2018 VOLVO XC90 TWIN ENGINE engine

||KEY, LOCKS AND ALARM
* Option/accessory.
240 The keyless system for locking/unlocking the
doors and tailgate (Passive Entry*) is available as
an option. This system has a range in a semicircle
with a radius of approximately 1.5 meter (5 feet)
out from the driver's door and approx. 1 meter
(3 feet) out from the tailgate.
With keyless start in combination with keyless
locking and unlocking, the remote key can be
located anywhere in the passenger compartment
or cargo compartment in order to start the
engine.
Each remote key supplied with the vehicle can be
linked to a driver profile with unique settings for
the vehicle. When a key with a specific profile is
used, the vehicle settings are adjusted according
to 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 and tailgate 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 twice
within 3 seconds to activate the turn signals
and horn. To deactivate, wait at least 5 sec-
onds and press the button again. If no action
is 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 left
in the vehicle, it will be deactivated when the
vehicle is locked and the alarm set using
another 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 aroun\
d water.
5 The total airing function can be used to e.g. quickly air out the vehicl\
e in hot weather.

||KEY, LOCKS AND ALARM
* Option/accessory.
244 For keyless use, a remote key or the Key Tag
must be within the shaded areas shown in the
illustration, i.e. a semicircle with a radius of
approx. 1.5 meter (5 feet) along the sides of the
vehicle 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 the
key 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. 239)
• Antenna locations for the start and lock sys-
tem (p. 257) •
Keyless and touch-sensitive surfaces*
(p. 253) 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 apply
for Key Tag). The battery's service life varies
depending on how often the vehicle/key is
used.
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 the
remote 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. 259
Unlocking the tailgate from inside
the 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. 257)
• Opening and closing the power tailgate*
(p. 261) Activating and deactivating child
safety 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.

||KEY, LOCKS AND ALARM
260
2. Press the button on the driver's door control
panel.
>The message Rear child lock Activated
will be shown in the instrument panel and
the indicator light will illuminate to show
that the child safety locks are activated.
When the electric child safety locks are activated:
• the rear windows can only be opened using
the driver's door control panel
• the rear doors cannot be opened from the
inside.
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 are
deactivated.
When the engine is turned off, the current setting
will be saved. If the locks were activated when
the engine was turned off, they will remain acti-
vated the next time the engine is started. Symbol
Message Meaning Rear child
lock Acti-
vated The child safety
locks are acti-
vated. Rear child
lock Deacti-
vated The 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 on
models equipped with electronic child
safety locks.
Related information
•Locking and unlocking from inside the vehi-
cle (p. 257)
• Detachable key blade (p. 250)

DRIVER SUPPORT
* Option/accessory.273
WARNINGWhile the power steering is working at
reduced power, the driver support functions
with 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 option
under "Available drive modes" in the "Drive
modes" section.
On models not equipped with drive mode con-
trols and the INDIVIDUAL option, steering wheel
resistance can instead be set in the center dis-
play's Top view under:
Settings My Car Drive Modes
Steering force
Steering wheel resistance settings cannot be
accessed when turning at speeds above
10 km/h (6 mph).
Related information
•
Drive modes (p. 445)
• Pilot Assist (p. 311) •
Lane Keeping Aid (p. 364)
• Steering assistance at risk of collision
(p. 372)
• Park Assist Pilot* (p. 395) Stability system Roll Stability
Control
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 vehicle
begins to skid.
The RSC system monitors the lateral angle at
which the vehicle is leaning and registers any
changes. Using this information, the system cal-
culates the likelihood of a rollover. If there is an
imminent risk of a rollover, Electronic Stability
Control is activated, engine torque is reduced and
brakes are applied to one or more of the wheels
until the vehicle has regained stability.
WARNING The vehicle

DRIVER SUPPORT
* Option/accessory.
274 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 the
ESC system is intervening.
When the ESC has intervened
to apply the brakes, a pulsing
sound 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 support
intended to facilitate driving and make it
safer – it cannot handle all situations in
all traffic, weather and road conditions.
• ESC is not a substitute for the driver's
attention and judgment. The driver is
always responsible for ensuring the vehi-
cle is driven in a safe manner, at the
appropriate speed, with an appropriate
distance 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 attempt
to stabilize the vehicle.
Spin control and active yaw controlThis function is active at low speeds and brakes
the wheels that are spinning to transfer additional
power 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 or
using engine braking when driving at low speeds
on 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 the
vehicle and trailer have begun to sway. For more
information, see "Trailer Stability Assist".
NOTE The TSA function is deactivated if
ESC Sport
Mode is activated.
Related information
• Electronic Stability Control Sport mode
(p. 275)
• Activating/deactivating Sport mode in Elec-
tronic Stability Control (p. 275) 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 V\
olvo original towbar.6 Trailer Stability Assist

DRIVER SUPPORT
275
•
Electronic Stability Control Sport mode limi-
tations (p. 276)
• Electronic Stability Control symbols and mes-
sages (p. 277) Electronic Stability Control Sport
mode
The ESC 7
system is always activated and can-
not be switched off. However, the driver can
select ESC Sport Mode, which offers more
active driving characteristics.
With the
ESC Sport Mode sub-function
selected, intervention from ESC is reduced and
more lateral movement is permitted, giving the
driver more control of the vehicle than usual.
When ESC Sport Mode is selected, ESC may
seem to be disabled even though it is often
assisting the driver.
NOTE When the
ESC Sport Mode function is
selected, the trailer stabilizer (TSA 8
) is
switched off. ESC Sport Mode also helps provide maximum
traction if the vehicle gets stuck or is driving on a
loose surface such as deep snow or loose sand.
Related information
• Electronic Stability Control (p. 274) Activating/deactivating Sport mode
in Electronic Stability Control
The ESC
9
system is always activated and can-
not be switched off. However, the driver can
select Sport mode, which offers more active
driving characteristics. Sport mode can be activated/
deactivated in the center dis-
play's Function view. –
Tap the
ESC Sport Mode button in Func-
tion view.
>
Sport mode is activated when the indica-
tor light is green, and deactivated when
the indicator light is gray.
When ESC Sport Mode is activated,
this symbol will illuminate with a steady
glow in the instrument panel. It will
remain on until the driver deactivates
the function or until the engine is turned off. The
ESC system will return to normal mode the next
time the engine is started.
Related information
• Electronic Stability Control (p. 274) 7
Electronic Stability Control
8 Trailer Stability Assist
9 Electronic Stability Control

DRIVER SUPPORT
277
Electronic Stability Control symbols
and messages
A number of symbols and messages related to
Electronic Stability Control (ESC) may be dis-
played in the instrument panel. Some examples of symbols and messages are
shown in the table below.Symbol
Message MeaningSteady glow for
approx. 2 seconds.
System check when the engine is started.Flashing light.
The ESC is actively operating.Steady glow.
Sport mode is activated.
Note: The ESC system is not deactivated in this mode, but has partially reduc\
ed functionality. ESC
Temporarily off
The ESC system's functionality has been temporarily reduced due to hi\
gh brake system temperatures. The
function will be automatically reactivated when the brakes have cooled.
See the message in the instrument panel.ESC
Service required
The ESC system is not functioning properly.
• Stop the vehicle in a safe place, turn off the engine and then restart i\
t.
• Consult a workshop if the message persists ‒ an authorized Volvo workshop is recommended. A text message can be erased by briefly pressing
the
button in the center of the right-side
steering wheel keypad. If the message persists: Contact a workshop ‒ an
authorized Volvo workshop is recommended.
Related information
• Electronic Stability Control (p. 274)