engine VOLVO XC90 2017 Owner´s Manual

DRIVER SUPPORT
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* Option/accessory.255
Roll stability control (RSC)
Volvo's Roll Stability Control (RSC) is a stability system designed to help minimize the risk of arollover in emergency maneuvers or if a skidshould occur.
RSC registers the amount of change in the lat- eral angle at which the vehicle is leaning. Usingthis information, RSC calculates the likelihood ofa rollover. If there is an imminent risk of a rollover,the stability system is activated, power to theengine is cut and the brakes are applied to oneor more of the wheels until the vehicle regainsstability.
WARNING
The vehicle

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* Option/accessory.
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Related information
• Starting and activating the Speed Limiter (SL)
* (p. 256)
• Deactivating/reactivating the Speed Limiter
*
(p. 260)
• Changing a Speed Limiter (SL)
* maximum
speed (p. 257)
• Automatic Speed Limiter (ASL)
* (p. 257)
• Activating/deactivating the Automatic SpeedLimiter (ASL)
* (p. 259)
• Changing tolerance for the Automatic Speed Limiter (p. 259)
• Turning the Speed Limiter
* off (p. 261)
Starting and activating the Speed Limiter (SL) *
The Speed Limiter (SL) is a feature that has to be selected and activated in order to set a maxi-mum speed.
Selecting SL (putting it in standby mode)
Function buttons and symbols
–Press ◀ (1) or ▶ (3) to scroll to the Speed
Limiter (
) function.
> The symbol (4) will be displayed in the instrument panel. This indicates that SL has been selected and is in standby
mode (no maximum speed has been set).
Activating SL (putting it in active mode and setting a maximum speed)
The engine must be running before SL can be put in active mode. The lowest maximum speedthat can be set is 20 mph (30 km/h).
–With SL in standby mode (the will
be displayed), press the
button (2).
> This puts SL in active mode and sets the vehicle's current speed as the maximum speed.
Related information
• Speed limiter (SL)
* (p. 255)
• Deactivating/reactivating the Speed Limiter
*
(p. 260)
• Changing a Speed Limiter (SL)
* maximum
speed (p. 257)
• Automatic Speed Limiter (ASL)
* (p. 257)
• Activating/deactivating the Automatic Speed Limiter (ASL)
* (p. 259)
• Changing tolerance for the Automatic Speed Limiter (p. 259)
• Turning the Speed Limiter
* off (p. 261)

DRIVER SUPPORT
* Option/accessory.263
NOTE
Before CC can be activated, the vehicle's speed must be at least 20 mph (30 km/h).This is also the lowest speed that can be set.
Activating CC (putting it in active mode and setting a speed)
–With the symbol displayed (CC is in
standby mode), press the
button (2) on
the left-side steering wheel keypad.
> This puts CC in active mode and will maintain the vehicle's current speed.
Related information
• Cruise Control (CC) (p. 262)
• Switching between Cruise Control and Adaptive Cruise Control
* (p. 266)
• Deactivating/resuming Cruise Control (CC) (p. 264)
• Turning Cruise Control off (p. 265)
Changing Cruise Control speed
Changing a set speed
Function buttons and symbols (generic illustration)
–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)/(6) 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 CCset speed. The vehicle will return to the set speedwhen the accelerator pedal is released. Alwaysobserve posted speed limits.
Engine braking instead of applying the
brakes
CC regulates speed by applying the brakeslightly. To avoid a loss of speed when drivingdown hills, use the engine braking functioninstead of letting the CC apply the brakes. In thissituation, the driver can temporarily deactivate theCC braking function. To do so:
–Press the accelerator pedal approx. halfway down and release it.
> CC will automatically deactivate the auto- matic brake function and will then only use the engine braking function.
Related information
• Cruise Control (CC) (p. 262)

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264
Deactivating/resuming Cruise Control (CC) Cruise Control (CC) can be temporarily deacti- vated and put in standby mode.
Deactivating and putting CC in standbymode
To temporarily deactivate and put Cruise Control in standby mode:
Function buttons and symbols (generic illustration)
–Press the button (2).
> The set speed marker (4) and symbols will change colors from WHITE to GRAY. This indicates that CC is temporarily in standby mode and will not maintain a setspeed.
Standby mode due to action by the driver
CC 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 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 when passing another vehicle, does not affect the CCset speed. The vehicle will return to the set speedwhen the accelerator pedal is released.
Automatic standby mode
CC switches automatically to standby mode if:
• the wheels lose traction
• engine speed (rpm) is too high/low
• brake temperature is too high
• the vehicle's speed goes below approx. 20 mph (30 km/h)
In these cases, the driver will have to regulate thevehicle's speed.
Reactivating CC from standby modeTo reactivate CC after it has temporarily been putin standby mode:
–Press the button (1).
> The set speed marker (4) will change color from GRAY to WHITE. 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.
or

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* Option/accessory.
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Switching between Cruise Control and Adaptive Cruise Control *
In models equipped with the optional ACC, the driver can toggle between CC and ACC.
A symbol in the instrument panel will indicate which system is currently being used:
CC
Cruise Control ACC
Adaptive Cruise Control
AA
A If the symbol is WHITE, the function is active. If the symbol is GRAY, the function is in standby mode.
Switching from ACC to CCTo switch from ACC to CC: 1. Put ACC in standby mode with the
but-
ton on the left-side steering wheel keypad.
2. From the center display's Function view, tap the
Cruise control button. The button's indi-
cator will change from GRAY to GREEN.
> The symbol in the instrument panel will
change from
(ACC) to (CC) and CC is in standby mode (ready for use but not currently maintaining a setspeed). 3.
Press the
button on the left-side steer-
ing wheel keypad.
> CC goes into active mode and sets the vehicle's current speed.
WARNING
Switching from ACC to CC means that:
• Your vehicle will
no longer automatically
maintain a set distance to a vehicle ahead.
• Only the set speed will be maintained andthe driver will have to apply the brakeswhen needed.
If CC was activated when the engine was turnedoff, ACC will be selected and go into standbymode when the engine is restarted.
Switching from CC to ACCTo switch from CC to ACC: 1. Put CC in standby mode with the
button
on the left-side steering wheel keypad. 2. In the center display's Function view, tap the
Adaptive Cruise Control button. The but-
ton's indicator will change from GREEN to GRAY.
> The symbol in the instrument panel will
change from
(CC) to (ACC) and ACC is in standby mode (ready for use but not currently maintaining a setspeed/time interval).
3. Press the
button on the left-side steer-
ing wheel keypad.
> ACC goes into active mode and sets the vehicle's current speed and the selected time interval to the vehicle ahead.
Related information
• Cruise Control (CC) (p. 262)
• Adaptive Cruise Control (ACC)
* (p. 269)
• Center display overview (p. 28)

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WARNING
When ACC is in standby mode, the driver has to control the vehicle's speed and distance toa vehicle ahead. When ACC is in standby mode, the driver will be 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 in standby 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 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
• 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 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 mode
Generic illustration
To 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. 269)
• Starting and activating Adaptive Cruise Control (ACC)
* (p. 272)
• Setting an Adaptive Cruise Control time interval (p. 276)

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WARNING
At speeds above 20 mph (30 km/h), if ACC
changes targets from a moving vehicle to a stationary one, the system will not react to the
stationary vehicle and will accelerate to the previously set speed. The driver must actively apply the brakes to slow/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 functionIn 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 in one of the following ways:
• Press the
button on the left-side
steering wheel keypad.
• Press the accelerator pedal.
> ACC will resume following the vehicle ahead (target vehicle) if it begins to move within approx. 6 seconds.
NOTE
ACC can keep the vehicle at a standstill for up to 5 minutes, after which the parking brakewill be set and ACC will go into standbymode. The parking brake has to be released before ACC can be reactivated.
Deactivation of the auto-hold brake function
In certain situations, auto-hold will be deactivated when the vehicle is at a standstill and ACC will gointo standby mode. This means that the brakes will be released and the vehicle can begin to roll. The driver must actively apply the brakes to keep the 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 R
positions
• the driver puts ACC in standby mode.
Automatically setting the parking brakeIn certain situations, the parking brake is set automatically 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. 269)
• Auto-hold brake function (p. 356)
• Parking brake (p. 360)

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* Option/accessory.291
In standby mode, the driver will have to regulate the vehicle's speed and the distance to the vehi-cle ahead. When Pilot Assist is in standby mode and your vehicle 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 in standby 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's steering 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 as Electronic 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 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.
Pilot Assist switches automatically to standby mode 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., snow or if heavy rain interferes withradar wavesReactivating 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. 283)
• Starting and activating Pilot Assist (p. 286)
• Changing Pilot Assist speed (p. 288)

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* Option/accessory.293
–The driver will then have to reactivate Pilot Assist in one of the following ways:
• Press the
button on the left-side
steering wheel keypad
• Press the accelerator pedal
> Pilot Assist will resume following the vehi- cle ahead (target vehicle) if it begins to move 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 before Pilot Assist can be reactivated.
Deactivation of the auto-hold brake function
In certain situations, auto-hold will be deactivated when the vehicle is at a standstill and Pilot Assistwill go into standby mode. This means that the brakes will be released and the vehicle can begin to roll. The driver must actively apply the brakes to keep the 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 R
positions
• the driver puts Pilot Assist in standby mode
Automatically setting the parking brakeIn certain situations, the parking brake is set automatically to help keep the vehicle at a stand-still. This occurs if Pilot Assist keeps the vehicle at a standstill 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. 283)
• Starting and activating Pilot Assist (p. 286)
• Changing Pilot Assist speed (p. 288)
• Setting a Pilot Assist time interval (p. 289)
• Deactivating/resuming Pilot Assist (p. 290)
• Passing Assistance with Adaptive CruiseControl or Pilot Assist (p. 277)
• Pilot Assist limitations (p. 293)
• Pilot Assist symbols and messages (p. 295)
Pilot Assist limitations
Pilot Assist functionality may be limited in certain situations.
Pilot Assist is designed to help the driver in a number 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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Vehicle's speedThe radar sensor's capacity to detect vehicles ahead is impeded:
• if the speed of the vehicle ahead differsgreatly from your vehicle's speed.
Limited field of visionThe radar sensor has a limited field of vision. Insome situations it may detect a vehicle later thanexpected or not detect other vehicles at all.
Radar sensor's field of vision
In certain situations, the radar sensor cannot detect vehicles at close quarters, for examplea vehicle that suddenly enters the lanebetween your vehicle and the target vehicle.
Small vehicles, such as motorcycles, or vehi- cles not driving in the center of the lane mayremain undetected.
In curves, the radar sensor may detect the wrong vehicle or lose sight of the target vehi-cle.
Low trailer in the radar shadow (generic illustration)
Low trailers may also be difficult to detect or may not be detected at all. The driver should be extraalert in situations of this type.
High temperaturesIf the temperature in the passenger compartmentis very high, the camera and radar sensor may betemporarily turned off for approx. 15 minutesafter the engine has been started to protect theirelectronic components. When the temperaturehas cooled sufficiently, the camera and radarsensor will restart automatically.
Damaged windshield