brake sensor VOLVO S60 TWIN ENGINE 2019 User Guide

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WARNING
The function is supplementary driver sup-port intended to facilitate driving and helpmake it safer – it cannot handle all situa-tions in all traffic, weather and road condi-tions.
The driver is advised to read all sectionsin the Owner's Manual about this functionto learn of its limitations, which the drivermust be aware of before using the func-tion.
Driver support functions are not a substi-tute for the driver's attention and judg-ment. The driver is always responsible forensuring the vehicle is driven in a safemanner, at the appropriate speed, with anappropriate distance to other vehicles,and in accordance with current trafficrules and regulations.
Pilot Assist regulates speed by accelerating andbraking. It is normal for the brakes to emit a slightsound when they are being used to adjust speed.
Pilot Assist attempts to smoothly regulate speed.The driver must apply the brakes in situationsrequiring immediate braking. For example, whenthere are great differences in speed betweenvehicles or if the vehicle ahead brakes suddenly.
Due to limitations in the camera and radar sen-sor, braking may occur unexpectedly or not at all.
Pilot Assist is designed to follow a vehicle aheadin the same lane and maintain a time interval tothat vehicle set by the driver. If the radar sensordoes not detect a vehicle ahead, it will insteadmaintain the speed set by the driver. This will alsohappen if the speed of the vehicle aheadexceeds the set speed for your vehicle.

WARNING
This is not a collision avoidance system.The driver is always responsible and mustintervene if the system fails to detect avehicle ahead.
The function does not brake for people oranimals and does not brake for smallvehicles, such as bikes and motorcycles.Similarly, it does not brake for low trailers,oncoming, slow-moving or stationary vehi-cles and objects.
Do not use the function in demanding sit-uations, such as in city traffic, at intersec-tions, on slippery surfaces, with a lot ofwater or slush on the road, in heavy rain/snow, in poor visibility, on winding roads,or on on/off ramps.
CAUTION
Maintenance of driver support components
may only performed by a workshop31.

In curves and forks in the road
Pilot Assist is designed to interact with the driver.The driver should never wait for steering assis-tance from Pilot Assist, but instead should alwaysbe ready to increase his or her own steeringefforts, particularly in curves.
When the vehicle is approaching an off-rampor a fork in the road, the driver should steertoward the desired lane to indicate to PilotAssist the desired direction of travel.

Pilot Assist strives to keep the vehicle
in the center of the lane
When Pilot Assist provides steering assistance, itstrives to position the vehicle in the center of thelane between the lane markings. For the smooth-est driving experience possible, the driver shouldpermit the vehicle to find the optimal positioning.The driver should check that the vehicle is posi-tioned safely in the lane and can always adjustthe vehicle's position by applying more force tothe steering wheel.
If Pilot Assist does not position the vehicleappropriately in the lane, the driver should
31An authorized Volvo workshop is recommended.

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Standby mode due to action by the driver
Pilot Assist will be temporarily deactivated andput in standby mode if:
the brakes are applied.
the gear selector is moved to N.
a turn signal is used for more than 1 minute.
the vehicle is driven faster than the setspeed for more than 1 minute.
Temporarily increasing speed using the accelera-tor pedal, e.g. when passing another vehicle, willnot affect the setting. The vehicle will return tothe set speed when the accelerator pedal isreleased.
When the turn signals are used, Pilot Assist'ssteering assistance will be temporarily deacti-vated. When the turn signal is switched off, steer-ing assistance will be automatically reactivated ifthe traffic lane's side markings can still bedetected.

Automatic standby mode
Pilot Assist is dependent on other systems, such
as Electronic Stability Control (ESC32). If any ofthese other systems stops working, Pilot Assistwill automatically switch off.
WARNING
With automatic standby mode, the driver iswarned by an acoustic signal and a messageon the instrument panel.
The driver must then regulate vehiclespeed, apply the brakes if necessary, andmaintain a safe distance to other vehicles.
Adaptive Cruise Control may go into standbymode if, e.g.:
the driver opens the door.
the brake temperature is high.
the driver's hands are not on the steeringwheel.
the parking brake is applied.
the engine speed (rpm) is too low/high.
the driver unbuckles the seat belt.
one or more of the wheels lose traction.
the camera/radar sensor is covered by snowor heavy rain (the camera lens/radar wavesare blocked).
your vehicle's speed goes under 5 km/h(3 mph) and Pilot Assist cannot determine ifthe vehicle ahead is stationary or if it isanother object, e.g. a speed bump.
your vehicle's speed goes under 5 km/h(3 mph) and the vehicle ahead turns so thatPilot Assist no longer has a vehicle to follow.

Reactivating Pilot Assist from standby
mode
Note: This illustration is general and details may varydepending on model.
To reactivate Pilot Assist:
–Press the button on the steering wheel(1).
>Speed will be set to the most recentlystored speed.
32Electronic Stability Control

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The driver is responsible for ensuring thatthe vehicle maintains a suitable distancefrom such obstacles.
The camera and radar sensors do nothave the capacity to detect all oncomingobjects and obstacles in traffic environ-ments, e.g. potholes, stationary obstaclesor objects that completely or partiallyblock the route.
Pilot Assist does not "see" pedestrians,animals, etc.
The recommended steering input is lim-ited in force, which means that it cannotalways help the driver to steer and keepthe vehicle within the lane.
In vehicles equipped with SensusNavigation*, the function is able to useinformation from map data, which couldcause variations in performance.
Pilot Assist will be switched off if thespeed-dependent power steering wheelresistance is working at reduced power,e.g. during cooling due to overheating.
The driver can always correct or adjust steeringassistance provided by Pilot Assist by turning thesteering wheel to the desired position.

Steep roads and/or heavy loads
Pilot Assist is primarily intended to be driven onflat roads. The function may not be able to main-
tain the correct time interval to the vehicle aheadwhen driving down steep hills. The driver shouldbe extra attentive and prepared to apply thebrakes.
Do not use Pilot Assist if the vehicle is carry-ing a 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.

Other limitations
The Off Road drive mode cannot beselected when Pilot Assist is activated.

NOTE
The function uses the vehicle's camera andradar sensor, which has certain general limita-tions.

Related information
Pilot Assist (p. 281)
Camera/radar sensor limitations (p. 300)
Speed-dependent steering wheel resistance(p. 260)
Drive modes (p. 412)
Pilot Assist* symbols and messages
A number of symbols and messages relating toPilot Assist may be displayed in the instrumentpanel and/or the head-up display*.

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The previous illustration34 shows that Pilot Assistis set to maintain a speed of 110 km/h (68 mph)and that there is no target vehicle ahead to fol-low.
Pilot Assist will provide steering assistancebecause it can detect the lane's side markinglines.

Related information
Pilot Assist (p. 281)
Collision risk warning from driversupport
The driver support systems Pilot Assist and
Adaptive Cruise Control*35 can help alert thedriver if the distance to the vehicle ahead sud-denly decreases to an unsafe distance.
Collision warning audible signal and symbol.
Acoustic collision warning signal
Collision warning symbol
Camera/radar sensor distance monitoring
Driver support uses approx. 40% of the vehicle'sbraking capacity. If a situation requires morebraking force than driver support can provide, andif the driver does not apply the brakes, a warning
light and audible warning signal will be activatedto alert the driver that immediate action isrequired.
WARNING
The driver support system only issues a warn-ing for vehicles detected by its radar unit –thus, a warning may come after a delay or notat all. Never wait for a warning. Apply thebrakes when necessary.
Collision warning symbol on the windshield.
In vehicles equipped with a head-up display*, aflashing warning symbol will be displayed on thewindshield.
34Note: This illustration is general and details may vary depending on model.35Adaptive Cruise Control

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City Safety™
City Safety47 can alert the driver with light,sound and pulsations in the brake pedal to helpthe driver detect pedestrians, cyclists, large ani-mals and vehicles that appear suddenly – thevehicle will then attempt to automatically brake ifthe driver does not act within a reasonableamount of time.
Location of the camera and radar sensor.
City Safety can help prevent a collision or lowerthe vehicle's speed at the point of impact.
City Safety is an aid intended to assist the driverif a collision with a pedestrian, large animal,cyclist or vehicle is imminent.
City Safety can help the driver avoid a collisionwhen e.g. driving in stop-and-go traffic, when
changes in the traffic ahead and driver distractioncould lead to an incident.
The function assists the driver by automaticallyapplying the brakes if there is an imminent risk ofa collision and the driver does not react in time bybraking and/or steering away.
City Safety activates a brief, forceful braking in anattempt to stop your vehicle immediately behindthe vehicle or object ahead.
City Safety is activated in situations in which thedriver should have applied the brakes much ear-lier, which means that the system will not be ableto assist the driver in all situations.
City Safety is designed to be activated as late aspossible to help avoid unnecessary intervention.
Normally, the occupants of the vehicle will not beaware of City Safety except when the systemintervenes when a collision is imminent.

WARNING
The City Safety auto-brake function canprevent a collision or reduce collisionspeed, but to ensure full brake perform-ance the driver should always depress thebrake pedal – even when the car auto-brakes.
The warning and steering assistance areonly activated if there is a high risk of col-lision – you must therefore never wait forthe collision warning or City Safety tointervene.
Warnings and brake interventions forpedestrians and cyclists are disengagedat vehicle speeds over 80 km/h(50 mph).
City Safety does not activate auto-brakingintervention during heavy acceleration.
47This function is not available on all markets.

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Large animals
If there is a risk of colliding with a large animal,City Safety can help reduce your vehicle's speedby up to 15 km/h (9 mph).
The braking function for large animals is primarilyintended to mitigate the force of a collision athigher speeds. Braking is most effective atspeeds above 70 km/h (43 mph) and less effec-tive at lower speeds.

City Safety sub-functions
Function overview.
Acoustic collision warning signal
Collision warning symbol
Camera/radar sensor distance monitoring
City Safety carries out three steps in the follow-ing order:
1.Collision warning
2. Brake assistance
3. Auto-brake
Descriptions of what happens in these threesteps are provided below.
1 - Collision warning
The driver is first alerted to the risk of an immi-nent collision.
In vehicles equipped with a head-up display*, aflashing warning symbol will be displayed on thewindshield.
Collision warning symbol on the windshield.
NOTE
Visual warnings on the windshield may be dif-ficult to notice in cases of strong sunlight,reflections, extreme light contrasts, or if thedriver is wearing sunglasses or is not lookingstraight ahead.
City Safety can detect pedestrians, cyclists orvehicles that are stationary, are moving in thesame direction as your vehicle and are ahead ofyour vehicle. City Safety can also detect pedes-trians, cyclists or large animals that are crossingthe road in front of your vehicle.
If there is a risk of a collision with a pedestrian,large animal, cyclist or another vehicle, the driverwill be alerted with light, sound and pulsations inthe brake pedal. At lower speeds, during hardbraking or if the accelerator pedal is pressed, thebrake pedal pulsation warning will not be given.The intensity of the brake pedal pulsations variesaccording to the vehicle's speed.

2 - Brake assistance
If the risk of a collision increases after the colli-sion warning, brake support will be activated.
If the system determines that the pressure thedriver is exerting on the brake pedal is insufficientto prevent the collision, brake support willincrease pressure.

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WARNING
The driver support system only issues a warn-ing for obstacles detected by its radar sensor– thus, a warning may come after a delay ornot at all.
Never wait for a warning or assistance.Apply the brakes when necessary.

WARNING
The function is supplementary driver sup-port intended to facilitate driving and helpmake it safer – it cannot handle all situa-tions in all traffic, weather and road condi-tions.
The driver is advised to read all sectionsin the Owner's Manual about this functionto learn of its limitations, which the drivermust be aware of before using the func-tion.
Driver support functions are not a substi-tute for the driver's attention and judg-ment. The driver is always responsible forensuring the vehicle is driven in a safemanner, at the appropriate speed, with anappropriate distance to other vehicles,and in accordance with current trafficrules and regulations.
Related information
City Safety™ (p. 305)
Limitations of City Safety in crossing traffic(p. 312)
Limitations of City Safety incrossing traffic
In certain situations, it may be difficult for CitySafety to help the driver avoid a collision withcrossing traffic.
For example:
on slippery roads when Electronic StabilityControl (ESC) is actively operating
if an approaching vehicle is detected at a latestage
if the oncoming vehicle is partially obstructedby another vehicle or object
if the oncoming vehicle's headlights are off
if the oncoming vehicle is moving erraticallyand e.g. suddenly changes lanes at a latestage.

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NOTE
The function uses the vehicle's camera andradar sensor, which has certain general limita-tions.

Related information
City Safety in crossing traffic (p. 311)
City Safety limitations (p. 316)
Camera/radar sensor limitations (p. 300)
City Safety steering assistance forevasive maneuver
City Safety steering assistance can help thedriver steer away from a vehicle/obstacle when itis not possible to avoid a collision by brakingalone. City Safety steering assistance is alwaysactivated and cannot be switched off.
Your vehicle swerves away
Slow-moving/stationary vehicle or obstacle.
City Safety helps provide assistance by strength-ening the driver's steering movements, but only ifthe driver has begun evasive action and the sys-tem detects that the driver's steering movementsare not sufficient to avoid a collision.
The brake system is used simultaneously to fur-ther strengthen steering movements. The func-
tion also helps stabilize the vehicle after it haspassed the obstacle.
City Safety steering assistance can detect:
vehicles
cyclists
pedestrians
large animals

WARNING
The function is supplementary driver sup-port intended to facilitate driving and helpmake it safer – it cannot handle all situa-tions in all traffic, weather and road condi-tions.
The driver is advised to read all sectionsin the Owner's Manual about this functionto learn of its limitations, which the drivermust be aware of before using the func-tion.
Driver support functions are not a substi-tute for the driver's attention and judg-ment. The driver is always responsible forensuring the vehicle is driven in a safemanner, at the appropriate speed, with anappropriate distance to other vehicles,and in accordance with current trafficrules and regulations.

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Related information
City Safety™ (p. 305)
City Safety steering assistance limitationsduring evasive maneuvers (p. 314)
City Safety steering assistancelimitations during evasivemaneuvers
City Safety steering assistance may have limitedfunctionality in certain situations and not inter-vene, 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 andradar sensor, which has certain general limita-tions.

Related information
City Safety steering assistance for evasivemaneuver (p. 313)
City Safety limitations (p. 316)
Speed-dependent steering wheel resistance(p. 260)
Camera/radar sensor limitations (p. 300)
City Safety and delayed evasivemaneuvers
City Safety can assist the driver by automaticallybraking the vehicle when it is not possible toavoid a collision by steering alone.
City Safety assists the driver by periodicallyattempting to predict possible "escape routes" tothe sides of the vehicle in the event a slow-mov-ing or stationary vehicle were to be detected at alate stage.
Your vehicle (1) cannot detect any potential escaperoutes for veering away from the vehicle ahead (2) andmay therefore apply the brakes at an earlier stage.
Own vehicle
Slow-moving/stationary vehicles
City Safety will not intervene to automaticallyapply the brakes if it is possible for the driver toavoid a collision by steering the vehicle.

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However, if City Safety determines that an eva-sive maneuver would not be possible due to traf-fic in the adjacent lane(s), the function can assistthe driver by automatically starting to apply thebrakes at an earlier stage.

WARNING
The function is supplementary driver sup-port intended to facilitate driving and helpmake it safer – it cannot handle all situa-tions in all traffic, weather and road condi-tions.
The driver is advised to read all sectionsin the Owner's Manual about this functionto learn of its limitations, which the drivermust be aware of before using the func-tion.
Driver support functions are not a substi-tute for the driver's attention and judg-ment. The driver is always responsible forensuring the vehicle is driven in a safemanner, at the appropriate speed, with anappropriate distance to other vehicles,and in accordance with current trafficrules and regulations.

NOTE
The function uses the vehicle's camera andradar sensor, which has certain general limita-tions.
Related information
City Safety™ (p. 305)
City Safety limitations (p. 316)
Camera/radar sensor limitations (p. 300)
City Safety braking for oncomingvehicles
City Safety can help you apply the brakes for anoncoming vehicle in your lane.
If an oncoming vehicle veers into your lane and acollision is unavoidable, City Safety can helpreduce your vehicle's speed to attempt to miti-gate the force of the collision.
Own vehicle
Oncoming vehicles
The following criteria must be met for the func-tion to work:
your vehicle's speed must be above 4 km/h(3 mph)
the road must be straight