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 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. 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. Two simple things to check depending on how long you've owned it, try holding down the power/volume **** a little longer and second the button over the glove compartment release turns off the display, it may have gotten pressed by accident. 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. lj8qCmu.

audi a6 c6 mmi not working