Originally Posted by steve 03accord

We are having the same problem with our 03 Accord. I first noticed this when walking past the locked car. The radio turns on spontaneously without the key in the ignition. It operated at medium volume level then turned off, then back on several times before I intervened. I was able to stop the cycle by turning on the ignition to ACC and then turning off the radio. Our radio also turns off and on unpredictably when driving. could this be related? As I understand it, the radio should not be fully energized unless the ignition is in the ACC position.

We recently had to have the ignition switch replaced (at a cost of $560) after we could not get the key to turn. The radio did not turn on spontaneously before the switch was replaced, but that might be coincidental.