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Thread: Audi A6 C6 avant MMI not working

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  1. Re: Audi A6 C6 avant MMI not working 
    #11
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    Quote Originally Posted by flyby75 View Post
    Unfortenately the Audi specialist couldn't read anything out with VCDC
    Did the specialist do MOST loop test (look at VCDS link) with bridges in place? or just an "Autoscan" for fault codes?
     
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  2. Re: Audi A6 C6 avant MMI not working 
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    He tried a VCDS link with no bridges in place, and all equipment still connected.
    He told me that it was completely dead, even the diagnostic of the whole car....
    But I am not sure how much of an Audi specialist he is on this subject

    I have 2 loop bridges ordered with Audi, and they should come in tomorrow or so.
    When I am back in the country in a few days, I can do some better testing!
     
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  3. Re: Audi A6 C6 avant MMI not working 
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    Hello,

    Well I had time to have another look today.

    I bought 2 Audi optical loop connectors....

    -I put an optical loop connector between the BT phone ECU...still not working.
    -Next I put an other loop connector where the Bose amp was....MMI is working again
    So unfortenately the Bose amp is broken, but at least I know this now.

    I have someone looking at the amp to see if it can be fixed.
    Otherwise I have to find a second hand one.
    It' s a Bose 4F0 035 223 D.

    Can anyone perhaps tell me if I can buy an amp with a different last letter, or does it have to be "D" model?
    I know I have to get component protection off.

    Hope someone has experience with this?

    Thanks!
     
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  4. Re: Audi A6 C6 avant MMI not working 
    #14
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    Quote Originally Posted by flyby75 View Post
    It' s a Bose 4F0 035 223 D
    Below is list I can see where yours appears...

    4F0 035 223 A

    4F0 035 223 D

    4F0 035 223 F

    4F0 035 223 G

    They each have a VIN range associated with them... but when selecting 4F0 035 223 D it supersedes to 4F0 035 223 G ...

    You will need component protection removed when fitting the replacement AMP, regardless of new or used...

    Link:- Audi VW Volkswagen Skoda Seat Independent Specialist London

    Above garage is forum sponsor, close to you, can remove CP & code for you, charge vs Audi 1/2 the price...
    May also be able to advise on P/N compatibility... I'm only reading a screen as a meddling owner ...
     
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  5. Re: Audi A6 C6 avant MMI not working 
    #15
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    Thanks for the quick reply!
    I will contact him if mine is beyond repair...
     
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  6. Re: Audi A6 C6 avant MMI not working 
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    Hello,

    I just wanted to thank everybody for the help.
    It is all working again.
    I bought an amp from ebay with end letter G.( had a 4F0035223 "D" before)
    Build it in, and just had the component protection removed by Audi.
    nice to have some decent Bose sound again in the car!
     
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  7. Re: Audi A6 C6 avant MMI not working 
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    "Luv it when a plan comes together"
     
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  8. Re: Audi A6 C6 avant MMI not working 
    #18
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    I have the same issue with the A6 C6 Avant (2007) where water has leaked from the washer pipes onto the mmi unit. If I find a replacement radio unit, can I just swap it with the current one? Does anything need to be done to the car? Im struggling to find anyone who can help me with this!
     
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  9. Re: Audi A6 C6 avant MMI not working 
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    If the loop break doesn't work then try the loop break on more than one device. Other option is to disconnect all devices optic cables. I have 3 in the boot, one under carpet passenger side, CD changer and 2 behind glove box. Shine a torch down the cable and work your way round the loop. I did that to find a cable was damaged between the CD changer and bt module. I have the map written down at home so if you want more help then private message me.
     
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  10. Re: Audi A6 C6 avant MMI not working 
    #20
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    Is there any way to safeguard against this happening?

    Thanks

    Mike.
     
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