Hello Karl,
I am glad you found your problem. I don't know what the part number for those switches are, but if you call the dealer and tell them they will give it to you, Also as all MB vehicles it should have a part number on it. Maybe someone in the forum has access to the system that provides part numbers. Good luck! I heard it was getting really hot over there in France, I hope you are staying cool!
Brian

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Brian W. Heitman

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