Tonight I got out of my car to post a letter. The street was quiet, so I left the motor running. As I got out of the car something beeped a couple of times. I assumed it was the car reminding me I had the door open, the engine running and the lights on. Then when I got back to the car, the doors were locked. The remote and key were inside, the radio was working, the headlights were on etc, and I was locked outside. I rang my wife and she brought the spare remote. It didn't unlock the door. She went home again and brought back the spare key. I was able to get back in. All up, it was idling by the side of the road for nearly an hour.
I have a 3 point Flashpoint alarm.
Does anyone have any idea why the door locked, and why the spare remote wouldn't unlock the door?