Wiper motor problem, 2012 VNL 670

Yes, known Volvo problem. Replace wiper motor.

Often they stop working mid-stroke. They kind of freeze for a second, then start again. Mine has done this a few times and fixed itself.

I don't trust it anymore but I'm lazy. Just replace the motor.

 

Bad motor does not necessarily mean a dead motor. Bad meaning something wrong in it electrically or otherwise that causes enough increase in the amperage that exceeds the fuse limit. When that happens the fuse blows.
What the others describe sounds different from your problem though. They describe the motor freezing momentarily or stop working but they don't mention anything about a blown fuse.

 

True, I just know the motors go bad and it usually starts with freezing. I can't really speak to the fuse issue. I'd test ground and voltage at the plug from wiring harness to wiper motor before I plugged a new motor into it.

 

Had one go out on this truck. Bad motors are an issue with the newer models and was a recall. Not sure you have the same issue, might be a wire that is grounding out. Check all wiring and if nothing I would just replace the motor as that most likely is the problem.