2017 VOLVO XC90 TWIN ENGINE HYBRID ECO mode

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DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.284

WARNING
Adaptive Cruise Control only warns of vehiclesdetected by the radar sensor. In some casesthere may be no warning or the warning maybe delayed. The driver should always apply thebrakes when necessary.

Head-up-display *
A flashing light alerts the driver
A flashing icon will appear in the head-up displayto alert the driver of a collision risk.

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
•Starting and activating Adaptive CruiseControl (ACC)* (p. 284)
•Changing Adaptive Cruise Control (ACC)speed (p. 287)
•Setting an Adaptive Cruise Control timeinterval (p. 288)
•Changing target vehicles and automaticbraking with Adaptive Cruise Control (ACC)(p. 289)
•Switching between Cruise Control andAdaptive Cruise Control* (p. 278)
•Passing Assistance with Adaptive CruiseControl or Pilot Assist-2 (p. 289)
•Deactivating/resuming Adaptive CruiseControl (ACC) (p. 285)
•Adaptive Cruise Control (ACC) - trouble-shooting (p. 291)
•Adaptive Cruise Control (ACC) symbols andmessages (p. 293)
•Pilot Assist* (p. 295)
•Distance Alert* (p. 279)
•Head-up display (HUD)* (p. 122)
•Radar sensor limitations (p. 319)
Starting and activating Adaptive
Cruise Control (ACC)*
ACC must first be put in active mode before itcan be started in order to regulate speed or aset time interval to the vehicle ahead.

Starting ACC (putting it in standby
mode)
Function buttons and symbols
–Press ◀ (2) or ▶ (3) to scroll to the ACC
() function. The symbol (4) will be dis-played in the instrument panel.
>The symbol indicates that ACC has beenstarted and is in standby mode. Instandby mode, the vehicle will not main-tain a set speed or a time interval to thevehicle ahead.

DRIVER SUPPORT
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* Option/accessory, for more information, see Introduction.285

Activating ACC (putting it in active
mode and setting a speed)
Before ACC can be put in active mode:
•The driver's seat belt must be buckled andthe 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 the symbol displayed (ACC is in
standby mode), press the button (1) onthe left-side steering wheel keypad.
>This puts ACC in active mode and setsthe vehicle's current speed, which is indi-cated by digits in the center of the speed-ometer.
The time interval to the vehi-cle ahead will only be shownwhen two vehicles are dis-played.
A speed interval will also beindicated:
•The higher speed is the one set in ACC
•The lower one is the speed of the vehicleahead (the target vehicle).

Related information
•Adaptive Cruise Control (ACC)* (p. 281)
•Setting an Adaptive Cruise Control timeinterval (p. 288)
•Deactivating/resuming Adaptive CruiseControl (ACC) (p. 285)
Deactivating/resuming AdaptiveCruise Control (ACC)
ACC can be put temporarily in standby modeand then reactivated.
Function buttons and symbols
To temporarily deactivate and put Adaptive CruiseControl in standby mode:
–Press the button (2).
>The symbol in the instrument panelwill change colors from WHITE to GRAYand the set speed in the center of thespeedometer will change from BEIGE toGRAY.

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DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.286

WARNING
When ACC is in standby mode, the driver hasto control the vehicle's speed and distance toa vehicle ahead.
When ACC is in standby mode, the driver willbe alerted if the distance to the vehicle aheadis too short by the Distance Alert function.See the article "Distance Alert" for additionalinformation.

Standby mode due to action by the driver
ACC is temporarily deactivated and put instandby mode if:
•the brakes are applied
•The gear selector is moved to N
•the vehicle is driven faster than the setspeed for more than 1 minute.
In these cases, the driver will have to regulate thevehicle's speed.
A temporary increase in speed, such as whenpassing another vehicle, does not affect the ACCset speed. The vehicle will return to the set speedwhen the accelerator pedal is released.

Automatic standby mode
ACC interacts with other systems, such asElectronic Stability Control. If any of these othersystems are not functioning properly, ACC willturn off automatically.
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.
ACC switches automatically to standby mode if:
•the vehicle's speed goes below approx.3 mph (5 km/h) and ACC cannot determineif the vehicle ahead is stationary or is anobject such as a speed bump, 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
•the driver opens the door
•the driver unbuckles the seat belt
•the engine speed (rpm) is too high/low
•the wheels lose traction
•the brake temperature is too high
•the parking brake is applied
•the stability system's ESC Sport Mode isactivated
•the Off Road drive mode is selected
•The radar sensor is covered by e.g., wet snowor if heavy rain interferes with radar waves
Reactivating ACC from standby mode
Generic illustration
To reactivate ACC after it has temporarily beenput in standby mode:
–Press the button (1).
>The vehicle will then return to the mostrecently set speed.

WARNING
There may be a significant increase in speed
after the button has been pressed.

Related information
•Adaptive Cruise Control (ACC)* (p. 281)
•Starting and activating Adaptive CruiseControl (ACC)* (p. 284)
•Setting an Adaptive Cruise Control timeinterval (p. 288)

DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.288
Setting an Adaptive Cruise Controltime interval
ACC makes it possible to set various time inter-vals to the vehicle ahead.
Different time intervals to thevehicle ahead can be selectedand are shown in the instru-ment panel as 1–5 horizontalbars. The greater the number ofbars, the longer the time inter-val. One bar between the vehi-cles represents a time interval of approximately1 second; 5 bars is approximately 3 seconds.
The same symbol appears if Distance Alert isactivated.
•If the symbol shows two vehicle's, ACC isactively following the vehicle ahead (a targetvehicle).
•If only one vehicle is displayed, ACC is notactively following another vehicle.

Changing a time interval
Controls for setting a time interval
Reduce the time interval
Increase the time interval
Distance/time indicator
–Press buttons (1) or (2) to reduce orincrease the time interval.
>The distance/time indicator (3) shows thecurrent time interval.
In order to follow the vehicle ahead as smoothlyas possible, ACC allows the time interval to varyconsiderably in certain situations. At low speeds,when the distance to the vehicle ahead is short,ACC increases the time interval slightly.
•If ACC does not seem to react when it is putin active mode, this may be because the set
time interval to the vehicle ahead does notallow an increase in speed.
•The higher the speed, the greater the dis-tance to the vehicle ahead for a given timeinterval.
•Only use time intervals permitted by localtraffic regulations.

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
•Adaptive Cruise Control (ACC)* (p. 281)
•Starting and activating Adaptive CruiseControl (ACC)* (p. 284)
•Deactivating/resuming Adaptive CruiseControl (ACC) (p. 285)
•Passing Assistance with Adaptive CruiseControl or Pilot Assist-2 (p. 289)
•Adaptive Cruise Control (ACC) symbols andmessages (p. 293)
•Distance Alert* (p. 279)

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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
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297

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.300

Related information
•Pilot Assist* (p. 295)
•Pilot Assist-1* (p. 295)
•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)
Setting a Pilot Assist-1 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.
The same symbol appears if Distance Alert isactivated.
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.

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)