2021 VOLVO V90 CROSS COUNTRY brake sensor

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DRIVER SUPPORT
* Option/accessory.
300 such as Electronic Stability Control (ESC
45
).
The driver opens the door.
The driver unbuckles the seat belt.
The engine speed (rpm) is too low/high.
One or more of the wheels lose traction.
The brake temperature is high.
The parking brake is applied.
The camera and radar unit is covered by snow or heavy rain (the camera lens/radarwaves are blocked).
Your vehicle's speed goes below 5 km/h(3 mph) and ACC cannot determine if thevehicle ahead is stationary or if it isanother object, e.g. a speed bump.
Your vehicle's speed goes below 5 km/h(3 mph) and the vehicle ahead turns sothat ACC no longer has a vehicle to follow.
Related information

Adaptive Cruise Control
* (p. 294)
Selecting and activating Adaptive Cruise Control
* (p. 297)
Deactivating Adaptive Cruise Control
*
(p. 298)
Adaptive Cruise Control
* limitations
(p. 300)
Adaptive Cruise Control *46
limitations Adaptive Cruise Control (ACC 47
) may have
limited functionality in certain situations.
Steep roads and/or heavy loadsAdaptive Cruise Control is primarily intended to be driven on flat roads. The function maynot be able to maintain the correct time inter-val to the vehicle ahead when driving downsteep hills. The driver should be extra attentiveand prepared to apply the brakes. Do not use Adaptive Cruise Control if the vehi- cle is carrying a heavy load or towing a trailer.
Drive mode unavailableThe Off Road drive mode cannot be selected
if Adaptive Cruise Control is activated.
WARNING
This is not a collision avoidance sys- tem. The driver is always responsibleand must intervene if the system failsto detect a vehicle ahead.
The function does not brake for peopleor animals and does not brake for smallvehicles, such as bikes and motorcy-cles. Similarly, it does not brake for lowtrailers, oncoming, slow-moving or sta-tionary vehicles and objects.
Do not use the function in demandingsituations, such as in city traffic, atintersections, on slippery surfaces,with a lot of water or slush on the road,in heavy rain/snow, in poor visibility, onwinding roads, or on on/off ramps.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Related information

Adaptive Cruise Control
* (p. 294)
Camera/radar sensor limitations (p. 390)
45
Electronic Stability Control
46 Depending on market, this function can be either standard or optional.

DRIVER SUPPORT
* Option/accessory.
304
Pilot Assist *53
Pilot Assist can help the driver keep the vehi- cle in the current traffic lane and maintain aneven speed and a set time interval to thevehicle ahead.
Get to know Pilot Assist
The camera/radar sensor monitors the distance to the vehicle ahead and detects lane markings.
Camera and radar sensor
Distance monitor
Lane marker line monitors
Pilot Assist helps to steer the vehicle, and you may need to drive a few miles with Pilot Assistbefore you feel completely at home with the function. It is important to be familiar with all of the function's applications and limitations in order to take advantage of all it has to offer. The Pilot Assist function is primarily intended for use on highways and other major roadswhere it can help provide a more comfortableand relaxing driving experience. The driver sets the desired speed and distance to the vehicle ahead. Pilot Assist monitors thedistance to the vehicle ahead and the trafficlane's side markers using the camera. The sys-tem maintains the set time interval to the vehi-cle ahead by automatically adjusting your vehi-cle's speed and keeps your vehicle in its laneby providing steering assistance. If the Curve Speed Assist (CSA)
* function is
activated, it may also affect the vehicle's speed. Pilot Assist regulates speed by accelerating and braking. It is normal for the brakes to emita slight sound when they are being used toadjust speed. Pilot Assist is designed to:
smoothly regulate speed. The driver must apply the brakes in situations requiringimmediate braking. For example, whenthere are great differences in speedbetween vehicles or if the vehicle aheadbrakes suddenly. Due to limitations in the camera and radar sensor, braking mayoccur unexpectedly or not at all.
follow a vehicle ahead in the same laneand maintain a time interval to that vehicleset by the driver. If the radar sensor doesnot detect a vehicle ahead, it will insteadmaintain the speed set by the driver. Thiswill also happen if the speed of the vehicleahead exceeds the set speed for your vehi-cle.
The vehicle's position in the traffic
lane
When Pilot Assist helps to steer, it attempts toposition the vehicle halfway between the visi-ble lane marking lines. For a smoother drive, itis a good idea to allow the vehicle to find agood position. The driver can always adjustthe position him/herself by increasing steeringinput. It is important for the driver to makesure the vehicle is positioned safely in the lane. If Pilot Assist does not position the vehicle appropriately in the lane, the driver should turnoff Pilot Assist or switch to Adaptive Cruise Control *.
53
Depending on market, this function can be either standard or optional.

DRIVER SUPPORT
* Option/accessory.313
information from map data, which could cause variations in performance.
Pilot Assist will be switched off if thespeed-dependent power steeringwheel resistance is working at reducedpower, e.g. during cooling due to over-heating.
WARNING
Pilot Assist should only be used if there are clear lane lines painted on each side of thelane. All other use will increase the risk ofcontact with nearby obstacles that cannotbe detected by the functions.
WARNING
This is not a collision avoidance sys- tem. The driver is always responsibleand must intervene if the system failsto detect a vehicle ahead.
The function does not brake for peopleor animals and does not brake for smallvehicles, such as bikes and motorcy-cles. Similarly, it does not brake for lowtrailers, oncoming, slow-moving or sta-tionary vehicles and objects.
Do not use the function in demandingsituations, such as in city traffic, atintersections, on slippery surfaces,with a lot of water or slush on the road,in heavy rain/snow, in poor visibility, onwinding roads, or on on/off ramps.
The driver can always correct or adjust steer-ing assistance provided by Pilot Assist by turn-ing the steering wheel to the desired position.
Steep roads and/or heavy loadsPilot Assist is primarily intended to be drivenon flat roads. The function may not be able tomaintain the correct time interval to the vehi-cle ahead when driving down steep hills. Thedriver should be extra attentive and preparedto apply the brakes. Do not use Pilot Assist if the vehicle is carryinga heavy load or towing a trailer.
NOTE
Pilot Assist cannot be activated if a trailer, bike carrier or similar is connected to thevehicle electrical system.
Drive mode unavailableThe Off Road drive mode cannot be selected
when Pilot Assist is activated.
NOTE
The function uses the vehicle's camera and radar sensor, which has certain generallimitations.
Related information
Pilot Assist
* (p. 304)
Camera/radar sensor limitations (p. 390)
Speed-dependent steering wheel resis- tance (p. 278)
Drive modes
* (p. 419)

DRIVER SUPPORT
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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.

DRIVER SUPPORT
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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.

DRIVER SUPPORT
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

DRIVER SUPPORT
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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.