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Upgrades (non TDI Engine related) The place of handling, lighting and other upgrades that do not relate to the performance or economy of the TDI engine. In other words upgrades to your TDI that don't fit into TDI Fuel Economy & TDI Engine Enhancements.Please note the Performance Disclaimer

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Old June 21st, 2012, 08:58   #1
Join Date: Mar 2012
Location: Berkeley, CA
TDI(s): '21 Golf TDI
Question Installing a noise-cancelling mic in Golf TDI

Hey TDIClub peeps,
I've got a '12 Golf TDI, and unfortunately experience a lot of complaints about noise when I use my car's bluetooth phone connection. I know this is a common issue, but I'm sick of it and am trying to fix it.
Some people have gone into the firmware of the car to manually increase the microphone volume, but I'm convinced that still wouldn't solve the main issue: ambient road noise coming through the mic.
From my research, it seems a higher-end bluetooth set up on late model Jettas comes equipped with two mics: one regular mic and one mic to cancel background noise (I think the radio with the '7' part no. prefix is the dual mic, as opposed to the '2' and '3' versions).
Here's my question: Has anyone on this forum attempted to yank (or buy) a Jetta dual mic system and install it into a Golf TDI?
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Old June 21st, 2012, 15:35   #2
Fixmy59bug's Avatar
Join Date: Aug 2009
Location: Henderson, NV
Fuel Economy: Check my Fuelly Tag for most up-to-date numbers

I don't recall the radios ever ending in 2, 3 or 7. I think you may be talking about the PR codes for the bluetooth modules (Being 9W2, 9W3, and 9W7).

Although the module has nothing to do with the microphone that is used in the car.

Further, I have never heard of a dual mic system. I have checked ALL of the late model cars in ETKA (Vw's Electronic Parts Catalog) and vw uses the same mic for all bluetooth systems.

Sorry I couldn't be more help.
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Old June 21st, 2012, 16:05   #3
Join Date: Mar 2012
Location: Berkeley, CA
TDI(s): '21 Golf TDI

Hey Robert,

You're right, I guess the correct term is the BT modules ending in '7'. Is it fair to say the module is usually part of a audio/video package on a car, which the dual mic might be a part of?

The thread that I got the '7' lead from is here, for what it's worth:

"I have had this problem from the get-go, with the BT. I joined this forum specifically because I saw Muggsy77's post, and was amazed that so many others have not had the same problem,since it appears to be kind of endemic on various VW forums. A couple of the TDI forums, in particular, have extensive discussions on this topic.

Briefly, my experience has been that outgoing audio intelligibility (from the car) is tolerable if and only if the car is traveling at or below about 30 mph, no windows are open, and the blower is either off or on the lowest setting. If any of these conditions is changed for the "noisier," outgoing audio intelligibility deteriorates very rapidly to actually zero, where I have to drop the BT, and use the phone directly. I've used this under all signal levels, and with two different phones, including an iPhone and an older LG VX8300. Identical symptoms. I don't have the Nav system. There are apparently three versions of the audio/nav/BT interface (I don't recall the p/n prefix, but the versions are 2, 3, and 7). I have the 2 version, I believe. The 7 version (which has the super-zapola MFD, etc) contains the dual-microphone active noise-canceling audio chain, so it's something that VW seems to know about. I agree with the poster who asked to have the mike on the driver's side, for a nice change. I actually go hoarse from trying to shout, at times. It's not the phone or signal atrength, because even voice-dialing is a real challenge, and that's just car-to-phone BT, not involving external signal levels.

I'm with you, Muggsy -- there's something odd going on. I suspect that VW may have switched microphone suppliers in mid-stream, and is reluctant to own up to it, given the recall/retrofit implication. The noise is definitely road noise, as if there is inadequate acoustic isolation of the mike. It's real, and it's a major showstopper for reliable phone use with the car's BT." - Guy with a 2010 Jetta
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Old June 5th, 2013, 12:56   #4
Join Date: Mar 2012
Location: Berkeley, CA
TDI(s): '21 Golf TDI

any other thoughts?
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Old June 5th, 2013, 13:49   #5
Yvettes Sherpa
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Join Date: Apr 2013
Location: Winchester CA

I have a 2013 Golf and have no problems with my BT. I do have the nav so I'm not sure if that changes anything. The first time I called my wife she didn't know I was in my car.
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Old June 9th, 2013, 12:46   #6
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Join Date: Sep 2012
Location: Williamsburg, VA

I heard of people moving the mic and adding padding of sorts to it to help decouple it from the vibrating panels. I'll probably use duct seal when I pull it apart.
Car stereo log: Jetta Hybrid w/ GB10, GB25, GB60, GB10D4 -- AudioFrog
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