[gpitts]

I know this sounds really strange (it does to me, too), but when I exit the vehicle and go inside the store, coffee shop, etc. for a few minutes, and open the door on my return, I hear a perfect tone that lasts for approximately one second. It occurs regardless of whether I lock the door, although it is harder to hear as it coincides with the alarm unlock beeps. This just started in the past couple of weeks, so it is definitely a new "feature" of my car. <edit> I should mention that this is not like the usual sounds of the car "waking up". This is a very distinct tone. </edit>

Anyone else experienced this, or know what this tone is communicating?