2017 VOLVO XC90 T8 engine

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LOCKS AND ALARM
* Option/accessory.
254 the ignition has been put in mode
I (turn the
start knob to START and release it): the
alarm has been triggered
Related information
• Automatically arming/disarming the alarm (p. 252)
• Deactivating the alarm without a functioningremote key (p. 254)
Deactivating the alarm without a functioning remote key
If the remote key is not functioning properly, the alarm can be turned off and the vehicle can bestarted as follows:
1. Unlock and open the driver's door with the detachable key blade.
> This will trigger the alarm.
Location of the back-up key reader in the cup holder
2. Place the remote key on the back-up keyreader in the tunnel console's cup holder.
3. Turn the start knob to START and release it.
> The alarm will turn off.
Related information
• Alarm (p. 253)
• Detachable key blade (p. 239)
• Starting the engine (p. 390)
• Automatically arming/disarming the alarm (p. 252)
Child safety locks
Child safety locks help prevent children from inadvertently opening one of the rear doors frominside the vehicle.
Electronic * activation/deactivationThe electronic child safety locks can be acti- vated/deactivated as long as the ignition is notcompletely switched off and this can be done forup to two minutes after the engine has beenswitched off if no door has been opened. To activate:
Child safety lock button on the driver door control panel
1. Switch on the ignition or start the engine.

DRIVER SUPPORT
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* Option/accessory.259
Related information
•Driver support systems (p. 258)
• Drive modes (p. 411)
Electronic Stability Control (ESC)
Electronic Stability Control (ESC) helps reduce wheel spin, counteract skidding and to generallyhelp improve directional stability.
A pulsating sound will be audi- ble when the system is activelyoperating and is normal. Accel-eration may also be slightlyslower than normal.
WARNING
ESC is a supplementary aid and cannot deal with all situations or road conditions. The driver is always responsible for operating the vehicle in a safe manner in accordancewith current traffic regulations.
ESC consists of the following functions: • Traction control
• Spin control
• Active Yaw Control
• Engine Drag Control
• Trailer Stability Assist
Traction controlThis function is designed to help reduce wheel spin by transferring power from a drive wheel that begins to lose traction to the wheel on the oppo-site side of the vehicle (on the same axle).
Spin controlThis function is designed to help prevent thedrive wheels from spinning while the vehicle isaccelerating.
Active Yaw ControlAt low speeds, this function helps maintain direc-tional stability by braking one or more of thewheels if the vehicle shows a tendency to skid orslide laterally.
Engine Drag Control EDCEDC helps keep the engine running if the wheelsshow a tendency to lock, e.g., when shifting downin the manual shifting mode or while using theengine's braking function on a slippery surface. Ifthe wheels were to lock, the vehicle wouldbecome more difficult to steer.
Trailer Stability Assist
*1TSA helps stabilize a vehicle that is towing atrailer when the vehicle and trailer have begun tosway. This system is automatically deactivated if the driver selects
Sport mode.
1
This function is included if the vehicle is equipped with a Volvo original trailer hitch.

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DRIVER SUPPORT
* Option/accessory.
260
Related information
• Detachable trailer hitch
* (p. 387)
• Driving with a trailer (p. 384)
• Trailer Stability Assist (TSA) (p. 388)
• Electronic Stability Control (ESC) sport mode (p. 260)
• Electronic Stability Control (ESC) symbolsand messages (p. 261)
Electronic Stability Control (ESC) sport mode
ESC is always activated and cannot be switched off.
However, the driver can select Sport mode,
which offers more active driving characteristics. In Sport mode, the engine management system
monitors movement of the accelerator pedal and steering wheel for sportier driving and allowsmore lateral movement of the rear wheels beforeESC is triggered. Under certain circumstances, such as when driv- ing with snow chains, or driving in deep snow orloose sand, it may be advisable to temporarily use Sport mode for maximum tractive force.
If the driver releases pressure on the accelerator pedal, ETC will also activate to help stabilize thevehicle.
Activating/deactivating Sport modeIn the center display's Function view, tap ESC Sport Mode.
The green indicator light in the button will illuminate to showthat the function has been acti-vated or gray when the functionis deactivated.
When Sport mode is activated, this
symbol will illuminate in the instrument panel. It will remain on until the driverdeactivates the function. ETC will also
return to normal mode when the engine is restar-ted.
Related information
• Electronic Stability Control (ESC) (p. 259)

DRIVER SUPPORT
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261
Electronic Stability Control (ESC) symbols and messages
SymbolMessage Description
Steady glow for 2 seconds when the engine is started.The system is performing a self-diagnostic test.
Flashing symbol. ESC is actively functioning to help counteract wheel spin and/or a skid.
Steady glow.
Sport mode has been activated.
Please note that ESC is not deactivated at this time but its functionality is reduced.
ESC Temporarily offSee the message in the instrument panel.

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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)

DRIVER SUPPORT
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* Option/accessory.263
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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DRIVER SUPPORT
* Option/accessory.
264
Related information
• Starting and activating the Speed Limiter (SL)
* (p. 264)
• Deactivating/reactivating the Speed Limiter
*
(p. 268)
• Changing a Speed Limiter (SL)
* maximum
speed (p. 265)
• Automatic Speed Limiter (ASL)
* (p. 265)
• Activating/deactivating the Automatic SpeedLimiter (ASL)
* (p. 267)
• Changing tolerance for the Automatic Speed Limiter (p. 267)
• Turning the Speed Limiter
* off (p. 269)
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. 263)
• Deactivating/reactivating the Speed Limiter
*
(p. 268)
• Changing a Speed Limiter (SL)
* maximum
speed (p. 265)
• Automatic Speed Limiter (ASL)
* (p. 265)
• Activating/deactivating the Automatic Speed Limiter (ASL)
* (p. 267)
• Changing tolerance for the Automatic Speed Limiter (p. 267)
• Turning the Speed Limiter
* off (p. 269)

DRIVER SUPPORT
* Option/accessory.271
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. 270)
• Switching between Cruise Control and Adaptive Cruise Control
* (p. 274)
• Deactivating/resuming Cruise Control (CC) (p. 272)
• Turning Cruise Control off (p. 273)
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. 270)