My wife shut off her 2012 Outback for 5 min yesterday to pay a bill. When she got back in to go the power steering quit totally. She was able to muscle it home. We have never had any power steering issues before this. I got home from work later, started it and it seemed fine. I drove around the neighborhood and then shut it off for 5 min and again it quit?? No leaks, fluid looks good. Went back out and hour later and again it worked. Do those power steering pumps fail like that?