The doors on my car will not Lock or unlock anymore. I stick the key in and it just turns really easy but nothing happens. at first it was just the driver side door that did this, but now it is both driver and passenger doors. The car will lock when i use the lock button on the dash but not with the key. I wanted to know if anyone had an idea on what the problem could be. I would also like to know how the locking mechanism works. If it is all electrical or what.