2019 VOLVO XC90 TWIN ENGINE lane assist

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* 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.

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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
* 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
349
City Safety and delayed evasive
maneuvers
City Safety can assist the driver by automatically
braking the vehicle when it is not possible to
avoid a collision by steering alone.
City Safety assists the driver by periodically
attempting to predict possible "escape routes" to
the sides of the vehicle in the event a slow-mov-
ing or stationary vehicle were to be detected at a
late stage.
Your vehicle (1) cannot detect any potential escape
routes for veering away from the vehicle ahead (2) and
may therefore apply the brakes at an earlier stage.
Own vehicle
Slow-moving/stationary vehicles
City Safety will not intervene to automatically
apply the brakes if it is possible for the driver to
avoid a collision by steering the vehicle. However, if City Safety determines that an eva-
sive maneuver would not be possible due to traf-
fic in the adjacent lane(s), the function can assist
the driver by automatically starting to apply the
brakes at an earlier stage.
WARNING

The possibility of City Safety predicting a
certain situation is supplementary driver
support intended to improve driving safety
– it cannot handle all situations in all traf-
fic, weather and road conditions.
City Safety 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
appropriate speed, with an appropriate
distance to other vehicles, and in accord-
ance with current traffic rules and regula-
tions.
Limitations of City Safety during evasive
maneuvers
NOTE The function uses the vehicle's combined
camera and radar unit, which has certain gen-
eral limitations; see sections "Camera limita-
tions" and "Radar sensor limitations".
Related information

City Safety™ (p. 341)
Camera limitations (p. 338)
Radar sensor limitations (p. 333)

DRIVER SUPPORT
}}
* Option/accessory. 355
BLIS*
The BLIS 74
function is designed to help provide
assistance in heavy traffic with several lanes
moving in the same direction by helping the
driver to detect the presence of vehicles in the
"blind spot" area behind and to the side of the
vehicle.
BLIS is a driver support system designed to alert
the driver of:
vehicles in your "blind spot"
vehicles approaching rapidly in adjacent
lanes. Location of BLIS indicator light.
75 Indicator light
The BLIS button in the center display's Func-
tion view is used to activate/deactivate the
function. BLIS overview
Blind spot zone
Rapidly approaching vehicle zone.
The BLIS function is active at speeds
above 10 km/h (6 mph).
The system is designed to react to: vehicles passing your vehicle
vehicles that are rapidly approaching your
vehicle from behind.
When BLIS

detects a vehicle in zone 1 or a rap-
idly approaching vehicle in zone 2, an indicator
light will illuminate in the relevant rearview mirror
and glow steadily. If the driver then uses the turn
signal on the side in which the warning has been 74
Blind Spot Information Systems
75 Note: This illustration is general and details may vary depending on mod\
el.

DRIVER SUPPORT
* Option/accessory.
372 Selecting guidance to a rest area if
the Driver Alert Control warning has
been given
The Rest Stop Guidance function can be
switched on or off.
In vehicles equipped with Sensus Navigation*, the
driver can activate a guide that can automatically
suggest a suitable rest stop if the DAC warning
is given.
To select Rest Stop Guidance:
1. Tap Settings in the center display's Top
view.
2.

Select My Car IntelliSafe Driver Alert
Control .
3. Select/deselect Rest Stop Guidance to
activate/deactivate the function.
Related information
Driver Alert Control (p. 370) Driver Alert Control limitations
Driver Alert Control (DAC) functionality may be
reduced in certain situations.
In certain situations, the system may provide a
warning even if it has not detected a change in
driving behavior, e.g.:
in strong crosswinds
on grooved road surfaces.
WARNING In certain cases, driving behavior might not be
affected despite the driver's fatigue – when
using the Pilot Assist function – resulting in
the driver not getting a warning from DAC.
It is therefore very important to always stop
and take a break at the slightest sign of fati-
gue, regardless of whether the DAC function
has issued a warning or not.
NOTE
The function uses the vehicle's camera unit,
which has some general limitations – see the
section "Camera unit limitations".
Related information

Driver Alert Control (p. 370)
Camera limitations (p. 338) Lane Keeping Aid
Lane Keeping Aid (LKA 104
) is designed to
actively steer the vehicle on freeways, highways
and other major roads to help the driver reduce
the risk of the vehicle unintentionally veering out
of the lane.
Lake Keeping Assistance steers the vehicle back
into the lane and/or alerts the driver using vibra-
tions in the steering wheel.
Lane Keeping Aid is active at speeds between
65-200 km/h (40-125 mph) on roads with
clearly visible traffic lane marker lines.
On narrow roads, the function may be unavailable
and go into standby mode. The function will
become available again when the road becomes
sufficiently wide. A camera monitors the road/traffic lane's marker lines.
104
Lane Keeping Aid

DRIVER SUPPORT
}}
373 Lane Keeping Aid steers the vehicle back into its lane.
Lane Keeping Aid alerts the driver using vibrations in the
steering wheel
105
. Depending on the settings used, Lane Keeping
Aid functions in different ways:
With
Assist 106
activated: When the vehicle
approaches a lane marker line, LKA will
actively steer the vehicle back into the lane
using light pressure on the steering wheel.
With
Warning 106
activated: If the vehicle is
about to move over a lane marker line, the
driver will be alerted by vibrations in the
steering wheel.
NOTE When the direction indicator is activated, the
Lane Keeping Aid does not provide any warn-
ing or intervene with steering.
WARNING
The Lane Keeping Aid function is supple-
mentary driver support intended to help
improve driving safety – it cannot handle
all situations in all traffic, weather and
road conditions.
The function is not a substitute for the
driver's attention and judgment. 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 accord-
ance with current traffic rules and regula-
tions. 105
The steering wheel vibrations vary. The more time the vehicle is over th\
e lane marker line, the longer the vibrations.
106 See "LKA assistance options" under "Activating/deactivating Lane Keeping\
Aid".

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374
Lane Keeping Aid does not intervene
Lane Keeping Aid does not intervene in sharp inside
curves.
In certain cases, such as when a turn signal is
used or when "straightening out" an inside curve,
Lane Keeping Aid will not provide steering assis-
tance or alerts.
Related information
Steering assistance with Lane Keeping Aid
(p. 374)
Lane Keeping Aid limitations (p. 376)
Activating/deactivating Lane Keeping Aid
(p. 375)
Selecting type of assistance for Lane Keep-
ing Aid (p. 375)
Lane Keeping Aid symbols and messages
(p. 377)
Lane Keeping Aid symbols in the instrument
panel (p. 379) Steering assistance with Lane
Keeping Aid
Lane Keeping Aid (LKA
107
) only functions if the
driver's hands are on the steering wheel.
This symbol on the instrument
panel indicates that LKA is
activated and continuously
monitoring that the driver's
hands are on the steering
wheel. 1. If the driver's hands are not on the steering
wheel, an audible signal will be given and a
message will instruct the driver to actively
steer the vehicle:
Lane Keeping Aid – Apply steering
2. If LKA detects that the driver is not actively steering the vehicle, the message will be
repeated along with a longer audible signal.
3.

If the driver still does not begin actively steer-
ing the vehicle, a short audible signal will be
given in a different tone, LKA will be deacti- 107
Lane Keeping Aid