Jump to content
Do Not Sell My Personal Information

No Sound/audio After Bluetooth Module Retrofit


Recommended Posts

Hi all

New in the forum, and a happy reader for quite some time.

I have a Mondeo MK4, build date 13.10.2009, and I am trying to retrofit the original bluetooth. It is a Titanium with Convers+, Sony 6CD headunit and a AUX port in the glove box. The AUX wiring should go directly to the SONY radio through the QUADLOCK connector.

Convers+ FW: 1007
Sony 6CD HU FW: 05-06-01

The wiring for the BT module was already in the car from the factory, so I began to install it all.
I installed the original microphone, the new voice/indicator stalk by the steering wheel, and the module
- Note: Firstly I tried the 7S7T-19G488-AE module - also with no success, and actually wanted USB connectivity, so I bought another one.

Most of it works, I can connect the phone, browse the phonebook and so on, but I have no audio on calls. People can hear me, but no sound through the Speakers. Also no sound whenever I try VOICE. (VOICE is displayed on the SONY HU)

Any suggestions? I am really lost, I have checked the wiring, searched Google, and a lot of other sites, but still no resolution.

I did found this thread:


- Could it be related?

Or is it the existing wiring which needs modification or something like that?


Link to comment
Share on other sites


I have the 8G9T-14N000-CB patch cable, which is for a car without BT connection. The 8G9T-14N000-AB cable or similar is for cars with an active BT connection.

I think that is where the problem is at .. But if someone could confirm this, that would be great!

Found this list on a polish site:

8G9T-14N000-DB - From: 01-09-2008 To: 23-01-2009 No call ± bluetooth connection, ICE-Naw. bogat.opc. CD + AM / FM Radio
8G9T-14N000-AB - From: 01-09-2008 To: 07-02-2011 bluetooth / st.g³. + Info + Nav., Wyp.podst.CD + AM / FM Radio
8G9T-14N000-BC - From: 07-02-2011 bluetooth / st.g³. + Info + Nav., ICE-Naw. bogat.opc. CD + AM / FM Radio
8G9T-14N000-BB - From: 01-09-2008 To: 07-02-2011 Interf.tel.BT/VC + USB, ICE-Naw. bogat.opc. CD + AM / FM Radio
8G9T-14N000-CB - From: 01-09-2008 To: 07-02-2011 No call ± Bluetooth connection, rich version CDX6 + AM / FM & DAB
Link to comment
Share on other sites

  • 2 weeks later...
  • 5 years later...
On 4/8/2015 at 4:16 PM, C.M said:

8G9T-14N000-AB cable/patch loom now installed, and now everything works like it should.

Hi. I know this is from forever ago but I’m having trouble with bt modules. How many wires does your patch have? Is it the 2 loops or more?

hopefully you can still remember. 
thank you. 

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.


  • Create New...