I have the driver's side- passenger door, "door ajar" acting up on my 2013 Edge. I pulled the top torx inside fastener as was suggested some posts ago. And sprayed with contact cleaner, through the threaded hole. Low and behold what did I hear? A micro switch. The same micro switch actuator sound that I heard when I took the stem and probed the actual white plunger in an up and down motion. So after spraying again I took the long red stem off the spray can, put it through the threaded hole aimed at about one o'clock and was able to run the switch 20 or so cycles listening to the clicks. As a E tech I wish I had some technical insight that would fix this problem for sure but I've been too busy with other issues. I hope this helps in some small way. Thanks to the guys who took the photos and the guy who suggested pulling that torx bolt out! Wife's car is good to go.
p/s I was only able to hear the micro switch in a closed quiet garage. And locating the switch with the spray stem through the hole takes persistence. Also stick with plastic safe contact cleaner.