The drivers side lock quit working. The key is what stop working one real cold day here in pittsburgh. How much should this cost to fix?
Is This A Manual “Put The Key In And Turn” Lock, Or A Remote Key Fob Lock, We’re Talking About?
What year Neon are you repairing?
If it is the key cylinder that is no longer working there is a plastic clip on the rear of the cylinder that can come undone with the rod and cause the key to no longer to work. If this is the problem you would need to remove the door panel to inspect the rear of the key cylinder & rod linkage.