Hello all. I was listening to the radio I stopped at the store. However, when I took the key out of the ignition, the radio stayed on. I was able to take the key out, open and close the car door with the radio on. Eventually, it did shut off. However, it started to have a mind of its own, sometimes I couldnt' change the volume, or it wouldn't let me change the station. I've never seen anything like it before. Once the radio was off, it wouldnt let me turn it back on. I was on a long drive earlier and was constantly changing the channel if that means anything. Any help would be appreciated!