i had the same thing happen to me, one time; but only one time.
Was a nice hot day, all windows down, sunroof open, going around 60 mph, jamming really loud on the stereo. Didn't like the way the door lock/unlock levers rattle in the doors so i had pushed them down, locking the doors.
Shortly after that, i thought i heard my alarm going off, like i said, music was really loud. I turned down the stereo and sure enough, alarm was going off. I reached for the remote on the keychain, pushed the button several times; did not stop it.
I reached over and pushed the alarm switch, did not stop it.
I had to pull of the road, stop the car, shut it off, push the remote button to get it to stop alarming.
I figured that since i had manually locked the doors, and was really pounding the bass, that perhaps the system got confused or that I triggered some sensor.
Since then, I have never had the music that loud while driving.
