you bought the 2005 in 2004?
Yeah....I would disconnect the battery and see what happens.
My 05 cd changer didnt last every long either.
I bought an 08 to replace it so I could have the aux. I also bought the
single cd one so I wouldnt have changer issues again. With the aux I can
iPod it so I dont need all the disks anyways.
Installed it myself then took it to the dealer for some Tech2 (laptop) time to
program it to the car. Been working great ever since.
Cost me $256 shipped for the radio and $80 at teh dealership. I found out later another dealership was less than half that price so shop around for Tech2 time at the different dealerships cause they charge differently.
Anyway....Im happy. The dealership learned something too. They said it couldnt be done. I proved them wrong.