Okay this is new to me but maybe you guys know the answer. I took my 2003 2.2 diesel Vito Traveliner in to get the Aircon checked, turns out the belt that should drive the compressor doesnt go round it! The place ordered a new belt (too short) they ordered another one (too long) they got one from Mercedes (wrong size again) they spoke to Mercedes who checked my chassis number and they said that vehicle didn't come off the production line with Aircon and they weren't sure what belt would fit it. Any ideas people???