The guy with the S350D got it fixed sometime ago.
Simple solution. I think it was the shifter relay but I'll ask him and report back later.

BTW he is now selling this car for about $14K<. chassis has 120K miles and 100% new engine has about 17K. He has too many cars, snowmobiles etc... and now does more off road sports etc...

more later....

__________________
1979 300D 220 K miles
1995 C280 109 K miles
1992 Cadillac Eldorado Touring Coupe 57K miles SOLD
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1979 240D 140Kmiles (bought for parents) *SOLD.
SAN FRANCISCO/(*San Diego)
1989 300SE 148 K miles *SOLD