I have the same problem. Its not a cold weather thing on this one because its 70 degrees in the shop. All the cables are intact, the door locks are actuating , it seems that the latch itself is jammed. It worked fine until I notice that the door was not locking. I hit the door lock fob from inside the car , and tried the door and it would not open from either handle after that. I am going to try and give the latch a rap with a long screw driver to see if it will knock loose. A great design. I will post back if I get it open.