2017 VOLVO XC90 TWIN ENGINE HYBRID brake light

DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.303
Automatic braking with PilotAssist-1
The auto-hold brakes function as follows withPilot Assist.

Auto-hold brake function
In slow-moving, stop-and-go traffic or when stop-ped at a traffic light, driving will resume automati-cally if the vehicle is not stopped for more thanapprox. 3 seconds. If it takes more than3 seconds for the vehicle ahead to begin movingagain, Pilot Assist will go into standby mode andthe auto-hold brake function will activate.
–The driver will then have to reactivate PilotAssist in one of the following ways:
•Press the button on the left-sidesteering wheel keypad
•Press the accelerator pedal
>Pilot Assist will resume following the vehi-cle ahead (target vehicle) if it begins tomove within approx. 6 seconds.

NOTE
Pilot Assist can keep the vehicle at a stand-still for up to 5 minutes, after which the park-ing brake will be set and Pilot Assist will gointo standby mode.
The parking brake has to be released beforePilot Assist can be reactivated.
Deactivation of the auto-hold brake function
In certain situations, auto-hold will be deactivatedwhen the vehicle is at a standstill and Pilot Assistwill go into standby mode.
This means that the brakes will be released andthe vehicle can begin to roll.
The driver must actively apply the brakes to keepthe vehicle at a standstill.
This can occur in the following situations:
•the driver presses the brake pedal
•the parking brake is set
•the gear selector is moved to the P, N or Rpositions
•the driver puts Pilot Assist in standby mode

Automatically setting the parking brake
In certain situations, the parking brake is setautomatically to help keep the vehicle at a stand-still.
This occurs if:
•the driver unbuckles the seat belt or opensthe door
•Pilot Assist has kept the vehicle at a stand-still for more than approx. 5 minutes
•the engine is turned off
•the brakes overheat
Related information
•Pilot Assist* (p. 295)
•Pilot Assist-1* (p. 295)
•Starting and activating Pilot Assist-1*(p. 298)
•Setting a Pilot Assist-1 time interval (p. 300)
•Deactivating/resuming Pilot Assist-1(p. 301)
•Pilot Assist-1 limitations (p. 304)

DRIVER SUPPORT
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Pilot Assist-1 limitations
Pilot Assist functionality may be limited in certainsituations.
Pilot Assist is designed to help the driver in anumber of situations. However, the driver alwayshas the primary responsibility for maintaining asafe distance to other vehicles and for keepingthe vehicle in its proper traffic lane.

WARNING
Pilot Assist is not a collision avoidance sys-tem. The driver is always responsible forsteering or applying the brakes if the systemdoes not detect another vehicle.
Do not use Pilot Assist in demanding drivingconditions such as city driving or other heavytraffic situations, in slippery conditions, whenthere is a great deal of water or slush on theroad, during heavy rain or snow, in poor visibil-ity, on winding roads or on highway on- or off-ramps.
In certain situations, it may be difficult for PilotAssist to assist the driver correctly or to deac-tivate automatically. In such cases, it is advisa-ble not to use Pilot Assist. Examples of suchsituations may be:
•the lane's side market lines are missing,badly faded or cross each other.
•the division of lanes is not clear, e.g.,when a line divides or merges withanother, at exits or if there are many roadsigns/markers.
•there are edges or other lines on or nearthe lane, e.g., curbs, cracks, repairedareas, sharp shadows, etc.
•the lane is narrow or winding.
•the lane is at the top of a hill, on anuneven road surface or over a bump.
•bad weather conditions (rain, snow, fog,slush, poor visibility, backlighting, etc).
The driver should also be aware that PilotAssist has the following limitations:
•High curbs, barriers and temporary obsta-cles (cones, barriers etc) may not bedetected or could be detected incorrectlyas side marker lines, which may create arisk of collision. The driver must ensure asafe distance to these obstacles.
•The camera or radar sensor may not beable to detect objects if there are pot-holes or if there are stationary objectspartially or completely blocking the road.
•Pilot Assist does not "see" pedestrians,animals, etc.
•Pilot Assist's steering capacity is limitedand may not always be able to help thedriver keep the vehicle in the lane.
The driver can always take action to override PilotAssist.

Steep roads and/or heavy loads
Pilot Assist is primarily intended for use on rela-tively level roads. The function may not be able tomaintain the correct time interval to the vehicleahead on when driving down steep hills. Thedriver should be attentive and prepared to applythe brakes in these situations.
Do not use Pilot Assist when the vehicle is trans-porting a heavy load or if it is towing a trailer.

DRIVER SUPPORT
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Pilot Assist overview
Controls
Function buttons and symbols (generic illustration)
Increase set speed or resume Pilot Assist setspeed and distance (time interval) to thevehicle ahead
Press to activate Pilot Assist or put it instandby mode
Change from Pilot Assist to Adaptive CruiseControl
Reduce set speed
Increase the distance (time interval) to thevehicle ahead
Change from Adaptive Cruise Control to PilotAssist
Reduce the distance (time interval) to thevehicle ahead
Function symbol
Distance and target vehicle symbol
Steering assistance symbol

Instrument panel
Speed indication (generic illustration)
Set speed
Speed of the vehicle ahead
Your vehicle's current speed.
See also the article "Pilot assist symbols andmessages" for additional information.
Collision warning
Warning light in the windshield
Pilot Assist can exert brake force that is equiva-lent to approximately 40% of the vehicle's totalbraking capacity.
In situations requiring more brake force than PilotAssist can provide and if the driver does notapply the brakes, an audible signal and warninglight will illuminate in the windshield to alert thedriver to react.

NOTE
Strong sunlight, reflections, extreme light con-trasts, the use of sunglasses, or if the driver isnot looking straight ahead may make the vis-ual warning signal in the windshield difficult tosee.

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DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.308

WARNING
Pilot Assist only provides warnings for vehi-cles that its radar sensor and camera havedetected. For this reason, a warning may begiven later than expected or not at all. Thedriver should never wait for a warning beforeapplying the brakes.

Head-up-display *
A flashing symbol alerts the driver
If the vehicle is equipped with a head-up display,a flashing symbol in the windshield will alert thedriver.
NOTE
Strong sunlight, reflections, extreme light con-trasts, the use of sunglasses, or if the driver isnot looking straight ahead may make the vis-ual warning signal in the windshield difficult tosee.

Related information
•Pilot Assist* (p. 295)
•Starting and activating Pilot Assist-2(p. 308)
•Changing Pilot Assist-2 speed (p. 310)
•Setting a Pilot Assist-2 time interval (p. 311)
•Changing target vehicles and automaticbraking with Pilot Assist-2 (p. 314)
•Deactivating/resuming Pilot Assist (p. 312)
•Passing Assistance with Adaptive CruiseControl or Pilot Assist-2 (p. 289)
•Pilot Assist-2 limitations (p. 315)
•Pilot Assist-2 symbols and messages(p. 317)
•Adaptive Cruise Control (ACC)* (p. 281)
•Distance Alert* (p. 279)
•Head-up display (HUD)* (p. 122)
•Radar sensor limitations (p. 319)
•Camera limitations (p. 323)
Starting and activating Pilot Assist-2
Pilot Assist has to be started and then activatedbefore it can provide steering assistance andregulate speed and the distance to the vehicleahead.
Function buttons and symbols

DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.314
•Changing Pilot Assist-2 speed (p. 310)
•Setting a Pilot Assist-2 time interval (p. 311)
•Changing target vehicles and automaticbraking with Pilot Assist-2 (p. 314)
•Passing Assistance with Adaptive CruiseControl or Pilot Assist-2 (p. 289)
•Pilot Assist-2 limitations (p. 315)
•Pilot Assist-2 symbols and messages(p. 317)
•Distance Alert* (p. 279)
Changing target vehicles andautomatic braking with PilotAssist-2
At certain speeds, Pilot Assist can change targetvehicles and automatically apply the brakes.

Changing target vehicles
If the target vehicle turns suddenly, there may be a sta-tionary vehicle ahead
When Pilot Assist is actively following anothervehicle at speeds under 20 mph (30 km/h) andchanges targets from a moving vehicle to a sta-tionary one, the system will brake for the station-ary vehicle.
WARNING
If Pilot Assist changes targets from a movingvehicle to a stationary one at speeds above20 mph (30 km/h), the system will not reactto the stationary vehicle and will accelerate tothe previously set speed.
The driver must actively apply the brakes toslow/stop the vehicle.

Automatic standby mode when changing
targets
Pilot Assist disengages and goes into standbymode if:
•your vehicle's speed goes below approx.3 mph (5 km/h) and Pilot Assist cannotdetermine if the target object is a stationaryvehicle or some other type of object such asa speed bump, etc
•the vehicle's speed goes below approx.3 mph (5 km/h) and the vehicle aheadchanges lanes or turns so that Pilot Assistno longer has a target vehicle to follow

Auto-hold brake function
In slow-moving, stop-and-go traffic or when stop-ped at a traffic light, driving will resume automati-cally if the vehicle is not stopped for more thanapprox. 3 seconds. If it takes more than3 seconds for the vehicle ahead to begin movingagain, Pilot Assist will go into standby mode andthe auto-hold brake function will activate.

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DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.316

WARNING
Pilot Assist is not a collision avoidance sys-tem. The driver is always responsible forsteering or applying the brakes if the systemdoes not detect another vehicle.
Do not use Pilot Assist in demanding drivingconditions such as city driving or other heavytraffic situations, in slippery conditions, whenthere is a great deal of water or slush on theroad, during heavy rain or snow, in poor visibil-ity, on winding roads or on highway on- or off-ramps.
In certain situations, it may be difficult for PilotAssist to assist the driver correctly or to deac-tivate automatically. In such cases, it is advisa-ble not to use Pilot Assist. Examples of suchsituations may be:
•the lane's side market lines are missing,badly faded or cross each other.
•the division of lanes is not clear, e.g.,when a line divides or merges withanother, at exits or if there are many roadsigns/markers.
•there are edges or other lines on or nearthe lane, e.g., curbs, cracks, repairedareas, sharp shadows, etc.
•the lane is narrow or winding.
•the lane is at the top of a hill, on anuneven road surface or over a bump.
•bad weather conditions (rain, snow, fog,slush, poor visibility, backlighting, etc).
The driver should also be aware that PilotAssist has the following limitations:
•High curbs, barriers and temporary obsta-cles (cones, barriers etc) may not bedetected or could be detected incorrectlyas side marker lines, which may create arisk of collision. The driver must ensure asafe distance to these obstacles.
•The camera or radar sensor may not beable to detect objects if there are pot-holes or if there are stationary objectspartially or completely blocking the road.
•Pilot Assist does not "see" pedestrians,animals, etc.
•Pilot Assist's steering capacity is limitedand may not always be able to help thedriver keep the vehicle in the lane.
The driver can always take action to override PilotAssist.

Steep roads and/or heavy loads
Pilot Assist is primarily intended for use on rela-tively level roads. The function may not be able tomaintain the correct time interval to the vehicleahead on when driving down steep hills. Thedriver should be attentive and prepared to applythe brakes in these situations.
Do not use Pilot Assist when the vehicle is trans-porting a heavy load or if it is towing a trailer.
Additional information
•The Off Road drive mode cannot beselected if Pilot Assist is activated.
•Pilot Assist uses the vehicle's camera andradar sensor, which have certain general limi-tations. See the articles "Camera limitations"and "Radar sensor limitations" for additionalinformation.

Related information
•Pilot Assist* (p. 295)
•Pilot Assist-2* (p. 305)
•Starting and activating Pilot Assist-2 (p. 308)
•Changing Pilot Assist-2 speed (p. 310)
•Setting a Pilot Assist-2 time interval (p. 311)
•Changing target vehicles and automaticbraking with Pilot Assist-2 (p. 314)
•Deactivating/resuming Pilot Assist (p. 312)
•Passing Assistance with Adaptive CruiseControl or Pilot Assist-2 (p. 289)
•Pilot Assist-2 symbols and messages(p. 317)
•Radar sensor limitations (p. 319)
•Camera limitations (p. 323)

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DRIVER SUPPORT
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takes action. If the vehicle has slowed to avoidcolliding with the vehicle ahead, your speed willbe reduced to that vehicle's speed.
When auto-brake is triggered, the seat belt pre-tensioners may also be activated, see the article"Seat belts" for additional information.
Auto-braking can be cancelled if the driverpresses hard on the accelerator pedal.
When City Safety applies the brakes, the brakelights will illuminate.
When City Safety is triggered and applies thebrakes, a text message will be displayed in theinstrument panel.

Related information
•City Safety™ troubleshooting (p. 332)
•City Safety in crossing traffic (p. 331)
•City Safety limitations (p. 334)
•City Safety symbols and messages (p. 337)
•Detecting obstructions with City Safety(p. 329)
•Rear Collision Warning (RCW) (p. 338)
•City Safety warning level settings (p. 328)
•City Safety in crossing traffic (p. 331)
•Seat belts (p. 66)
•City Safety when evasive action is not possi-ble (p. 332)
City Safety warning level settings
City Safety is always activated but the function'swarning distance can be adjusted.
NOTE
City Safety cannot be turned off and activatesautomatically each time the engine/electricmotor is started.

Setting a warning level (distance)
The distance set for warnings determines thesystem's responsiveness and sets the distance atwhich visual, audible and tangible (haptic) warn-ings will be triggered.
To do so:
1.Tap Settings in the center display's Topview.
2.Tap My CarIntelliSafeCity Safety.
3.Choose among Earlier, Normal or Later.
Begin by choosing Earlier. If too many warningsare given, change to Normal.
If the driver feels that warnings are given toooften, the warning level can be lowered. Thismeans that warnings will be provided later, result-ing in fewer warnings being given.
The setting Later should only used in exceptionalcircumstances, e.g., for a more dynamic drivingstyle.
WARNING
•No automatic system can be guaranteedto function 100% correctly in all situa-tions. For that reason, never test CitySafety by driving toward a person orobject. This could result in serious injuryor death.
•Even if the setting Earlier has beenselected, warnings may be perceived asbeing given late, e.g., if the difference inspeed is great or if the vehicle aheadbrakes suddenly.
•City Safety can provide a warning for apotential collision but it can never shortenthe driver's reaction time.
•To help make City Safety as effective aspossible, always using the setting Earlieris recommended.

NOTE
•Due to local traffic regulations in certainmarkets, RCW will not activate the rearturn signals. That part of the function willbe deactivated.
•The use of the rear turn signals will alsobe deactivated if the City Safety warninglevel is set at Later. See also the section"Setting a warning level (distance)" in thearticle "City Safety settings."
•If RCW detects a vehicle approachingfrom behind, the seat belt pretensioners

DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.359

Side park assist
The system's side sensors are activated automat-ically when the engine is started and are active atspeeds below approximately 6 mph (10 km/h).
The distance monitored along the sides of thevehicle is approximately 1 ft (30 cm). The audiblesignal comes from the side speakers.
Front park assist
The system's front sensors are activated auto-matically when the engine is started and areactive at speeds below approximately 6 mph(10 km/h).
The distance monitored in front of the vehicle isapproximately 2.5 ft (80 cm). The audible signalcomes from the front speakers.
Front Park Assist is deactivated if the parkingbrake is applied or if the gear selector is put in P.
When installing auxiliary headlights, be sure thatthey do not obstruct the front sensors. Otherwise,these lights could trigger a Park Assist warning.

Related information
•Activating/deactivating Park Assist (p. 359)
•Park Assist limitations (p. 360)
•Park assist symbols and messages (p. 361)
Activating/deactivating Park Assist
The Park Assist system can be turned on or off.
On/Off
Park Assist's front and side sensors are activatedautomatically when the engine is started. Therear sensors activate if the vehicle rolls rearwardin N or if R is selected.
This function can be activated/deactivated in the center dis-play's Function view.
–Tap the Park Assist button.
>Green indicator: the function is active.Gray indicator: the function is deactivated.

Related information
•Park Assist* (p. 358)
•Park Assist limitations (p. 360)
•Park assist symbols and messages (p. 361)