Thank you for this post. My electric windows and sunroof stopped working inexplicably; I was pulling my hair out trying to find the cause. I even broke down and took it to an "automotive electrical" shop with no luck (at least they had the decency to not charge me after they realized they didn't have a clue). Problem solved after replacing the comfort relay as indicated in your post! Hopefully, I can keep her going for another 230,000 miles.