2018 VOLVO XC90 TWIN ENGINE sensor

CLIMATE CONTROL
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* Option/accessory. 207
Activating and deactivating the air
quality sensor*
The air quality sensor is part of the fully automa-
ted Interior Air Quality System (IAQS).
The air quality sensor can be switched on or off.
1.
Tap Settings in the Top view in the center
display.
2. Tap Climate.
3. Select Air Quality Sensor to activate/deac-
tivate the air quality sensor.
Related information
• Interior Air Quality System* (p. 206) Passenger compartment air filter
All air entering the passenger compartment
through the climate control system intake is fil-
tered.
Replacing the passenger compartment
filter
To maintain the high performance of the climate
control system, the filter must be replaced regu-
larly. Follow Volvo's service schedule for recom-
mended replacement intervals. When driving in
areas with a lot of smog, dust, etc., the filter may
need to be changed more frequently.
NOTE There are two types of passenger compart-
ment filters. Make sure that the correct filter
is installed.
Related information
•
Air quality (p. 204)
• Clean Zone* (p. 205)
• Clean Zone Interior Package* (p. 206)
• Interior Air Quality System* (p. 206) Air distribution
The climate system distributes incoming air
through a number of vents in the passenger
compartment.
Automatic and manual air distributionWhen the auto-climate feature is on, air distribu-
tion is regulated automatically. Air distribution can
also be controlled manually.
Adjustable air ventsCertain air vents in the vehicle are adjustable,
which means they can be opened/closed and the
direction of the air flow from the vent can be
adjusted. Location of adjustable air vents in the passenger com-
partment.
Five seats - four vents on the dashboard, two
on the rear side of the tunnel console and

KEY, LOCKS AND ALARM
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* Option/accessory. 265
Foot movement tailgate operation*
To make it easier to operate the tailgate when
your hands are full, it can be opened and closed
by moving your foot in a forward kicking motion
under the rear bumper. The sensor is located to the left of center under the rear
bumper
18
.
One of the vehicle's remote keys must be within
range behind the vehicle (approx. 1 meter (3
feet)) for opening and closing to be possible. This
applies even if the vehicle is unlocked in order to
prevent the trunk lid from inadvertently opening
e.g. at a car wash.
Foot movement operation Kicking motion within the sensor's activation area.
–
Make one slow forward kicking motion with
your foot under the left section of the rear
bumper. Take a step back. Do not touch the
bumper.
>

A brief audible signal will be heard when
opening or closing is activated - the tail-
gate will open/close.
If the tailgate is open, it will always close 19
when the foot motion sensor is activated.
If several opening attempts have been made
without the remote key in range behind the vehi-
cle, foot movement operation will not be available
for a short period of time. Do not keep your foot under the vehicle in a kick-
ing motion. This may prevent activation.
Interrupting opening or closing with a foot
movement
– Make one slow forward kicking motion while
the tailgate is opening or closing to stop its
movement.
The remote key does not need to be within range
of the vehicle to interrupt opening or closing.
NOTE There is a risk of reduced or lost function if
there are large amounts of snow, ice, dirt, etc.
on the rear bumper. Make sure to keep the
bumper clean.
NOTE
Please note that the system could be inadver-
tently activated in a car wash or similar if the
remote key is within range.
Vehicle with skid plate accessory*If the vehicle is equipped with skid plate, the sen-
sor is located towards the left corner of the
bumper.
18
If the vehicle is equipped with skid plate*, the sensor is located towards the left corner of the bumper.
19 Applies to vehicles with power tailgate*.

||KEY, LOCKS AND ALARM
* Option/accessory.
266 To activate opening and closing using a foot
movement on a vehicle with skid plate, make a
kicking motion from the side of the vehicle. One
of the vehicle's remote keys must be within range
(approx. 1 meter (3 feet)) for opening and closing
to be possible.
Kicking motion within the sensor's activation area.
Related information
•
Keyless and touch-sensitive surfaces*
(p. 253)
• Opening and closing the power tailgate*
(p. 261)
• Remote key range (p. 243) Private Locking
The glove compartment and the tailgate can be
locked using the private locking function to pre-
vent them from being opened, e.g. when the
vehicle is left at a workshop or with a valet.
The function button for private
locking is located in the center
display's Function view.
Depending on the current sta-
tus of the lock, Private
Locking Unlocked or Private Locking Locked will be dis-
played.
Related information
• Activating and deactivating private locking
(p. 267)

DRIVER SUPPORT
* Option/accessory.
272 Driver support systems
The vehicle is equipped with a number of driver
support systems that can provide the driver with
active or passive assistance in various situations.
The system can, for example, help the driver
maintain a set speed or a set time interval to the
vehicle ahead, help prevent a collision by warning
the driver and applying the brakes, or assist the
driver while parking.
Some of the systems are standard and others are
options. This also varies from market to market.
Related information
• Speed-dependent steering wheel resistance
(p. 272)
• Electronic Stability Control (p. 274)
• Stability system Roll Stability Control
(p. 273)
• Rear Collision Warning (p. 347)
• Speed limiter (p. 278)
• Cruise control (p. 286)
• Distance Alert* (p. 291)
• Adaptive Cruise Control* (p. 295)
• Pilot Assist (p. 311)
• Radar sensor (p. 326)
• Camera (p. 331)
• City Safety™ (p. 335)
• BLIS* (p. 348) •
Cross Traffic Alert* (p. 353)
• Road Sign Information* (p. 357)
• Driver Alert Control (p. 362)
• Lane Keeping Aid (p. 364)
• Steering assistance at risk of collision
(p. 372)
• Park Assist* (p. 381)
• Park Assist Camera* (p. 386)
• Park Assist Pilot* (p. 395) Speed-dependent steering wheel
resistance
Speed-dependent power steering increases the
steering wheel resistance in pace with the vehi-
cle's speed to give the driver an enhanced feel-
ing of control and stability.
Steering may feel stiffer on highways. When
parking and at low speeds, it will be easier to
move the steering wheel.
NOTE In some situations, the power steering may
become too hot and require temporary cool-
ing – during such time the power steering will
work at reduced output and the steering
wheel may feel more difficult to move.
In parallel with the temporarily reduced steer-
ing assistance, the driver display shows a
message as well as a STEERING WHEEL
symbol.

DRIVER SUPPORT
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* Option/accessory. 295
WARNING•
The radar sensor has a limited field of
vision. In some situations, it may detect a
vehicle later than expected or not detect
other vehicles at all.
• The radar sensor cannot cover all driving
situations and traffic, weather and road
conditions.
• The driver is responsible for maintaining a
safe distance and speed and must inter-
vene if the various driver support systems
do not maintain a suitable speed or suita-
ble distance to the vehicle ahead.
• Maintenance of radar sensor components
may only be performed by a trained and
qualified Volvo technician.
• Strong sunlight, reflections from the road
surface, strong lighting contrasts or using
sunglasses may make the warning light in
the windshield difficult to see. Poor
weather or winding roads can affect the
radar sensor's capacity to detect vehicles
ahead.
• A vehicle's size (e.g., a motorcycle) can
also affect the radar sensor's capacity to
detect another vehicle. This may result in
the warning light illuminating at a shorter
distance than the one that has been set
or not illuminating at all. •
High speeds may also result in the warn-
ing light illuminating at a shorter distance
than the one that has been set due to
limitations in the radar sensor's range.
NOTE The function uses the vehicle's radar unit,
which has some general limitations – see the
section "Radar unit limitations".
Related information
•
Distance Alert* (p. 291) Adaptive Cruise Control*
Adaptive Cruise Control (ACC 41
) helps the
driver maintain a constant speed with a set time
interval to the vehicle ahead.
Adaptive Cruise Control helps provide a more
relaxed driving experience on long trips on high-
ways or long, straight roads with even traffic
flows. The camera/radar sensor measures the distance to the
vehicle ahead
42
.
The driver sets a speed and a time interval to the
vehicle ahead. If the camera/radar sensor detects
a slower-moving vehicle ahead, your vehicle's
speed will be automatically adapted according to
the set time interval to that vehicle. When there
are no longer slower-moving vehicles ahead, the
vehicle will return to the set speed.

||DRIVER SUPPORT
296
WARNING
•
The Adaptive Cruise Control function is
supplementary driver support intended to
facilitate driving and help make it safer –
it cannot handle all situations in all traffic,
weather and road conditions.
• The driver is advised to read all sections
in the Owner's Manual about this function
to learn of its limitations, which the driver
must be aware of before using the func-
tion (see the link list at the end of this
article).
• Adaptive Cruise Control is not a substi-
tute for the driver's attention and judg-
ment. The driver is always responsible for
ensuring the vehicle is driven in a safe
manner, at the appropriate speed, with an
appropriate distance to other vehicles,
and in accordance with current traffic
rules and regulations.
NOTE Depending on market, this function may be
either Standard or Optional.
Adaptive Cruise Control regulates speed by
accelerating and braking. It is normal for the brakes to emit a slight sound when they are
being used to adjust speed.
Adaptive Cruise Control always attempts to regu-
late speed smoothly. The driver must apply the
brakes in situations requiring immediate braking.
For example, when there are great differences in
speed between vehicles or if the vehicle ahead
brakes suddenly. Due to limitations in the radar
sensor, braking may occur unexpectedly or not at
all.
Adaptive Cruise Control is designed to follow a
vehicle ahead in the same lane and maintain a
time interval to that vehicle set by the driver. If the
radar sensor does not detect a vehicle ahead, it
will instead maintain the speed set by the driver.
This will also happen if the speed of the vehicle
ahead exceeds the set speed for your vehicle.
• Adaptive Cruise Control can follow another
vehicle at speeds from a standstill up to
200 km/h (125 mph).
WARNING •
Adaptive Cruise Control is not a collision
avoidance system. The driver is always
responsible and must intervene if the sys-
tem fails to detect a vehicle ahead.
• Adaptive Cruise Control does not brake
for people or animals and does not brake
for small vehicles, such as bikes and
motorcycles. Similarly, it does not brake
for low trailers, oncoming, slow-moving or
stationary vehicles and objects.
• Do not use Adaptive Cruise Control in
demanding situations, such as in city traf-
fic, at intersections, on slippery surfaces,
with a lot of water or slush on the road, in
heavy rain/snow, in poor visibility, on
winding roads, or on on/off ramps.
CAUTION Maintenance of Adaptive Cruise Control com-
ponents may only be performed by a work-
shop – an authorized Volvo workshop is rec-
ommended.
41
Adaptive Cruise Control
42 Note: This illustration is general and details may vary depending on mod\
el.

DRIVER SUPPORT
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303
To temporarily deactivate Adaptive Cruise Control
and put it in standby mode:
– Press the button on the steering wheel
(2).
> The symbol in the instrument panel
changes color from WHITE to GRAY and
the set speed in the center of the speed-
ometer will change from BEIGE to GRAY.
WARNING •
If Adaptive Cruise Control is in standby
mode, the driver must intervene and regu-
late both speed and distance to the vehicle
ahead.
• If the vehicle comes too close to a vehicle
ahead when Adaptive Cruise Control is in
standby mode, the driver is instead warned
of the short distance by the Distance Alert
function.
Standby mode due to action by the driver
Adaptive Cruise Control will be temporarily deac-
tivated and put in standby mode if:
• the brakes are applied.
• the gear selector is moved to N
• the vehicle is driven faster than the set
speed for more than 1 minute Temporarily increasing speed using the accelera-
tor pedal, e.g. when passing another vehicle, will
not affect the setting. The vehicle will return to
the set speed when the accelerator pedal is
released.
Automatic standby mode
Adaptive Cruise Control is dependent on other
systems, such as Electronic Stability Control
(ESC 50
). If any of these other systems stops
working, Adaptive Cruise Control will automati-
cally switch off.
WARNING With automatic standby mode, the driver is
warned by an acoustic signal and a message
on the instrument panel.
•
The driver must then regulate vehicle
speed, apply the brakes if necessary, and
maintain a safe distance to other vehicles.
Adaptive Cruise Control may go into standby
mode if: • your vehicle's speed goes below 5 km/h
(3 mph) and ACC cannot determine if the
vehicle ahead is stationary or if it is another
object, e.g. a speed bump.
• your vehicle's speed goes under 5 km/h
(3 mph) and the vehicle ahead turns so that
ACC no longer has a vehicle to follow. •
the driver opens the door.
• the driver unbuckles the seat belt.
• the engine speed (rpm) is too low/high.
• one or more of the wheels lose traction.
• the brake temperature is high.
• the parking brake is applied.
• the camera/radar sensor is covered by snow
or heavy rain (the camera lens/radar waves
are blocked)
Reactivating Adaptive Cruise Control
from standby mode Note: This illustration is general and details may vary
depending on model.
50
Electronic Stability Control

||DRIVER SUPPORT
* Option/accessory.
310 Symbol
Message MeaningThe symbol is WHITE.
The vehicle is maintaining the set speed.Adaptive cruise
Unavailable
The symbol is GRAY. Adaptive Cruise Control is in standby mode.Adaptive cruise
Service required
The symbol is GRAY. The system is not functioning as intended. Contact a workshop ‒ an authorized Volvo workshop is
recommended. Windscreen sensor
Sensor blocked, see Owner's manual
Clean the windshield in front of the camera and radar sensors.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
• Adaptive Cruise Control* (p. 295)