Gosh, I sure didn't read this post very thoroughly this morning. I actually read this and didn't see my name or the reference to my article. I can't imagine it.
You definitely have a bad evap temp sensor. They are cheap and should be cheap to replace. The MB part# is 210 830 05 72 and MB list is $56. The part is fairly easy to replace on the drivers side of the evap case.
Bosch Master, ASE Master, L1
33 years MB technician