2017 VOLVO V90 Owners Manual

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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.

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CauseAction
The windscreen surface in front of the camera and radar unit is dirty or covered with ice or snow. Clean dirt, ice and snow from the windscreen surface in front of the camera andradar 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.
Water or snow from the road surface swirls up and blocks the radarsignals or camera view. No action. Sometimes the unit does not work on a very wet or snow-covered roadsurface.
Dirt has appeared between the inside of the windscreen and the cam-era and radar unit. Visit a workshop to have the windscreen inside the unit's cover cleaned - anauthorised Volvo workshop is recommended.
Strong oncoming light No action. The camera unit is reset automatically in more favourable light condi-tions.
NOTE
Keep the windscreen clean in front of the camera and radar unit.
High temperatureAt very high temperatures the camera and radar unit can temporarily be switched off forabout 15 minutes after the engine is started soas to protect the unit's electronics. The cameraand radar unit restarts automatically when thetemperature has fallen sufficiently.
Damaged windscreen
IMPORTANT
If a crack, scratch or stone chip in the wind- screen in front of one of the camera andradar unit “windows” covers an area ofapprox. 0.5 x 3.0 mm or larger, a workshopmust be contacted to have the windscreenreplaced. An authorised Volvo workshop isrecommended. If not rectified it can lead to reduced perform- ance for the driver support systems that usethe camera and radar unit.
This may mean that functions are reduced, deactivated completely or give incorrect func-tion response. To avoid the risk of failed, deficient or reduced operation of driver support systemsthat use the radar unit, the following alsoapplies:
• Volvo recommends
against repairing
cracks, scratches or stone chips in thearea in front of the camera and radar unit.Instead, the whole windscreen should bereplaced.
• Before replacing a windscreen, contactan authorised Volvo workshop to verify

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that the correct windscreen is ordered and fitted.
• The same type or Volvo-approved wind-screen wipers must be fitted duringreplacement.
IMPORTANT
When the windscreen is replaced, the camera and radar unit must be recalibrated at theworkshop to ensure the functionality of all thecar

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City Safety
City Safety uses visual, haptic and acoustic sig- nals to alert the driver of any pedestrians,cyclists, large animals and vehicles that appear.The car then brakes automatically unless thedriver him/herself acts within a reasonable time.
Location of the radar unit 14
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City Safety can prevent a collision or reduce colli- sion speed. City Safety is an aid to assist a driver who is at risk of colliding with a pedestrian, large animal,cyclist or a vehicle. The City Safety function can help the driver to avoid a collision when driving in queues, e.g.when changes in the traffic ahead, combined witha lapse in attention, could lead to an incident. The function helps the driver by automaticallybraking the car in the event of an imminent riskof collision if the driver does not react in time bybraking and/or swerving. City Safety activates a short, sharp braking proce- dure, normally stopping the car just behind thevehicle in front. For most drivers this is well out-side normal driving style and may be perceived asuncomfortable. City Safety is activated in situations where the driver should have started braking earlier, whichis why it cannot help the driver in every situation. City Safety is designed to be activated as late as possible in order to avoid unnecessary interven-tion. The driver or passengers are not normally aware of City Safety - it only intervenes in a situationwhere a collision is immediately imminent. City Safety can avoid a collision with a vehicle ahead or a bicycle by reducing the speed of thecar by up to 50 km/h (30 mph). For a pedestrian,City Safety can reduce speed by up to 45 km/h(28 mph). If the speed difference is greater than 50 km/h (30 mph) or 45 km/h (28 mph) respectively, CitySafety's automatic braking cannot prevent a colli-sion but it can mitigate the consequences of acollision.In the event of a risk of a collision with a largeanimal, City Safety can reduce the car's speed byup to 15 km/h (9 mph). The braking function forlarge animals is primarily intended to reduce thecollision force at high speeds. Braking is mosteffective at speeds above 70 km/h (43 mph) andless effective at low speeds.
14
NOTE: The illustration is schematic - details may vary depending on car model.

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WARNING
City Safety is an aid and does not work in all driving situations, traffic, weather and roadconditions. Warning only activated in the event of a high risk for collision. This section and the section"Limitations for City Safety" inform about limi-tations that the driver should be aware ofbefore using City Safety. Warnings and brake interventions for pedes- trians and cyclists are deactivated at vehiclespeeds above 70 km/h (43 mph). City Safety's auto-brake function can prevent a collision or reduce collision speed. Toensure full brake performance, the drivershould always depress the brake pedal - evenif the car auto-brakes. City Safety does not activates any auto-brake functions in the event of heavy acceleration. The driver is always responsible for maintain- ing the correct distance and speed - neverwait for a collision warning or for City Safetyto intervene.
Market limitationCity Safety is not available in all countries. If City Safety does not appear in the centre display's
Settings menu, the car is not equipped with this
function. Search path in the top menu:
SettingsMy
Car
IntelliSafe
Overview
Function overview 14
.
Acoustic warning signal in the event of a risk of collision
Warning signal in the event of a risk of colli- sion
Distance measurement with the camera and radar unit
City Safety carries out three steps in the follow-ing order:
1. Collision warning
2. Brake support
3. Auto Brake
Collision warning
The driver is first warned of a potentially immi- nent collision. City Safety can detect pedestrians, cyclists or vehicles that are stationary or moving in the samedirection as the car and are ahead. City Safetycan also detect pedestrians, cyclists or large ani-mals that are crossing the road in front of the car. In the event of a risk of collision with a pedes- trian, large animal, cyclist or vehicle (includingvehicles described in the "City Safety in crosstraffic" section), the driver's attention is alerted bymeans of a red flashing warning signal, an acous-tic signal and a haptic warning in the form of abrake pulse. At lower speeds or with hard brakingor acceleration there will be no haptic warning.The brake pulse frequency varies according tothe car's speed.
Brake support
If the risk of collision has increased further after the collision warning then the brake support isactivated. Brake support reinforces the driver

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Auto Brake
The automatic brake function is activated last. If in this situation the driver has not yet started to take evasive action and the risk of collision isimminent then the automatic braking function isdeployed - this takes place irrespective ofwhether or not the driver brakes. Braking thentakes place with full brake force in order toreduce collision speed, or with limited brake forceif it is sufficient to avoid a collision. In connection with automatic braking the seatbelt tensioner may also be activated. For more infor-mation see the "Seatbelt tensioner" section. In some situations, the action of Auto-brake may begin with light braking and then progress to fullbrake action. When City Safety has prevented a collision with a stationary object, the car remains stationary inanticipation of positive action by the driver. If thecar has been braked to avoid collision with aslower vehicle in front, its speed is reduced tomatch that of the vehicle in front.
NOTE
On cars with manual gearbox, the engine stops when the Auto-brake function has stop-ped the car, unless the driver has managed todepress the clutch pedal beforehand.
The driver can always interrupt a braking inter- vention by firmly depressing the acceleratorpedal.
NOTE
When City Safety™ brakes, the brake lights
come on.
When City Safety is activated and brakes the vehicle, the driver display shows a text messageto the effect that the function is/has been active.
WARNING
City Safety must not be used as an excuse for the driver to change his/her driving style. Ifthe driver relies solely on City Safety to do thebraking, there might be a risk of a collisionsooner or later.
Related information
• Setting the warning distance for City Safety (p. 332)
• Detection of obstacles with City Safety
™
(p. 333)
• City Safety when evasive manoeuvres areprevented (p. 336)
• City Safety in cross traffic (p. 335)
• Limitations of City Safety (p. 337)
• Messages for City Safety (p. 339)
• Seatbelt tensioner (p. 59)
Setting the warning distance for City Safety
City Safety is always activated, but it is possible to select the warning distance for the function.
NOTE
The City Safety function cannot be deacti- vated. It is activated automatically when theengine/electric operation is started andremains switched on until the engine/electricoperation is switched off.
The warning distance determines the sensitivity of the system and regulates the distance atwhich the visual, acoustic and haptic warningsshall be triggered. 1. Tap on
Settings in top view in the centre
display.
2. Press
My CarIntelliSafe.
3. Under
City Safety Warning, select Late,Normal or Early to set the desired warning
distance.
If the
Early setting produces too many warnings,
which could be perceived as irritating in certain situations, then use the
Normal or Late warning
distance. If warnings are perceived as being too frequent or disturbing then the warning distance can bereduced. This would lead to the system warning

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at a later stage, which reduces the total number of warnings. The
Late warning distance should only be used
in exceptional cases, as in dynamic driving.
NOTE
City Safety warns the driver when there is a risk of a collision, but it cannot shorten thedriver

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334bicycle outline, requiring the ability to identify the bicycle, head, arms, shoulders, legs, upper andlower body plus a normal human pattern of move-ment. If large parts of the cyclist's body or bicycle are not visible to the function's camera then the sys-tem cannot detect a cyclist. For the function to be able to detect a cyclist, he/she must be an adult and riding a bicycledesigned for adults.
WARNING
City Safety is an aid, and cannot detect all cyclists in all situations and, for example, can-not see: •
partially obscured cyclists.
• cyclists wearing clothing that obscures the body outline.
• bicycles loaded with large objects.
The driver is always responsible that the vehi- cle is driven correctly and with a safety dis-tance adapted to the speed.
Pedestrians
Optimal examples of what the system regards as pedes- trians with clear body outlines.
For optimal performance, the system function that detects pedestrians must receive the clear-est possible information about the body outline,requiring the ability to identify the head, arms,shoulders, legs, upper and lower body plus a nor-mal human pattern of movement. In order that it shall be possible to detect a pedestrian there must be a contrast with thebackground and this will be affected by suchthings as clothes, the background and theweather. With poor contrast the pedestrian mayeither be detected late or not at all, which maymean that warnings and braking are late or omit-ted. City Safety can also detect pedestrians in thedark if they are illuminated by the car's head-lamps.
WARNING
City Safety is an aid and cannot detect all pedestrians in all situations and, for example,cannot see:
• partially obscured pedestrians, people in clothing that hides their body contour orpedestrians shorter than 80 cm.
• pedestrians if the background contrast ofthe pedestrians is poor - warning andbrake interventions may then be late ornot occur at all.
• pedestrians who are carrying largerobjects.
The driver is always responsible that the vehi-
cle is driven correctly and with a safety dis- tance adapted to the speed.