This is a follow-up to my question about Googling how to do something that's normally a crime.
Breaking into a car is usually illegal, but there are cases where it is legal (and in some countries mandatory, but that's not relevant here). The two I know of are breaking into someone else's car to rescue a child or domestic animal in hot weather or breaking into your own car for any reason or no reason (as long as it's paid off and you don't try to make an insurance claim, of course).
Since there are cases where it is legal to break into a car, is it legal to publish a guide on how to break into a car online? Does it need to have a disclaimer saying to comply with all applicable laws?
Could the author be held responsible if someone uses the instructions to illegally break into a car?