F 250 4WD Super Duty V10-6.8L VIN Z CNG (2003)
Parking Assist Warning Indicator: Description and Operation
Parking Aid Speaker-Audible Warning Tone (located on the PAM)
A 750 kHz variable warning tone is generated from a speaker located inside the RH cowl kick panel.
The speaker increases its warning tone rate as the vehicle gets closer to an obstacle.
When an object is detected within 25 cm (10 in) of the sensors, the warning tone becomes continuous.