2017 VOLVO XC90 TWIN ENGINE HYBRID Owners Manual

DRIVER SUPPORT
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* Option/accessory, for more information, see Introduction.311
become the set speed assuming that the accel-erator pedal is still depressed when the button ispressed.
A temporary increase in speed, such as whenpassing another vehicle, does not affect thespeed set for Pilot Assist. The vehicle will returnto the set speed when the accelerator pedal isreleased.
Pilot Assist can follow another vehicle from astandstill up to a speed of approx. 125 mph(200 km/h). Always observe posted speed limits.
The lowest speed that can be set/stored for PilotAssist is 20 mph (30 km/h). However, PilotAssist can monitor and react to the speed of thevehicle ahead down to a standstill.
The highest speed that can be set/stored isapprox. 125 mph (200 km/h). Always observeposted speed limits.

Related information
•Pilot Assist* (p. 295)
•Pilot Assist-2* (p. 305)
•Starting and activating Pilot Assist-2 (p. 308)
•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)
Setting a Pilot Assist-2 time interval
Different time intervals to the vehicle ahead canbe selected and are shown in the instrumentpanel as 1–5 horizontal bars.
Changing the time interval
The greater the number of bars,the longer the time interval.One bar between the vehiclesrepresents a time interval ofapproximately 1 second; 5 barsis approximately 3 seconds.

NOTE
When the graphic in the instrument panelshows a vehicle and a steering wheel, PilotAssist is following a vehicle ahead using theset time interval.
If only a steering wheel is displayed, there isno vehicle ahead within a reasonable dis-tance.

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DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.312
Time interval controls
Press to reduce the time interval to the vehi-cle ahead
Press to increase the time interval to thevehicle ahead
Distance indicator
In order to follow the vehicle ahead as smoothlyas possible, Pilot Assist allows the time interval tovary considerably in certain situations. At lowspeeds, when the distance to the vehicle aheadis short, Pilot Assist increases the time intervalslightly.
•If Pilot Assist does not seem to react when itis put in active mode, this may be becausethe set time interval to the vehicle aheaddoes not allow an increase in speed.
•The higher the speed, the greater the dis-tance to the vehicle ahead for a given timeinterval.

WARNING
•Only use a time interval that is suitable incurrent traffic conditions.
•A short time interval gives the driver lim-ited reaction time if an unexpected situa-tion occurs in traffic.

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)
•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)
Deactivating/resuming Pilot Assist
Pilot Assist can be temporarily deactivated, putin standby mode and then reactivated.
Function buttons and symbols (generic illustration)

Deactivating and putting Pilot Assist in
standby mode
–Press the button (2).
>Pilot Assist will go into standby mode. The
symbol in the instrument panel willchange colors from WHITE to GRAY andthe set speed in the center of the speed-ometer will change from BEIGE to GRAY.
or
–Press the ◀ button (2).
>Pilot Assist will be turned off and shift toAdaptive Cruise Control in active mode.

DRIVER SUPPORT
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* Option/accessory, for more information, see Introduction.313
In standby mode, the driver will have to regulatethe vehicle's speed and the distance to the vehi-cle ahead.
When Pilot Assist is in standby mode and yourvehicle 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 instandby 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'ssteering 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 asElectronic 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 anaudible 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 standbymode 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., wet snow or if heavy rain interferes withradar waves

Reactivating 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. 295)
•Pilot Assist-2* (p. 305)
•Starting and activating Pilot Assist-2 (p. 308)

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.

DRIVER SUPPORT
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* Option/accessory, for more information, see Introduction.315
–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 Pilot Assist keeps the vehicle at astandstill 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. 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)
•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)
Pilot Assist-2 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.

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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)

DRIVER SUPPORT
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* Option/accessory, for more information, see Introduction.317
Pilot Assist-2 symbols andmessages
A number of Pilot Assist symbols and/or mes-sages may appear in the instrument panel or thehead-up display*.
Several examples5 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.
5In the following illustrations, the optional RSI (Road Sign Information) function is indicating that the posted speed limit is 80 mph (130 km/h).

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DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.318
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 also provides steer-ing assistance because it is able to detect thetraffic lane's side marker lines.

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 limitations (p. 315)
Driver support system radar sensor
The radar sensor is used by a number of driversupport systems to e.g., help detect other vehi-cles.
Radar sensor location
The radar sensor is used by the following func-tions:
•Distance Alert*
•Adaptive Cruise Control*
•Pilot Assist*
•City Safety
Any modifications to the radar sensor may makeits use illegal.

Related information
•Radar sensor limitations (p. 319)
•Radar sensor - type approval (p. 322)
•Distance Alert* (p. 279)
•Adaptive Cruise Control (ACC)* (p. 281)
•Pilot Assist* (p. 295)
•City Safety™ (p. 326)
•Pilot Assist-2* (p. 305)