This alarm has happened to me soon after I 1st bought the car. My husband was driving but I had the key in the purse. We went to get out of the car, hit the lock button, and I put my purse behind my seat. After we both closed our doors....the car went screaming. It think it's basically telling you, you left the keys in the car with it locked. So maybe..you can't even lock you keys in the car
