bellnier

I've got a USA-Flex aux adapter attached to changer port of my factory headunit. It has worked fine for 3 months. Lately, when I've played AM or FM, then tried to switch to CD to play iPod, CD button does nothing...HU is stuck on radio. If I turn ignition all the way off, then back on, pushing CD button now works again...sorta like a hard boot. Anyone else hear of this? If I bring this to Scion dealer will they likely tell me "tough luck" since I added aftermarket aux adapter? Help!