Putting your vehicle lineup in the signature line is helpful, as some folks fail to mention what car they are refering to, makes it difficult to diagnose. There is something you might be interested in, E-Class (124) Owner's Bible available, or used to be, here
http://www.toadhallbook.com fbarret@aol.com I'm a 123, and 126 type, BTW, what is a F-27 GS trimaran?