2018 VOLVO XC90 TWIN ENGINE maintenance

||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
312
WARNING
•
The Pilot Assist function is supplementary
driver support intended to facilitate driv-
ing 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).
• Pilot Assist should only be used if there
are clear lane lines painted on each side
of the lane. All other use will increase the
risk of contact with nearby obstacles that
cannot be detected by the functions.
• Pilot Assist is not a substitute for the driv-
er's attention and judgment. The driver is
always responsible for ensuring the vehi-
cle is driven in a safe manner, at the
proper position within the lane, at the
appropriate speed, with an appropriate
distance to other vehicles, and in accord-
ance with current traffic rules and regula-
tions.NOTE Depending on market, this function may be
either Standard or Optional.
Pilot Assist 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.
Pilot Assist attempts to smoothly regulate speed.
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 camera and radar sen-
sor, braking may occur unexpectedly or not at all.
Pilot Assist 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.
• Pilot Assist can follow another vehicle at
speeds from a standstill up to 200 km/h
(125 mph).
• Pilot Assist can provide steering assistance
from near-stationary speeds up to 140 km/h
(87 mph).WARNING •
Pilot Assist is not a collision avoidance
system. The driver must intervene if the
system fails to detect a vehicle ahead.
• Pilot Assist does not brake for people,
animals, objects, small vehicles (e.g.
cycles and motorcycles), low trailers as
well as oncoming, slow or stationary vehi-
cles.
• Do not use Pilot Assist in demanding sit-
uations, such as in city traffic, at intersec-
tions, on slippery surfaces, with a lot of
water or slush on the road, in heavy rain/
snow, in poor visibility, on winding roads,
on highway on- or off-ramps, or with a
trailer connected to the vehicle.
CAUTION Maintenance of the integrated components in
Pilot Assist may only be performed by a work-
shop – an authorized Volvo workshop is rec-
ommended.
In curves and forks in the roadPilot Assist is designed to interact with the driver.
The driver should never wait for steering assis-
tance from Pilot Assist, but instead should always
be ready to increase his or her own steering
efforts, particularly in curves.

||DRIVER SUPPORT
* Option/accessory.
326 The previous illustration
69
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.
In this example, Pilot Assist will provide steering
assistance because it can detect the lane's side
marking lines.
Related information
• Pilot Assist (p. 311) 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. 327)
• Recommended maintenance for the radar
sensor (p. 330)
• Radar sensor type approval (p. 330) 69
Note: This illustration is general and details may vary depending on mod\
el.

DRIVER SUPPORT
330Recommended 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. 326) Radar sensor type approval
The type approval for the vehicle radar sensor in
the ACC 71
, PA 72
and BLIS 73
functions can be
read here.
ACC 71
, PA 72
and BLIS 73USA & 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.331
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. 332)
• Recommended maintenance for the camera/
radar sensor (p. 335)

DRIVER SUPPORT
}}
335
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. 331) 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
75
.
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.
75
Note: This illustration is general and details may vary depending on mod\
el.

DRIVER SUPPORT
344City Safety limitations
City Safety functionality may be reduced in cer-
tain situations.
Surroundings
Low objects
Hanging objects, such as flags for overhanging
loads or accessories such as auxiliary lights or
front protective grids that extend beyond the
height of the hood, may limit City Safety function-
ality.
Slippery road conditions
The extended braking distance on slippery roads
may reduce City Safety's capacity to help avoid a
collision. In these types of situations, the Anti-
lock Braking System and Electronic Stability Con-
trol (ESC 77
) will help provide optimal braking
power with maintained stability.
Backlighting
The visual warning signal in the windshield may
be difficult to detect in bright sunlight, if there are
reflections, or if the driver is wearing sunglasses
or not looking straight ahead.
Heat
If the temperature in the passenger compartment
is high due to e.g. bright sunlight, the visual warn-
ing signal in the windshield may be temporarily
disabled.
Camera and radar sensor's field of vision
The camera's field of vision is limited and in cer-
tain situations, it may be unable to detect pedes-
trians, large animals, cyclists or vehicles, or it may
detect them later than expected.
Vehicles that are dirty may be detected later than
clean vehicles, and in dark conditions, motorcy-
cles may be detected late or not at all.
If a text message displayed in the instrument
panel indicates that the camera/radar sensor is
obstructed, it may be difficult for City Safety to
detect pedestrians, large animals, cyclists, vehi-
cles or lane markings in front of the vehicle. City
Safety functionality may therefore be reduced.
Text messages may not be displayed for all situa-
tions in which the windshield sensors are
blocked. The driver must therefore always keep
the windshield in front of the camera/radar sen-
sor clean.
CAUTION Maintenance and replacement of City Safety
components may only be performed by a
workshop – an authorized Volvo workshop is
recommended.
Driver intervention
Backing up
City Safety is temporarily deactivated when the
vehicle is backing up.
Low speed
City Safety is not activated at very low speeds
under 4 km/h (3 mph). The system will therefore
not intervene in situations in which your vehicle is
approaching another vehicle very slowly, such as
when parking.
Active driver
Action by the driver always has priority. City
Safety will therefore not react or will react at a
later stage with a warning or intervention in situa-
tions in which the driver is clearly steering and
operating the accelerator pedal, even if a collision
is unavoidable.
An active and aware driving style may therefore
delay collision warnings and intervention in order
to minimize unnecessary warnings.
77
Electronic Stability Control

DRIVER SUPPORT
}}
349
given, the indicator light will become brighter and
begin flashing.
NOTE
The light illuminates on the side of the vehicle
where the system has detected the vehicle. If
the vehicle is passed on both sides simulta-
neously, both lights come on.
WARNING
•
The BLIS 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 responsibility for changing lanes
safely and using good judgment always
rests with the driver.
• BLIS 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.
Related information
•Activating/deactivating BLIS (p. 349)
• BLIS limitations (p. 350) •
Recommended maintenance for BLIS
(p. 351)
• BLIS messages (p. 352) Activating/deactivating BLIS
The BLIS
80
function can be activated/deacti-
vated. Location of BLIS indicator light.
81 Indicator light
The BLIS button in the center display's Func-
tion view is used to activate/deactivate the
function.
– Tap the
BLIS button in Function view.
>
The BLIS indicator light shows the status
of the function: GREEN (on) or GRAY
(off).
If BLIS is activated when the engine is started,
the indicator lights in the rearview mirrors will
flash once.
If BLIS is deactivated when the engine is turned
off, it will remain off the next time the engine is
started and the indicator lights will not illuminate.