VOLVO XC90 TWIN ENGINE HYBRID 2017 Owners Manual

DRIVER SUPPORT
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* Option/accessory, for more information, see Introduction.289
Passing Assistance with AdaptiveCruise Control or Pilot Assist-2
ACC or Pilot Assist can assist the driver whenpassing other vehicles.

How passing assistance works
When ACC or Pilot Assist is following anothervehicle and the driver indicates that he/she isabout to pass that vehicle by using the left turnsignal, ACC or Pilot Assist will begin acceleratingtoward the vehicle ahead before your vehicle hasmoved into the passing lane.
The function will then delay a speed reduction toavoid early braking as your vehicle approachesthe slower-moving vehicle.
The function is active until your vehicle haspassed the other vehicle.

WARNING
Be aware that this function may be activatedin situations other than when passing a vehi-cle, such as if the turn signal is used to indi-cate a lane change or to indicate a turn. Thevehicle will accelerate briefly.

Using passing assistance
To activate passing assistance:
•Your vehicle (ACC or Pilot Assist) must befollowing another vehicle (the target vehicle).
•Current speed must be at least approx.45 mph (70 km/h ).
•The speed set for ACC or Pilot Assist mustbe high enough to safely pass the vehicleahead.
Starting passing assistance
To start a passing assistance sequence:
•Activate the left turn signal.

Passing assistance limitations
WARNING
The driver should be prepared for suddenchanges when passing assistance is used. Incertain cases, there may be undesired accel-eration.
Certain situations should be avoided, such as:
•If the vehicle is approaching an exit to theleft or a left turn.
•If the vehicle ahead slows down beforeyour vehicle has moved into the passinglane.
•Traffic in the passing lane slows down.
Passing assistance in these situations can bedeactivated by putting ACC or Pilot Assist instandby mode.

Related information
•Pilot Assist* (p. 295)
•Pilot Assist-2* (p. 305)
•Adaptive Cruise Control (ACC)* (p. 281)
Changing target vehicles andautomatic braking with AdaptiveCruise Control (ACC)
At certain speeds, Adaptive Cruise Control canchange target vehicles and automatically applythe brakes.
Changing target vehicles
If the target vehicle turns suddenly, there may be a sta-tionary vehicle ahead
When ACC is actively following another vehicle atspeeds under 20 mph (30 km/h) and changestargets from a moving vehicle to a stationary one,the system will brake for the stationary vehicle.

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DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.290

WARNING
If ACC changes targets from a moving vehicleto a stationary one at speeds above 20 mph(30 km/h), the system will not react to thestationary vehicle and will accelerate to thepreviously set speed.
The driver must actively apply the brakes toslow/stop the vehicle.

Automatic standby mode when changing
targets
ACC disengages and goes into standby mode if:
•your vehicle's speed goes below approx.3 mph (5 km/h) and ACC cannot determineif the target object is a stationary vehicle orsome other type of object such as a speedbump, etc
•the vehicle's speed goes below approx.3 mph (5 km/h) and the vehicle aheadchanges lanes or turns so that ACC nolonger 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, ACC will go into standby mode and theauto-hold brake function will activate.
–The driver will then have to reactivate ACC inone of the following ways:
•Press the button on the left-sidesteering wheel keypad.
•Press the accelerator pedal.
>ACC will resume following the vehicleahead (target vehicle) if it begins to movewithin approx. 6 seconds.
NOTE
ACC can keep the vehicle at a standstill forup to 5 minutes, after which the parking brakewill be set and ACC will go into standbymode.
The parking brake has to be released beforeACC 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 ACC will gointo 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 ACC 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 ACC keeps the vehicle at a stand-still with the brakes and:
•the driver unbuckles the seat belt or opensthe door
•ACC has kept the vehicle at a standstill formore than approx. 5 minutes
•the brakes overheat
•the engine is turned off.

Related information
•Adaptive Cruise Control (ACC)* (p. 281)
•Auto-hold brake function (p. 379)
•Parking brake (p. 382)

DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.291
Adaptive Cruise Control (ACC) -troubleshooting
If this symbol is displayed in the instru-ment panel and the messageWindscreen sensor Sensorblocked, see Owner's manualappears, the ACC radar sensor is blocked andcannot detect vehicles ahead.
This message also indicates that the followingsystems may have reduced functionality:
•Distance Alert
•City Safety
•Driver Alert Control
•Pilot Assist
•Lane Keeping Aid (LKA)
•Road Sign Information (RSI)
The following table lists possible causes for this message being displayed and suitable actions:
CauseAction
The windshield in front of the radar is dirty or covered with snow/ice.Clean/clear the windshield in front of the radar.
Heavy rain or snow is interfering with the radar signals.No action possible. Heavy precipitation may affect the function of the radar.
Swirling water or snow from the surface of the road may interfere with theradar signals.No action possible. A very wet or snow-covered road surface may affect thefunction of the radar.
The windshield in front of the radar is clean but the message remains in thedisplay.Wait a short time. It may take several minutes for the radar to detect that it isno longer obstructed.
A text message can be erased by briefly pressingthe O button on the right-side steering wheelkeypad. If the message recurs, contact a trainedand authorized Volvo service technician orretailer.

Related information
•Adaptive Cruise Control (ACC)* (p. 281)

DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.292
Adaptive Cruise Control (ACC) -limitations
Adaptive Cruise Control (ACC) functionality maybe limited in certain situations.

Steep roads and/or heavy loads
Adaptive Cruise Control is primarily intended foruse on relatively level roads. The function may notbe able to maintain the correct time interval tothe vehicle ahead when driving down steep hills.The driver should be attentive and prepared toapply the brakes in these situations.
Do not use Adaptive Cruise Control when thevehicle is transporting a heavy load or if it is tow-ing a trailer.

Additional information
•The Off Road drive mode cannot beselected if Adaptive Cruise Control is acti-vated.
•Adaptive Cruise Control uses the vehicle'scamera and radar sensor, which have certaingeneral limitations. See the articles "Cameralimitations" and "Radar sensor limitations"for additional information.

Related information
•Adaptive Cruise Control (ACC)* (p. 281)
•Radar sensor limitations (p. 319)
•Camera limitations (p. 323)

DRIVER SUPPORT
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* Option/accessory, for more information, see Introduction.293
Adaptive Cruise Control (ACC)symbols and messages
A number of ACC symbols and/or messagesmay appear in the instrument panel or the head-up display*.
Several examples3 are provided here.
This illustration4 shows that ACC is set at aspeed of 68 mph (110/km/h) and that there isno vehicle ahead to follow.
This illustration4 shows that ACC is set at aspeed of 68 mph (110/km/h) and is followinganother vehicle traveling at the same speed.
The following table lists several ACC-related symbols and messages.
SymbolMessageExplanation
WHITE symbolACC is in active mode and maintaining the set speed.
GRAY symbol and UnavailableACC is in standby mode.
3In the following illustrations, the optional RSI (Road Sign Information) function is indicating that the posted speed limit is 80 mph (130 km/h).4The illustration is generic. 110 km/h is approx. 68 mph.

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DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.294
SymbolMessageExplanation
Adaptive cruise
Service required
The system is not functioning properly. Contact a trained and qualified Volvo Service tech-nician.
Windscreen sensor Sensor blocked, seeOwner's manualClean the windshield in front of the camera/radar sensor.
A text message can be erased by briefly pressingthe O button on the right-side steering wheelkeypad. If the message recurs, contact a trainedand authorized Volvo service technician orretailer.

Related information
•Adaptive Cruise Control (ACC)* (p. 281)
•Road Sign Information (RSI)* (p. 346)

DRIVER SUPPORT
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* Option/accessory, for more information, see Introduction.295
Pilot Assist*
Pilot Assist helps the driver keep the vehiclebetween a traffic lane's side marker lines as wellas helping to maintain a set time interval (dis-tance) to a vehicle ahead.
There are two versions of Pilot Assist: PilotAssist-1 and Pilot Assist-2. The following illus-trations provide help in determining the versionthat is in your vehicle.

Pilot Assist-1
Vehicles with Pilot Assist-1have this symbol in the instru-ment panel.

Pilot Assist-2
Vehicles with Pilot Assist-2have this symbol in the instru-ment panel.

Related information
•Pilot Assist-1* (p. 295)
•Pilot Assist-2* (p. 305)
Pilot Assist-1*
The Pilot Assist feature helps keep the vehicle inits current traffic lane by providing steeringassistance and maintaining an even speed and aset time interval to the vehicle ahead.
Function
The vehicle's camera monitors the traffic lane'sside marker lines and a distance monitor helpsmaintain the set time interval to the vehicleahead.
Pilot Assist helps provide more relaxed driving inheavy, slow-moving traffic at speeds up to30 mph (50 km/h) on highways and major roads.
Function overview
Windshield module containing the camera/radar sensor
Monitoring distance
Monitoring side marker lines
The driver sets the desired time interval to thevehicle ahead. Pilot Assist monitors that vehicleand the traffic lane's side market lines using thecamera and radar sensor mounted in the upper,center section of the windshield. It helps maintainthe set time interval by automatically adjustingspeed and by providing steering assistance tohelp keep your vehicle in the lane.
Pilot Assist's steering assistance is based onmonitoring the direction of the vehicle ahead andthe traffic lane's side marker lines. The driver canalways override Pilot Assist and steer the vehicleto e.g., change lanes, etc.

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DRIVER SUPPORT
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If the camera and radar sensor cannot detect thelane's side marker lines or a vehicle ahead, PilotAssist goes into standby mode.
When Pilot Assist is in standby mode and yourvehicle comes too close to the vehicle ahead, thedriver will be alerted by the Distance Alert func-tion.

WARNING
•Pilot Assist is designed to be a supple-mentary driving aid and cannot cover alldriving situations, traffic, weather and/orroad conditions.
•The driver should be familiar with all ofthe information in this article regardingPilot Assist, including its limitations.
•Pilot Assist is not intended to replace thedriver's attention and judgement.
•Pilot Assist must only be used wherethere are clearly visible traffic lane sidemarker lines on both sides of the currenttraffic lane. In other circumstances thereis an increased risk of collision with sur-rounding obstacles that are not detectedby the system.
•The driver is always responsible for steer-ing the vehicle and maintaining a suitablespeed and distance to the vehicle aheadand must intervene if necessary, even ifPilot Assist is being used.
Pilot Assist is designed to regulate speedsmoothly but in situations calling for fast braking,the driver must apply the brakes. This applies tosituations where there are considerable differen-ces in speed or if the vehicle ahead brakes sud-denly. Due to the limitations of the camera andradar sensor, the system may apply the brakes inyour vehicle suddenly or not at all.
•The default speed for Pilot Assist is preset toapprox. 30 mph (50 km/h) and cannot bechanged. If the vehicle ahead increasesspeed to over 30 mph (50 km/h) and pullsaway from your vehicle, Pilot Assist will gointo standby mode.

NOTE
•Pilot Assist maintenance should only becarried 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.
WARNING
•Pilot Assist is not a collision avoidancesystem. 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 slipperyconditions, when there is a great deal ofwater or slush on the road, during heavyrain or snow, in poor visibility, on windingroads or on highway on- or off-ramps.

DRIVER SUPPORT
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Pilot Assist overview
Controls
Function buttons and symbols
Activates Pilot Assist when the vehicle iskept at a standstill by the auto-hold brakefunction
Press to activate Pilot Assist or put it instandby mode
Change from Pilot Assist to Adaptive CruiseControl (symbol (8) will also change)
Not in use
Increase the distance (time interval) to thevehicle ahead
Change from Adaptive Cruise Control to PilotAssist (symbol (8) will also change)
Reduce the distance (time interval) to thevehicle ahead
Function symbols
Symbols for the time interval and the vehicleahead

Instrument panel
Speed indication
Set speed
Speed of the vehicle ahead
Your vehicle's current speed.
Collision warning
Warning light
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 from the CitySafety system will sound and warning light willilluminate in the windshield to alert the driver toreact.

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DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.298

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.
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.

Related information
•Pilot Assist* (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)
•Automatic braking with Pilot Assist-1(p. 303)
•Pilot Assist-1 limitations (p. 304)
•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-1*
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