Telephone module issue with S6

[unstable]

Hi All,

New to the forum but have been reading some posts about issues with Bluetooth modules. I have a 2007 S6 and had it in with an independent garage on Monday to have brake shoes replaced. Since then the Radio has been cutting out every 2 minutes or so for about 3 seconds, then it comes back on. I can't connect my phone to bluetooth anymore and the voice functions don't work. If I set the BT pin, then the radio cuts out, the pin resets to 0000.

I don't know why this happened after it was in the garage, maybe just a big coincidence.

I bought a VCDS and did some scans, here are the results:

-------------------------------------------------------------------------------
00-Steering Angle Sensor -- Status: OK 0000
01-Engine -- Status: OK 0000
02-Auto Trans -- Status: OK 0000
03-ABS Brakes -- Status: OK 0000
05-Acc/Start Auth. -- Status: OK 0000
07-Control Head -- Status: OK 0000
08-Auto HVAC -- Status: OK 0000
09-Cent. Elect. -- Status: OK 0000
0E-Media Player 1 -- Status: OK 0000
0F-Digital Radio -- Status: OK 0000
11-Engine II -- Status: OK 0000
31-Engine other -- Status: OK 0000
15-Airbags -- Status: OK 0000
16-Steering wheel -- Status: OK 0000
17-Instruments -- Status: OK 0000
19-CAN Gateway -- Status: OK 0000
25-Immobilizer -- Status: OK 0000
36-Seat Mem. Drvr -- Status: OK 0000
37-Navigation -- Status: OK 0000
42-Door Elect, Driver -- Status: OK 0000
46-Central Conv. -- Status: OK 0000
47-Sound System -- Status: OK 0000
4F-Centr. Electr. II -- Status: OK 0000
52-Door Elect, Pass. -- Status: OK 0000
53-Parking Brake -- Status: OK 0000
55-Xenon Range -- Status: OK 0000
56-Radio -- Status: OK 0000
57-TV Tuner -- Status: OK 0000
61-Battery Regul. -- Status: OK 0000
62-Door, Rear Left -- Status: OK 0000
72-Door, Rear Right -- Status: OK 0000
76-Park Assist -- Status: OK 0000
77-Telephone -- Status: OK 0000

--- CLIP

Address 77: Telephone        Labels: 4E0-910-336.lbl
   Part No SW: 4E0 910 336 H    HW: 4E0 862 335 
   Component: Handyvorb2      H13 0700  
   Revision: 00000000    Serial number: 00000007537134
   Coding: 0010920
   Shop #: WSC 02335 785 00200
   VCID: 2757CC07966A4A2040F

No fault code found.

-- CLIP
                Address 77: Telephone  (4E0 910 336 H)

17:41:58
         1   Diagnostic Wire 
  Main Antenna   Main Antenna 
  Not Possible   Main Antenna Status
  <> 00000007537134 <>   Serial Number 
Friday,28,September,2012,17:46:38:34654
VCDS Version: Release 11.11.4 (x64)
Data version: 20120807


Control Module Part Number: 4E0 910 336 H
  Component and/or Version: Handyvorb2      H13 0700

Optical Bus Diagnostic : Standard

Controller              Electrical              Optical             
19-CAN Gateway          OK                      OK                  
07-Control Head(High/D3)    OK                      OK                  
0E-Media Player 1       OK                      OK                  
77-Telephone            ERROR                   ERROR               
47-Sound System         OK                      OK                  
56-Radio                OK                      OK                  
57-TV Tuner             OK                      OK                  
37-Navigation           OK                      OK                  
0F-Digital Radio(DAB)    OK                      OK                  

************************************************************

It looks like an intermittent fault on the BT module. There is no dampness in the passenger footwell. If I am in module 77 in VCDS and the radio cuts out I loose comms with the module, but can then go straight back in.
I have the car booked in with the dealer on Wednesday but don't fancy paying a fortune if I can sort this myself. Is there any way with VCDS to reset/reboot the BT module to see if that helps? Or does it look like I need a new one?

Thank you very much in advance.

[ukandyb]

Hi,

Welcome to S6 ownership!

I had exactly the same issue, to confirm a dying BT module you need to run an optical scan.

Search on "Avant tailgate and MMI issues - connected?" I had lots of help to sort it out.

Shout if anything is not clear.

Best of luck,

AndyB

[unstable]

Hi ukandyb,

Thanks for the replay.

I did an optical scan and it comes up with an error on the telephone. I've ordered a MOST bridge adapter so will take the BT module out and see if that sorts the issues, I can live without phone support but the cutting out of the radio is extremely annoying and I have to drive to germany on Saturday :|

Here is the optical scan report :

--------------------------------------------------------------------------------


Control Module Part Number: 4F0 910 468 A
  Component and/or Version: Gateway         H11 0070

Optical Bus Diagnostic : Standard

Controller              Electrical              Optical             
19-CAN Gateway          OK                      OK                  
07-Control Head(High/D3)    OK                      OK                  
0E-Media Player 1       OK                      OK                  
77-Telephone            ERROR                   ERROR               
47-Sound System         OK                      OK                  
56-Radio                OK                      OK                  
57-TV Tuner             OK                      OK                  
37-Navigation           OK                      OK                  
0F-Digital Radio(DAB)    OK                      OK                  

************************************************************

Thanks.

[ukandyb]

Hi,

Did not see you had already done an Optical Scan, was looking on the iPad...

Anyway, it does look like a dead BT module and a MOST bridge adaptor should sort you out in the short term.

I did do a step by step on how I changed my BT module, all I can say is that the trim was a sod to get out and put back - just take your time and have something soft to stand your seat on.

When you get round to replacing the BT the difference between an eBay unit and one from Audi was not great enough for me to forego a warranty so I went to Audi. Stafford Audi were great in arranging an exchange unit and credited my card back the same day they received the faulty unit back from me.

Cheers and good luck.

AndyB

[unstable]

I called Audi today and they want ~£300 for a new BT unit, that's with PXing my old one. With it being intermittent I'm wondering if it will be possible to fix. When I get it out i'm going to test the power lines to make sure that isn't the issue, if it is the module then does anyone know someone who might be able to repair them?

Cheers all.

[Guest 2]

I called Audi today and they want ~£300 for a new BT unit, that's with PXing my old one. With it being intermittent I'm wondering if it will be possible to fix. When I get it out i'm going to test the power lines to make sure that isn't the issue, if it is the module then does anyone know someone who might be able to repair them?

Cheers all.

You can buy the whole retrofit kit new for £229 ..... how does that work

Audi Bluetooth Interface MMI 2G - A4 A5 A6 A8 Q7 RETROFIT INSTALL KIT NEW !!! | eBay

[unstable]

Thanks all for your advise. To give you an update, I took this afternoon off work and came home via screwfix (to get a socket set that included a M10 Spline) and via an Audi dealer to get the Optical bridge. I had full intentions of removing the seat and taking out the BT module. I did notice that the MMI didn't cut out at all on the way home. I hooked up VCDS and did a Optical Bus scan and everything came back clear. My phone also saw the BT module and I could pair them and make calls...

So now I'm really confused... It's as if the car knew I was going to rip a bit out and it's all decided to work again.

I'm going to see how it goes and hope the symptoms don't re-occur on the way to Germany. I also now have an optical bridge, socket set and VCDS cable that I didn't really need to use.