Audi A6 C6 avant MMI not working

[neilos100]

The day the music died
Have a quick look here.....same thing happened to me....it's not pretty but I opened up a plastic bottle and using the bolts for the mmi unit screwed it over so any water will be diverted by the plastic cover...I also glued the corner joint in the washer pipe so it won't open up again.
Neil

[Andrew8999]

I have an 2015 Audi A6 3.0T. Few weeks ago it was flooded with water on the floor now the left trunk lid brake light won’t work. Also, radio module has no power and Pcv regulator valve is not working. I’m think it’s all linked together but can’t figure out which wire or ground is bad.
Following codes are:
01516 - Terminal 30 Left - open circuit
02901 - left brake lamp/turn signal/ tail lamp bulb 2 - electrical fault

Can anyone tell me if it’s fuse or wire/ground that could be the culprit here?

Update: I found the radio module 7.5 amp fuse was blown and I replaced it and immediately blew again.

Thanks