Is your 2009 actually a Transit Connect? That was the year they first became available in the US. That's Gen1, right up to 2013, which I own. On this forum, I exchanged posts with another Gen1 owner several months back. He had problems with his door lock system. He determined that it was the door lock actuators -- small electric motors, all alike for all doors on the van. They were inexpensive, and he did the replacement work himself.
If you do have a TC, then do a search of this forum, and see if the info is helpful.