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Another MMI Query

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October 28, 2025Oct 28

Hi all. I have AudiA4Avant 2.0TDleSETechnik Euro5.

The MMI is starting up and then going dark. I have looped the cable in the boot and all dash buttons and screen light up with the loop in. Nav works, heating etc. But anything audio related is down.

I was advised to put in a new unit in the boot which I ordered and did. But nothing has changed.

Desperately seeking advise on what else to test or what to do to get things working again.

Also checked fuses and they are all good.

Many thanks in advance.

October 28, 2025Oct 28

Have you had a diagnostic check to see if any fault codes flag up?

Could it be an issue with the amp?

October 28, 2025Oct 28

Author

No not been diagnosed. Im guessing that as I have disconected the amp unit and added a loop to the optic cable and everything works other than anything audio that it is amp related. But as said. I changed the amp unit for another and its still the same issues. 🤯

October 29, 2025Oct 29

Hmm I think you might need a diagnostic check to see if any fault codes flag up or get an auto electrician to take a look

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Another MMI Query

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Topics

C5 RS6 034 strut top mount

Are S5's notorious for not being serviced?

Help with some issues

Wing mirrors don't fold out when unlocking the car.

Park My A3 without having brakes on

A3 uncommanded engine shutdown

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Central locking

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