I recently took my Expedition in for few items and they came back with some rather obnoxious numbers on a quote. I had them fix about $700 worth of items but couldn't choke on what they were charging for a backup sensor replacement. The diagnosis alone was $109 to pinpoint the outer RH backup sensor was faulty. They wanted an additional $440 to fix it. Rather than say yes I figured I would attempt the fix on my own. Taking the complete bumper assembly off of the Eddie Bauer version took me roughly 30 minutes. Not too bad for not knowing how to do it. Of course the Chilton manual didn't have that information in their book.

I took the bad sensor out, drove to the Ford dealer and went directly to the parts counter and matched it up wth exact replacement ($134.00). I put the whole thing back together hoping it would work perfectly.

I did disconnect the battery overnight prior to doing anything! The last thing I did was re-connect the battery (as that is what I had read might allow the system to reset the sensor).

Anyway, upon starting the vehicle and placing the automobile in reverse the same 'check backup aid' continues to appear. Is there any way to reset the diagnostics so that the sensor can be active again. I certainly don't want to head back to the dealer for them to charge me for something I can do at home. Even if there is a diagnostic/reset tool I can purchase I'd be happier owning one then having to continue to pay their outragous fees.

Thanks in advance for any helpful information anyone can give me on this.

-David