Alfa Romeo Tonale, Owner'S Handbook Manual, Page: 179 / 296

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System activation
The system is automatically activated
when reverse is engaged.
System deactivation
The system is automatically deactivated
whenever a gear other than reverse is
engaged.
Acoustic warning
When reverse is engaged and there is
an obstacle behind the car, an acoustic
warning with variable frequency is
activated:
increases as the distance between the
car and the obstacle decreases
becomes continuous when the
distance between the car and the
obstacle is less than 30 cm and stops if
the distance increases
is constant if the distance between
the car and the obstacle is unchanged.
If this situation concerns the exterior
sensors, the signal will stop after
approximately 3 seconds to avoid, for
example, indications in the event of
manoeuvres along a wall
If several obstacles are detected by
the sensors, only the nearest one is
considered.
Warning on display
The indications regarding the Park
Sensors system are shown on the Alfa
Connect display only if the respective
item in the "Settings" menu is selected
(see "Settings" in the"Vehicle mode"
paragraph in the "Multimedia" section).
In addition to the acoustic warning, the
system indicates the presence of an
obstacle in the rear area by displaying
a single arc in one of the possible areas,
in accordance with the distance of the
object and the position in relation to the
car.
If several obstacles are detected
simultaneously in the rear area, the
display will show all of them, regardless
of the area in which they were detected.
The colour on the display depends on
the distance from and position of the
obstacle.
Fault indication
Any faults of the parking sensors
are signalled by the relative message
displayed on the instrument panel
display (see the "Warning lights and
messages" chapter in the "Getting to
know the instrument panel” section) and
by the respective icon displayed on the
Alfa Connect system display.
General warnings
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.
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
vehicle
the performance of the system can
be influenced by the position of the
sensors, e.g. by changing the set-up of
the car (due to wear of shock absorbers
or suspensions), replacing the tyres with
others of different sizes, travelling with a
laden car, installing specific set-ups to
lower the car