Just got a new 2012 Sportage SX and there is a constant high pitch whine coming from the head unit (I think). It's hard to tell exactly where it's coming from but it is very annoying. It isn't the engine or anything; it makes the noise stopped or moving. It sounds exactly like some laptops/computers that have a CPU whine (common problem with the iCores). It's very quiet and some folks (my wife) can't even hear it, but once you do you can't ever unhear it. It drives me crazy and even causes me a headache after a while. I have to crank up the stereo or open the windows to drown it out. Anyone experience anything like this with their Sprortages?