Alfa Romeo STELVIO 2022 Owner's Handbook Manual page 169

If the obstacle is detected in the front
area (excluding 4-sensor version) or
in the rear left and/or right area, a
single flashing arc will be shown in the
corresponding area on the display and
the system will emit an acoustic signal,
either at frequent intervals or constantly.
If several obstacles are detected
simultaneously in the front area
(excluding 4-sensor version) and rear
area, the display will show all of them,
regardless of the area in which they were
detected.
In general, the car is closer to the
obstacle when a single or several flashing
arcs are shown on the display and the
acoustic warning becomes continuous.
The colour on the display depends on
the distance from and position of the
obstacle.
It is possible to exit from the display
screen by pressing the Rotary Pad. In
any case: the audible signal will remain
active.
Fault indication
Parking sensor faults, if any, will be
indicated by a message on the display on
the instrument panel (see description
in the "Warning lights and messages"
paragraph, "Knowing the instrument
panel" chapter).
Messages on the display
In case of system failure, a dedicated
message appears on the instrument
panel for about 5 seconds.
Cleaning the front or rear sensors: if
the display shows messages requiring
the front or rear sensor cleaning,
make sure that the outer surface and
the underside of the bumper is free
of dirt (e.g. snow, mud, ice, etc.). After
performing this check, place the ignition
device in STOP position, then turn it to
the ON position and check whether the
messages are no longer displayed. If
messages are still displayed, contact an
Alfa Romeo Dealership.
Sound system unavailable: if the
display shows the message that the
audio system is not available, it means
that the acoustic warning will be emitted
by the instrument panel.
Operation with trailer
The operation of the rear sensors is
automatically deactivated when the
trailer is plugged to the tow hook socket
of the car, while the front sensors (only
for 8-sensor versions) stay active and
can provide acoustic and visual warnings.
The rear sensors are automatically
reactivated when the trailer's cable plug
is removed.
When parking, take the utmost care over
obstacles that may be above or under the
sensor. Objects close to the car are not
detected under certain circumstances
and could therefore cause damage to the
car or be damaged.
General warnings
Some conditions may influence the
performance of the parking system:
reduced sensor sensitivity and a
reduction in the parking assistance
system performance could be due to the
presence of: ice, snow, mud, thick paint,
on the surface of the sensor;
the sensor may detect a non-existent
obstacle ("echo interference") due to
mechanical interference, for example
when washing the car, in rain (strong
wind), hail;
the signals sent by the sensor can also
be altered by the presence of ultrasonic
systems (e.g. pneumatic brake systems
of trucks or pneumatic drills) near the
car;
parking assistance system
performance can also be influenced
by the position of the sensors, for
example due to a change in the ride
setting (caused by wear to the shock
absorbers, suspension), or by changing
tyres, overloading the car or carrying out
specific tuning operations that require
the car to be lowered;
the presence of a tow hook without
trailer, which may interfere with the
correct operation of the parking sensors.
Before using the Park Sensors system,
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