Fiat 500X Owner's Handbook Manual page 128

Activation
The sensors are automatically activated
when reverse gear is selected. As the
distance from the obstacle behind
the vehicle decreases, the frequency of
the acoustic signal increases.
Acoustic signal
When reverse is engaged and there is
an obstacle behind the vehicle, an
acoustic signal is activated and the
signal varies as the distance of the
obstacle from the bumper varies.
The frequency of the acoustic signal:
❒ increases as the distance between
the vehicle and the obstacle decreases;
❒ becomes continuous when the
distance separating the vehicle from the
obstacle is less than about 30 cm;
❒ is constant if the distance between
the vehicle and the obstacle is
unchanged. If this situation concerns
the side sensors, the signal will stop
after approximately 3 seconds to avoid,
for example, indications in the event
of manoeuvres along a wall.
❒ stops immediately if the distance of
the obstacle increases.
When the system emits the acoustic
signal, the volume of the Uconnect™
system is automatically lowered.
126
Detection distances
If several obstacles are detected by the
sensors, only the nearest one is
considered.
Indication on display
The indications regarding the Park
Assist system are shown on the
instrument panel display only if the
"Acoustic signal and display" item in the
"Settings" menu of the Uconnect™
system is selected (for more
information, see the description in the
dedicated chapter).
The system indicates the presence of
an obstacle 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
vehicle. If the obstacle is detected in
the rear central area, a single arc will be
displayed as the obstacle approaches,
first constant, then flashing, in addition
to an acoustic signal.
OPERATION WITH
TRAILER
49)
The operation of the sensors is
automatically deactivated when the
trailer's electrical connection is inserted
in the vehicle's tow hook socket.
Sensors are reactivated on removing
the trailer's electrical connection.
Before using the Park Assist system, it
is recommended to remove the tow
hook ball assembly and the relevant
attachment from the vehicle. Failure to
comply with this prescription may
cause personal injuries or damage to
vehicles or obstacles since, when
the continuous acoustic signal is
emitted, the tow hook ball is already in
a position that is much closer to the
obstacle than the rear bumper.
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, paint,
etc. 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 vehicle, 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;