I was cleaning the inside of my windshield and did a little maneuver that confused my MS. I got in on the driver side, closed the door and started cleaning the inside of the windshield, I then slid over to the front passenger seat to clean the other end of the windshield and then opened the passenger door and exited. Then, I tried to lock the car by pressing the FOB button - my MS flashed its lights at me and refused to "lock". I checked all doors and they were tightly locked. Finally, I had to open and close the driver door and then it responded positively to my key FOB to lock. Could it be the MS is tracking that I entered through the driver's door but did not exit through it. Why would it do that? I will try it again tonight to repro this "feature"