This started happening a couple days ago, after turning off the car and attempting to lock the car with the handle button, it will lock (no beep) then unlock- the same way it would if there were keys left inside. The only other set of keys are at my house, so I know that's not the issue. Doesn't do it all the time, but enough to be annoying. Same thing happens if I use the remote- lock, no beep, unlocks. The only way I can get it to beep and stay locked is to open the pass side door and lock it with the pass side door button. Anyone see anything like this?