I am about to take my 2015 Journey into the dealership for the same thing that has been happening with our vehicle. Its been doing it since new, now more often. It did it today with only myself waking away from the vehicle. My wife wasn't with me, so only 1 Fob near the vehicle. I keep the horn activated, so you know when it does it you have to lock the vehicle via the Fob for security. Do you know which forum member stated they have not had the problem since the dealership changed out the Drivers Door Master Switch.