A6 / S6 (C6 Platform) Discussion - MMI and other TSB downloads - Thanks to Kevin Gary for some of these. I made a new thread to clear out the clutter. Any questions, email me or ask me in another thread to keep this one as clean as possible. Use the 'tt' link on the right to be notified of updates everything was working fine on my 2012 A5 (facelift model), then the mmi control unit started randomly stopping working. Then after a few weeks it stopped working altogether. However, everything else in the car works radio, Bluetooth, navigation etc but I can only control them with the steering wheel controls or voice command (not the best with FI: Mmi not working, a6 c6 A6 / S6 (C6 Platform) Discussion Discussion forum for the C6 Audi A6 produced from 2004-present and Audi S6 produced from 2007 - 2011 Community Links Points. 1. Jan 15, 2016. #14. elan2s said: By going with Nav Plus you get a larger MMI screen and the touch pad on the central console. The navigations system also is stored on a hard disk drive rather than using an SD card and this allows 3D imaging and also images of major landmarks displayed on the MMI screen when showing the map. Component Protection - 02084 & 02095. I've read many threads about this somewhat common "problem" but still can't seem to grasp exactly what's going on with my audio. Perhaps the knowledgeable can expound on this. Car: 2006 A6 C6 Avant Quattro. Symptom: The stereo only comes out of the left channel - no right channel or bass. In order to replace it, follow the steps: Step 1: On the back of the key press the button (marked A) and at the same time pull the key blade out of the fob. Step 2: On the front side of the key press the button (markerd arrow and B) and at the same time pull battery. Step 3: You’ll now see the battery. Received 7 Likes on 7 Posts. 2005 Audi A6 MOST bus/mmi diagnostics and repair. Rear trunk radio equipment picture. Hi guys, I dont post often but follow the forums pretty close. I recently acquired a low mile 2005 a6 quattro but it had many issues. Most of them wiring related. Yes the car has the phone module in the arm rest and bose, all the right side buttons are lit up, but the left side are not. Also the center buttons around the center knob wont work. Cant change settings. I have tried the reboot, pressing setup, center knob and top right button it reboots and still same thing. Quoted. 81 Post (s) Re: MMI control knob broken – 30-08-2017, 02:48 PM. Hi All Well the knob has started to stick down at 3-4 points on its rotation. Into the dealer and is being replaced with a whole new panel under warranty ( Nov 2015 reg) Looking on line it appears to be around the £400 price mark !!! CD1 will update MMI to 5.1.50 (which is the version needed to update to 5.5.70) CD2 will update the Bluetooth module (need to be run twice) CD3 will after MMI has version 5.1.50 update MMI to 5.5.70. and just for the record these CD's are only for the non-NA market. The newest US (or North America) MMI version is 4.6.10. N8Q5x.