Rear Sensors; Front Sensors - Ferrari 488GT Owner's Manual

If an obstacle is detected at maximum distance in the central front
part, it will be displayed as shown below (green).
If an obstacle is detected at medium distance in the central front
part, it will be displayed as shown below (orange).
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If an obstacle is detected at minimum distance in the central front
part, it will be displayed as shown below (red).
The maximum, medium and minimum distances between the
vehicle and an obstacle, represented graphically by the colours
green, orange and red, are different for the front and rear parking
sensors:

Rear sensors:

Maximum distance (green): 80 to 70 cm
(150 to 70 cm in central zone)
Medium distance (orange): 69 to 41 cm
Minimum distance (red): 40 to 0 cm.

Front sensors:

Maximum distance (green): 73 to 53 cm
(110 to 70 cm in central zone)
Medium distance (orange): 52 to 31 cm
Minimum distance (red): 30 to 0 cm.