I have an '05 AT Coupe and over the past couple months have experienced a high pitched noise coming from behind the glove compartment but not from the engine. It almost sounds like a high pitched electrical feedback or an alert of some sort. Anyhow, I'm wondering if anybody can help me decipher what this noise is.

It only lasts for about 10 seconds...doesn't happen everyday (maybe once every 30 starts) and happens on the first drive of the day. I don't have the NAV system. It really hasn't been a problem in the past, it's only happened about 3 times, but yesterday was crazy. The noise wouldn't stop. I drove with this high pitched beep/noise for about 10 mins!! I parked the car for about 8 hours and when I started the car...no problems. This morning...no problems. I'm sure the noise is coming back soon, but can somebody help me nip this in the bud?