Hello colleagues!

I have recently been in possession of an E65 730d NFL and for 3 weeks they are not able to solve their eternal problem with the sound and all the anomalies on the idrives (missing date, missing bc, etc)

I mention that it does not have Logic 7 and I changed the ASK mode, the ships mode, the cd changer, the phone mode also I mounted the bypass before each module to detect which does not work (without result), I also add as a signal on the fiber I have everywhere continuity .

Any idea how small is helpful to me !!

Thank you in advance.