Since these are the pre-facelift ECMs perhaps a used ECM from a manual B5244t(same partnumber and hopefully software updates so that the CAN matrix is the same). Then it needs an immo clone and you will be set.

Try xanthefin as well, seems to be quite knowledgeable about such things.

ME7 has multiple versions yes. Three IMMO software versions alone in ME7 and yours is the old one as its C70 ( up to 2004/5 years ) model using the IMMO3 module and other old tech ( like 900 and 90 series did push longer with older tech when other models did move newer tech ). I have in mail coming ...

I am no master, but rkam is. I have only managed to reverse engineer some parts of the Denso software(though his is ME7 which I have no experience with). And even with all experience I have, I am still learning from rkam from things he has said in the very past which I understand only now. My observ...