10Year+ Supporting Member
If it were me, I would contact the warranty company by phone. Tell them your issues and ask them what repair shops in your area honor their service contract. I have no idea what part of the country you live in, but if your town is of reasonable size there should be several locations. It does not have to be a new car dealership. It may be an independent service center, but they will need access to the M/B Star machines. If those companies honor your warranty, they should e happy to repair you car because they are being paid by the warranty company. Forget Toyota and Mercedes, they are just going to make you crazy and you don't need that kind of treatment. There are many different service contracts available. I hope yours is a quality product and your car can be repaired to your satisfaction very soon. Good luck.