ECU interchangeability
#1
#2
Here's the challenge. You can't even replace the instrument cluster without having to program it to the computer so the same would be true if you replace the ECU. A few independents can do it for you, but most of the time you have to go to a dealer. Other than the IC I'm not sure what other parts require programing.
#3
#5
#7
Can you please interpret your use of the word "Berline"? I assume that you are using this to mean "sedan" ... because there was no X-Type model named Berline - and every X-Type has diagnostics through the OBDII port...which model are you actually referring to?