I had the SAME message when I picked up my cab in June. My radio would come on only for 10 seconds or so and then the message would pop up and everything would shut down. Mine started when I put a CD in the single CD slot and it wouldn't eject. I took it to the dealer and they ended up ordering an entirely new PCM unit and all is well after the transplant. Just make sure they don't switch it with an older version of the PCM that doesn't play the MP3.