VOLVO S90 2017 Owner´s Manual

DRIVER SUPPORT
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"Setting a warning level (distance)" in the article "City Safety settings."
• If RCW detects a vehicle approachingfrom behind, the seat belt pretensionersand Whiplash Protection System will beactivated.
Related information
•City Safety limitations (p. 304)
• City Safety
™ (p. 296)
• Rear Collision Warning (RCW) (p. 308)
Detecting obstructions with City Safety
City Safety can detect vehicles, cyclists, large animals and pedestrians.
VehiclesCity Safety detects most types of vehicles that are either stationary, moving in the same direc-tion as your vehicle or those described in the arti-cle "City Safety in crossing traffic." In order for City Safety to detect a vehicle in darkness, its headlights and taillights must be onand clearly visible.
Cyclists
Optimal example of what the system considers to be a cyclist: clear body/bike contours
To help function optimally, City Safety's function for cyclist detection needs clear informationabout the bike itself and the rider's head, arms, shoulders, legs, the upper and lower parts of thebody and a cyclist's normal pattern of movement.
• If major parts of the cyclist's body are notvisible to the camera, the system cannotdetect the cyclist.
• The cyclist must be an adult riding a bikeintended for an adult.
WARNING
City Safety is designed to be a supplementary driving aid and cannot detect all cyclists in allsituations, such as:
• a partially obscured cyclist.
• a cyclist whose clothing prevents a clear view of the person's body contours.
• a cyclist transporting a large object.
The driver is always responsible for operating the vehicle in a safe manner.

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Pedestrians
Optimal example of what the system considers to be a pedestrian: clear body contours
To help function optimally, City Safety's function for pedestrian detection needs clear informationabout the person's head, arms, shoulders, legs,the upper and lower parts of the body and a per-son's normal pattern of movement. In order to detect a pedestrian, there must be a contrast to the background. If there is little con-trast, the person may be detected late or not atall, which may result in a late or no reaction fromthe system.• If major parts of the pedestrian's body arenot visible to the camera, he/she may not bedetected.
• In order to detect a pedestrian, the systemmust have a full view of the person's entire body and the person must be at least 32 in.(80 cm) tall.
• City Safety can also help detect pedestriansin dark conditions if they are in the path ofthe vehicle's headlights.
WARNING
City Safety is designed to be a supplementary driving aid. It cannot detect pedestrians:
• who are partially obscured, wearing cloth- ing that prevents a clear view of the per-son's body contours or who are not atleast 32 in. (80 cm) tall.
• who have limited contrast to their immedi-ate background. A warning or brakingmay be delayed or not come at all.
• carrying a large object.
The driver is always responsible for operating
the vehicle in a safe manner.
Large animals
Examples of what City Safety considers to be large ani- mals: stationary or moving slowly with clear body con-tours
To function optimally, the system feature for detecting large animals (moose, horses, etc.)must receive as clear information about bodycontours as possible. This entails being able todetect the animal straight from the side andassumes that the animal has a normal pattern ofmovement. If parts of the animal's body are hidden from the camera, the system cannot detect this animal. City Safety can also help detect large animals in dark conditions if they are in the path of the vehi-cle's headlights.

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WARNING
City Safety is designed to be a supplementary driving aid. It cannot detect large animals in all situations such as:• large animals that are partially obscured
• large animals straight from the front or rear
• large animals that are running or movingquickly
• large animals that have limited contrast totheir immediate background. A warning orbraking may be delayed or not come atall.
• smaller animals such as dogs or cats
The driver is always responsible for operating the vehicle in a safe manner.
Related information
• City Safety
™ (p. 296)
• City Safety limitations (p. 304)
• City Safety in crossing traffic (p. 301)
City Safety in crossing traffic
City Safety can help the driver when turning in the path of an oncoming vehicle in an intersec-tion.
Turning at an intersection
1. The area in which City Safety can detect an oncoming vehicle
In order for City Safety to detect an approaching vehicle in situations where there is a risk of a col-lision, that vehicle must be within City Safety'srange (the red area in the illustration). The following criteria must also be met:
• your vehicle's speed must be at least 3 mph (4 km/h)
• the approaching vehicle's headlights must beon
• your vehicle must be making a left turn
WARNING
•City Safety is a supplementary driving aid and does not function in all driving situa-tions or in all traffic, weather or road con-ditions.
• Warnings and braking for an approachingvehicle will usually come at a very latestage.
• The driver is responsible for maintaining asafe distance and speed. Never wait for awarning or for City Safety to take action.
Limitations in crossing trafficIn certain situations, it may be very difficult forCity Safety to help the driver avoid a collision withan approaching vehicle in crossing traffic, forexample:
• on slippery roads when Electronic StabilityControl is active
• if the approaching vehicle is detected at alate stage
• If the approaching vehicle is partiallyobscured by another vehicle
• if the approaching vehicle moves erratically(e.g., sudden lane changes at a late stage)
Related information
•
City Safety
™ (p. 296)
• City Safety limitations (p. 304)

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City Safety when evasive action is not possible
City Safety can help the driver by automatically braking the vehicle sooner if it is not possible tosteer out of a potential collision situation.
City Safety assists the driver by continuously try- ing to determine possible "escape routes" to thesides if a slow-moving or stationary vehicle aheadis detected at a late stage.
Your vehicle (1) cannot "see" any way of veering to avoid the vehicle ahead (2) and will attempt to auto-brake sooner
Your vehicle
Slow moving/stationary vehicle
City Safety will not trigger the auto-brake func- tion as long as the driver has a chance to avoid acollision by steering the vehicle. However, if City Safety determines that an eva-sive steering maneuver is not possible due to alack of space in the adjacent traffic lanes, thefunction will attempt to assist the driver by auto-matically applying the brakes considerablysooner.
WARNING
City Safety's capacity to assess certain traffic situations is a supplemental aid to the driverand does not function in all driving/traffic sit-uations or weather/road conditions. It cannever replace the driver

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The following table shows some of the situations that can cause the message to be displayed andsuggested actions.
Cause
Action
The area of the wind- shield in front of thecamera/radar sensor isdirty or covered by ice orsnow. Clean the wind-shield or removethe ice/ snow.
Thick fog or heavy rain/snow blocks reduces thecamera/radar sensor'srange of visibility. No action. Thedriver should beextra alert in condi-tions of this type.
There is dirt betweenthe inside of the wind-shield and the camera/radar sensor. Have the area ofthe windshieldcleaned by atrained and quali-fied Volvo servicetechnician.
CAUTION
•
Service and maintenance on City Safety may only be carried out by a trained andqualified Volvo service technician.
• If a crack, scratch or stone chip shouldoccur in the section of the windshield infront the camera/radar sensor, contact atrained and qualified Volvo service techni-cian to repair or replace the windshield.Failing to do so may result in reducedCity Safety functionality.
• This can also result in certain functionsbeing reduced or disabled, or they mayrespond incorrectly.
To help avoid the risk of incorrect, reduced ordisabled functionality for driver support sys-tems using the camera or radar sensors:
• Volvo recommends that cracks, scratchesor stone chips on the windshield in front of the camera/radar sensor should
not
be repaired; in such cases, the entire windshield should be replaced.
• Before the windshield is replaced, con-tact a Volvo retailer to ensure that thecorrect windshield is ordered and instal-led. If the wrong type of windshield isused, this may cause City Safety to func-tion improperly or not at all.
• Volvo recommends the use of only Genu-ine Volvo Replacement Windshields.
• When replacing windshield wipers, use the same type or ones approved by Volvo.
After the windshield has been replaced, thecamera/radar sensor will have to be recalibra-ted by a trained and qualified Volvo servicetechnician to help ensure proper function ofall of the vehicle's camera-/radar-based sys-tems.
MaintenanceIn order for City Safety to function properly, the area of the windshield must be kept free of dirt,ice, snow, etc.
Other vehicle functionsIf a message is displayed in the instrument panel,this means that the other systems using the cam-era/radar sensor (see the list below) will not havefull functionality or may not function at all. The camera and radar sensor is used by the fol- lowing functions: • Distance Alert
*
• Driver Alert Control
*
• Adaptive Cruise Control
*
• Pilot Assist
*
• Run-off Mitigation
• Road Sign Information
*
• Active High Beams
*
• Lane Keeping Aid
*

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304Do not mount or in any way attach anything on the windshield that could obstruct the camera/radar sensor.
WARNING
•
The camera has the same type of limita- tions as the human eye, i.e., it cannot seeas well in heavy snowfall or rain, thick fogor in heavy blowing dust or snow. In suchconditions, systems depending on thecamera may experience greatly reducedfunctionality or may be temporarily deacti-vated.
• Never place any objects, decals, etc., onthe windshield in front of the camera. Thiscould reduce or block the camera

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Camera and radar sensor's field of vision
The camera and radar sensor have limited fields of vision. In some situations they may detect avehicle, large animal, pedestrian or cyclist laterthan expected or not detect them at all. Other vehicles that are dirty may be detected later than others and in dark conditions, motorcy-cles may be detected late or not at all. If a text message is displayed in the instrument panel indicates that the camera or radar sensorare blocked, it may be difficult for City Safety todetect a vehicle, pedestrian or cyclist and thesystem's functionality may be reduced.
WARNING
Text messages may not be displayed in all sit- uations in which the camera and/or radarsensor are blocked. It is therefore essential tokeep the windshield in front the camera/radarsensor clean and free from snow, ice, etc. Camera and radar sensor components should only be serviced or replaced by a trained andqualified Volvo service technician.
Action by the driver
Backing up
City Safety is temporarily deactivated while the vehicle is backing up.
Low speed
City Safety is not activated at very low speeds (under approx. 3 mph (4 km/h). This means thatthe system will not be triggered if your vehicleapproaches a vehicle ahead at very low speed,such as when parking.
Active driver
Action by the driver always has priority. For this reason, City Safety may not react or react laterthan expected in situations in which the driver isactively operating the vehicle, even if a collision isimminent. This is also done to help eliminateexcessive warnings.
Other limitations
City Safety uses the vehicle's camera and radar sensor, which have certain general limitations.See the articles "Camera limitations" and "Radarsensor limitations" for additional information.
WARNING
•
Warnings and braking may be delayed or not occur at all if traffic, weather or otherconditions prevent the camera and/orradar sensor from detecting pedestrians,cyclists, large animals or other vehiclescorrectly.
• Other vehicles can only be detected indarkness if their headlights and taillightsare clearly visible.
• The sensors have a limited range forpedestrians and cyclists. The systemfunctions best at relative speeds up to30 mph (50 km/h). For stationary orslow-moving vehicles, the system func-tions best at speeds up to approx.43 mph (70 km/h).
• If there is a risk of colliding with a largeanimal, City Safety can reduce the vehi-cle's speed by up to 9 mph (15 km/h).Warnings and braking are most effectiveat speeds above 43 mph (70 km/h) andless effective at lower speeds.

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WARNING
•Warnings for stationary or slow-moving vehicles and large animals may be impe-ded by darkness or poor visibility.
• Warnings and braking for pedestrians andcyclists will not be provided at speedsabove approx. 43 mph (70 km/h).
• Do not place, attach or mount any objectson the inside or outside of the windshieldnear or over the sensor. This could affectthe camera-based functions.
• Objects, snow, ice or dirt in the camera'sfield of vision may result in certain func-tions being reduced or disabled, or theymay respond incorrectly.
Related information
•
City Safety
™ (p. 296)
• Adaptive Cruise Control (ACC) - trouble-shooting (p. 271)
• City Safety
™ troubleshooting (p. 302)
• Camera limitations (p. 293)
• Radar sensor limitations (p. 289)

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City Safety symbols and messages
A number of City Safety-related messages may be displayed in the instrument panel.
Several examples are provided in the following table:
Message Explanation
City Safety Automatic interventionWhen City Safety is braking or has applied the brakes, one of more symbols may illuminate in the instrument panel and a text message will be displayed.
City Safety Reduced functionality Service requiredThe system is not functioning properly. Contact a trained and authorized Volvo service technician.
A text message can be erased by briefly pressing the O button on the right-side steering wheel
keypad. If the message recurs, contact a trained and authorized Volvo service technician orretailer.
Related information
• City Safety
™ (p. 296)

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Rear Collision Warning (RCW)The
Rear Collision Warning with braking at
standstill (RCW) function can help the driver
avoid rear-end collisions.
RCW is activated automatically each time the engine is started. RCW can warn the driver of a vehicle approach- ing yours from behind by rapidly flashing yourturn signals. RCW is only activated when a vehicle is rapidly approaching your vehicle from behind. At speeds below 20 mph (30 km/h), if RCW determines that your vehicle is at risk of a rear-end collision, the front seat belt pretensionersand the Whiplash Protection System are acti-vated. Just prior to the collision, the brakes are also applied to help reduce your vehicle's forwardmovement if and when the collision occurs. How-ever, this can only happen if your vehicle is sta-tionary. The brakes will be released immediately if the accelerator pedal is pressed.
NOTE
• Due to local traffic regulations in certain markets, Rear Collision Warning (RCW) will
not activate the rear turn signals.
That part of the function will be deacti- vated.
• The use of the rear turn signals will alsobe deactivated if the City Safety warning level is set at
Later. See also the section
"Setting a warning level (distance)" in the article "City Safety settings."
• If RCW detects a vehicle approachingfrom behind, the seat belt pretensionersand Whiplash Protection System will beactivated.
LimitationsIn some circumstances, it may be difficult for RCW to help the driver if there is a risk of a colli-sion, such as: •If the vehicle approaching from the rear is detected at a late stage
• If the vehicle approaching from the rearchanges lanes at a late stage
• If the vehicle approaching from the rear ismoving at a speed above approx. 50 mph(80 km/h)
Related information
•
City Safety
™ (p. 296)
• Whiplash protection system (p. 59)
• Seat belts (p. 60)
• City Safety warning level settings (p. 298)