The numbers printed on the rcm boards have not been "noticed" or "logged", but when I got my car and found this forum, that was one of the first things I checked. I noted mine was stamped with an 07 series number and the one in the rcm thread has an 04. Mine looked great upon inspection. I later found a link to look up your vin for service history and noted that in 07 or 08 mine had a service for "electrical". I'm really thinking mine had been replaced with an updated "correctly soldered" module. Mercede's did a recall on their cars over them, so that alone tells me the problem was addressed and corrected on these boards. You still have your old one? And if so what is the stamped number end with.. 05?