When you push on the door lock it will not go down, it will not lock. Attempting to lock from the outside with a key revealed the lock outside spins sort of loosely, and sorta pops past the locking point. In other words, key doesn't work either. What is the solution? Buy a new lock? I haven't taken the door panel off yet to look at the lock assembly. Is this a hard problem to fix? Anybody else experience this problem? Thanks!
Edit: This is a 1985 318i