2017 VOLVO XC90 T8 ESP

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DRIVER SUPPORT
262
SymbolMessage Description
ESC Temporarily offThe ESC system function has been temporarily reduced due to high brake disc temperature. The function reac- tivates automatically when the brakes have cooled.
ESC Service requiredThe ESC system is not functioning properly.
• Stop the vehicle in a safe place, turn off the engine and restart it.
• If the message is still displayed when the engine has restarted, drive to an authorized Volvo workshop to have the system inspected.
WARNING
The stability system is intended to help improve driving safety. It supplements, but cannever replace, the driver's judgment andresponsibility when operating the vehicle.Speed and driving style should always beadapted to traffic and road conditions.
Related information
• Electronic Stability Control (ESC) (p. 259)

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* Option/accessory.
270
Cruise Control (CC)
Cruise Control (CC) is designed to assist the driver by maintaining a set speed. It is primarilyintended for use on long straight roads in steadytraffic, such as on highways and other mainroads in smoothly flowing traffic.
Overview
Function buttons and symbols (generic illustration)
Increases the set speed or CC switches
from standby mode to active mode
The set speed will be resumed
Press to put CC in active mode and set
the current speed or from active mode, press to put CC in standby mode
— Decreases the set speed
Set speed indicator
The vehicle's current speed
The set speed
In models equipped with the optional Adaptive Cruise Control (ACC), the driver can togglebetween CC and ACC – see the article "Switch-ing between Cruise Control and Adaptive CruiseControl".
WARNING
• The vehicle must always be driven according to current traffic/road condi-tions. The driver must take action if CCdoes not maintain a suitable speedand/or distance to other vehicles.
• The driver is always responsible for oper-ating the vehicle in a safe manner.
Related information
•Starting and activating Cruise Control(p. 270)
• Changing Cruise Control speed (p. 271)
• Deactivating/resuming Cruise Control (CC)(p. 272)
• Turning Cruise Control off (p. 273)
• Adaptive Cruise Control (ACC)
* (p. 277)
• Switching between Cruise Control and Adaptive Cruise Control
* (p. 274)
Starting and activating Cruise Control
Cruise Control (CC) must be selected and acti- vated before it can regulate the vehicle's speed.
Selecting CC (putting it in standby
mode)
Function buttons and symbols
–Press ◀ (1) or ▶ (3) to scroll to the CC
(
) function.
> The symbol (4) will be displayed in the instrument panel. This indicates that CC has been selected and can then be acti-vated to maintain a set speed.

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Distance Alert *
Distance Alert is a function that alerts the driver if the time interval to the vehicle ahead is too short.
Distance Alert is active at speeds above approxi- mately 20 mph (30 km/h) and only reacts to avehicle ahead that is driving in the same direc-tion. No information is provided for vehicles driv-ing toward you, moving very slowly, or at a stand-still.
Warning light (generic illustration)
A warning light in the windshield glows steadily if your vehicle is closer to the one ahead than theset time interval.
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.
NOTE
Distance Alert only monitors distance to the vehicle ahead while Adaptive Cruise Control isin standby mode or off.
WARNING
Distance Alert only indicates the distance to the vehicle ahead. It does not affect thespeed of your vehicle.
Head-up-display *
Distance Alert symbol in the windshield (generic illustra- tion)
In vehicle is equipped with the head-up display *,
the symbol in the windshield will only appear if the distance to the vehicle ahead is shorter than the preset value. However, the
Show Driver
Support function has to be activated in the Set-
tings menu. See the article "Head-up display" for additional information.
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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* Option/accessory.277
Distance Alert * limitations
Distance Alert uses the same radar sensor as Adaptive Cruise Control * and has several limita-
tions.
WARNING
• The radar sensor has a limited field of vision. In some situations it may detect avehicle later than expected or not detectother vehicles at all.
• The radar sensor cannot cover all drivingsituations and traffic, weather and roadconditions.
• The driver is responsible for maintaining asafe distance and speed and must inter-vene if the various driver support systemsdo not maintain a suitable speed or suita-ble distance to the vehicle ahead.
• Maintenance of radar sensor componentsmay only be performed by a trained andqualified Volvo technician.
• Strong sunlight, reflections from the roadsurface, strong lighting contrasts or usingsunglasses may make the warning light inthe windshield difficult to see.
WARNING
•
Poor weather or winding roads can affect the radar sensor's capacity to detect vehi-cles ahead.
• A vehicle's size (e.g., a motorcycle) canalso affect the radar sensor's capacity todetect another vehicle. This may result inthe warning light illuminating at a shorterdistance than the one that has been setor not illuminating at all.
• High speeds may also result in the warn-ing light illuminating at a shorter distancethan the one that has been set due tolimitations in the radar sensor's range.
For additional information, see also the article"Radar sensor limitations."
Related information
• Radar sensor limitations (p. 305)
• Distance Alert
* (p. 275)
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.
ACC helps provide more relaxed driving on long trips on highways or other major roads in a rela-tively even flow of traffic.
The camera and radar sensor monitor the distance to the vehicle ahead (generic illustration - certain detailsmay vary from model to model)
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 that

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278vehicle set by the driver. If the radar sensor does not 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 such aswhen there are great differences in speedbetween vehicles, or if the vehicle ahead brakessuddenly. Due to limitations in the radar sensor,braking may occur unexpectedly or not at all. Adaptive Cruise Control can follow another vehi- cle from a standstill up to 125 mph (200 km/h).Always observe posted speed limits. The driver can also toggle between ACC and Cruise Control (CC) – see the article "Switchingbetween Cruise Control and Adaptive CruiseControl".
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 samelane) 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.

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* Option/accessory.281
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) 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) 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. 277)
• Setting an Adaptive Cruise Control timeinterval (p. 284)
• Deactivating/resuming Adaptive CruiseControl (ACC) (p. 281)
Deactivating/resuming Adaptive Cruise Control (ACC)
ACC can be put temporarily in standby mode and then reactivated.
Function buttons and symbols
To temporarily deactivate and put Adaptive Cruise Control in standby mode:
–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.

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* Option/accessory.291
Pilot Assist*
The Pilot Assist feature helps keep the vehicle in its current traffic lane by providing steeringassistance and maintaining an even speed and aset time interval to the vehicle ahead.
FunctionPilot Assist helps provide more relaxed driving on long trips on highways or other major roads in aneven flow of traffic.
Function overview (generic illustration)
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 the camera 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, Pilot Assist will tempo-rarily switch off the steering assistance until thelane's side marker lines become visible again andcan be detected. However, the function's speedand distance monitoring will continue to be acti-vated.
WARNING
Pilot Assist's steering assistance may switch on or off without warning.
The color of the steering wheel symbol indicates the currentstatus of the steering assis-tance function: GREEN: steering assistance is active
GRAY (as in the illustration): steering assistanceis deactivated
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 attempts to regulate speed smoothlybut in situations calling for fast braking, the drivermust apply the brakes. This applies to situationswhere there are considerable differences inspeed or if the vehicle ahead brakes suddenly.Due to the limitations of the camera and radar

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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.