Not sure what your situation exactly but I went through a episode thinking there was a gremlin in my car. I was new, naive and had no understanding of these cars.

Working under the hood and all of a sudden the doors locked. Unlocked them with the fob and went back to work under the hood and the doors locked. I did this over and over.

I posted it here and one of the gurus told me that if you unlock the car with the fob and don't open a door (drivers?) the car will lock itself up in 60 seconds. Duh.