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 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: |
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