We have a 2010 Outback. We recently noticed that the alarm system seems to be going off on its own. This morning I made sure all the doors, windows and hood were securely tight and pressed the lock button on the key fod to activate the alarm. I then walked across the street and within a couple minutes the car began making a beeping sound similar to when you unlock the car and a minute or so late the alarm went off full force. I tried it again and the same thing happened. Does anyone have any ideas? The owner manual didn't seem to specify. We had the enhanced alarm system installed by the dealer with the remote starter. Thanks.