Do any of you have problems with your compass. I don't have new speakers or any subs in the car, no new audio equipment at all. Saturday(19th) I started the car and compass calibration showed up on my DIC so I went to the school and drive around in circles and car said calibration complete. So today(22nd) I started the car up for work and turned the rear defroster on let the seats heat up for a couple minutes get in the car and compass calibration had shown up again. I did notice though that it seemed like as soon as I turned the rear defroster off the compass came back on and the calibration notice disappeared. Anybody know anything about this.