1999 Ford Taurus Q&A
1999 Ford Taurus Question: my key won't unlock/lock my door.
door handle mechanism is bad or something got stuck... - carnaval29
Sounds like a a binding lock cylidner linkage or something that may have been dislodged if anyone ever tried to "slim - jim" the lock through the window. You will need to remove the door panel and inspect the lock and linkage from inside. - DaveJHM
I did experienced this and what I did was bought a spray lubricant and spray the keyhole and behind the key cylinder. I set it aside for the lubricant to work and then I finally could use my keys. - yugten
This has happened on my 1999 Taurus for a while on the drivers side door. Recently, something is wrong with my battery/power system and I can not use the clicker to unlock my door. Usually, I could unlock the door from the passengers side, but now that side is not letting me unlock it with the key. Its exactly like you said, the key goes in but will not turn. I am going to try the spray-lube that one person suggested. - Visitor