Your Door is Ajar

This morning I drive to work, and then as I get out and lock the car, I noticed that the horn didn’t sound when I pushed the lock button.  The lights flashed like normal and the doors locked, but no horn.  Strange.  Then as I got in my car again for lunch, I noticed that it was complaining about my door being ajar, even though it wasn’t.

I figure, I need to take my car in for a recall soon anyways, so I’ll just have them take a look when I bring it in.  Then, after lunch, I went and filled up the car with some gas (had about 20 miles to go till I would’ve been stranded), and when I got back in, no more door ajar warnings.  Coincidence?