2017 VOLVO XC90 lane assist

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DRIVER SUPPORT
284sensor, the system may apply the brakes in your vehicle suddenly or not at all. Pilot Assist is designed to follow a vehicle ahead in the same traffic lane at a preset time intervalset by the driver. If the radar sensor does notdetect a vehicle ahead, the vehicle will insteadmaintain the speed set by the driver. This will alsobe the case if a vehicle ahead accelerates andexceeds the set speed.
• Pilot Assist can follow another vehicle from astandstill up to a speed of approx. 125 mph(200 km/h)
• Pilot Assist can provide steering assistancefrom very low speeds up to approx. 87 mph(140 km/h).
Never exceed posted speed limits.
WARNING
• Pilot Assist is not a collision avoidance system. The driver must react if the sys-tem does not detect another vehicle.
• Pilot Assist does not react to people, ani-mals, stationary objects, small vehicles(such as bicycles and motorcycles), lowtrailers and slow moving, parked orapproaching vehicles.
• Do not use Pilot Assist in demandingdriving conditions such as city driving orother heavy traffic situations, in areas withintersections, in slippery conditions, whenthere is a great deal of water or slush onthe road, during heavy rain or snow, inpoor visibility, on winding roads, on high-way on- or off-ramps or if the vehicle istowing a trailer, boat, etc.
NOTE
•Pilot Assist maintenance should only be carried out by a trained and qualifiedVolvo service technician.
• Pilot Assist regulates your vehicle'sspeed using the accelerator pedal andthe brakes. Please be aware that theremay be a faint sound from the brakeswhen the system is using them.
Pilot Assist overview
Controls
Function buttons and symbols (generic illustration)
Increase set speed or resume Pilot Assist set speed and distance (time interval) to thevehicle ahead
Press to activate Pilot Assist or put it in standby mode
Change from Pilot Assist to Adaptive Cruise Control
Reduce set speed
Increase the distance (time interval) to the vehicle ahead
Change from Adaptive Cruise Control to Pilot Assist
Reduce the distance (time interval) to the vehicle ahead

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Prerequisites
The prerequisites for activating Pilot Assist are:• The driver's seat belt must be buckled and the driver's door must be closed.
• There must be a vehicle ahead (a target vehi-cle) within a reasonable distance or yourvehicle's current speed must be at least9 mph (15 km/h).
With ACC in standby mode: 1. Tap
▶ (6).
> The symbol
will change to Pilot
Assist in standby mode (8).
2. Press the
button (2) on the left-side
steering wheel keypad.
> Pilot Assist will go into active mode and the current speed will be stored and dis- played in the center of the speedometer. or
If Adaptive Cruise Control has been started:
–Tap ▶ (6).
> Pilot Assist will start.
Pilot Assist's steering assis- tance is only active when thesteering wheel symbol (2)changes from GRAY toGREEN.
And Pilot Assist will only regulate the time inter- val to the vehicle ahead when a vehicle symbol(1) is displayed above the steering wheel. At the same time, a speedinterval will be marked. The higher speed is the one stored by the driver and thelower one is the speed of thevehicle ahead (target vehicle).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 driving conditions 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 Pilot Assist 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.

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• the lane is at the top of a hill, on an uneven road surface or over a bump.
• bad weather conditions (rain, snow, fog,slush, poor visibility, backlighting, etc).
The driver should also be aware that Pilot Assist 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.
Hands on the steering wheel
Pilot Assist only functions when the driver's hands are on the steering wheel
, which is con-
tinuously monitored by the system. If this is notthe case, the driver will be alerted by a text mes-sage in the instrument panel. If the driver's handsare not returned to the steering wheel, an audiblesignal will sound. If the driver does not return his/her hands to thesteering wheel after the audible signal, PilotAssist will go into standby mode and must be reactivated by pressing
.
Related information
•
Pilot Assist
* (p. 283)
• Changing Pilot Assist speed (p. 288)
• Setting a Pilot Assist time interval (p. 289)
• Changing target vehicles and automatic braking with Pilot Assist (p. 292)
• Deactivating/resuming Pilot Assist (p. 290)
• Passing Assistance with Adaptive CruiseControl or Pilot Assist (p. 277)
• Pilot Assist limitations (p. 293)
• Pilot Assist symbols and messages (p. 295)
Changing Pilot Assist speed
Different speeds can be set for Pilot Assist.
Function buttons and symbols
–Change a set speed by pressing the (1)
or — (3) buttons briefly or by pressing and
holding them:
• Press briefly
: changes speed in
+/– 5 mph (+/– 5 km/h) increments. Each press changes the vehicle's speedby +/– 5 mph (+/– 5 km/h).
• Press and hold
: changes the speed
+/– 1 mph (+/– 1 km/h) at a time.Release the button when the set speedindicator (4) has moved to the desiredspeed.
If speed is increased by pressing the accelerator pedal before the
button is pressed, the vehi-
cle's speed when the button is pressed will

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In standby mode, the driver will have to regulate the vehicle's speed and the distance to the vehi-cle ahead. When Pilot Assist is in standby mode and your vehicle comes too close to another vehicle, thedriver will be alerted by the Distance Alert func-tion.
Standby mode due to action by the driver
Pilot Assist is temporarily deactivated and put in standby mode if:
• the brakes are applied
• The gear selector is moved to
N
• the turn signals are used for more than1 minute
• the vehicle is driven faster than the setspeed for more than 1 minute.
A temporary increase in speed, such as whenpassing another vehicle, does not affect the PilotAssist set speed. The vehicle will return to the setspeed when the accelerator pedal is released. When the turn signals are used, Pilot Assist's steering function will be temporarily deactivated.When this is no longer the case, the steeringfunction will reactivate if the traffic lane's sidemarker lines can still be detected.
Automatic standby mode
Pilot Assist interacts with other systems, such as Electronic Stability Control. If any of these other systems are not functioning properly, Pilot Assistwill automatically be deactivated.
WARNING
If this happens, the driver will be alerted by an audible signal and a message in the instru-ment panel. The driver will have to adapt thevehicle's speed, apply the brakes when nec-essary and keep a safe distance to the vehicleahead.
Pilot Assist switches automatically to standby mode if: • the vehicle's speed is below approx. 3 mph(5 km/h) and Pilot Assist cannot determine ifa vehicle ahead is a stationary vehicle or anobject.
• the vehicle's speed is below approx. 3 mph(5 km/h) and the vehicle ahead turns so thatPilot Assist no longer has a vehicle to follow(target vehicle).
• the driver's hands are not on the steeringwheel
• the driver's door is opened
• the driver unbuckles the seat belt
• engine speed (rpm) is too high/low
• the wheels lose traction
• brake temperature is too high
• the parking brake is set •
The camera lens/radar sensor is covered bye.g., snow or if heavy rain interferes withradar wavesReactivating Pilot Assist from standby
mode
Generic illustration
–Press the button (1).
> The most recently set speed will be used.
WARNING
There may be a significant increase in speed after the
button has been pressed.
Related information
• Pilot Assist
* (p. 283)
• Starting and activating Pilot Assist (p. 286)
• Changing Pilot Assist speed (p. 288)

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Setting a Pilot Assist time interval (p. 289)
• Changing target vehicles and automatic braking with Pilot Assist (p. 292)
• Passing Assistance with Adaptive CruiseControl or Pilot Assist (p. 277)
• Pilot Assist limitations (p. 293)
• Pilot Assist symbols and messages (p. 295)
• Distance Alert
* (p. 267)
Changing target vehicles and automatic braking with Pilot Assist
At certain speeds, Pilot Assist can change target vehicles 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 another vehicle at speeds under 20 mph (30 km/h) and
changes 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 moving vehicle to a stationary one at speeds above
20 mph (30 km/h), the system will not react
to the stationary vehicle and will accelerate to the previously set speed. The driver must actively apply the brakes to slow/stop the vehicle.
Automatic standby mode when changing targets
Pilot Assist disengages and goes into standby mode 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 functionIn 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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–The driver will then have to reactivate Pilot Assist in one of the following ways:
• Press the
button on the left-side
steering wheel keypad
• Press the accelerator pedal
> Pilot Assist will resume following the vehi- cle ahead (target vehicle) if it begins to move 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 before Pilot Assist can be reactivated.
Deactivation of the auto-hold brake function
In certain situations, auto-hold will be deactivated when the vehicle is at a standstill and Pilot Assistwill go into standby mode. This means that the brakes will be released and the vehicle can begin to roll. The driver must actively apply the brakes to keep the 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 R
positions
• the driver puts Pilot Assist in standby mode
Automatically setting the parking brakeIn certain situations, the parking brake is set automatically to help keep the vehicle at a stand-still. This occurs if Pilot Assist keeps the vehicle at a standstill with the brakes and:
• 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. 283)
• Starting and activating Pilot Assist (p. 286)
• Changing Pilot Assist speed (p. 288)
• Setting a Pilot Assist time interval (p. 289)
• Deactivating/resuming Pilot Assist (p. 290)
• Passing Assistance with Adaptive CruiseControl or Pilot Assist (p. 277)
• Pilot Assist limitations (p. 293)
• Pilot Assist symbols and messages (p. 295)
Pilot Assist limitations
Pilot Assist functionality may be limited in certain situations.
Pilot Assist is designed to help the driver in a number 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.

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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 driving conditions 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 Pilot Assist 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 Pilot Assist 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 loadsPilot 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 be
selected if Pilot Assist is activated.
• Pilot Assist uses the vehicle's camera and radar sensor, which have certain general limi-tations. See the articles "Camera limitations"and "Radar sensor limitations" for additionalinformation.
Related information
•
Pilot Assist
* (p. 283)
• Starting and activating Pilot Assist (p. 286)
• Changing Pilot Assist speed (p. 288)
• Setting a Pilot Assist time interval (p. 289)
• Changing target vehicles and automaticbraking with Pilot Assist (p. 292)
• Deactivating/resuming Pilot Assist (p. 290)
• Passing Assistance with Adaptive CruiseControl or Pilot Assist (p. 277)
• Pilot Assist symbols and messages (p. 295)
• Radar sensor limitations (p. 297)
• Camera limitations (p. 301)

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Pilot Assist symbols and messages
A number of Pilot Assist symbols and/or mes- sages may appear in the instrument panel or the head-up display *.
Several examples 4
are provided here.
In this illustration, Pilot Assist is set at 65 mph (110 km/h) and there is no target vehicle ahead. In this example, Pilot Assist will not provide steer- ing assistance because it cannot detect the traf-fic lane's side marker lines.
In this illustration, Pilot Assist is set at 65 mph (110 km/h) and there is a target vehicle aheadthat is traveling at the same speed. In this example, Pilot Assist will not provide steer- ing assistance because it cannot detect the traf-fic lane's side marker lines.In this illustration, Pilot Assist is set at 65 mph (110 km/h) and there is a target vehicle aheadthat is traveling at the same speed. In this example, Pilot Assist also provides steer- ing assistance because it is able to detect thetraffic lane's side marker lines.
4 In the following illustrations, the optional RSI (Road Sign Information) function is indicating that the posted speed limit is 80 mph (130 km/h).