What are common causes for a door not to lock?

Answer:

Answer

Try shooting a thin penetrant into the lock, and trying it. Do this daily for a week and if it doesn't work, replace the lock.

Answer

not enough info. are you saying key doesn't work or manually locking by hand won't work, or both, key turns but door doesn't lock??? etc.

First answer by ID0000000000. Last edit by ID1171818181. Question popularity: 58 [recommend question].