is there a child lock or something like that I don't know about? All of a sudden I can't open or lock the driver door with my key while I could do it to passanger.

 

i forgot off the top of my head, but there is something you can use to specifically lube the lock cylinder. try that or it could be something else. read this: http://www.pelicanparts.com/techarti...lock_rekey.htm

these are just a couple ideas.

 

thanks but I think my problem is little different. I can turn the key once in door but nothing happens, the door lock doesn't pop up. When I am inside, I can lock and unlock driver door but from outside I can't..

 

Oh, ok. I see what your sayin now. You need to take off your door panel and look inside. There are metal rods that tie the lock cylinder to the locking mechanism(or latch, can't think of the name right now). Those can pop off as they are connected with plastic clips. Just pull do door panel off and take a look inside.