Hello I exchanged my battery and now the radio is asking for a code. My car is an Alfa GT, year 2007.I am the second owner and the previous owner did not give me the code card for radio. Radio : Blaukpunt GMBH BP 7646357316 Fiat nr 1560745590. In the user's manual, it is written that the code is composed of 4 digits between 1 to 6. Thank you for your help