Re: A6 C6 AVANT MMI Dead –
20-01-2021,10:03 PM
Originally Posted by
E6kbt
Hi I have a 2011 audi a6 avant. Its the last model of the c6 with mmi 3g high hdd. The car was bought from an auction and the mmi is completely dead. The screen doesn't power on and there is no lights on the control buttons.
I've had a long search around this forum and checked all the post with similar issues. It has come to my attention that the car is fitted from factory with the 7T6 SATNAV unit but it is missing from the glove box. My concern is! Does the car need that satnav unit to power the whole mmi system? I have since bought a loop kit and looped the optical system from the missing unit. But still nothing. Im wondering if the mmi unit in the boot is the problem or the satnav is part of the system to function properly.
There is red light flashing at the missing satnav optical wiring so looped it there. But at the boot module there is no light in the optical wire. Should there be a red light in the wire at the boot or does the feed start from the module in the boot to the from of the car?
There is a 6 dics changer in the glove box and that has power and functions. There is no screen no sound or no lights on the gear stick control buttons. The boot module is 4G0 code.
The only fault showing on diagnostic is can bus open circuit mmi. No other faults.
Any help on if the satnav unit is needed or can be looped out would be much appreciated before I spend a lot of money on the boot module藍
Thanks
Alec
Hi,
The unit in the glovebox on your car should be the main MMI (5f) unit - it has twin SD card slots, a DVD drive, and contains the hard drive used for nav, media etc. Without this you've effectively got no MMI. You could probably get a replacement, but I'm pretty sure they come with Component Protection, so you'll need to get this removed.
Cheers!
MF.
Gone: 2016 A6 Saloon BE Ultra S tronic - Floret Silver, Tech Pack Advanced, Parking Pack Advanced, Heated F+R Seats & Wheel, Electric Seats, Matrix LED, Ambient Lighting, Speed Limit Display, Twin Spoke 20", Folding Memory Mirrors
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