There is a high frequency sound emanating from all 4 speakers. This noise is constant and can be overheard with the volume up and the radio playing. Leith Lincoln (raleigh, nc) denied the problem. Ford dispatched an engineer and their East coast customer service rep. All claimed they could not "duplicate" the problem. I then confronted leith with a video tape of the noise and got a confirmation that the noise is at least a nuisance. I've been in contact with Ford and they will not fix the problem. Finally I brought the Aviator to another dealership (michael jordan Lincoln in durham) and they "duplicated" the concern. I asked the technition what he suspected might be and he said he did not know. I asked if hey was willing to look into it but he said he was instructed by Ford not to further invistigate the problem on the grounds that the noise is a "feature" of all Aviators. I have video of the sister car at leith that shows that the noise is not present in that car (just like at the time I bought mine). I spoke to a local audio center and they said it is an electrical problem likely due to a faulty ground wire. For more information on my story, visit www.brunners.ws/Lincoln-lemon/.

- Durham, NC, USA