THX. Yes, I see now.
In the meantime I found some prints of the Xentry diag. It says the current "MB object number of hardware: 2229014201". Does it map to many different things ? Such as the A2189007206 perhaps? As well to sg as A212..... or A207.....
As for coding is it not an option to copy the config from the old (or the working right one) to the dismantled one with Star diag? Or to connect it to the car before attaching the lamp unit itself?
On the other hand, the problem is quite minor now: the left DRL (position light) has gone but all the rest is working nicely. Also, the Xentry found everything OK. So I am hesitant to have the front of the car taken apart and find if it is a fault of a LED bulb (with the entire unit is to change, but no programming I guess) or this control unit is to be replaced, or maybe both....