2017 VOLVO V90 sensor

DRIVER SUPPORT
* Option/accessory.
290
Limitations of Distance Warning *
The Distance warning (Distance Alert) function may have limitations in certain situations.
NOTE
Strong sunlight, reflections or strong varia- tions in light intensity, as well as wearing sun-glasses, could mean that the warning light inthe windscreen cannot be seen. Poor weather or winding roads could affect the radar unit's capacity to detect vehicles infront. The size of other vehicles could also affect detection capacity, e.g. motorcycles. Thiscould mean that the warning lamp illuminatesat a shorter distance than the setting or thatthe warning is temporarily absent. Extremely high speeds can also cause the lamp to illuminate at a shorter distance thanthat set due to limitations in sensor range.
NOTE
The function uses the car's radar unit, which has some general limitations, see the "Limita-tions for radar unit" section.
Related information
• Distance Warning
* (p. 288)
• Activating and setting the time interval for Distance warning
* (p. 289)
• Limitations of the radar unit (p. 319)
Adaptive cruise control
*
The adaptive cruise control (Adaptive Cruise Control - ACC) helps the driver to maintain aneven speed combined with a pre-selected timeinterval to the vehicle ahead.
An adaptive cruise control provides a more relax- ing driving experience on long journeys on motor-ways and long straight main roads in smooth traf-fic flows.
The camera and radar unit measures the distance to the vehicle ahead 5
.
The driver selects the desired speed and a time interval to the vehicle ahead. If the camera andradar unit detects a slower vehicle in front of thecar, the speed is adapted automatically via thepreset time interval to the vehicle. When the road
5 NOTE: The illustration is schematic - details may vary depending on car model.

DRIVER SUPPORT
* Option/accessory.303
SymbolMessage Specification
Adaptive cruise Service requiredThe system does not function as it should. A workshop should be contacted - an authorised Volvo workshop is recommended.
Windscreen sensor Sensor blocked, see Owner's manualClean the windscreen in front of the camera and radar unit's detectors.
Related information
•Adaptive cruise control
* (p. 290)
• Road Sign Information
* (p. 348)

DRIVER SUPPORT
}}
* Option/accessory.315
IMPORTANT
In certain situations, Pilot Assist steering assistance may have difficulty helping thedriver in the right way or it may be automati-cally deactivated - in which case, the use ofPilot Assist is not recommended. Examples ofsuch situations may be that: •the lane markings are worn, missing or cross each other.
• lane division is unclear, for example, whenthe lanes divide or merge or at exits or inthe event of multiple sets of markings.
• edges or other lines than lane markingsare present on or near the road, e.g.curbs, joints or repairs to the road sur-face, edges of barriers, roadside edges orstrong shadows.
• the lane is narrow or winding.
• the lane contains ridges or holes.
• weather conditions are poor, e.g. rain,snow or fog or slush or impaired viewwith poor light conditions, back-lighting,wet road surface etc.
The driver should also note that Pilot Assisthas the following limitations: • High kerbs, roadside barriers, temporary obstacles (traffic cones, safety barriers,etc.) are not detected. Alternatively, theymay be detected incorrectly as lane
markings, with a subsequent risk of con- tact between the car and such obstacles.The driver must ensure him/herself thatthe car is at a suitable distance from suchobstacles.
• The camera and radar sensor does nothave the capacity to detect all oncomingobjects and obstacles in traffic environ-ments, e.g. potholes, stationary obstaclesor objects which completely or partiallyblock the route.
• Pilot Assist does not "see" pedestrians,animals, etc.
• The recommended steering input is forcelimited, which means that it cannotalways help the driver to steer and keepthe car within the lane.
The driver always has the possibility of correcting or adjusting a steering intervention imposed byPilot Assist and can turn the steering wheel tothe desired position.
Steep roads and/or heavy loadBear in mind that Pilot Assist is primarilyintended for use when driving on level road surfa-ces. The function may have difficulty in keepingthe correct distance from the vehicle ahead whendriving on steep downhill slopes - in which case,be extra attentive and ready to brake. Do not usePilot Assist with a heavy load or with a trailer con-nected to the car.
Miscellaneous
•Off Road drive mode cannot be selected
when Pilot Assist is activated.
NOTE
The function uses the car's camera unit, which has some general limitations, see the"Limitations for camera unit" section.
NOTE
The function uses the car's radar unit, which has some general limitations, see the "Limita-tions for radar unit" section.
Related information
• Pilot Assist
* (p. 304)
• Activating and starting the Pilot Assist
*
(p. 307)
• Managing the speed for Pilot Assist
* (p. 309)
• Setting the time interval for Pilot Assist
*
(p. 310)
• Change of target and automatic braking with Pilot Assist
* (p. 313)
• Deactivating/activating the Pilot Assist
*
(p. 311)
• Overtaking assistance with the adaptivecruise control
* or Pilot Assist * (p. 298)

DRIVER SUPPORT
}}
319
Limitations of the radar unit The radar unit has certain limitations - which in turn also limits those functions that use the unit.
Blocked unit
The marked area must be kept free from stickers, objects, shade film, etc.12
.
The radar unit is placed inside the upper section of the windscreen together with the car's cameraunit.
IMPORTANT
Do not place, stick or mount anything on the outside or inside of the windscreen in front ofor around the camera and radar unit — thiscan interfere with camera and radar-depend-ent functions. This may mean that functions are reduced, deactivated completely or give incorrect func-tion response.
If the driver display shows this symbol with the message Windscreen
sensor Sensor blocked, see
Owner's manual, it means that the
camera and radar unit cannot detect other vehi- cles in front of the car.
The following table presents examples of possi- ble causes for a message being shown, alongwith the appropriate action:
Cause Action
The windscreen surface in front of the camera and radar unit is dirty or cov- ered with ice or snow. Clean dirt, ice and snow from the windscreen surface in front of the cameraand radar unit.
Thick fog and heavy rain or snow block the radar signals or the cameraview. No action. Sometimes the unit does not work during heavy rain or snowfall.
12
NOTE: The illustration is schematic - details may vary depending on car model.

DRIVER SUPPORT
}}
327
Limitations of the camera unit
The camera unit has certain limitations - which in turn also limits those functions that use the unit.
Impaired visionThe camera has limitations similar to the human eye, i.e. it can "see" worse in for example intensesnowfall or rain, dense fog, heavy dust stormsand snow flurries. Under such conditions, thefunctions of camera-dependent systems could besignificantly reduced or temporarily disengaged. Strong oncoming light, reflections in the carriage- way, snow or ice on the road surface, dirty roadsurfaces or unclear lane markings can also sig-nificantly reduce camera function when it is usedto scan the carriageway to detect pedestrians,cyclists, large animals and other vehicles.
Blocked unit
The marked area must be kept free from stickers, objects, shade film, etc. 13
.
The camera unit is placed inside the upper sec- tion of the windscreen together with the car'sradar unit.
IMPORTANT
Do not place, stick or mount anything on the outside or inside of the windscreen in front ofor around the camera and radar unit — thiscan interfere with camera and radar-depend-ent functions. This may mean that functions are reduced, deactivated completely or give incorrect func-tion response.
If the driver display shows this symbol with the message Windscreen
sensor Sensor blocked, see
Owner's manual, it means that the
camera and radar unit cannot detect other vehi- cles in front of the car.
The following table presents examples of possi- ble causes for a message being shown, alongwith the appropriate action:
13 NOTE: The illustration is schematic - details may vary depending on car model.

DRIVER SUPPORT
}}
337
has the opportunity to avoid a collision via a steering manoeuvre. However, if City Safety anticipates that an evasive manoeuvre is not possible due to traffic in anadjacent lane, the function can assist the driverby automatically starting to brake at an earlierstage.
WARNING
City Safety's ability to anticipate a certain sit- uation is an aid, and does not work in all driv-ing situations or traffic, weather and road con-ditions. The driver always bears ultimate responsibility for ensuring that the vehicle is driven safelyand that applicable laws and road traffic regu-lations are followed.
Related information
•
City Safety (p. 330)
• Limitations of City Safety (p. 337)
Limitations of City Safety
The City Safety function may have limitations in certain situations.
Surroundings
Low objects
Low-hanging objects, e.g. a flag/pennant for pro- jecting load, or accessories such as auxiliarylamps and bull bars that are higher than the bon-net limit the function.
Skidding
On slippery road surfaces the braking distance is extended, which may reduce the capacity of CitySafety to avoid a collision. In such situations, theanti-lock brakes and the stability control ESC willgive the best possible braking force with main-tained stability.
Oncoming light
The visual warning signal in the windscreen may be difficult to notice in the event of strong sun-light, reflections, when sunglasses are beingworn or if the driver is not looking straight ahead.
Heat
In the event of high passenger compartment temperature caused by e.g. strong sunlight, thevisual warning signal in the windscreen may betemporarily disengaged.
The camera and radar unit's field of view
The camera's field of vision is limited, which is why pedestrians, large animals, cyclists and vehi- cles in some situations cannot be detected, orthey are detected later than anticipated. Dirty vehicles may be detected later than others and if it is dark, motorcycles may be detected lateor not at all. If a text message in the driver display indicates that the camera and radar unit is obstructed, CitySafety may be unable to detect pedestrians, largeanimals, cyclists, vehicles or road lines ahead ofthe car. This means that the functionality of CitySafety may be reduced. However, an error message is not shown in all situations where the windscreen sensors areobstructed. The driver must therefore take care tokeep the area of windscreen in front of the cam-era and radar unit clear.
IMPORTANT
Maintenance and replacement of City Safety components must only be performed by aworkshop - an authorised Volvo workshop isrecommended.
Driver intervention
Reversing
When your own car is reversing, City Safety is temporarily deactivated.

||
DRIVER SUPPORT
338
Low speed
City Safety is not activated at very low speeds - below 4 km/h (3 mph) - and the system there-fore does not intervene in situations where yourcar is approaching a vehicle ahead very slowly,e.g. when parking.
Active driver
Driver commands are always prioritised, which is why City Safety does not intervene or postponewarning/intervention in situations where thedriver is steering and accelerating in a decisivemanner, even if a collision is unavoidable. Active and aware driving behaviour can therefore delay a collision warning and intervention in orderto minimise unnecessary warnings.
Miscellaneous
WARNING
Warnings and brake interventions could be implemented late or not at all if a traffic situa-tion or external influences mean that the cam-era and radar unit cannot detect pedestrians,cyclists, large animals or vehicles correctly. For vehicles to be detected at night, their headlamps and rear lamp cluster must beswitched on and shining clearly. The camera and radar unit has a limited range for pedestrians and cyclists. The system canprovide effective warnings and brake interven-tions as long as the relative speed is below50 km/h (30 mph). For stationary or slow-moving vehicles, warnings and brake interven-tions are effective at vehicle speeds up to70 km/h (43 mph). Speed reduction for largeanimals is less than 15 km/h (9 mph) andcan be achieved at vehicle speeds above70 km/h (43 mph). The warning and brakeintervention for large animals is less effectiveat lower speeds. Warnings for stationary or slow-moving vehi- cles and large animals could be disengageddue to darkness or poor visibility. Warnings and brake interventions for pedes- trians and cyclists are deactivated at vehiclespeeds exceeding 70 km/h (43 mph). Do not place, stick or mount anything on the outside or inside of the windscreen in front ofor around the camera and radar unit — thiscan interfere with camera-dependent func-tions.
Objects, snow, ice or dirt in the area of the camera sensor may reduce its function, fullydeactivate it or give incorrect functionresponse.
NOTE
The function uses the car's camera unit, which has some general limitations, see the"Limitations for camera unit" section.
NOTE
The function uses the car's radar unit, which has some general limitations, see the "Limita-tions for radar unit" section.
Related information
•City Safety (p. 330)
• Limitations of the camera unit (p. 327)
• Limitations of the radar unit (p. 319)

DRIVER SUPPORT
}}
* Option/accessory.343
Limitations of Blind Spot Information*
The Blind Spot Information (BLIS) function may have limitations in certain situations.
Examples of limitations:
• Dirt, ice and snow covering the sensors may reduce the functions and deactivate alerts.
• BLIS is deactivated when a trailer is con-nected to the car