[kafkaesk]

Hey folks!

A friend of mine has a problem with his Audi A4 B8 and his MMI 3GP.
He had a water ingress in his rear trunk on the left side that damaged his Radio Unit (Part# 4G1 035 053E).
Because of that, the MMI still worked but he had no audio output.

Therefore he bought a used, working Radio Unit with the same part number and went to the local Audi dealer to remove the component protection, but they didn't succeed in getting the audio back working.
They then simply told him: "Well, we can look for the fault but this might take a very long time and will be also very expensive, because there might be something wrong at the backside of the MMI" (I have no clue what they might mean?!).


Maybe some more data I got out of the MMI itself or the Red Engineering Menu:
Media version: HN+_EU_AU3G_P0530
Navigation database version: 8R0060884AH ECE 5.13.8
MOST Version: AU3G
MU Software: 0524
Text tool version: HMI_8.04-1_Cl_2.93-1

Do you guys have any idea what the problem might be, provided that the Audi dealer programmed everything correctly?

Greetings, Daniel.