Iv done some searching and more confused now than when I started looking I want cornering fogs, emergency brake lights and wiper wipe on opening so I believe i need a newer cecm. I have a 3 door 2007 ED30 and I think the part number is 3C8937049E but unsure. Could anyone confirm this will do what I want please?
The part number you quoted is listed for Touran in ETKA (not sure why other may know) it has changed as follows :-3C893049E to F - S - AB - now currently AC (just the last digit changes)
Now if the number you quoted is correct then you've got a 30 byte CECM
As for why it won't code, again others may know, hope this help but this area is a mind field!