The MMI in my '55 plate A6 4.2 keeps constantly rebooting, even when the
car is switched off and locked. I have to disconnect the battery to
stop it discharging overnight. I have tried the three button reboot and
holding the mute button down for ages but it just boots up again then
turns itself off and then reboots constantly. Help please, it's driving
me nuts...... When it latches on, all the components seem to be working fine but then it turns itself off and reboots again... grrrr

 

 

see pic: MMI booting and no key in the ignition........

Hi I've just joined and bought 08 s line avant. This happened to me the other day. Hope this doesn't seem to easy but a couple of my buttons didn't seem to be returning as others and wandered if they are just a little sticky and mmi doesn't like it.

Maybe some gentle freeing agent. What sort I don't know as you don't want to make it worse I'm sure there is a switch cleaner if this is the prob. Regards

Thanks for the reply - I have had it in the garage and the switches seem ok. Also replaced the amp with one from e-bay and it still had the same problem :(

I've now pulled the fuses so it stops discharging the battery but it's still not fixed and I haven't got enough dosh to take it back to Audi..........

Mm technology's great till it go's wrong

Sorry just a simple thought