I admire the way you kept going back to the dealership. Unfortunately I kept doing the same thing...until teh day that they found a $4,000 fault...sound familiar to you? Time to vote with my feet! Hopefully I have found an honest person to service my MB...NOT a dealership....just ask questions and check around, there are still some people trying to make an honest living in servicing MBs. Just remember that people on the net do not call them "stealerships" for nothing! Good luck.