^^Welcome to the Forum.

From what I can see, there is no setting to disable Autolock. The only settings, (enable/disable) seem to be for Auto Unlock. The door not unlocking issue you mentioned has not previously been reported as far as I can recall. As far as the dealer not ordering parts without an inspection makes perfect sense to me since the cause of the problem couldn't be determined. Perhaps the folks familiar with FORScan can advise if the Autolock function can be changed. Did you get the door lock issue repaired and if so what was the problem?
Peter