I'm not certain, but I believe I've read here on this site that 95 E320's are not really OBD-I or OBD-II.
I guess you could call them OBD-I 1/2. They are a funny middle step between OBD-I and OBD-II.
You cannot plug a scanner tool into them.
We may have to ask Arthur Dalton. I think he's posted on this before.
2001 E430, Bourdeaux Red, Oyster interior.
1973 280SE 4.5, 170,000 miles. 568 Signal Red, Black MB Tex. "The Red Baron".