I recently bought an 02 F-150 FX4. Have not had a lot of time to go thru it yet, as it will be a work truck when I get it set up. I notice when I turn the key to the run position it sounds like a CD player under the dash "whirring" for about 5-8 seconds then it stops. It does have some kind of electric brake controller mounted near the bottom of the dash, but the noise is further behind that. If it ever stops snowing or being way below zero I'll get it out of the garage and see if I can figure it out....thought maybe someone may know. All runs good...all options work OK....and it doesn't appear to be related to the factory CD -radio.

Thanks...

 

There is a fuel pump in the back that charges the fuel line to proper pressure each time you turn the key to "run"... ?

 

Nope...not that. It sounds like the noise my laptop makes sometimes. I'll have to get under the dash and see what it is.....I think it may have something to do with that electric brake controller...which I don't understand at all.

 

Does the truck have a disk changer?

 

It has a CD player in the radio....is that what you mean? It is all OEM, but yeah....that is the sound it makes when I turn the key on...but it does not come from the radio area. Sounds like a premium system, which is a total waste since I seldom listen to anything....news and weather sometimes. Where would a disc changer be? ( I'm and old dude...not up on that stuff)

 

Well...it is coming from the radio-Cd player. I have no idea why, sounds like a small fan running inside it when I turn the key on? Maybe that is normal. It all works fine, so I'll just wait and see. Thanks to everyone that responded.

Spotty.

 

Is there a cd in the player?
I have a cd player that I never use and can't
remember it making any noise at all

 

No....I don't think so because I can put one in and it works fine..ejects back out when I hit the button. I have one in my Mustang also and that never makes any noise.