Audi MMI Not working. As useful as Audi MMI can be, it is not faultless. At times, Audi MMI can malfunction and stop working. The causes of MMI breaking down are varied and include amplifier, modules, or fuses malfunctioning. Knowing how to properly check on them as well as proper replacement is key to keeping our Audi MMI safe from serious Hello I haven't had a look further into mmi settings but I recently travelled through France Belgium Netherlands and Germany..When I left the ferry in Dunkerque the sound was gone.I thought no problem drive a few miles that you get out of port but unfortunately I did not get any sound in any of t I have an audi a6 avant 2005,mmi system has decided to stop working a while ago,I thought I had traced the fault back to the amplifier,as I got an optical loop connector to test all the units,when I bypass the amp,the system works normally,but obviously with no sound as amplifier not connected,however when I connect the old amplifier or a new wh A6 C6 3.0 Quattro le mans , was wondering any help my MMI stopped working 2 days after buying car screen lights up for about 40secs then turns of I have no fiber optic light going to nothing at the back of car and there dosnt seem to be any power at the control unit at the gear stick any help would be great. mmi not working By Chris F, November 28, 2020 in Audi A6 (C6) Forum Followers 0 Reply to this topic Start new topic Chris F Members 2 First Name: Chris Location: Swindon Audi Model:: A6 Avant Le Mans Audi Year: 2008 Posted November 28, 2020 Hi, All Audi A6 Models around the year 2006. MMI boots and then shuts off. Monitor goes on and then black. None of the MMI control works. Failed component in I'm havering trouble with my 06 a6 MMI it shuts off when the radio is on and loud an when I'm driving makes a clicking noise in the under the dashboard If you have vagcom, you can diagnose the problem. If you have sound, the problem can be the screen. If you dont have sound, the problem can be Gateway. If you dont give a code your new battery, it work but it is advisable code so that sistem knows that it has a new battety and what battery. The MMI is dead on my Audi a6 c6. I've done an optical bus diagnostic and this is what I get. Electrical Optical 19 Can Gateway OK ERROR 5F-Information OK OK 0E Media Player 1 OK OK 56 Radio ERROR ERROR Thanks in advance Step 1 - Check the fuse If your MMI doesn't start up at all, then it's probably not receiving power. The fuses that control many of the MMI modules are located in a compartment in the left side of your trunk. Pry open the side panel in the trunk and inspect the fuses. Use a multimeter to check the fuses and ensure one of them isn't burned out. Or3Kx.

audi a6 c6 mmi not working