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bluetooth problem

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Old 06-06-2016, 03:20 AM
  #11
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Originally Posted by madeballer313 View Post
to be honest i dont even know where the mic is located at, i dont have the vag cable wire to check it
Originally Posted by madeballer313 View Post
i dont have a vag wire scaner cable to check for any codes
You should buy one. Key to any troubleshooting or DIY is the proper tools. Also a service manual would help. I have AllDataDIY (
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Old 06-06-2016, 08:16 AM
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Originally Posted by storka View Post
I think there are about three of them
There are three of them, but only one of them is for telephone/Bluetooth, the other two are for the sound system (Bose AudioPilot, I'm not sure about B&O).
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Old 06-06-2016, 09:30 AM
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Cheers















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Old 06-06-2016, 09:39 AM
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No phone diagnostics as far as I can tell, and we're talking about tearing modules out already??

Good luck with that.
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Old 06-06-2016, 04:25 PM
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thanks you're the man. I'll check it out whenever I get a chance. maybe it's a bad mic.

Originally Posted by Shamoye Lewis View Post
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Old 08-28-2017, 08:59 PM
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Today I found the cause of my no mic issue and wanted to post my experience here as it may help someone down the road.

I recently replaced my failed bluetooth module with a used one off eBay. The original one had definitely failed as it would not function at all with just an error message in MMI Tel menu and the Address 77 Telephone controller was inaccessible in VCDS (though it did maintain the optical MOST loop). I swapped out the bluetooth module under the driver footwell myself thanks how-to's in older posts on this forum. The new module showed up in VCDS, the MMI Tel menus worked, and I was able to pair my phone but eventually discovered no one could hear me when using the car bluetooth to make/receive calls.

VCDS showed Address 77 Telephone had no errors or faults, Address 09 Central Electronics had correct coding as pointed out earlier in this thread, and I tested with two different iPhones (6 Plus and 6S) with same no mic results.

Finally, after comparing the current Address 77 Telephone coding against my earliest VCDS scan, I remembered I changed the coding right after replacement module install. I looked at the coding and saw that "Voice Control Language" was set to "Voice Control OFF" (coding 0010900) instead of "English USA" so I changed it to 0010970 incorrectly assuming that's what it should be.

I figured the "Voice Control OFF" coding was from the car the used module was sourced from; it was not and I should have left it 0010900. Once I changed the coding back, the mic worked along with everything else.


TL;DR: If you have no bluetooth mic on US D3 using known good phones and Address 09 Central Electronics is coded correctly, make sure Address 77 Telephone coding is 0010900 and not 0010970.

Last edited by ModestW12; 08-29-2017 at 11:32 AM. Reason: spelling
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Old 08-29-2017, 10:48 AM
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Default I turned on my Q7 voice control inactive by doing 0010970

Originally Posted by ModestW12 View Post
Today I found the cause of my no mic issue and wanted to post my experience here as it may help someone down the road.

I recently replaced my failed bluetooth module with a used one off eBay. The original one had definitely failed as it would not function at all with just an error message in MMI Tel menu and the Address 77 Telephone controller was inaccessible in VCDS (though it did maintain the optical MOST loop). I swapped out the bluetooth module under the driver footwell myself thanks how-to's in older posts on this forum. The new module showed up in VCDS, the MMI Tel menus worked, and I was able to pair my phone but eventually discovered no one could hear me when using the car bluetooth to make/receive calls.

VCDS showed Address 77 Telephone had no errors or faults, Address 09 Central Electronics had correct coding as pointed out earlier in this thread, and I tested with two different iPhones (6 Plus and 6S) with same no mic results.

Finally, after comparing the current Address 77 Telephone coding against my earliest VCDS scan, I remembered I changed the coding right after replacement module install. I looked at the coding and saw that "Voice Control Language" was set to "Voice Control OFF" (coding 0010900) instead of "English USA" so I changed it to 0010970 incorrectly assuming that's what it should be.

I figured the "Voice Control OFF" coding was from the car the used module was sourced from; it was not and I should have left it 0010900. Once I changed the coding back, the mic worked along with everything else.


TL;DR: If you have no bluetooth mic on US D3 using know good phones and Address 09 Central Electronics coded correctly, make sure Address 77 Telephone coding is 0010900 and not 0010970.
The voice control on the steering doesn't work since my Q7 didn't have navigation option... Message was "inactive button". I'd changed from 0010900 to 0010970 and the steering button works... My phone's still working fine both voice and speakers. May be I should check.

Cheers,

Louis
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Old 08-29-2017, 11:29 AM
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Originally Posted by ltooz_a6_a8_q7 View Post
The voice control on the steering doesn't work since my Q7 didn't have navigation option... Message was "inactive button". I'd changed from 0010900 to 0010970 and the steering button works... My phone's still working fine both voice and speakers. May be I should check.

Cheers,

Louis
Yeah, it seems odd I have to code 77 Telephone to Voice Control Off in the W12. Last night, I coded it back to 0010970 one more time just to double check it wasn't a fluke and sure enough no mic again. Coded it back to 0010900 and once again mic works along with everything else including with the steering wheel voice control button. Maybe the 0010900 77 Telephone coding is idiosyncratic to D3's.

UPDATE: I found a thread on a UK A8 forum that gives reasoning for the counter intuitive 0010900 coding. That thread deals with loss of mic with bluetooth telephone module following the Euro 5570 MMI update but the same issue may have occurred with the latest or an earlier US MMI update.
From A8 Parts Forum
If you have voice control, then the microphone is connected to the Voice control module since it is possible to have voice control and no bluetooth.

You code the phone module without voice control because the voice control module is in effect controlling the infotainment (including the phone as it is part of the infotainment).

If you code the phone module for voice control, then the phone module will expect the microphone to be connected directly to itself, and it in turn would then handle the voice control. As a side effect, since voice control is now listening through the bluetooth module without a microphone, the whole thing stops working.

Perhaps in your Q7 the bluetooth and voice control systems without navigation are interconnected differently and therefore the 0010970 coding works in a Q7?

Last edited by ModestW12; 08-29-2017 at 02:31 PM. Reason: update with reason for odd coding
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