Hey Boosted27, this just happened to me this evening, Have the RNS510 and it was working fine this morning, started the car tonight to go home and the radio had no sound, the ipod would'nt give sound either, played around with different settings while driving but figured I'd best leave it till I parked at home. Once home shut the car off, and then turned it back on, still no sound, shut it off again took out the garbage from the garage, got back in the car to park it in the garage and then the sound worked, tried it a few more times and no problems, hope this isnt the start to more problems. If you find anything out post back, if it happens to me again I'm deffinately taking it to the dealer, still under warranty.