Yes, it sure acted like a ground (it wasn't), a corroded positive (it wasn't), my charger showing a full battery (ah ha!) Outlet for charger had no power and charger indicated full battery when it was dead. I guess I have a power drain someplace. Thanx for your comments. Mercedes Benz is picking up the cost of the Technicians visit.

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Roger
1983 300CD 246k sold
1998 C230 52k
1980 450SL 75k needs AC
1999 Subaru Outback Ltd 43k