So about two weeks ago I pulled up the the mailbox (the neighborhood grouped kind) and pulled the keys from the ignition without thinking and opened the mailbox got the mail and got back into the car and realized that I wasn't I my Buick. In that car it would set the security light and after a few cycles it would go away. On my 05' it has been popping up everytime I start the car. How do I reset this?

Jeff