sensor VOLVO XC90 TWIN ENGINE 2020 Workshop Manual

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DRIVER SUPPORT
* Option/accessory.
314
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
positions
the driver puts the function in standby mode.
Auto Activate Parking BrakeIn certain situations, the parking brake will beapplied to keep the vehicle at a standstill. This occurs if the function is keeping the vehi- cle stationary using the brakes 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 man-ually.
Related information
Driver support systems (p. 280)
Adaptive Cruise Control
* (p. 290)
Pilot Assist
* (p. 300)
Brake functions (p. 417)
Drive mode for driver support The driver can choose different drive modes to determine how driver support shouldmaintain a time interval to the vehicle ahead.
Settings are made using the
DRIVE MODE
controls. Select one of the following:

Pure - Driver support will focus on provid-
ing good fuel economy, which will increase the time interval to the vehicleahead.

Hybrid - Driver support will focus on fol-
lowing the set time interval to the vehicle ahead as smoothly as possible.

Power - Driver support will focus on fol-
lowing the set time interval to the vehicle ahead more exactly, which could meanfaster acceleration and heavier braking.
Related information
Driver support systems (p. 280)
Drive modes (p. 433)
Setting time interval to the vehicle ahead(p. 312)

DRIVER SUPPORT
* Option/accessory.
316
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 49
.
Related information
Curve Speed Assist (CSA)
* (p. 315)
Curve Speed Assist (CSA)
* limitations
(p. 316)
Curve Speed Assist (CSA) *
limitations
Curve Speed Assist (CSA) functionality may be reduced in certain situations. This functionis only available on some markets.
The driver should 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 50
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 50
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. 315)
Camera/radar sensor limitations (p. 322)
49
These alternatives are market dependent.
50 Only with Volvo Sensus Navigation * installed.

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DRIVER SUPPORT
* Option/accessory.
318
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 tem-porarily putting Adaptive Cruise Control or
Pilot Assist in standby mode.
Related information
Passing assistance (p. 317)
Adaptive Cruise Control
* (p. 290)
Pilot Assist
* (p. 300)
Adaptive Cruise Control
* standby mode
(p. 295)
Pilot Assist
* standby mode (p. 305)
Radar sensor
The radar sensor is used by several driver support systems to detect other vehicles.
Location of radar sensor.
The radar sensor is used by the following func- tions:
Distance Alert
*
Adaptive Cruise Control
*
Pilot Assist
*
Lane Keeping Aid
City Safety
Any modifications to the radar sensor maymake its use illegal.
Related information
Driver support systems (p. 280)
Camera/radar sensor limitations (p. 322)
Recommended camera and radar sensormaintenance (p. 326)
Radar sensor type approval (p. 319)

DRIVER SUPPORT
}}
* Option/accessory.319
Radar sensor type approval
The type approval for the vehicle's radar units for adaptive cruise control * (ACC 52
), Pilot
Assist * and BLIS *53
are found here.
Market ACC & PA BLIS Type approval Canada ✓
FCC ID: L2C0054TR IC: 3432A-0054TR FCC ID: L2C0055TR IC: 3432A-0055TR
✓ Canada Standard RSS-310
USA ✓
FCC ID: L2C0054TR IC: 3432A-0054TRFCC ID: L2C0055TR IC: 3432A-0055TR
✓ FCC ID: NBG01RS4
This device complies with Part 15 of the FCC Rules and with Industry Canada license-exempt RSS standard(s). Operation is subjectto the following two conditions: (1) This device may not cause harmful interference, and (2) This device must accept any interference received, including interference that maycause undesired operation. Ce dispositif de radiocommunication de catégorie II respecte la norme CNR-310d

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DRIVER SUPPORT
* Option/accessory.
320 environment. This equipment should be installed and operated with minimum distanceof 20 cm between the radiator and your body. For detailed information about type approval, please visit support.volvocars.com.
Related information

Radar sensor (p. 318)
Adaptive Cruise Control
* (p. 290)
Pilot Assist
* (p. 300)
BLIS
* (p. 342)

DRIVER SUPPORT
* Option/accessory.321
Camera The camera is used by several driver support systems to e.g. detect lane marker lines orroad signs.
Location of the camera.
The camera is used by the following functions:
Adaptive Cruise Control
*
Pilot Assist
*
Lane Keeping Aid
*
Steering assistance at risk of collision
City Safety
Driver Alert Control
*
Road Sign Information
*
Active high beams
*
Park Assist
*
Related information
Driver support systems (p. 280)
Camera/radar sensor limitations (p. 322)
Recommended camera and radar sensor maintenance (p. 326)

DRIVER SUPPORT
322
Camera/radar sensor limitations The camera and radar sensor used by several of the driver support functions has certainlimitations, which also affect the functionsusing the camera and radar sensor. The drivershould be aware of the following limitations:
Camera and radar
Obstructed camera
The area marked in the illustration must be cleaned regularly and kept free of decals, objects, solar film,etc.
The camera is located on the upper interior section of the windshield along with the radarsensor. Do not place, affix or mount anything on the inside or outside of the windshield, or in frontof or around the camera and radar sensor –this could disrupt camera and radar-basedfunctions. It could cause functions to bereduced, deactivated completely or to producean incorrect function response.If this symbol and the message “
Windscreen sensor Sensor
blocked, see Owner's manual” is
displayed in the instrument panel, it
means that the camera and radar sensor are unable to detect other vehicles, cyclists,pedestrians and large animals in front of thevehicle and that the vehicle's camera andradar-based functions may be obstructed.
The following table shows some of the situa- tions that can cause the message to be dis-played, and suggested actions:
Cause Action
The area of the windshield in front of the camera/radar sensor is dirty or covered by ice or snow. Clean the windshield in front of the camera/radar sensor and remove dirt, iceand snow.
Thick fog, heavy rain or snow is blocking the radar signals or thecamera's range of visibility. No action. Heavy precipitation may sometimes prevent the camera/radar sensorfrom functioning.

DRIVER SUPPORT
}}
323
CauseAction
Water or snow is spraying/swirling up and blocking the radar signals or the camera's range of visibility. No action. Very wet or snow-covered roads may sometimes prevent the cam-era/radar sensor from functioning.
There is dirt between the inside of the windshield and the cam-era/radar sensor. Consult a workshop to have the area of the windshield on the inside of the cam-era's casing cleaned. An authorized Volvo workshop is recommended.
Bright sunlight. No action. The camera/radar sensor will reset automatically when lighting con-ditions improve.
High temperatures
If the temperature in the passenger compart- ment is very high, the camera/radar sensorwill switch off temporarily forapprox. 15 minutes after the engine is startedto protect its electronic components. Whenthe temperature has cooled sufficiently, thecamera/radar sensor will automatically restart.
Damaged windshield
NOTE
Failure to take action could result in reduced performance for the driver supportsystems that use the camera and radarunit. It could cause functions to bereduced, deactivated completely or to pro-duce an incorrect function response.
To avoid the risk of malfunction of the driver support systems that use the radar sensor, thefollowing also apply:
If there are cracks, scratches or stonechips on the windshield in front of any ofthe camera and radar sensor "windows"and this covers an area ofabout 0.5 × 3.0 mm (0.02 × 0.12 in.) ormore, contact a workshop to have the windshield replaced 54
.
Volvo advises
against repairing cracks,
scratches or stone chips in the area in front of the camera and radar sensor – theentire windshield should instead bereplaced.
Before replacing the windshield, contact a workshop 54
to verify that the right wind-
shield has been ordered and installed.
The same type of windshield wipers or wipers approved by Volvo should be usedfor replacement.
If the windshield is replaced, the cameraand radar sensor must be recalibrated by a workshop 54
to help ensure proper func-
tioning of all of the vehicle's camera and radar-based systems.
Radar
Vehicle speed
The radar sensor's ability to detect a vehicle ahead is significantly reduced if the speed ofthe vehicle ahead differs greatly from yourvehicle's speed.
54 An authorized Volvo workshop is recommended.

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DRIVER SUPPORT
* Option/accessory.
324
Limited field of vision
The radar sensor has a limited field of vision. In some situations, it may detect a vehicle laterthan expected or not at all.
The radar sensor's field of vision.
The radar sensor's detection of vehicles very close to your vehicle may be delayedin certain situations, e.g. if a vehicle pulls in between your vehicle and the vehicledirectly ahead.
Small vehicles, such as motorcycles, or vehicles that are not driving in the centerof the lane may remain undetected.
In curves, the radar may detect the wrong vehicle or lose sight of a target vehicle.
Low trailers
Low trailer in the radar shadow.
Low trailers may also be difficult or even impossible for the radar to detect. The driver should be extra alert when driving behind vehi- cles towing low trailers when Adaptive Cruise Control
* or Pilot Assist * is activated.
Camera
Reduced visibility
Cameras have the same limitations as the human eye. In other words, their “vision" isimpaired by adverse weather conditions suchas heavy snowfall/rain, dense fog, swirlingdust/snow, etc. These conditions may reduce the function of systems that depend on thecamera or cause these systems to temporarilystop functioning. Strong sunlight, reflections from the road sur- face, ice or snow covering the road, a dirtyroad surface, or unclear lane marker lines maydrastically reduce the camera

DRIVER SUPPORT
* Option/accessory.325
Park Assist Camera *
Blind sectors
There are "blind" sectors between the cameras' fields of vision.
With Park Assist Camera's 360° view *
selected, objects/obstacles may not be detected if they are located in the "joints"where the edges of the individual cameraviews meet.
WARNING
Even if it seems as though only a fairly small section of the screen image isobstructed, this may mean that a relativelylarge sector is hidden and obstacles theremay not be detected until they are verynear the vehicle.
Defective camera
If a camera sector is dark and contains this symbol, thisindicates that the camera isnot functioning properly. See the following illustration for an example.
The vehicle's left-side camera is malfunctioning.
A dark camera sector may also be displayed in the following situations, but without the
defective camera symbol: a door is open
the tailgate is open
a rearview mirror is folded in
Lighting conditions
The camera image is automatically adjusted according to the current lighting conditions.This means that the brightness and quality of the image may vary slightly. Poor lighting con-ditions may result in reduced image quality.
Rear Park Assist Camera
WARNING
Be extra cautious when reversing if this symbol isshown when a trailer, bikecarrier or similar isattached and electricallyconnected to the vehicle. The symbol indicates that
the rear parking assist sensors are deacti-
vated and will not warn of any obstacles.
NOTE
A bike carrier and other accessories moun- ted on the rear of the vehicle can obscurethe camera's view.
Related information
Camera (p. 321)
Radar sensor (p. 318)
Recommended camera and radar sensor maintenance (p. 326)
Park Assist Camera
* (p. 375)