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EnglishDriver support -> Cross Traffic Alert for your Volvo XC40 2018-2026
DRIVER SUPPORT
Cross Traffic Alert*103
If CTA senses that something is approaching
from the side, this is also indicated with:
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:
Cross Traffic Alert (CTA) is a driver support
that supplements BLIS104 and is designed to
help the driver detect traffic crossing behind
the car when it is reversing.
an acoustic signal - the sound is heard in
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the left-hand or right-hand speaker
according to the direction from which the
object approaches.
The auto-brake subfunction can help the
driver to stop the car in the event of a risk of
collision with an unobserved vehicle.
in strong side winds
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an illuminated icon in the Park Assist
System graphic on the screen.
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on rutted road surfaces.
an icon on the Park assist camera top
view.
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.
Examples of areas where CTA can assist the driver to
detect obstacles during reversing.
This function uses the car's camera and
radar units, which have certain general lim-
itations.
CTA is primarily designed to detect vehicles. In
favourable conditions it may also be able to
detect smaller objects, such as cyclists and
pedestrians.
Illuminated icon for Cross Traffic Alert in the Park
Assist System graphic on the screen.
If the driver does not observe the warning
from CTA and a collision is unavoidable, the
auto-brake function takes effect to stop the
car, after which the driver display shows an
Related information
The function is only active if the car rolls back-
wards or if reverse gear has been selected.
Driver Alert Control (p. 347)
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Limitations for camera and radar unit
(p. 387)
•
103
Cross traffic alert when the car is reversing.
}}
* Option/accessory. 349
DRIVER SUPPORT
|| explanatory text message on why the car was
BLIS* (p. 343)
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Activating or deactivating Cross
Traffic Alert*105
braked.
The driver can choose to switch off the Cross
Traffic Alert (CTA) function.
Activate or deactivate the
function using this button in
the centre display's function
view.
WARNING
Park Assist* (p. 353)
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.
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The driver is advised to read all sec-
tions in the Owner's Manual that relate
to this function to learn about factors
such as its limitations and what the
driver should be aware of before using
the system.
GREEN button indication – the function is
activated.
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GREY button indication – the function is
deactivated.
The function is activated automatically each
time the engine is started.
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.
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Related information
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Related information
Driving support systems (p. 266)
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104
Blind Spot Information
350
* Option/accessory.
DRIVER SUPPORT
However, as your car slowly reverses, the
Limitations of Cross Traffic
Alert*106
angle it makes with the obstructing vehicle/
object changes and the blind sector rapidly
decreases.
The Cross Traffic Alert (CTA) function with
auto-brake may have limited functionality in
certain situations. Brake intervention is active
at speeds below 15 km/h.
Examples of further limitations
The auto-brake subfunction only detects
moving vehicles and therefore cannot
"see" and brake for stationary obstacles, a
cyclist or a pedestrian, for example.
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WARNING
The auto-brake subfunction can only
detect and brake for other vehicles that are
moving – not for stationary obstacles, a
cyclist or a pedestrian, for example.
Dirt, ice and snow covering the sensors
may reduce the functions and deactivate
alerts.
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The car is parked deep inside a parking slot.
CTA has a certain limitation – the CTA sensors
cannot "see" through other parked vehicles or
obstructions, for example.
CTA is automatically deactivated if a
trailer, bicycle rack or similar is connected
to the car's electrical system.
Here are some examples of situations where
CTA’s "field of vision" may be already limited
and approaching vehicles cannot therefore be
detected until they are very close:
For good performance of CTA, there
should be no bicycle rack, luggage carrier
or similar mounted on the car's towbar.
This function uses the car's radar units,
which have certain general limitations.
Related information
In an angled parking slot CTA may be completely
“blind” on one side.
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Blind CTA sector.
Limitations for camera and radar unit
(p. 387)
•
Sector in which CTA can detect/“see”.
105
Cross traffic alert when the car is reversing.
Cross traffic alert when the car is reversing.
106
* Option/accessory. 351
DRIVER SUPPORT
Messages for Cross Traffic
Alert*107
A number of messages regarding Cross
Traffic Alert (CTA) can be shown in the driver
display. Here are some examples.
Message
Specification
The system does not function as it should. A workshop should be contactedA.
Blind spot sensor
Service required
BLISB and CTA have been deactivated as a trailer has been connected to the car's electrical system.
Blind spot system off
Trailer attached
A
An authorised Volvo workshop is recommended.
Blind Spot Information System
B
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 workshopA.
Related information
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BLIS* (p. 343)
107
Cross traffic alert when the car is reversing.
352
* Option/accessory.
