2016 VOLVO XC90 T8 cruise control

DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.
266
Adaptive Cruise Control (ACC) *
ACC is an optional system designed to assist the driver by maintaining a set speed or a settime interval to the vehicle ahead.
The driver sets that desired speed and time inter- val to the vehicle ahead. When the camera andradar sensor detects a slower moving vehicleahead, your vehicle's speed is automaticallyadapted. When there are no longer slower mov-ing vehicles ahead, your vehicle will accelerate toresume the set speed. ACC is designed to follow a vehicle ahead in the same lane and maintain a time interval to thatvehicle set by the driver. If the radar sensor doesnot detect a vehicle ahead, ACC will insteadmaintain the speed set by the driver. ACC is designed to smoothly regulate speed. However, the driver must apply the brakes in sit-uations that require immediate braking. Thisapplies when there are great differences inspeed between vehicles, or if the vehicle aheadbrakes suddenly. Due to limitations in the radarsensor, braking may occur unexpectedly or not atall. Adaptive Cruise Control can follow another vehi- cle from a standstill up to 125 mph (200 km/h).Always observe posted speed limits.
WARNING
• It is advisable to read through all of the related articles pertaining to ACC (seethe list at the end of this article).
• Adaptive Cruise Control cannot cover alldriving situations and traffic, weather androad conditions.
• This system is designed to be a supple-mentary driving aid. It is not, however,intended to replace the driver's attentionand judgement. The driver is responsiblefor maintaining a safe distance and speedand must intervene if Adaptive CruiseControl does not maintain a suitablespeed or suitable distance to the vehicleahead.
• Maintenance of ACC components mayonly be performed by a trained and quali-fied Volvo technician.
OverviewThe distance to the vehicle ahead (in the same lane) is monitored by a radar sensor. Your vehi-cle's speed is regulated by accelerating andbraking. The brakes may emit a sound when theyare being modulated by the adaptive cruise con-trol system. This is normal.
WARNING
•
Adaptive Cruise Control is not a collision avoidance system. The driver is alwaysresponsible for applying the brakes if thesystem does not detect another vehicle.
• Adaptive Cruise Control does not react topeople or animals, or small vehicles suchas bicycles and motorcycles. It also doesnot react to slow moving, parked orapproaching vehicles, or stationaryobjects.
• Do not use Adaptive Cruise Control indemanding driving conditions such as citydriving or other heavy traffic situations, inslippery conditions, when there is a greatdeal of water or slush on the road, duringheavy rain or snow, in poor visibility, onwinding roads or on highway on- or off-ramps.
WARNING
The brake pedal moves when the adaptive cruise control system modulates the brakes.Do not rest your foot under the brake pedal.

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Controls
Function buttons and symbols
Increases the set speed or puts ACC back into active mode (previous settings will beresumed)
Puts ACC in active mode and stores the cur- rent speed or puts ACC standby mode
Reduces the set speed
Target vehicle indicator: ACC has detected and is following a target vehicle using the settime interval
Instrument panel
Speed indicators
Set speed
Speed of the vehicle ahead
The current speed of your vehicle
Collision warning
Warning light
Adaptive Cruise Control can exert brake force that is equivalent to approximately 40% of thevehicle's total braking capacity. In situations requiring more brake force than ACC can provide and if the driver does not applythe brakes, an audible signal from the City Safetysystem will sound and warning light will illuminatein the windshield to alert the driver 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.
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Head-up-display *
A flashing light alerts the driver
A flashing icon will appear in the head-up dis- play* to alert the driver of a collision risk.
WARNING
Adaptive Cruise Control only warns of vehicles detected by the radar sensor. In some casesthere may be no warning or the warning maybe delayed. The driver should always apply thebrakes when necessary.
Related information
• Adaptive Cruise Control (ACC) - fault tracing (p. 285)
• Starting and activating Adaptive CruiseControl (ACC) (p. 268)
• Adaptive cruise control passing assistance(p. 284) •
Setting an Adaptive Cruise Control timeinterval (p. 272)
• Deactivating/resuming Adaptive CruiseControl (ACC) (p. 269)
• Adaptive Cruise Control (ACC) symbols andmessages (p. 286)
• Switching between Cruise Control (CC) and Adaptive Cruise Control (ACC)
* (p. 265)
Starting and activating Adaptive Cruise Control (ACC)
ACC must first be put in active mode before it can 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 been
started and is in standby mode . In
standby mode, the vehicle will not main-
tain a set speed or a time interval to the vehicle ahead.

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* Option/accessory, for more information, see Introduction.269
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 and the driver's door must be closed.
• There must be a vehicle ahead (a target vehi-cle) or your vehicle's current speed must beat least 10 mph (15 km/h).
–With the symbol displayed (ACC is in
standby mode), press the
button (1) on
the left-side steering wheel keypad.
> This puts ACC in active mode and sets the 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 be indicated:
• The higher speed is the one set in ACC
• The lower one is the speed of the vehicle ahead (the target vehicle).
Related information
•
Adaptive Cruise Control (ACC)
* (p. 266)
• Setting an Adaptive Cruise Control timeinterval (p. 272)
• Deactivating/resuming Adaptive CruiseControl (ACC) (p. 269)
Deactivating/resuming Adaptive Cruise Control (ACC)
ACC can be put temporarily in standby mode and then reactivated.
Deactivating and putting ACC in standby mode
If ACC is in standby mode and your vehicle comes too close to the vehicle ahead, the driverwill be warned by the Distance Alert systeminstead.

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DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.
270 To temporarily deactivate and put Adaptive Cruise Control in standby mode:
Function buttons and symbols
–Press the button (2).
> The
symbol in the instrument panel
will change colors from WHITE to GRAY and the set speed in the center of thespeedometer will change from BEIGE toGRAY.
Standby mode due to action by the driver
ACC is temporarily deactivated and put in standby mode if:
• the brakes are applied
• The gear selector is moved to
N
• the vehicle is driven faster than the set speed for more than 1 minute. In these cases, the driver will have to regulate the vehicle's speed. A temporary increase in speed, such as when passing 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 as Electronic 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 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.
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 •
engine speed (rpm) is too high/low
• the wheels lose traction
• the parking brake is applied
• the stability system's
ESC Sport Mode is
activated
• the
Off Road drive mode is selected
• The radar sensor is covered by e.g., wet snow or if heavy rain interferes with radar waves
Reactivating ACC from standby modeTo reactivate ACC after it has temporarily been put in standby mode:
–Press the button (1).
> The vehicle will then return to the most
recently set speed .
WARNING
There may be a significant increase in speed after the
button has been pressed.
Related information
•Adaptive Cruise Control (ACC)
* (p. 266)
• Starting and activating Adaptive Cruise Control (ACC) (p. 268)
• Setting an Adaptive Cruise Control timeinterval (p. 272)

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•
Adaptive cruise control passing assistance (p. 284)
• Adaptive Cruise Control (ACC) symbols andmessages (p. 286)
Changing Adaptive Cruise Control (ACC) speed
ACC makes it possible to set various speeds.
Changing a set speed
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 become the set speed assuming that the accel-erator pedal is still depressed when the button ispressed. A temporary increase in speed, such as when passing another vehicle, does not affect the ACCset speed. The vehicle will return to the set speedwhen the accelerator pedal is released. The lowest speed that can be set for ACC is 20 mph (30 km/h). However, ACC can monitorand react to the speed of the vehicle ahead downto a standstill.
ACC not installed at the factoryThis function can be installed in the vehicle afterdelivery if it is equipped with the normal cruisecontrol. If ACC was installed after the vehicle waspurchased, it will differ from the factory-installedversion as follows:
• If the speed of the vehicle ahead goes below 18 mph (30 km/h), ACC disengages (goesinto standby mode) and will no longer modu-late the brakes. The driver will then have tomaintain a safe distance to the vehicle ahead
• The lowest speed at which ACC can bestarted is 20 mph (30 km/h)

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DRIVER SUPPORT
* Option/accessory, for more information, see Introduction.
272
Related information
• Adaptive Cruise Control (ACC)
* (p. 266)
• Starting and activating Pilot Assist (p. 276)
• Setting an Adaptive Cruise Control time interval (p. 272)
Setting an Adaptive Cruise Control time interval
ACC makes it possible to set various time inter- vals to the vehicle ahead.
Different time intervals to the vehicle 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 is activated.
• If the symbol shows two vehicle's, ACC is actively following the vehicle ahead.
• If only one vehicle is displayed, ACC is
not
actively 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 or increase the time interval.
> The distance/time indicator (3) shows the
current time interval.
In order to follow the vehicle ahead as smoothly as 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 put in active mode, this may be because the set

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* Option/accessory, for more information, see Introduction.273
time interval to the vehicle ahead does not allow 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 in current 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. 266)
• Starting and activating Adaptive CruiseControl (ACC) (p. 268)
• Deactivating/resuming Adaptive CruiseControl (ACC) (p. 269)
• Adaptive cruise control passing assistance(p. 284)
• Adaptive Cruise Control (ACC) symbols andmessages (p. 286)
Pilot Assist
*
The Pilot Assist feature helps keep the vehicle in its current traffic lane, at a set speed and a settime interval to the vehicle ahead.
FunctionThe vehicle's camera monitors the traffic lane's side marker lines and a distance monitor helpsmaintain the set time interval to the vehicleahead. Pilot Assist helps provide more relaxed driving in heavy, 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 the vehicle 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 on monitoring 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. If the camera and radar sensor cannot detect the lane's side marker lines or a vehicle ahead, PilotAssist goes into standby mode. When Pilot Assist is in standby mode and your vehicle comes too close to the vehicle ahead, thedriver will be alerted by the Distance Alert func-tion.