Thanks to all,
It is the purge valve or MOT valve, that was stuck. Now ok and no light after I found the OBD 2 Plug under the kneepad on the drivers side. I will replace it next time.

I have a new question guys: Sorry if this is answered already somewhere else.
--If I purchase a MB specific scanner set-up, do I use the 38pin terminal or still use the OBD2 terminal to retrive the factory specific codes? Or another way, are the factory specific codes only obtainable from the 38 pin connector?

--What other type codes do I get from the 38 pin connector?

Thanks alot.

__________________
Regards

Mino Erhan Dallas, TX
'97 SL500 40th A.E.
'97 S320
'01 ML320
'85 Peugeot 505 SW
'07 BMW R1200RT
'74 Suzuki GT750