We were on our way through Jerome, AZ when I noticed that the ST was over heating again. I pulled over to check the fuse for the electric fan, and the fuse was fine. Then the over-flow container blew its top, and got coolant all over everywhere. We found a Mercedes mechanic, and he looked at it with no luck, so we are taking it to his shop where is boss has domestic engine knowledge. Will keep those iterested parties posted.