Hello in the workshop we had a problem with this car, a vw passat 200 tdi 170cv with control unit siemens , as you can see in the photo attached ? burned out the power module inside. Now in the dealership you know very well what to ask of a new ecu, the ecu goes into diagnosis quietly but not part of, I found a the breakdown, now I ask since I've never done it, just read and write in bdm the entire backup from one to the other in addition to the exchange of the two chips of the code? or should I do another ?
Qulacuno has experiences on this kind of work ?