The problem was that I put 70 series tires on the back and had 60 series tires on the front.
This confused the computer. I put new 70 series tires on the front and the problem was solved!! There was only about 1/2 inch of height difference, but that was enough.

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Ben Harrison Carter
1999 Mercedes ML320 87K
1992 Mercedes 300CE 89K
1995 Corvette 29K -- Sold Dec 09
1989 Mercedes 420SEL 99K -- (Sold 4/08)
1968 Mercedes 230S (106K) (Sold 9/06))
1976 Mercedes 450SEL 130K (Just sold - 06)
1961 Mercedes 220Sb (sold years ago)