sensor VOLVO V90 CROSS COUNTRY 2021 Workshop Manual

DRIVER SUPPORT
* Option/accessory.317
Activating or deactivating Curve Speed Assist (CSA) *
The Curve Speed Assist (CSA) function can be activated as a supplement to Adaptive Cruise Control * or Pilot Assist *. The driver can
also deactivate the function.
Activate or deactivate the function using this button inthe center display's Functionview.
GREEN button indicator light – the func- tion is activated.
GRAY button indicator light – the functionis deactivated.
The next time the engine is started, the lastused setting is reactivated or the key's driver profile settings are followed 65
.
Related information
Curve Speed Assist (CSA)
* (p. 316)
Curve Speed Assist (CSA)
* limitations
(p. 317)
Curve Speed Assist (CSA) *66
limitations
Curve Speed Assist (CSA) functionality may be reduced in certain situations. The drivershould be aware of the following limitations:
Curve Speed Assist (CSA) may have lim- ited performance on small roads and indensely populated areas.
At off-ramps or intersections, CurveSpeed Assist (CSA) may temporarilyswitch off.
If the satellite navigator's 67
map data is
not updated, Curve Speed Assist (CSA)may have limited functionality.
Curve Speed Assist (CSA) functionality may be limited if the satellite navigator 67
has lost contact with the satellite system.
On new or rebuilt roads, map data may be incorrect.
The risk of reduced grip due to adverseweather or road conditions is not takeninto account when calculating suitablecornering speed.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Related information

Curve Speed Assist (CSA)
* (p. 316)
Activating or deactivating Curve Speed Assist (CSA)
* (p. 317)
Camera/radar sensor limitations (p. 390)
65
These alternatives are market dependent.
66 This function is only available on some markets.
67 Only with Volvo Sensus Navigation * installed.

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* Option/accessory.319
WARNING
The driver should be aware that if condi- tions suddenly change when using PassingAssistance, the function may implement anundesired acceleration in certain condi-tions. Some situations should be avoided, e.g. if: the vehicle is approaching an exit in the same direction as passing would nor-mally occur
the vehicle ahead slows before yourvehicle has had time to switch to thepassing lane
traffic in the passing lane slows down
Situations of this type can be avoided by temporarily putting Adaptive Cruise Controlor Pilot Assist in standby mode.
Related information
Passing assistance
* (p. 318)
Adaptive Cruise Control
* (p. 294)
Pilot Assist
* (p. 304)
Adaptive Cruise Control
* standby mode
(p. 299)
Pilot Assist
* standby mode (p. 310)
Collision risk warning from driver support
The driver support systems Adaptive Cruise Control * and Pilot Assist * can help alert the
driver if the distance to the vehicle ahead suddenly decreases to an unsafe distance.
Collision warning audible signal and symbol
Audible signal at risk of collision
Collision warning symbol
Camera/radar sensor distance monitoring
Adaptive Cruise Control and Pilot Assist use approx. 40% of the braking capacity. If a sit-uation requires more braking force than driversupport can provide, and if the driver does not apply the brakes, a warning light and audible warning signal will be activated to alert thedriver that immediate action is required.
WARNING
The driver support system only issues a warning for vehicles detected by its radarunit – thus, a warning may come after adelay or not at all. Never wait for a warning.Apply the brakes when necessary.
Collision warning symbol on the windshield
In vehicles equipped with a head-up display *,
a flashing warning symbol will be displayed on the windshield.
NOTE
Visual warnings on the windshield may be difficult to notice in cases of strong sun-light, reflections, extreme light contrasts,or if the driver is wearing sunglasses or isnot looking straight ahead.

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DRIVER SUPPORT
* Option/accessory.
324
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.
NOTE
Driver support can keep the vehicle sta- tionary for no more than 5 minutes – afterthat time the parking brake is applied andthe function is deactivated. The parking brake must be released before driver support can be reactivated.
Deactivation of the Auto-hold brake function
In certain situations, auto-hold will be deacti- vated when the vehicle is at a standstill andthe function will go into standby mode. This means that the brakes will be released and the vehicle could begin to roll. The driver mustactively apply the brakes to keep the vehiclestationary. This can occur if:
The driver depresses the brake pedal.
The parking brake is applied.
The gear selector is moved to the
P, N or
R position.
The driver puts Adaptive Cruise Control or Pilot Assist in standby mode.
Auto Activate Parking BrakeThe parking brake will be applied if the func-tion is keeping the vehicle stationary using thebrakes and:
The driver opens the door or unbuckleshis/her seat belt.
The function has kept the vehicle at astandstill for more than approx. 5 minutes.
The brakes overheat.
The driver switches off the engine.
Related information
Driver support systems (p. 278)
Adaptive Cruise Control
* (p. 294)
Pilot Assist
* (p. 304)
Brake functions (p. 403)
Lane Keeping Aid
Lane Keeping Aid (LKA 69
) 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.

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327
Selecting type of assistance for Lane Keeping Aid
The driver can determine what types of assis- tance Lane Keeping Aid (LKA 71
) should pro-
vide if the vehicle veers from its lane.
1. Select SettingsMy CarIntelliSafein the center display's Top view.
2. Under
Lane Keeping Aid Mode, select
what assistance the function should pro- vide:

Assist the driver will receive steering
assistance but no warning.

Warning – the driver is only warned
through vibrations in the steering wheel.

Both – the driver receives steering
assistance and a warning through vibrations in the steering wheel.
Related information
Lane Keeping Aid (p. 324)
Lane Keeping Aid limitations
In certain demanding driving conditions, Lane Keeping Aid (LKA 72
) may not be able to prop-
erly assist the driver. In these situations, it is recommended that the function be deacti-vated.
Examples of such situations include:
road work
winter driving conditions
poor road surfaces
a very sporty driving style
bad weather with reduced visibility
roads with indistinct or no lane markings
sharp edges or lines other than the lane's side markings
when speed-dependent power steeringwheel resistance is working at reducedpower – e.g. during cooling due to over-heating.
The function cannot detect barriers, railings orsimilar obstacles at the side of the lane.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Related information
Lane Keeping Aid (p. 324)
Speed-dependent steering wheel resis- tance (p. 278)
Camera/radar sensor limitations (p. 390)
70
Lane Keeping Aid
71 Lane Keeping Aid
72 Lane Keeping Aid

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328
Lane Keeping Aid symbols and messages
A number of symbols and messages related to Lane Keeping Aid (LKA 73
) may be dis- played in the instrument panel. Several exam- ples are provided below.
Symbol Message Meaning
Driver support system Reduced functionality Service requiredThe system is not functioning as intended. Contact a workshop
A
.
Windscreen sensor Sensor blocked, see Owner's manualThe camera's ability to detect the lane in front of the vehicle is reduced.
73 Lane Keeping Aid

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331
City Safety™
City Safety 75
can alert the driver with light,
sound and pulsations in the brake pedal to help the driver detect pedestrians, cyclists,large animals and vehicles.
Function overview
Audible signal at risk of collision
Collision warning symbol
Camera/radar sensor distance monitoring
The function can help the driver avoid a colli- sion in e.g. stop-and-go traffic, when changesin the traffic ahead and driver distraction couldlead to an incident. City Safety activates abrief, forceful braking in an attempt to stopyour vehicle immediately behind the vehicle orobject ahead. The function assists the driver by automati-cally applying the brakes if there is an immi-nent risk of a collision and the driver does notreact in time by braking and/or steering away. City Safety is activated in situations in which the driver should have applied the brakesmuch earlier, which means that the systemwill not be able to assist the driver in all situa-tions. The function is designed to be activatedas late as possible to help avoid unnecessaryintervention. Automatic braking will only beapplied after or during a collision warning. Normally, the occupants of the vehicle will not be aware of City Safety except when the sys-tem intervenes when a collision is imminent.
WARNING

The function is supplementary driver support intended to facilitate drivingand help make it safer – it cannot han-dle all situations in all traffic, weatherand road conditions.
The driver is advised to read all sec-tions in the Owner's Manual about thisfunction to learn of its limitations,which the driver must be aware ofbefore using the function.
Driver support functions are not a sub-stitute for the driver's attention andjudgment. The driver is always respon-sible for ensuring the vehicle is drivenin a safe manner, at the appropriatespeed, with an appropriate distance toother vehicles, and in accordance withcurrent traffic rules and regulations.
Related information
Driver support systems (p. 278)
City Safety sub-functions (p. 332)
Setting a warning distance for City Safety(p. 334)
Detecting obstacles with City Safety(p. 335)
75
This function is not available on all markets.

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338
Limitations of City Safety in crossing traffic
In certain situations, it may be difficult for
City Safety to help the driver avoid a collisionwith crossing traffic.
For example:
On slippery roads when Electronic Stabil- ity Control (ESC) is actively operating.
If an approaching vehicle is detected at alate stage.
If the oncoming vehicle is partiallyobstructed by another vehicle or object.
If the oncoming vehicle's headlights areoff.
If the oncoming vehicle is moving errati-cally and e.g. suddenly changes lanes at alate stage.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Related information
City Safety in crossing traffic (p. 337)
City Safety limitations (p. 341)
Camera/radar sensor limitations (p. 390)
City Safety steering assistance for evasive maneuver City Safety steering assistance can help the driver steer away from a vehicle/obstaclewhen it is not possible to avoid a collision bybraking alone. City Safety steering assistanceis always activated and cannot be switchedoff.
Your vehicle swerves away
Slow-moving/stationary vehicle or obsta- cle.
City Safety helps provide assistance bystrengthening the driver's steering move-ments, but only if the driver has begun evasiveaction and the system detects that the driver'ssteering movements are not sufficient to avoida collision. The brake system is used simultaneously to further strengthen steering movements. The

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339
function also helps stabilize the vehicle after it has passed the obstacle. City Safety steering assistance can detect:
vehicles
cyclists
pedestrians
large animals
Related information

City Safety
™ (p. 331)
City Safety steering assistance limitations during evasive maneuvers (p. 339)
City Safety limitations (p. 341)
City Safety steering assistance limitations during evasivemaneuvers
City Safety steering assistance may have lim- ited functionality in certain situations and notintervene, e.g.:
at speeds outside the range of 50-100 km/h (30-62 mph)
if the driver does not take evasive action
if speed-dependent power steering wheelresistance is working at reduced power –e.g. during cooling due to overheating.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Related information
City Safety steering assistance for evasive maneuver (p. 338)
City Safety limitations (p. 341)
Speed-dependent steering wheel resis-tance (p. 278)
Camera/radar sensor limitations (p. 390)
Automatic braking during delayed evasive maneuvers with CitySafety
City Safety 80
can assist the driver by auto-
matically braking the vehicle when it is not possible to avoid a collision by steering alone.
City Safety assists the driver by periodically attempting to predict possible "escaperoutes" to the sides of the vehicle in the eventa slow-moving or stationary vehicle were to bedetected at a late stage.
Your vehicle (1) cannot detect any potential escape routes for veering away from the vehicle ahead (2)and may therefore apply the brakes at an earlierstage.
Own vehicle
Slow-moving/stationary vehicles
80 This function is not available on all markets.

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341
City Safety limitationsCity Safety 81
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 82
) 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 or radar sen-sor is obstructed, it may be difficult for CitySafety to detect pedestrians, large animals,cyclists, vehicles or lane markings in front ofthe vehicle. City Safety functionality maytherefore be reduced. 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.
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.
81 This function is not available on all markets.
82 Electronic Stability Control

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Important warnings
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.