ESP VOLVO S90 TWIN ENGINE 2020 Service Manual

DRIVER SUPPORT
* Option/accessory.
304
Passing assistance Passing assistance can assist the driver when passing other vehicles. The function can be used with Adaptive Cruise Control * or Pilot
Assist *.
How passing assistance worksWhen Adaptive Cruise Control or Pilot Assist is following another vehicle and you indicatethat you intend to pass that vehicle by using the turn signal 47
, the system will begin accel-
erating toward the vehicle ahead before your
vehicle has moved into the passing lane. The function will then delay a speed reduction to avoid early braking as your vehicleapproaches a slower-moving vehicle. The function remains active until your vehicle has passed the other vehicle.
WARNING
Please note that this function can be acti- vated in more situations than just passinganother vehicle, such as when a directionindicator is used to indicate a lane changeor before exiting to another road – the vehi-cle will then briefly accelerate.
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. 268)
Using passing assistance (p. 304)
Adaptive Cruise Control
* (p. 278)
Pilot Assist
* (p. 287)
Using passing assistance Passing assistance can be used with Adap- tive Cruise Control * or Pilot Assist *. Several
conditions must be met for passing assis- tance to be possible.
In order to activate passing assistance:
your vehicle must be following a vehicle ahead (target vehicle)
your vehicle's
current speed must be
at least 70 km/h (43 mph)
the set speed
must be high enough to
safely pass another vehicle.
To start passing assistance:
–Turn on the left turn signal.
> Passing assistance will start.
47 Only the left-hand turn signal for left-hand drive vehicles, or right-hand turn signal for right-hand drive vehicles.

DRIVER SUPPORT
* Option/accessory.
306
Radar sensor type approval
The type approval for the vehicle's radar units for adaptive cruise control * (ACC 48
), Pilot
Assist * and BLIS *49
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

DRIVER SUPPORT
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309
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.

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DRIVER SUPPORT
310
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 50
.
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 50
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 50
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.
50 An authorized Volvo workshop is recommended.

DRIVER SUPPORT
314
City Safety™
City Safety 51
can alert the driver with light,
sound and pulsations in the brake pedal to help the driver detect pedestrians, cyclists,large animals and vehicles that appear sud-denly.
Location of the camera and radar sensor.
City Safety can help prevent a collision or lower the vehicle's speed at the point ofimpact. City Safety is an aid intended to assist the driver if a collision with a pedestrian, large ani-mal, cyclist or vehicle is imminent. City Safety can help the driver avoid a collision when e.g. driving in stop-and-go traffic, whenchanges in the traffic ahead and driver distrac-tion could lead to an incident. 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 activates a brief, forceful braking in an attempt to stop your vehicle immediatelybehind the vehicle or object ahead. 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. City Safety is designed to be activated as late as possible to help avoid unnecessary inter-vention. Automatic braking will only be appliedafter 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. 268)
City Safety sub-functions (p. 315)
Setting a warning distance for City Safety(p. 317)
Detecting obstacles with City Safety(p. 318)
51
This function is not available on all markets.

DRIVER SUPPORT
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319
For good performance, the system's function for cyclist detection needs the clearest possi-ble information about the contours of the bicy-cle and of the cyclist's head, arm, shoulders,legs, torso and lower body in combinationwith normal human movements. If large portions of the cyclist's body or the bicycle itself are not visible to the function'scamera, it will not be able to detect a cyclist. The system can only detect adult cyclists rid- ing on bicycles intended for adults.
WARNING
City Safety is supplementary driver sup- port, but it cannot detect all cyclists in allsituations and, for example, cannot see:
partially obscured cyclists.
cyclists if the background contrast of the cyclist is poor - warning and brakeinterventions may then be late or notoccur at all.
cyclists in clothing that hides theirbody contour.
bikes loaded with large objects.
The driver is always responsible for ensur- ing that the vehicle is driven correctly andwith a safety distance suitable for thespeed.
Pedestrians
Examples of what the system considers to be a pedestrian: clear body contours.
For good performance, the system's function for pedestrian detection needs the clearestpossible information about the contours of thepedestrian's head, arm, shoulders, legs, torsoand lower body in combination with normalhuman movements. In order to detect a pedestrian, there must be a contrast to the background, which coulddepend on clothing, weather conditions, etc. Ifthere is little contrast, the person may bedetected late or not at all, which may result ina delayed reaction from the system or no reac-tion at all. City Safety can detect pedestrians even in dark conditions if they are illuminated by thevehicle's headlights.
WARNING
City Safety is supplementary driver sup- port, but it cannot detect all pedestrians inall situations and, for example, cannot see:
partially obscured pedestrians, people in clothing that hides their body con-tour or pedestrians shorter than 80 cm(32 in.).
pedestrians if the background contrastof the pedestrians is poor - warningand brake interventions may then belate or not occur at all.
pedestrians who are carrying largeobjects.
The driver is always responsible for ensur- ing that the vehicle is driven correctly andwith a safety distance suitable for thespeed.

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DRIVER SUPPORT
320
Large animals
Examples of what City Safety would interpret as a large animal: stationary or moving slowly and withclear body contours.
For good performance, the system's function for detecting large animals (e.g. moose,horses, etc.) needs the clearest possible infor-mation about body contours. This entailsbeing able to detect the animal straight fromthe side in combination with normal move-ments for that animal. If parts of the animal's body are not visible to the function's camera, the system will not beable to detect the animal. City Safety can detect large animals even in dark conditions if they are illuminated by thevehicle's headlights.
WARNING
City Safety is supplementary driver sup- port, but it cannot detect all large animalsin all situations and, for example, cannotsee: partially obscured larger animals.
larger animals seen from the front or from behind.
running or fast moving larger animals.
larger animals if the contrast of the ani-mal's background is poor - warningand brake interventions may thenoccur late or not at all.
smaller animals such as cats and dogs.
The driver is always responsible for ensur- ing that the vehicle is driven correctly andwith a safety distance suitable for thespeed.
Related information
City Safety
™ (p. 314)
City Safety limitations (p. 324)
City Safety in crossing traffic City Safety 55
can assist the driver when turn-
ing into the path of an oncoming vehicle in an intersection.
Sector in which City Safety can detect an oncoming vehicle in crossing traffic.
In order for City Safety to detect an oncomingvehicle in situations where there is a risk of acollision, that vehicle must be within the sec-tor in which City Safety can analyze the situa-tion. The following criteria must also be met:
your vehicle's speed must be at least 4 km/h (3 mph)
your vehicle must be making a left turn
the oncoming vehicle's headlights mustbe on
55
This function is not available on all markets.

DRIVER SUPPORT
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325
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.
Other limitations
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.

DRIVER SUPPORT
* Option/accessory.
328
Rear Collision Warning *59
The Rear Collision Warning 60
(RCW) function
can help the driver avoid rear-end collisions from vehicles approaching from behind.
The function can alert drivers of following vehi- cles of the risk of a collision by rapidly flashingthe turn signals. If, at a speed below 30 km/h (20 mph), the function detects that the vehicle is in dangerof being hit from behind, the seat belt tension-ers may tension the front seat belts. TheWhiplash Protection System will also be acti-vated in a collision. Immediately before a collision from behind, the function may also activate the brakes inorder to reduce the forward acceleration of thevehicle during the collision. However, thebrakes will only be applied if your vehicle isstationary. The brakes will be immediatelyreleased if the accelerator pedal is depressed. The function is automatically activated each time the engine is started.
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. 268)
Rear Collision Warning
* limitations
(p. 328)
Whiplash Protection System (p. 46)
Rear Collision Warning
*61
limitations
In some situations, it may be difficult for Rear Collision Warning (RCW) to warn the driverof a collision risk.
This may be the case if: the vehicle approaching from the rear is detected at a late stage
the vehicle approaching from the rearchanges lanes at a late stage
NOTE
In certain markets RCW does
not warn
with the direction indicators due to local traffic regulations – in such cases, that partof the function is deactivated.
NOTE
The warning with direction indicators for Rear Collision Warning * is deactivated if
the collision warning distance in the City Safety function is set to the lowest level "
Late".
The seat belt tensioning and braking func- tions remain active.
59 Warning of collision from the rear.
60 This function is not available on all markets.
61 Warning of collision from the rear.

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DRIVER SUPPORT
* Option/accessory.
330 If a passing vehicle's speed is more than 15 km/h (9 mph) faster than your vehicle, BLISwill not react.
NOTE
The light illuminates on the side of the vehicle where the system has detected thevehicle. If the vehicle is passed on bothsides simultaneously, both lights come on.
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. 268)
Activating or deactivating BLIS (p. 330)
BLIS limitations (p. 331)
BLIS messages (p. 332)
Activating or deactivating BLIS
The BLIS 63
function can be activated or deac-
tivated.
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.
If BLIS is activated when the engine is started,the indicator lights in the rearview mirrors willflash once. If BLIS is deactivated when the engine is turned off, it will remain off the next time theengine is started and the indicator lights willnot illuminate.
Related information
BLIS
* (p. 329)
BLIS limitations (p. 331)
63
Blind Spot Information