Fiat 124 Spider 2019 Owner's Manual page 172

Parking Sensor Audible Alert
The audible alert will sound while the system is operating according to the following chart:
Rear Sensor
Distance Detection Area
Farthest distance
Far distance
Middle distance
Close distance
(*) The rate at which the intermittent audible alert increases as the vehicle approaches the obstruction.
Rear Corner Sensor
Distance Detection Area
Far distance
Middle distance
Close distance
(**) The rate at which the intermittent audible alert increases as the vehicle approaches the obstruction.
Note: If an obstruction is detected in a zone for six seconds or more, the audible alert stops, unless the obstruction is within
the close distance zone. If the same obstruction is detected in another zone, the corresponding audible alert is heard.
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Distance Between Vehicle And
Obstruction
Approx. 59 - 23 inches (150 cm - 60 cm)
Approx. 23 -17 inches (60 - 45 cm)
Approx. 17 -13 inches (45 - 35 cm)
Within approx. 13 inches (35 cm)
Distance Between Vehicle And
Obstruction
Approx. 22 - 14 inches (55 - 38 cm)
Approx. 14 - 9.8 inches (38 - 25 cm)
Within approx. 9.8 inches (25 cm)
Audible Alert (*)
Slow intermittent sound
Medium intermittent sound
Fast intermittent sound
Continuous sound
Audible Alert (**)
Medium intermittent sound
Fast intermittent sound
Continuous sound