Nissan Repair Questions? Ask a Mechanic for Answers ASAP
I have seen this issue a few times. First, are you 100% certain you didn't lose or leave the key and fob in the car? If so, the fob might be pushing against something and locking the doors.
That being said, usually what I see is water intrusion in the driver side door. Sometimes the water will get into the door harness connector that runs to the lock cylinder and cause signal to be sent to the body control module to lock and or unlock the doors. If you remove the inner door panel, sometimes you can see a water trail that goes into the harness and causes the problem. To prevent the door from locking and unlocking, the lock switch on the lock cylinder could be disconnected. This would prevent signal being sent to the control module and the doors would stop locking and unlocking.
This is or should not be related to the locksmiths work. As for the noise inside the steering column, I honestly do not have any explanation for that, but it would not be related to the door lock issue.
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