Digital Compass issue

Alright, time for a sanity check from the forum. I noticed that the digital compass in my 2003 G35 Sedan is affected by the fan level. What I mean is, if the fan is turned up high, what I assume is the electro-magnetic field created by it alters the dierection displayed by the digital compass. The difference is as much as two compass points, turning say...., SE into S, etc. Has anyone else experienced this issue, and, maybe more importantly, is this an issue I can go back to the dealership with and expect some sort of positive result?

civdiv