MMI stopped working

[BillP]

Hi there,
I recently bought my first Audi. An 07 A6 Avant.
My entire MMI system seems to have stopped working.
I had it in at a garage (not Audi dealer) for new brake pads and front discs.
They apparently switched the radio, and MMI, off so as not to run battery down. When I collected the car and drove it home I couldn't manage to switch it on again. When I press the on/off button or any of the function buttons the MMI "start up" image briefly comes up and then fades away after about 5 to 10 secs. The function buttons also briefly illuminate for about 2 or 3 secs but its very faint.
I have tried to re-boot using the SETUP + Centre rotary Knob + top right control button but this only gives the same result as the on/off switch.

Anyone got any ideas about what has happened or how to fix this?

Thanks

Bill

[kite]

try disconnecting the car battery for 10mins to force a re-set.

[BillP]

Thanks, I'll try that and report back.

[BillP]

We disconnected the battery for 30 mins this afternoon.
Unfortunately, it did not fix the problem.
Don't know what to try now - apart from taking it to main Audi dealer...!

[kite]

Look for a member in your area in the vagcom section and have the car scanned for faults.

[BillP]

Hi again. Took the A6 to Audi Dealer. They said:
"Radio Amplifier defective - requires new part!"
"Sat nav unit defective - requires new part"
"Phone ECU defective - requires new part."
Total cost £2,000+ !!!
They claim that the Amp has been damaged from water leaking from Rear Wash/Wipe pipe. The Rear Jet nozzle is partly blocked. They also want over £200 to replace nozzle and pipe!
I'm not happy.
I've heard about the rear wash nozzle becoming blocked offten on Avant models. Sounds like a design fault to me. I'm not willing to pay +£2K for water damage to electrical items on a 3 and 1/2 year old car because the rear Washer Nozzle became blocked. Is that really what we are to expect from Audi/German quality engineering???

Bill

[kite]

have a word with craig @ http://www.tclsatnav.com/

Or send A8tech a PM.

[GeeJayTW]

Hi - i joined the forum today as the same thing has happened to me - the car was in my garage for brakes and now the MMI switches on for 20 secs and then switches off again - will try the disconnect battery to get the reset dont want to take it in for Audi diagnostics....-

[kevin rose]

I have same problem. Garage has told me I have to replace the control unit - apparently located behind glove box. Cost is astounding. Am looking to get part through salvage.