2018 VOLVO XC90 engine

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CLIMATE CONTROL
* Option/accessory.
234
NOTE
The air conditioning for the third row of seats is automatically activated if any of the thirdrow seat belts are buckled. It is not possible to manually activate air con- ditioning for the third row of seats if the mainair conditioning system is deactivated or the climate system * for the second row of seats is
deactivated.
Related information
• Climate system controls (p. 217)
• Activating and deactivating auto-start of third-row climate control
* (p. 234)
Activating and deactivating auto-
start of third-row climate control *
The air conditioning cools and dehumidifies incoming air as needed.
On models with a 4-zone climate *, the air condi-
tioning for the third row of seats can be set to start automatically when the engine is started. 1. Tap
Settings in the Top view in the center
display.
2. Tap
Climate.
3. Select
Auto Third Row Climate to acti-
vate/deactivate the air conditioning for the third row of seats when the engine is started.
Related information
• Activating and deactivating climate control for the third-row seats
* (p. 233)

KEY, LOCKS AND ALARM
}}
* Option/accessory.237
In rear door*
Lock button with indicator light in rear door.
Illuminated indicator lights in each door indicate that that particular door is locked. If any door isunlocked and opened, the indicator light in thatdoor will go out. The lights in the other doors willremain illuminated.
Related information
•Lock confirmation settings (p. 237)
• Welcome Light (p. 164)
• Using home safe lighting (p. 164)
Lock confirmation settings Settings for how the vehicle confirms locking and unlocking can be adjusted in the center dis-play's Settings menu.
1.
Tap Settings in the center display's Top
view.
2. Tap
My CarLocking.
3. Tap
Visible Locking Feedback to deacti-
vate the function or to select when the vehi- cle should provide a visible response: during
Lock, Unlock or Both.
4. Select to receive an audible response when locking the vehicle by marking
Audible
Locking Feedback.
Folding door mirrors * confirmation
1. Tap
Settings in the center display's Top
view.
2. Tap
My CarMirrors and Convenience.
3. Select
Fold Mirror When Locked to acti-
vate or deactivate the function.
Related information
• Lock indication (p. 236)
Remote key
The remote key is used to lock and unlock doors, the tailgate and the fuel filler door. Theremote key must be in the vehicle in order tostart the engine.
Remote control key, on left, and button-less key ((Key Tag) *), on right.
The remote key is not physically used to start the ignition because the vehicle is standard-equippedwith keyless start (Passive Start). To start thevehicle, the key must be in the front section ofthe passenger compartment, e.g. in the driver'spocket or in a cup holder in the tunnel console.

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KEY, LOCKS AND ALARM
* Option/accessory.
238 The keyless system for locking/unlocking the doors, tailgate (Passive Entry
*) and fuel filler door
is available as an option. This system has a range in a semicircle with a radius of approximately1.5 meter (5 feet) out from the driver's door andapprox. 1 meter (3 feet) out from the tailgate. With keyless start in combination with keyless locking and unlocking, the remote key can belocated anywhere in the passenger compartmentor cargo compartment in order to start theengine. Each remote key supplied with the vehicle can be linked to a driver profile with unique settings forthe vehicle. When a key with a specific profile isused, the vehicle settings are adjusted accordingto that profile.
Buttonless key, Key TagFor vehicles equipped with keyless locking and unlocking *, a smaller, lighter and button-less key
(Key Tag 3
) is also provided. It works the same
way as the regular remote key as regard keyless start and keyless locking and unlocking 4
. It does
not have a detachable key blade and its battery cannot be replaced.
Remote key buttons
The remote key has four buttons, one on the left side and three on the right.
Locking - Press once to lock the doors,
tailgate and fuel filler door and arm the alarm. Press and hold to close all windows.
Unlocking - Press once to unlock the
doors, tailgate and fuel filler door and disarm the alarm. Press and hold to open all windows at the same time 5
.
Tailgate - Unlock and disarm the tailgate
only. On vehicles equipped with the power tailgate *, press and hold to automatically
open the tailgate. Press and hold to close an open tailgate (an audible warning signal will sound).

Panic alarm - Used to attract attention in
emergency situations. Press and hold the button for at least 3 seconds or press twicewithin 3 seconds to activate the turn signalsand horn. To deactivate, wait at least 5 sec-onds and press the button again. If no actionis taken, the panic alarm will deactivate auto-matically after 3 minutes.
WARNING
If anyone is left in the vehicle, make sure that power to the power windows and panoramic roof * is cut off by always taking the remote
key with you when you leave the vehicle.
NOTE
Be aware of the risk of locking the Key Tag in the vehicle. If the remote key/Key Tag is leftin the vehicle, it will be deactivated when thevehicle is locked and the alarm set usinganother valid key. The deactivated key will be reactivated when the vehicle is unlocked.
3 Även kallad sportnyckel.
4 The key is waterproof up to a depth of approx. 10 meters (30 feet) for up to 60 minutes, making it suitable for use in activities in and around water.
5 The total airing function can be used to e.g. quickly air out the vehicle in hot weather.

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KEY, LOCKS AND ALARM
* Option/accessory.
242 For keyless use, a remote key or the Key Tag must be within the shaded areas shown in theillustration, i.e. a semicircle with a radius ofapprox. 1.5 meter (5 feet) along the sides of thevehicle or approx. 1 meter (3 feet) from the tail-gate.
NOTE
The functions of the remote control key can be disrupted by ambient radio waves, build-ings, topographical conditions, etc. The vehi-cle can always be locked/unlocked using thekey blade.
If the remote key is removed from the vehicle
If the remote key is removed from the vehicle while the engine is running, the warning message
Vehicle key not
found Removed from vehicle will be
displayed in the instrument panel and an audible signal will sound when the last door is closed.
The message will disappear when the key is returned to the vehicle and the O button on the
right-side steering wheel keypad is pressed or when the last door is closed again.
Related information
• Remote key (p. 237)
• Antenna locations for the start and lock sys-tem (p. 255) •
Keyless and touch-sensitive surfaces
*
(p. 251)
Replacing the remote key's battery
The battery in the remote key must be replaced when it is discharged.
NOTE
All batteries have a limited service life and must eventually be replaced (does not applyfor Key Tag). The battery's service life variesdepending on how often the vehicle/key isused.
The remote key battery should be replaced if:
the information symbol illuminates and the message
Vehicle key bat. low
See Owner's manual is displayed in
the instrument panel
and/or
• the locks do not react after several attempts to lock or unlock the vehicle using theremote key within approx. 20 meter (65 feet)from the vehicle.
NOTE
Move closer to the vehicle and try to unlock it again.

KEY, LOCKS AND ALARM
}}
* Option/accessory.257
Unlocking the tailgate from insidethe vehicle
The tailgate can be locked from the inside using a button on the dashboard.
1.
Press the button on the dashboard.
> The tailgate will unlock and can be opened from the outside by pressing the rubberized pressure plate on the handle.
2. With the optional power tailgate
* -
Press and hold the
button on the dash-
board.
> The tailgate will open.
Related information
• Locking and unlocking from inside the vehi- cle (p. 255)
• Opening and closing the power tailgate
*
(p. 259)
Activating and deactivating childsafety locks
Child safety locks help prevent children from opening the rear doors from inside the vehicle. There is an electric safety lock * and a manual
safety lock.
Activating and deactivating electric child safety locks *
The electric child safety lock can be activated and deactivated in any ignition mode higher than 0. The lock can be activated and deactivated up
to 2 minutes after the engine is turned off if no door has been opened.
Button for electric activation and deactivation.
1. Start the engine and select any ignition
mode higher than 0.

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KEY, LOCKS AND ALARM
2582. Press the button on the driver's door control
panel. >The message
Rear child lock Activatedwill be shown in the instrument panel and the indicator light will illuminate to showthat the child safety locks are activated.
When the electric child safety locks are activated:
• the rear windows can only be opened usingthe driver's door control panel
• the rear doors cannot be opened from theinside.
To deactivate the child safety locks:
–Press the button on the driver's door control panel. > The message
Rear child lock
Deactivated will be shown in the instru-
ment panel and the indicator light will go out to show that the child safety locks aredeactivated.
When the engine is turned off, the current settingwill be saved. If the locks were activated whenthe engine was turned off, they will remain acti-vated the next time the engine is started.
SymbolMessageMeaning
Rear child lock Acti-
vatedThe child safety locks are acti-vated.
Rear child lock Deacti-
vatedThe child safety locks are deacti-vated.
Activating and deactivating manual child safety locks
Manual child safety lock (this is not the manual door lock).
–Use the detachable key blade in the remote key to turn the control.
The door cannot be opened from the inside.
The door can be opened from both the out- side and the inside.
NOTE
• The door's knob control only locks that specific door, not both rear doors simulta-neously.
• There are no manual child safety locks onmodels equipped with electronic childsafety locks.
Related information
•Locking and unlocking from inside the vehi- cle (p. 255)
• Detachable key blade (p. 248)

DRIVER SUPPORT
* Option/accessory.271
WARNING
While the power steering is working at reduced power, the driver support functionswith steering assistance are not available. In such a situation, the driver display shows the
Power steering failure or Power
Steering Assist Temporarily Reduced
message, combined with a STEERING WHEEL symbol.
Changing the level of steering wheel resistance *
To change the level of steering wheel resistance, see the description of the INDIVIDUAL optionunder "Available drive modes" in the "Drivemodes" section. On models not equipped with drive mode con- trols and the INDIVIDUAL option, steering wheelresistance can instead be set in the center dis-play's Top view under:
SettingsMy CarDrive ModesSteering force
Steering wheel resistance settings cannot be accessed when turning at speeds above10 km/h (6 mph).
Related information
•Drive modes
* (p. 423)
• Pilot Assist (p. 309) •
Lane Keeping Aid (p. 362)
• Steering assistance at risk of collision(p. 370)
• Park Assist Pilot
* (p. 393)
Stability system Roll StabilityControl
The Roll Stability Control (RSC 1
) system helps
minimize the risk of a rollover in the event of e.g. a sudden evasive maneuver or if the vehiclebegins to skid.
The RSC system monitors the lateral angle at which the vehicle is leaning and registers anychanges. Using this information, the system cal-culates the likelihood of a rollover. If there is animminent risk of a rollover, Electronic StabilityControl is activated, engine torque is reduced andbrakes are applied to one or more of the wheelsuntil the vehicle has regained stability.
WARNING
The vehicle

DRIVER SUPPORT
* Option/accessory.
272
Electronic Stability Control
The Electronic Stability Control (ESC 2
) function
helps the driver avoid skidding and improves the vehicle's directional stability.
This symbol will be displayed in the instrument panel when theESC system is intervening. When the ESC has intervened to apply the brakes, a pulsingsound may be heard and the
vehicle may accelerate more slowly than expec-ted when the accelerator pedal is depressed.
The ESC system consists of the following sub- functions: • Stability control 3
• Spin control and active yaw control
• Engine drag control
• Trailer Stability Assist
WARNING
•The Electronic Stability Control system ESC is supplementary driver supportintended to facilitate driving and make itsafer – it cannot handle all situations inall traffic, weather and road conditions.
• ESC is not a substitute for the driver'sattention and judgment. The driver isalways responsible for ensuring the vehi-cle is driven in a safe manner, at theappropriate speed, with an appropriatedistance to other vehicles, and in accord-ance with current traffic rules and regula-tions.
Stability control 3This function helps control the driving and brak-ing force of each individual wheel in an attemptto stabilize the vehicle.
Spin control and active yaw controlThis function is active at low speeds and brakesthe wheels that are spinning to transfer additionalpower from wheels that are not spinning. This function also helps prevent the wheels from spinning while the vehicle is accelerating.
Engine drag control
Engine drag control (EDC
4
) helps prevent inad-
vertent wheel lock, e.g. after downshifting orusing engine braking when driving at low speedson a slippery surface. Inadvertent wheel lock while driving could impair the driver's ability to steer the vehicle.
Trailer Stability Assist *5
Trailer Stability Assist (TSA
6
) is designed to help
stabilize a vehicle that is towing a trailer if thevehicle and trailer have begun to sway. For moreinformation, see "Trailer Stability Assist".
NOTE
The TSA function is deactivated if ESC Sport
Mode is activated.
Related information
• Electronic Stability Control Sport mode (p. 273)
• Activating/deactivating Sport mode in Elec-tronic Stability Control (p. 273)
1
Roll Stability Control
2 Electronic Stability Control
3 Also called traction control.
4 Engine Drag Control
5Trailer Stability Assist is included if the vehicle is equipped with a Volvo original towbar.6
Trailer Stability Assist