2019 VOLVO XC90 TWIN ENGINE sensor

||DRIVER SUPPORT
* Option/accessory.
332 The previous illustration
64
shows that Pilot Assist
is set to maintain a speed of 110 km/h (68 mph)
and that there is no target vehicle ahead to fol-
low.
Pilot Assist will provide steering assistance
because it can detect the lane's side marking
lines.
Related information
Pilot Assist (p. 316) Radar sensor
The radar sensor is used by several driver sup-
port systems to detect other vehicles. Note: This illustration is general and details may vary
depending on model.
The radar sensor is used by the following func-
tions:
Distance Alert*
Adaptive Cruise Control*
Lane Keeping Aid
Pilot Assist*
City Safety
Any modifications to the radar sensor may make
its use illegal.
Related information
Radar sensor limitations (p. 333)
Recommended maintenance for the radar
sensor (p. 336)
Radar sensor type approval (p. 336) 64
Note: This illustration is general and details may vary depending on mod\
el.

DRIVER SUPPORT
}}
333
Radar sensor limitations
The radar sensor used by several of the driver
support functions has certain limitations, which
also affect the functions using the radar sensor.
Obstructed camera The area marked in the illustration must be kept free of
decals, objects, solar film, etc.
65 The radar sensor is located on the upper interior
section of the windshield along with the camera.
CAUTION Do not place, affix or mount anything on the
inside or outside of the windshield, or in front
of or around the camera and radar unit – this
could disrupt camera and radar-based func-
tions.
It could cause functions to be reduced, deac-
tivated completely or produce an incorrect
function response. If this symbol and the message
"
Windscreen sensor Sensor
blocked, see Owner's manual" is
displayed in the instrument panel, it
means that the camera and radar sensor are
unable to detect other vehicles, cyclists, pedes-
trians and large animals in front of the vehicle
and that the vehicle's camera and radar-based
functions may be obstructed, reduced, completely
disabled or providing inaccurate responses. The following table shows some of the situations that can cause the mess\
age to be displayed, and suggested actions:
Cause
Action
The area of the windshield in front of the camera/radar sensor is dirty \
or
covered by ice or snow. Clean the windshield in front of the camera/radar sensor and remove dirt\
, ice
and snow.
Thick fog, heavy rain or snow is blocking the radar signals or the camer\
a's
range of visibility. No action. Heavy precipitation may sometimes prevent the camera/radar se\
nsor
from functioning.65
Note: This illustration is general and details may vary depending on mod\
el.

||DRIVER SUPPORT
334
Cause
Action
Water or snow is spraying/swirling up and blocking the radar signals or
the camera's range of visibility. No action. Very wet or snow-covered roads may sometimes prevent the cam-\
era/radar sensor from functioning.
There is dirt between the inside of the windshield and the camera/radar
sensor. Consult a workshop to have the area of the windshield on the inside of t\
he cam-
era's casing cleaned. An authorized Volvo workshop is recommended.
NOTEKeep the windshield in front of the camera
and radar unit clean.
Vehicle speedThe radar sensor's ability to detect a vehicle
ahead is significantly reduced if:
the speed of the vehicle ahead differs greatly
from your vehicle's speed
Limited field of visionThe radar sensor has a limited field of vision. In
some situations, it may detect a vehicle later than
expected or not at all. The radar sensor's field of vision.
The radar sensor's detection of vehicles very
close to your vehicle may be delayed in cer-
tain situations, e.g. if a vehicle pulls inbetween your vehicle and the vehicle directly
ahead. Small vehicles, such as motorcycles, or vehi-
cles that are not driving in the center of the
lane may remain undetected.
In curves, the radar may detect the wrong
vehicle or lose sight of a target vehicle.
Low trailers
Low trailer in the radar shadow.
Low trailers may also be difficult or even impossi-
ble for the radar to detect. The driver should be
extra alert when driving behind vehicles towing
low trailers when Adaptive Cruise Control or Pilot
Assist is activated.

DRIVER SUPPORT
335
High temperaturesIf the temperature in the passenger compartment
is very high, the camera/radar sensor will switch
off temporarily for approx. 15 minutes after the
engine is started to protect its electronic compo-
nents. When the temperature has cooled suffi-
ciently, the camera/radar sensor will automati-
cally restart.Damaged windshield
CAUTIONIf there are cracks, scratches or stone chips
on the windshield in front of any of the cam-
era and radar unit "windows" and this covers
an area of about 0.5 × 3.0 mm
(0.02 × 0.12 in.) or more, contact a workshop
to have the windshield replaced – an author-
ized Volvo workshop is recommended.
Failure to take action could result in reduced
performance for the driver support systems
that use the camera and radar unit.
It could cause functions to be reduced, deac-
tivated completely or produce an incorrect
function response.
To avoid the risk of loss of function, malfunc-
tion or reduced function of the driver support
systems that use the radar unit, the following
also apply:
Volvo advises against repairing cracks,
scratches or stone chips in the area in
front of the camera and radar unit – the
entire windshield should instead be
replaced.
Before replacing the windshield, contact
an authorized Volvo workshop to verify
that the right windshield has been
ordered and installed.
The same type of windshield wipers or
wipers approved by Volvo should be used
for replacement.
CAUTION If the windshield is replaced, the camera and
radar unit must be recalibrated by a workshop
to help ensure proper functioning of all of the
vehicle's camera and radar-based systems –
an authorized Volvo workshop is recom-
mended.
Related information

Radar sensor (p. 332)

DRIVER SUPPORT
336Recommended maintenance for the
radar sensor
In order for the camera/radar sensor to function
properly, the area of the windshield in front of the
unit must be kept free of dirt, ice, snow, etc. and
should be washed regularly with water and car
washing detergent.
NOTE
Dirt, ice and snow covering the camera and
radar unit reduce their function and can make
measurement impossible.
It could cause functions to be reduced, deac-
tivated completely or produce an incorrect
function response.
Related information

Radar sensor (p. 332) Radar sensor type approval
The type approval for the vehicle radar sensor in
the ACC 66
, PA 67
and BLIS 68
functions can be
read here.
ACC, PA and BLISUSA & Canada:
FCC ID: L2C0054TR IC: 3432A-0054TR
FCC ID: L2C0055TR IC: 3432A-0055TR
This device complies with Part 15 of the FCC
Rules and with Industry Canada license-exempt
RSS standard(s).
Operation is subject to the following two
conditions:
(1) This device may not cause harmful
interference, and
(2) This device must accept any interference
received, including interference that may cause
undesired operation.
Cet appareil est conforme aux CNR d

DRIVER SUPPORT
* Option/accessory.337
Camera
The camera is used by several driver support
systems to e.g. detect lane marker lines or road
signs. Note: This illustration is general and details may vary
depending on model.
The camera is used by the following functions:
Adaptive Cruise Control*
Pilot Assist*
Lane Keeping Aid*
Steering assistance at risk of collision
City Safety
Driver Alert Control*
Road Sign Information*
Active high beams*
Related information
Camera limitations (p. 338)
Recommended maintenance for the camera/
radar sensor (p. 341)

DRIVER SUPPORT
}}}}
339 Cause
Action
The area of the windshield in front of the camera/radar sensor is
dirty or covered by ice or snow. Clean the windshield in front of the camera/radar sensor and remove dirt\
, ice and
snow.
Thick fog, heavy rain or snow is blocking the radar signals or the
camera's range of visibility. No action. Heavy precipitation may sometimes prevent the camera/radar se\
nsor from
functioning.
Water or snow is spraying/swirling up and blocking the radar signals
or the camera's range of visibility. No action. Very wet or snow-covered roads may sometimes prevent the came\
ra/
radar sensor from functioning.
There is dirt between the inside of the windshield and the camera/
radar sensor. Consult a workshop to have the area of the windshield on the inside of t\
he camera's
casing cleaned. An authorized Volvo workshop is recommended.
Bright sunlight. No action. The camera/radar sensor will reset automatically when lightin\
g conditions
improve.
NOTEKeep the windshield in front of the camera
and radar unit clean.
High temperaturesIf the temperature in the passenger compartment
is very high, the camera/radar sensor will switch
off temporarily for approx. 15 minutes after the
engine is started to protect its electronic compo-
nents. When the temperature has cooled suffi-
ciently, the camera/radar sensor will automati-
cally restart.
Damaged windshield
CAUTION
If there are cracks, scratches or stone chips
on the windshield in front of any of the cam-
era and radar unit "windows" and this covers
an area of about 0.5 × 3.0 mm
(0.02 × 0.12 in.) or more, contact a workshop
to have the windshield replaced – an author-
ized Volvo workshop is recommended.
Failure to take action could result in reduced
performance for the driver support systems
that use the camera and radar unit. It could cause functions to be reduced, deac-
tivated completely or produce an incorrect
function response.
To avoid the risk of loss of function, malfunc-
tion or reduced function of the driver support
systems that use the radar unit, the following
also apply:
Volvo advises against repairing cracks,
scratches or stone chips in the area in
front of the camera and radar unit – the
entire windshield should instead be
replaced.
Before replacing the windshield, contact
an authorized Volvo workshop to verify

DRIVER SUPPORT
}}
341
Recommended maintenance for the
camera/radar sensor
In order for the camera/radar sensor to function
properly, the area of the windshield in front of
the unit must be kept free of dirt, ice, snow, etc.
and should be washed regularly with water and
car washing detergent.
NOTE Dirt, ice and snow covering the camera and
radar unit reduce their function and can make
measurement impossible.
It could cause functions to be reduced, deac-
tivated completely or produce an incorrect
function response.
Related information

Camera (p. 337) City Safety™
City Safety can alert the driver with light, sound
and pulsations in the brake pedal to help the
driver detect pedestrians, cyclists, large animals
and vehicles that appear suddenly – the vehicle
will then attempt to automatically brake if the
driver does not act within a reasonable amount
of time. Location of the camera and radar sensor
70
.
City Safety can help prevent a collision or lower
the vehicle's speed at the point of impact.
City Safety is an aid intended to assist the driver
if a collision with a pedestrian, large animal,
cyclist or vehicle is imminent.
City Safety can help the driver avoid a collision
when e.g. driving in stop-and-go traffic, when changes in the traffic ahead and driver distraction
could lead to an incident.
The function assists the driver by automatically
applying the brakes if there is an imminent risk of
a collision and the driver does not react in time by
braking and/or steering away.
City Safety activates a brief, forceful braking in an
attempt to stop your vehicle immediately behind
the vehicle or object ahead.
City Safety is activated in situations in which the
driver should have applied the brakes much ear-
lier, which means that the system will not be able
to assist the driver in all situations.
City Safety is designed to be activated as late as
possible to help avoid unnecessary intervention.
Normally, the occupants of the vehicle will not be
aware of City Safety except when the system
intervenes when a collision is imminent.
70
Note: This illustration is general and details may vary depending on mod\
el.