Yeah I see some intermittent problems with both iPhone (4S) and iPod from time to time. Sometimes it just forgets about the iPod and I've got to eject and reload it (unplug and replug) and from time to time it does not see my iPhone. Don't know what causes it but since one is Bluetooth and the other is USB it's a little perplexing. I'm going to keep an eye on it and see what happens. By the way my Jeep will only be one week old tomorrow so I haven't had it for a real long time.