I had to take out the lock to repair and decided to show whats happening when rotary knob gets stuck.
Transit side door lock jammed.
In my case i could have probably unhooked the yellow.
How to get into a transit when the key will not work.
Usually caused by a broken.
Ford transit td280 04 plate jammed side door.
If nothing works to open your door go to the interior of the car and face the interior side of the door lock stuck in the lock position.
If the door panel cannot be opened enough to reach and view the door lock assembly search for possible partial disassembly.
Locate and remove set screws for the door panel.