Car door won't lock, diagnosis and troubleshooting. After proving the part is faulty we swap out the left.
If your car power locks are keeping you out of your car, there may be some easy. Go to a dealer and they will be able to hook up to the computer that controls your. To check an individual lock mechanism, work the door lock manually up and .
While the key is in, work the door manually up and down while using the auto lock at the same time. If the lock tries to move, then it is a frozen lock mechanism.
My power locks work but will not move to actually lock/unlock the doors.. .. problem, I can unlock my doors only to have them lock up before I am at the car door.