Hi, for some time now the lock on my 1997 Ford Fiesta has been playing up. Occasionally it locks and unlocks by itself, I could live with that but now the doors will not open from outside, both sides and I am having to climb in through the hatchback. I can open the doors from inside the car although the drivers side is really stiff, I am having now to leave a window slightly ajar so I can get my arm in to release the handle. Help

Karen, July 2011