I have a 2016 Mustang convertible V6 that has developed a strange problem. While I'm driving the passenger side door becomes slightly unlatched and the door ajar light goes on. If I push against the door from the inside it is resistant to becoming fully open (a good thing). From the outside the door is about 1/2" from the fully closed and latched position. This started several months ago and happened rarely (every two months or so) Lately it is happening every two weeks or so. I have taken...

Passenger side door ajar