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 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 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. 1 First Name: Farzad Location: Portsmouth Audi Model:: A6 3.0 DTI Audi Year: 2011 Posted February 23 I have A6 3.0 DTI Avante 2011. Last week I noticed for first time a message on my dash board.."Key weak battery". After that the MMI displayed started having mind of its own, coming on and off when it wanted. 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 r8N6Xx9.

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