2011 ford fusion Se driver door won't open from inside
You have to open the door from the inside there is a rod or the linkage that connects to the actual lock box that may have slipped out or broken you need to check that out to see whether not you need to replace the lock or with another link it you broken and then get the parts from your dealer. Should not be too inexpensive and you can find out how to open the door by going to YouTube.
Until you get a replacement part you can still open the door from the inside. Move the smaller door latch towards you while sitting in the seat and slowly move larger latch until in same position as small latch then grab both and slowly move towards you and that will release the lock in the door. I have the same issue with mine!
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