If the door panel cannot be opened enough to reach and view the door lock assembly search for possible partial disassembly.
Transit side door lock jammed.
How to get into a transit when the key will not work.
Ford transit td280 04 plate jammed side door.
I had to take out the lock to repair and decided to show whats happening when rotary knob gets stuck.
Locate and remove set screws for the door panel.
Usually caused by a broken.
Updated 2019 04 16 video shows how to trigger stuck door latch on ford lincoln mercury mazda cars trucks vans and mini vans.
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.