2007 C6 A6 Sedan 3.2 CVT MMI Problem

2007 C6 A6 Sedan 3.2 CVT MMI Problem



I bought the car a couple months ago with the MMI completely dead. The car runs,drives, and looks great. A/C blows cold, everything but the MMI and trunk release switches work (key fob opens trunk so I dont care). The screen is completely dead and the control buttons do not light up. I scanned it with my VAGCOM 12.2.2 HEX CAN and did a Optical Bus test. Every single component showed electrical and optical ERROR. Deciding I did not feel like dealing with it I sent it to the only local Audi dealer. They had it for three weeks and said they couldnt figure it out.



Getting it back, I checked all the fuses three times and found the telematics fuse was blown. I found the bluetooth/tele module with corrosion all over it. I left the module unplugged, replaced the fuse, and did the optical test again. This time I found about 3/4 of the system showed "OK". I ordered a new module, went to plug it in and the fuse blew. I took the connector apart to find two wires in the larger of the two slides melted together. I replaced the larger portion in the 54 PIN electrical connector with a pig tail from a 2008 A6 , plugged in the replacement module, and replaced the fuse. Now I am at this point:

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 ERROR

07-Control Head(High/D3) OK OK

0E-Media Player 1 OK OK

77-Telephone OK ERROR

47-Sound System OK ERROR

56-Radio OK OK

37-Navigation ERROR ERROR





Chassis Type: 4F (4F0)

Scan: 01 02 03 05 07 08 09 0E 15 16 17 19 27 37 42 46 47 4E 4F 52

53 56 5E 61 62 65 72 77



VIN: WAUAH74F27N092968 Mileage: 160650km/99823miles



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: Cannot be reached 1100

08-Auto HVAC -- Status: Malfunction 0010

09-Cent. Elect. -- Status: Malfunction 0010

0E-Media Player 1 -- Status: Cannot be reached 1100

15-Airbags -- Status: OK 0000

16-Steering wheel -- Status: OK 0000

17-Instruments -- Status: OK 0000

19-CAN Gateway -- Status: Malfunction 0010

25-Immobilizer -- Status: OK 0000

27-Ctrl Head, Rear -- Status: Cannot be reached 1100

37-Navigation -- Status: Cannot be reached 1100

42-Door Elect, Driver -- Status: OK 0000

46-Central Conv. -- Status: OK 0000

47-Sound System -- Status: Cannot be reached 1100

4E-Ctrl Head RR -- Status: Cannot be reached 1100

4F-Centr. Electr. II -- Status: Malfunction 0010

52-Door Elect, Pass. -- Status: OK 0000

53-Parking Brake -- Status: OK 0000

56-Radio -- Status: Cannot be reached 1100

5E-Ctrl Head LR -- Status: Cannot be reached 1100

61-Battery Regul. -- Status: OK 0000

62-Door, Rear Left -- Status: OK 0000

65-Tire Pressure -- Status: OK 0000

72-Door, Rear Right -- Status: OK 0000

77-Telephone -- Status: Cannot be reached 1100



The MMI is still very dead and I am stumped as to where to go next. Although the modules electrically show "OK" other than the Navigation, the only module I can communicate with is the CAN Gateway. Basically, the only thing that changed after replacing the module was that the Telephone now shows "OK" electrically.:confused: