Hi Guys. I've always been impressed with the levels of knowledge. professionalism and helpfulness on this site, so have decided to appeal to you all in the hope that someone can help me with a little problem....

I have a 2002 W220 S320cdi which has a full MB history and runs great, but I noticed the other day that the Auxiliary Belt is definately in need of replacement as it is cracked and worn. Problem is, I can't see how to relieve the tension in order to get it off. I've done many other belts with tensioners - VW, Vauxhall, Ford, Peugeot and in each case it was pretty obvious how to de-tension the belts. I'm sure it's just as easy on this car, but only when you know how!

Any help would be much appreciated.