Had my W211 (2007) E280 CDI serviced yesterday which included replacing my worn Poly V (serpentine) belt. Within 20 miles of leaving the garage the red 'battery' symbol appeared on the console and the power steering also failed (wow! I did'nt realise just how heavy the steering really is - almost dangerous!). As I was only one mile from home I decided to continue driving. When I lifted the bonnet I was shocked to see a completly shredded belt! The belt has damaged some of the smaller pullies and also melted itself onto some of them. The garage (local indy who are usually very good)has agreed to recover the vehicle and make good the damage first thing on Monday. Three questions. 1. Any suggestions what would have caused a brand new genuine MB belt to fail? 2. How likely is this to have caused any other damage thats not immediately apparrant? Any thing I can inspect? 3. Could it happen again? I need to drive my young family 400 miles this coming weekend and don't fancy calling out the RAC late at night from the hard shoulder of the M4?