I'm resurrecting this thread because the radio in my daughter's car started acting this same way. I don't know what incident occurred to get it this way, but I am not getting any error codes on my ECS V-Checker Pro diagnostic tool. The tool allows me to do an output test on the radio which makes a deep bass 'blat' after which the radio will function until the car is shut off again. Can anybody provide a suggestion on what adaptation might need to be made (or corrected) to solve this issue? I wish I had a Bentley manual, but I'm trying to get the car in shape to sell, so spending 100 bucks on a manual just doesn't make sense. Thanks in advance!Anyone know why that we can't hear the radio or change channels? I thought it just needed safe code but I don't think that's it. Just had car worked on and figured it was where battery was unhooked. Any suggestions?? Help!