Volvo XC90 Twin Engine (2020 year). Manual in english — page 23
DRIVER SUPPORT
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* Option/accessory.
395
Limitations of Driver Alert Control
The Driver Alert Control (DAC) function may
have limitations in certain situations.
In some cases the system may issue a warn-
ing despite driving ability not deteriorating, for
example:
•
in strong side winds
•
on rutted road surfaces.
WARNING
In some cases, driving behaviour is not
affected despite driver fatigue – e.g. when
using the Pilot Assist
*
function – resulting
in the driver not getting a warning from
DAC.
It is therefore important to always stop and
take a break at the slightest feeling of fati-
gue, regardless of whether the function has
given a warning.
This function uses the car's camera and
radar units, which have certain general lim-
itations.
Related information
•
•
Limitations for camera and radar unit
(p. 358)
Lane assistance
The function of the Lane Keeping Aid (LKA
107
)
is to help the driver to reduce the risk of the
car accidentally leaving its own lane on
motorways and similar major routes.
Lane Keeping Aid steers the car back into its
lane and/or alerts the driver with vibrations in
the steering wheel.
Lane Keeping Aid is active within the speed
range 65–200 km/h (40–125 mph) on roads
with clearly visible side lines.
On narrow roads the function may be unavail-
able, in which case it goes into standby mode.
The function becomes available again when
the road is wide enough.
A camera reads the side lines of the road/lane.
Lane assistance steers the car back into its lane.
Lane assistance warns with steering wheel vibra-
tions.
107
Lane Keeping Aid
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DRIVER SUPPORT
396
Depending on settings, lane assistance acts in
accordance with the following:
•
Assist
activated: When the car is
approaching a lane line, the function will
actively steer the car back into its lane by
applying a slight torque to the steering
wheel.
•
Warning
activated: If the car is about to
cross a lane line, the driver is warned by
means of vibrations in the steering wheel.
There is also an option where both steering
assistance and warning are activated simulta-
neously.
When a direction indicator/flasher is
switched on, there are no steering correc-
tions or alerts from lane assistance.
WARNING
•
The function is supplementary driver
support intended to facilitate driving
and make it safer – it cannot handle all
situations in all traffic, weather and
road conditions.
•
•
Driver support functions are not a sub-
stitute for the driver's attention and
judgement. The driver is always
responsible for ensuring the car is
driven in a safe manner, at the appro-
priate speed, with an appropriate dis-
tance to other vehicles, and in accord-
ance with current traffic rules and reg-
ulations.
Lane assistance does not intervene
Lane assistance does not engage on sharp inside
curves.
In some situations, lane assistance allows lane
lines to be crossed without intervening with
either steering assistance or a warning – e.g.
when using the direction indicators or cutting
bends.
Hands on the steering wheel
For steering assistance with lane assistance to
work, the driver must have his/her hands on
the steering wheel, which the system will con-
tinue to monitor.
If the driver does not keep
his/her hands on the steering
wheel, a warning signal is
heard and a message encour-
ages the driver to steer the
car actively:
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DRIVER SUPPORT
397
•
Lane Keeping Aid
Apply steering
If the driver follows the prompt to start steer-
ing, the function is set in standby mode and
this message is shown:
•
Lane Keeping Aid
Standby until
steering applied
The function will then be unavailable until the
driver starts to steer the car again.
Related information
•
Driving support systems (p. 300)
•
Activating or deactivating lane assistance
(p. 397)
•
Limitations of Lane assistance (p. 398)
•
Symbols and messages for lane assis-
tance (p. 399)
Activating or deactivating lane
assistance
The Lane Keeping Aid (LKA) function (LKA
108
)
is optional – the driver can choose to activate
or deactivate this function.
Activate or deactivate the
function using this button in
the centre display's function
view.
•
GREEN button indication – the function is
activated.
•
GREY button indication – the function is
deactivated.
Related information
•
•
Selecting assistance option for lane assis-
tance (p. 397)
•
Limitations of Lane assistance (p. 398)
Selecting assistance option for
lane assistance
The driver can select how the Lane Keeping
Aid (LKA
109
) should react if the car leaves its
lane.
1. Select
Settings
My Car
IntelliSafe
in the centre display's top view.
2. In the event of
Lane Keeping Aid Mode
,
select how the function should react:
•
Assist
– the driver is given steering
assistance without a warning.
•
Both
– the driver is given a warning
both from the steering wheel vibrating
and from steering assistance.
•
Warning
– the driver is only warned by
steering wheel vibration.
Related information
•
108
Lane Keeping Aid
109
Lane Keeping Aid
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DRIVER SUPPORT
398
Limitations of Lane assistance
In certain demanding conditions lane assis-
tance (LKA
110
) may have difficulty helping the
driver correctly. In such cases it is recom-
mended to switch off this function.
Examples of such conditions are:
•
road works
•
winter road conditions
•
poor road surface
•
a very “sporty” driving style
•
poor weather with reduced visibility
•
roads with unclear or non-existent side
markings
•
sharp edges or lines other than the lane's
side markings
•
as the steering servo for speed-dependent
steering wheel resistance is working at
reduced power – e.g. when cooling due to
overheating.
The function is unable to detect barriers, rails
or similar obstacles at the side of the carriage-
way.
This function uses the car's camera and
radar units, which have certain general lim-
itations.
Related information
•
•
Speed-dependent steering force (p. 300)
•
Limitations for camera and radar unit
(p. 358)
110
Lane Keeping Aid
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DRIVER SUPPORT
}}
399
Symbols and messages for lane
assistance
A number of symbols and messages regar-
ding lane assistance (LKA
111
) can be shown
on the driver display. Here are some exam-
ples.
Symbol
Message
Specification
Driver support system
Reduced functionality Service required
The system does not function as it should. A workshop should be contacted
A
.
Windscreen sensor
Sensor blocked, see Owner's manual
The ability of the camera to scan the roadway in front of the car is reduced.
Lane Keeping Aid
Apply steering
The LKA steering assistance does not function if the driver does not have his/her
hands on the steering wheel. Follow the instruction and steer the car.
Lane Keeping Aid
Standby until steering applied
LKA is set in standby mode until the driver starts to steer the car again.
A
An authorised Volvo workshop is recommended.
111
Lane Keeping Aid
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DRIVER SUPPORT
400
A text message can be cleared by briefly
pressing the
button, located in the centre
of the steering wheel's right-hand keypad.
If a message persists, contact a workshop
A
.
Related information
•
•
Display mode for lane assistance (p. 401)
•
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DRIVER SUPPORT
401
Display mode for lane assistance
Lane assistance (LKA
112
) is visualised by sym-
bols in the driver display depending on the
situation.
Here are some examples of
symbols and the situations in
which they are shown:
Available
Available — the lane lines in the symbol are WHITE.
Lane assistance is scanning one or both lane
lines.
Unavailable
Unavailable — the lane lines in the symbol are GREY.
The Lane assistance cannot detect the lane
lines, the speed is too low or the road is too
narrow.
Indication of steering assistance/warning
Steering assistance/warning - the lane lines in the
symbol are COLOURED.
Lane assistance indicates that the system is
giving a warning and/or attempting to steer
the car back into the lane.
Related information
•
•
Limitations of Lane assistance (p. 398)
112
Lane Keeping Aid
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DRIVER SUPPORT
* Option/accessory.
402
Steering assistance at risk of
collision
The function
Collision avoidance assistance
can help the driver reduce the risk of the car
leaving its lane unintentionally and/or collid-
ing with another vehicle or obstacle by
actively steering the car back into its lane
and/or swerving.
The function consists of these subfunctions:
•
Steering assistance upon risk of run-off
•
Steering assistance upon risk of head-on
collision
•
Steering assistance upon risk of rear-end
collision
*
After automatic engagement, the driver dis-
play indicates that this has occurred via a text
message:
Collision avoidance assistance
Automatic
intervention
WARNING
•
The function is supplementary driver
support intended to facilitate driving
and make it safer – it cannot handle all
situations in all traffic, weather and
road conditions.
•
•
Driver support functions are not a sub-
stitute for the driver's attention and
judgement. The driver is always
responsible for ensuring the car is
driven in a safe manner, at the appro-
priate speed, with an appropriate dis-
tance to other vehicles, and in accord-
ance with current traffic rules and reg-
ulations.
It is always the driver who decides how
much the car should steer – the car can
never take command.
Related information
•
Driving support systems (p. 300)
•
Activating or deactivating steering assis-
tance in the event of a collision risk
(p. 403)
•
Steering assistance upon risk of run-off
(p. 403)
•
Steering assistance upon risk of head-on
collision (p. 404)
•
Steering assistance upon risk of rear-end
collision
•
Limitations for steering assistance at risk
of collision (p. 406)
•
Symbols and messages for steering assis-
tance upon risk of collision (p. 407)
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DRIVER SUPPORT
}}
* Option/accessory.
403
Activating or deactivating steering
assistance in the event of a
collision risk
The steering assistance function is optional –
the driver can choose to activate or deacti-
vate it.
Activate or deactivate the
function using this button in
the centre display's function
view.
•
GREEN button indication – the function is
activated.
•
GREY button indication – the function is
deactivated.
This function is activated automatically each
time the engine is started
113
.
When the
Collision avoidance
assistance
function is deactivated, all sub-
functions are switched off:
•
Steering assistance at risk of road
departure
•
Steering assistance at risk of oncom-
ing collision
•
Steering assistance at risk of rear-end
collision
*
Even though it is possible to deactivate the
function, it is advisable for the driver to
always have it activated since it improves
driving safety in most cases.
Related information
•
Steering assistance at risk of collision
(p. 402)
•
Limitations for steering assistance at risk
of collision (p. 406)
Steering assistance upon risk of
run-off
Steering assistance has a number of subfunc-
tions. Steering assistance in the event of run-
off risk can help the driver and reduce the risk
of the car accidentally leaving the road by
actively steering the car back onto the road.
The function has two activation levels on inter-
vention:
•
Steering assistance only
•
Steering assistance with brake interven-
tion
Steering assistance only
Intervention with steering assistance.
113
In certain markets, the setting used when the engine is switched off is reactivated.
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DRIVER SUPPORT
404
Steering assistance with brake intervention
Intervention with steering assistance and braking.
Brake intervention helps in situations where
steering assistance alone is not sufficient. The
brake force is adapted automatically depend-
ing on the situation at the time of road run-off.
The function is active within the speed range
65-140 km/h (40-87 mph) on roads with
clearly visible lane markings/lines.
A camera scans the edges of the road and the
painted side markings. If the car is about to
leave the side of the road, the car is steered
back onto the road and if the steering inter-
vention is not enough to avoid run-off, the
brakes are also activated.
However, the function does
not
intervene with
either steering assistance or brake interven-
tion if the direction indicators are used. And if
the function detects that the driver is actively
driving the car, activation of the function will
be delayed.
Related information
•
Steering assistance at risk of collision
(p. 402)
•
Limitations for steering assistance at risk
of collision (p. 406)
Steering assistance upon risk of
head-on collision
Steering assistance has a number of subfunc-
tions. Steering assistance upon risk of head-
on collision can help a distracted driver who
does not notice that the car is heading into
the opposite lane.
The function can assist by guiding the car back to its
own lane.
Oncoming vehicles
Your car
At the same time as steering intervention is
activated, collision warning for driver support
is also activated. However, the brake pulse
included in the collision warning will not be
activated.
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DRIVER SUPPORT
* Option/accessory.
405
The function is active within the speed range
60-140 km/h (37-87 mph) on roads with
clearly visible lane markings/lines.
If the car is about to leave its own lane while
an oncoming vehicle is approaching at the
same time, the function can help the driver to
steer the car back into its own lane.
However, the function does
not
intervene with
steering assistance if the direction indicator is
used. And if the function detects that the
driver is actively driving the car, activation of
the function will be delayed.
Related information
•
Steering assistance at risk of collision
(p. 402)
•
Warning from driver support in the event
of a collision risk (p. 339)
•
Limitations for steering assistance at risk
of collision (p. 406)
Steering assistance upon risk of
rear-end collision
*
Steering assistance has a number of subfunc-
tions. Steering assistance if there is a risk of
rear-end collision can help a distracted driver
who does not notice that the car is about to
leave its own lane while an oncoming vehicle
is approaching at the same time, either from
behind or in the blind spot.
The function can assist by steering the car back to its
own lane.
Other vehicle in the blind spot
Your car
If the car is about to leave its own lane while
another vehicle is in the blind spot, or another
vehicle is approaching rapidly in an adjacent
lane at the same time, the function can help
the driver to steer the car back into its own
lane.
The function can even assist if the driver inten-
tionally changes lanes using direction indica-
tors without noticing that another vehicle is
approaching.
The function is active within the speed range
60-140 km/h (37-87 mph) on roads with
clearly visible lane markings/lines.
The lamps in the door mirrors flash during
steering intervention, regardless of whether
the BLIS
114
function is activated.
Related information
•
Steering assistance at risk of collision
(p. 402)
•
•
Limitations for steering assistance at risk
of collision (p. 406)
114
Blind Spot Information
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DRIVER SUPPORT
* Option/accessory.
406
Limitations for steering assistance
at risk of collision
In certain situations the function may have
limited functionality and fail to intervene in
the following cases, for example:
•
for small vehicles, such as motorcycles
•
if the majority of the car has steered into
the adjacent lane
•
on roads/in lanes with unclear or non-exis-
tent lane markings
•
outside the speed range 60-140 km/h
(37-87 mph)
•
as the steering servo for speed-dependent
steering wheel resistance is working at
reduced power – e.g. when cooling due to
overheating.
Other demanding situations can include:
•
road works
•
winter road conditions
•
narrow roads
•
poor road surface
•
a very “sporty” driving style
•
poor weather with reduced visibility.
In these demanding situations, the function
may have difficulty helping the driver correctly.
In such cases it is recommended to switch off
this function.
This function uses the car's camera and
radar units, which have certain general lim-
itations.
Related information
•
Steering assistance at risk of collision
(p. 402)
•
Steering assistance upon risk of run-off
(p. 403)
•
Steering assistance upon risk of head-on
collision (p. 404)
•
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DRIVER SUPPORT
407
Symbols and messages for
steering assistance upon risk of
collision
A number of symbols and messages regar-
ding steering assistance may be shown in the
driver display. Here are some examples.
Symbol
Message
Specification
Collision avoidance assistance
Automatic intervention
When the function is activated, a message is shown to the driver indicating that the
system has been activated.
Windscreen sensor
Sensor blocked, see Owner's manual
The ability of the camera to scan the roadway in front of the car is reduced.
A text message can be cleared by briefly
pressing the
button, located in the centre
of the steering wheel's right-hand keypad.
If a message remains: Contact a workshop –
an authorised Volvo workshop is recom-
mended.
Related information
•
Steering assistance at risk of collision
(p. 402)
•
Limitations for steering assistance at risk
of collision (p. 406)
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DRIVER SUPPORT
* Option/accessory.
408
Park Assist
*
The Park Assist Pilot function can assist the
driver when manoeuvring in tight spaces by
indicating the distance to obstacles through
acoustic signals combined with a graphic in
the centre display.
Screen view showing obstacle zones and sensor sec-
tors.
The centre display shows an overview of the
relationship between the car and detected
obstacles.
The highlighted sector indicates the location
of the obstacle. The closer the car symbol is to
a highlighted sector box at the front/back, the
shorter the distance between the car and
detected obstacle.
The side sectors change colour as the distance
between the car and an object is reduced.
The shorter the distance to the obstacle, the
faster the signal sounds. Other sound from the
audio system is muted automatically.
The acoustic signal for obstacles ahead and to
the sides is active when the car is moving but
stops after the car has been stationary for
approx. 2 seconds. The acoustic signal for
obstacles behind is also active when the car is
stationary.
At a distance within approx. 30 cm (1 ft) from
an obstacle behind or in front of the car, the
tone is constant and the active sensor's field
closest to the car symbol is filled.
At a distance within approx. 25 cm (0.8 ft)
from an obstacle To the sides, the tone pulses
intensively and the active sector field changes
colour from ORANGE to RED.
The volume of the parking assistance signal
can be adjusted while the signal is sounding
by means of the [
>II
] knob on the centre con-
sole. Adjustment can also be performed in the
top view's
Settings
menu option.
Except in the sector nearest to the car
symbol, audible warnings are only given for
objects directly in the path of the car.
WARNING
•
The function is supplementary driver
support intended to facilitate driving
and make it safer – it cannot handle all
situations in all traffic, weather and
road conditions.
•
•
Driver support functions are not a sub-
stitute for the driver's attention and
judgement. The driver is always
responsible for ensuring the car is
driven in a safe manner, at the appro-
priate speed, with an appropriate dis-
tance to other vehicles, and in accord-
ance with current traffic rules and reg-
ulations.
Related information
•
Driving support systems (p. 300)
•
Park Assist Pilot front, rear and along the
sides
•
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DRIVER SUPPORT
}}
* Option/accessory.
409
•
Symbols and messages for Park Assist
Pilot (p. 412)
•
Limitations of Parking assistance (p. 411)
Park Assist Pilot front, rear and
along the sides
*
Park Assist Pilot has different behaviour
depending on which part of the car is
approaching an obstacle.
Forwards
The warning signal has a constant tone at less than
approx. 30 cm (1 ft) from an obstacle.
The Parking Assistance System's front detec-
tors are activated automatically when the
engine is started. They are active at speeds
below 10 km/h (6 mph).
The measuring range is approx. 80 cm (2.5 ft)
in front of the car.
Parking assistance is deactivated when the
parking brake is used or
P
mode is
selected in a car with an automatic gear-
box.
When auxiliary lamps are fitted: Remember
that these must not obscure the sensors -
the auxiliary lamps may then be perceived
as an obstacle.
Backwards
The warning signal has a constant tone at less than
approx. 30 cm (1 ft) from an obstacle.
The sensors for reverse are activated if the car
rolls backward without a gear engaged or
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DRIVER SUPPORT
* Option/accessory.
410
when the gear lever is moved to reverse posi-
tion.
The measuring range is approx. 1.5 metres
(5 ft) behind the car.
When reversing with a trailer connected to the
car's electrical system, parking assistance
backward is deactivated automatically.
When reversing with e.g. a trailer or bike
carrier on the towbar - without Volvo genu-
ine trailer wiring - parking assistance may
need to be switched off manually in order
that the sensors do not react to them.
Along the sides
The warning signal pulses intensively at less than
approx. 25 cm (0.8 ft) from an obstacle.
Parking assistance side sensors are activated
automatically when the engine is started. They
are active at speeds below 10 km/h (6 mph).
The measuring range is approx. 25 cm (0.8 ft)
from the sides.
However, the detection range of the side sen-
sors increases significantly when the steering
angle of the front wheels is increased, and
obstacles of up to approx. 90 cm (3 ft) located
diagonally behind or in front of the vehicle are
detected when the steering wheel is turned.
Related information
•
•
Sensor fields for parking assistance sys-
tem (p. 418)
Activating or deactivating the
parking assistance system
*
The park assist function can be activated or
deactivated.
The front and side parking assistance detec-
tors are activated automatically when the
engine is started. The rear detectors are acti-
vated if the car rolls backwards or when
reverse gear is engaged.
Activate or deactivate the
function using this button in
the centre display's function
view.
•
GREEN button indication – the function is
activated.
•
GREY button indication – the function is
deactivated.
In cars equipped with a park assist camera
*
,
Park Assist Pilot can also be activated or deac-
tivated from the relevant camera view.
Related information
•
•
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