Thanks. The sensor will be next. The dealer wants $61. There is no rhyme or reason why some of the dealer's parts cost less than you can buy them for on the secondary market and others are five times more expensive. I asked the parts guy if he thought the prices would go down if the Euro reached parity (or less), as I fully expect it will. He laughed and said they never go down--always up.

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1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles