sensor VOLVO S90 TWIN ENGINE 2020 Repair Manual

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DRIVER SUPPORT
324
your lane must have clear side lane mark- ings
your vehicle must be positioned straight inyour lane
the oncoming vehicle must be positionedwithin your vehicle's lane markings
the oncoming vehicle's headlights mustbe on
the function can only handle “front-to-front” collisions
the function can only detect vehicles withfour wheels.
WARNING
Warnings and brake interventions due to an imminent collision with an oncomingvehicle always come very late.
Related information

City Safety
™ (p. 314)
City Safety limitations (p. 324)
City Safety limitations
City Safety 57
functionality may be reduced in
certain situations.
Surroundings
Low objects
Hanging objects, such as flags for overhang- ing loads or accessories such as auxiliarylights or front protective grids that extendbeyond the height of the hood, may limit City Safety functionality.
Slippery road conditions
The extended braking distance on slippery roads may reduce City Safety's capacity tohelp avoid a collision. In these types of situa-tions, the Anti-lock Braking System and Elec- tronic Stability Control (ESC 58
) are designed
for optimal braking power with maintained stability.
Backlighting
The visual warning signal in the windshield may be difficult to detect in bright sunlight, ifthere are reflections, or if the driver is wearingsunglasses or not looking straight ahead.
Heat
If the temperature in the passenger compart- ment is high due to e.g. bright sunlight, thevisual warning signal in the windshield may betemporarily disabled.
Camera and radar sensor's field of vision
The camera's field of vision is limited and in certain situations, it may be unable to detectpedestrians, large animals, cyclists or vehicles,or it may detect them later than expected. Vehicles that are dirty may be detected later than clean vehicles, and in dark conditions,motorcycles may be detected late or not at all. If a text message displayed in the instrument panel indicates that the camera/radar sensoris obstructed, it may be difficult for City Safetyto detect pedestrians, large animals, cyclists,vehicles or lane markings in front of the vehi-cle. City Safety functionality may therefore bereduced. Text messages may not be displayed for all sit- uations in which the windshield sensors areblocked. The driver must therefore alwayskeep the windshield in front of the camera/radar sensor clean.
CAUTION
Only a workshop may perform mainte- nance on driver support components – anauthorized Volvo workshop is recom-mended.
57 This function is not available on all markets.
58 Electronic Stability Control

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325
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 there-fore not intervene in situations in which yourvehicle is approaching another vehicle veryslowly, such as when 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 insituations in which the driver is clearly steeringand operating the accelerator pedal, even if acollision is unavoidable. An active and aware driving style may there- fore delay collision warnings and interventionin order to minimize unnecessary warnings.
Other limitations
WARNING
The driver support system only issues a warning for obstacles detected by its radarsensor – thus, a warning may come after adelay or not at all. Never wait for a warning or assistance. Apply the brakes when necessary.
WARNING
Warnings and brake interventions can be triggered late or not at all if the traf-fic situation or external influences pre-vent the camera and radar unit fromproperly detecting pedestrians,cyclists, large animals or vehiclesahead of the vehicle.
To be able to detect vehicles at night,its front and rear lights must work andilluminate clearly.
The camera and radar unit have a lim-ited range for pedestrians and cyclists– the system can provide effectivewarnings and brake interventions if therelative speed is lower than 50 km/h(30 mph). For stationary or slow-mov-ing vehicles, warnings and brake inter-ventions are effective at vehicle speedsof up to 70 km/h (43 mph). Speedreduction for large animals is less than15 km/h (9 mph) and can be achievedat vehicle speeds over 70 km/h(43 mph). At lower speeds, the warn-ing and brake intervention for large ani-mals is less effective.
Warnings for stationary or slow-mov-ing vehicles and large animals can bedisengaged due to darkness or poorvisibility.
Warnings and brake interventions for pedestrians and cyclists are disen-gaged at vehicle speeds over 80 km/h(50 mph).
Do not place, affix or mount anythingon the inside or outside of the wind-shield, or in front of or around the cam-era and radar unit – this could disruptcamera-based functions.
Objects, snow, ice or dirt in the area ofthe camera sensor can reduce thefunction, disengage it completely orgive an improper function response.

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DRIVER SUPPORT
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WARNING
The City Safety auto-brake function can prevent a collision or reduce colli-sion speed, but to ensure full brakeperformance the driver should alwaysdepress the brake pedal – even whenthe car auto-brakes.
The warning and steering assistanceare only activated if there is a high riskof collision – you must therefore neverwait for the collision warning or CitySafety to intervene.
Warnings and brake interventions forpedestrians and cyclists are disen-gaged at vehicle speeds over 80 km/h(50 mph).
City Safety does not activate auto-braking intervention during heavyacceleration.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Market limitationsCity Safety is not available in all countries. If City Safety is not shown in the center display's
Settings menu, your vehicle is not equipped
with this function. In the center display's Top view, tap:
SettingsMy CarIntelliSafe
Related information
City Safety
™ (p. 314)
Camera/radar sensor limitations (p. 309)

DRIVER SUPPORT
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* Option/accessory.329
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Related information
Rear Collision Warning
* (p. 328)
Setting a warning distance for City Safety (p. 317)
Camera/radar sensor limitations (p. 309)
BLIS
*
The BLIS 62
function is designed to help pro-
vide assistance in heavy traffic with several lanes moving in the same direction by helpingthe driver to detect the presence of vehiclesin the "blind spot" area behind and to the sideof the vehicle.
Location of BLIS indicator light.
BLIS is a driver support system designed to alert the driver of:
vehicles in your "blind spot"
vehicles approaching rapidly in adjacentlanes.
BLIS overview
Blind spot zone
Rapidly approaching vehicle zone.
The system is designed to react to:
vehicles passing your vehicle
vehicles that are rapidly approaching your vehicle from behind.
When BLIS detects a vehicle in zone 1 or arapidly approaching vehicle in zone 2, an indi-cator light will illuminate in the relevant rear-view mirror and glow steadily. If the driverthen uses the turn signal on the side in whichthe warning has been given, the indicator lightwill become brighter and begin flashing. BLIS is active when your vehicle is traveling at a speed over 10 km/h (6 mph).
62 Blind Spot Information

DRIVER SUPPORT
* Option/accessory.331
BLIS limitations
BLIS 64
functionality may be reduced in cer-
tain situations.
Keep the marked area clean (on both the left and right sides of the vehicle) 65
.
Examples of limitations:
Dirt, ice and snow covering the sensors may reduce functionality and prevent thesystem from providing warnings.
WARNING
BLIS does not work in sharp curves.
BLIS does not work when the vehicle is being reversed.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Related information

BLIS
* (p. 329)
Camera/radar sensor limitations (p. 309)
64
Blind Spot Information
65 Note: This illustration is general and details may vary depending on model.

DRIVER SUPPORT
* Option/accessory.
332
BLIS messages
A number of messages related to BLIS 66
may
be displayed in the instrument panel. Several examples are provided below.
Message Meaning
Blind spot sensor Service requiredThe system is not functioning as intended. Contact a workshop A
.
A An authorized Volvo workshop is recommended.
A text message can be erased by briefly press- ing the
button in the center of the right-
side steering wheel keypad. If a message cannot be erased, contact a workshop A
.
Related information
BLIS
* (p. 329)
Cross Traffic Alert
* (p. 333)
66
Blind Spot Information

DRIVER SUPPORT
* Option/accessory.335
The vehicle is parked very far into a parking space.
In a diagonal parking space, CTA may be completely "blind" on one side of your vehicle.
CTA's blind zone.
CTA's field of vision.
However, as you back your vehicle slowly out of a parking space, CTA's field of vision changes in relation to the obstructing vehicle/object and its blind zone is reduced.
Examples of further limitations

The
auto brake sub-function only detects
vehicles in motion and may therefore not
"see" and brake for e.g. stationary obsta- cles, a cyclists or a pedestrian.
Dirt, ice and snow covering the sensorsmay reduce functionality and prevent thesystem from providing warnings.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Related information

Cross Traffic Alert
* (p. 333)
Camera/radar sensor limitations (p. 309)

DRIVER SUPPORT
* Option/accessory.
336
Cross Traffic Alert *71
messages
A number of messages related to Cross Traffic Alert (CTA) may be displayed in the instrument panel. Several examples are provi-ded below.
Message Meaning
Blind spot sensor Service requiredThe system is not functioning as intended. Contact a workshop
A
.
A An authorized Volvo workshop is recommended.
A text message can be erased by briefly press- ing the
button in the center of the right-
side steering wheel keypad. If a message cannot be erased, contact a workshop A
.
Related information
Cross Traffic Alert
* (p. 333)
BLIS
* (p. 329)
Cross Traffic Alert
* limitations (p. 334)
71
Warning for crossing traffic when the vehicle is backing up.

DRIVER SUPPORT
* Option/accessory.341
to receive an audible alert if the vehicle is approaching a speed camera. To adjust the audible alert settings:
1. Select
SettingsMy CarIntelliSafe
Road Sign Information in the center
display's Top view.
2. Select/deselect
Speed Camera Audio
Warning to activate/deactivate the speed
camera audible alert.
Related information
Road Sign Information
* (p. 337)
Speed limit and speed camera warnings from Road Sign Information
* (p. 339)
Road Sign Information
* limitations
(p. 341)
Road Sign Information * limitations
Road Sign Information (RSI 82
) functionality
may be reduced in certain situations.
The function could have reduced functionality due to e.g.: faded road signs
signs located in a curve in the road
twisted or damaged signs
signs positioned high above the road
fully/partially obstructed or poorly posi- tioned signs
signs partially or fully covered by frost,snow and/or dirt
digital road maps 83
that are outdated,
incorrect or do not contain speed informa- tion 84
.
NOTE
In certain markets, the Road Sign Informa- tion * function is only available in combina-
tion with Sensus Navigation *.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Related information
Road Sign Information
* (p. 337)
Camera/radar sensor limitations (p. 309)
82
Road Sign Information
83 Vehicles equipped with Sensus Navigation *.
84 Map data and speed information is not available for all areas.

DRIVER SUPPORT
* Option/accessory.
344
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. 342)
Camera/radar sensor limitations (p. 309)
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