This forum is a wealth of info. I recently purchased a 2010 550 le. Yep power steering problems. It doesn’t work. After reading numorous post. I’ve done about as much as I can. I have determined the relay is working. I have power at the EPS unit. So now what? There’s not much info about where to go now. I’m thinking not much I can do at this point. Has anyone been able to get a unit working from this point other than replacing the unit?