
NOTE
The warning with direction indicators for RearCollision Warning is deactivated if the colli-sion warning distance in the City Safety func-tion is set to the lowest level "Late".
The seat belt tensioning and braking func-tions remain active.
Related information
Rear Collision Warning (p. 346)
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BLIS*
The BLIS69 function is designed to help provideassistance in heavy traffic with several lanesmoving in the same direction by helping thedriver to detect the presence of vehicles in the"blind spot" area behind and to the side of thevehicle.
BLIS is a driver support system designed to alertthe driver of:
vehicles in your "blind spot"
vehicles approaching rapidly in adjacentlanes.Location of BLIS indicator light.70
Indicator light
The BLIS button in the center display's Func-tion view is used to activate/deactivate thefunction.
BLIS overview
Blind spot zone
Rapidly approaching vehicle zone.
The BLIS function is active at speedsabove 10 km/h (6 mph).
The system is designed to react to:
vehicles passing your vehicle
vehicles that are rapidly approaching yourvehicle from behind.
When BLIS detects a vehicle in zone 1 or a rap-idly approaching vehicle in zone 2, an indicatorlight will illuminate in the relevant rearview mirrorand glow steadily. If the driver then uses the turnsignal on the side in which the warning has been
69Blind Spot Information Systems70Note: This illustration is general and details may vary depending on model.
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given, the indicator light will become brighter andbegin flashing.
NOTE
The light illuminates on the side of the vehiclewhere the system has detected the vehicle. Ifthe vehicle is passed on both sides simulta-neously, both lights come on.
WARNING
The BLIS function is supplementary driversupport intended to facilitate driving andhelp make it safer – it cannot handle allsituations in all traffic, weather and roadconditions.
The responsibility for changing lanessafely and using good judgment alwaysrests with the driver.
BLIS is not a substitute for the driver'sattention 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.
Related information
Activating/deactivating BLIS (p. 348)
BLIS limitations (p. 349)
Recommended maintenance for BLIS(p. 350)
BLIS messages (p. 351)
Activating/deactivating BLIS
The BLIS71 function can be activated/deacti-vated.
Location of BLIS indicator light.72
Indicator light
The BLIS button in the center display's Func-tion view is used to activate/deactivate thefunction.
–Tap the BLIS button in Function view.
> The BLIS indicator light shows the statusof the function: GREEN (on) or GRAY(off).
If BLIS is activated when the engine is started,the indicator lights in the rearview mirrors willflash once.
If BLIS is deactivated when the engine is turnedoff, it will remain off the next time the engine isstarted and the indicator lights will not illuminate.
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Related information
BLIS* (p. 347)
BLIS limitations
BLIS73 functionality may be reduced in certainsituations.
Keep the marked area clean (on both the left and rightsides of the vehicle)74.
Examples of limitations:
Dirt, ice and snow covering the sensors mayreduce functionality and prevent the systemfrom providing warnings.
The BLIS function is automatically deacti-vated if a trailer, bicycle holder or similar isconnected to the vehicle's electrical system.
For BLIS to function optimally, bicycle hold-ers, luggage racks or similar should not bemounted on the vehicle's towbar.
WARNING
BLIS does not work in sharp curves.
BLIS does not work when the vehicle isbeing reversed.
Related information
BLIS* (p. 347)
71Blind Spot Information72Note: This illustration is general and details may vary depending on model.73Blind Spot Information74Note: This illustration is general and details may vary depending on model.
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Recommended maintenance forBLIS
For optimal performance, it is important tokeep the areas in front of the sensors clean.
Do not attach any objects, tape or decals tothe surface of the sensors.
Keep the marked area clean (on both the left and rightsides of the vehicle)75.
The BLIS sensors are located on the inside ofeach of the rear fenders/bumpers and are alsoused by the Cross Traffic Alert (CTA) and RearCollision Warning functions.
CAUTION
Repair of BLIS and CTA components orrepainting of the bumper may only be per-formed by a workshop – an authorized Volvoworkshop is recommended.
Related information
BLIS* (p. 347)
Cross Traffic Alert* (p. 352)
Activating/deactivating Cross Traffic Alert(p. 353)
Cross Traffic Alert limitations (p. 353)
Recommended maintenance for CrossTraffic Alert (p. 354)
Cross Traffic Alert messages (p. 355)
Rear Collision Warning (p. 346)
75Note: This illustration is general and details may vary depending on model.
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Cross Traffic Alert*
CTA77 is a supplementary driver support system
to BLIS78 that is intended to help the driverdetect vehicles crossing behind the vehiclewhile backing up.
CTA overview.
CTA supplements BLIS by detecting traffic cross-ing from the side, e.g. when backing out of aparking space.
CTA is primarily designed to detect vehicles, butin certain cases can also detect pedestrians orsmaller objects such as bicycles.
CTA is only active when the vehicle is movingbackward or if reverse gear is engaged.
If CTA detects that something is approachingyour vehicle from the side:
an audible signal will sound from either theleft or right speaker, depending on whichside of your vehicle the object is approachingfrom.
an icon will illuminate in the PAS79 graphicon the screen.
an icon will appear in the Park Assist Cam-era's Top view.
Illuminated CTA icon in the PAS graphic80 on thescreen.
WARNING
The Cross Traffic Alert function is supple-mentary driver support intended to facili-tate driving and make it safer – it cannothandle all situations in all traffic, weatherand road conditions.
The responsibility for reversing the vehiclesafely and using good judgment alwaysrests with the driver.
Cross Traffic Alert 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.
Related information
Activating/deactivating Cross Traffic Alert(p. 353)
Cross Traffic Alert limitations (p. 353)
Recommended maintenance for CrossTraffic Alert (p. 354)
Cross Traffic Alert messages (p. 355)
77Cross Traffic Alert78Blind Spot Information79Park Assist System: Parking assistance with reversing sensors80Note: This illustration is general and details may vary depending on model.
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Examples of further limitations
Dirt, ice and snow covering the sensors mayreduce functionality and prevent the systemfrom providing warnings. For additional infor-mation, see the section "Recommendedmaintenance for Cross Traffic Alert".
CTA is automatically deactivated if a trailer,bicycle holder or similar is connected to thevehicle's electrical system.
For CTA to function optimally, bicycle hold-ers, luggage racks or similar should not bemounted on the vehicle's towbar.
Related information
Cross Traffic Alert* (p. 352)
Recommended maintenance for CrossTraffic Alert (p. 354)
Recommended maintenance forCross Traffic Alert
For optimal performance, it is important tokeep the areas in front of the sensors clean.
Do not attach any objects, tape or decals tothe surface of the sensors.
Keep the marked area clean (on both the left and rightsides of the vehicle)83.
The CTA sensors are located on the inside ofeach of the rear fenders/bumpers and are also
used by the BLIS84 and Rear Collision Warningfunctions.
CAUTION
Repair of BLIS and CTA components orrepainting of the bumper may only be per-formed by a workshop – an authorized Volvoworkshop is recommended.
Related information
Cross Traffic Alert* (p. 352)
BLIS* (p. 347)
Rear Collision Warning (p. 346)
83Note: This illustration is general and details may vary depending on model.84Blind Spot Information
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Road Sign Information*
The Road Sign Information (RSI86) function canhelp the driver observe speed-related roadsigns.
Examples of signs that can be detected87.
Example87 of registered speed information.
If the vehicle passes a speed limit sign, it will bedisplayed in the instrument panel and the head-up display*.
NOTE
In certain markets, the Road Sign Informationfunction (RSI) is only available in combinationwith Sensus Navigation*.
WARNING
The Road Sign Information function issupplementary driver support intended tofacilitate driving and help make it safer –it cannot handle all situations in all traffic,weather and road conditions.
Road Sign Information is not a substitutefor the driver's attention and judgment.The driver is always responsible forensuring the vehicle is driven in a safemanner, at the appropriate speed, with anappropriate distance to other vehicles,and in accordance with current trafficrules and regulations.
Related information
Activating/deactivating Road Sign Informa-tion (p. 357)
Road Sign Information and sign displays(p. 358)
Road Sign Information and SensusNavigation (p. 358)
Road Sign Information with Speed Warningand Settings (p. 359)
Activating/deactivating Speed Warning inRoad Sign Information (p. 360)
86Road Sign Information87Road signs differ according to market ‒ the illustrations shown here are just some examples.