Ferrari 612 Scaglietti Owner's Manual page 66

If your vehicle is equipped with a system with front and rear sensors,
the distance from the obstacles will be also viewed on the TFT display.
The position and the distance from the obstacle are displayed in the
fields around the vehicle.
The colour represents the distance, while the field represents the
position.
2
The green colour represents the maximum distance detected, the
yellow colour the medium distance and the red colour the minimum
one.
If only the front sensors are active, the rear ones will not be displayed.
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Sensors
To measure the distance from the obstacles, the system uses 4 sensors
fitted in the front bumper and 4 sensors fitted in the rear one.
For the system to operate correctly, the sensors
positioned on the bumpers must be kept clean (remove
any mud, dirt, snow or ice).
Should you need to repaint the bumper or in case of paint touch-ups in the
sensors area, please contact exclusively the F
Incorrect paint application could affect the parking sensor operation.
When cleaning the sensors, be extremely careful to avoid scratching or
damaging them; therefore, do not use dry, rough or hard cloths. The sensors
must be washed with clean water, possibly with car shampoo added. In
car-washes which use steam jet or high pressure cleaning machines, keep the
nozzle at least 10 cm (4 inches) away from the sensors.
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ERRARI ERVICE ETWORK