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You could be right but not sure..the MMI just intermittently shuts down and restart by itself. I cleared previous errors memory in autoscan but still no go.. I just dont know where to start troubleshooting. Would lack of vehicle use cause such problems, you know?

Thank you!

Thanks but i have been on this forum for years but you know....hmm code wrap? how is that done? English as a second language so help me out bro

Hi Folks, The MMI sometimes shuts down and rolls back into dashboard slot but comes up again when you push the power button. Has anybody seen this as a common problem on Q7 or so? I just dont know where to start but tool full autoscan and cleared any recorded faults. Also address CF-Lane Chge...

Oh BTW if such RCD radio unit can be refurbished or repaired, which sources can help with that Dr? Any leads??

Yeah so this inquiry can be closed now..Thanks Dr. Sheldon for taking time to write.

Dr. Sheldon- Thanks I went ahead and did further troubleshooting- T16b/15 and 16 on radio all have 12V present. Ground is present at T16b/12 too, further the bus lines running from T16b/9 and 10 have all continuity and no shorts to J533 pins T20/20 and 10. I then went ahead to install some...

Please post scan results and some MVBs if any for better help..im up tonight looking for something to do so ..i can help -:)

Hi I can see you are relatively new here. This forum uses diagnosis scan results to help out a lot, real time good ideas members provide but I dont see one from you. Can you provide such scan results for better assistance?

Radio suddenly stopped working..all fuses including one behind radio checks out ok. Power supply and ground all present. Gateway and Telephone both reports No communication from radio unit. Is there a repair solution than replacement of radio unit? Any helpful economic ideas/inputs appreciated...

The fuses inside the car, you need to test all of them and make sure they are tight fit..did you post your electrical and optical test results?

I would say test the vap purge solenoid valve N80 for leaks..or is possible replace it and recheck. At almost 140000 km its possible this valve isnt holding well.

Thats correct but one more thing: with the bypass loop in place try and take readings at each stage and post them here so members can have a complete picture of car situation for some helpful inputs.

Alright so would the interface upgrade also fix the service reset issue raised earlier?

Meaning what? My current interface is of no use now or expiredon newer vehicles or just the AUDIs?

My VCDS doesnt seem to "talk" to all systems on my AUDI. The message unsupported vehicle please upgrade to current interface appears on the screen during autoscan. I also did oil change and in doing the service reset the message " No Label File for this ECU: 4M0 920 890 D, please make sure you...

Hi Thanks for posting. I know the address 47 is mostly the culprit of such "terrible crimes" on this fine German engineered luxury car but lets do some loop test/basics first. All fuses ok? Then you may probably need this adapter part # 4E) 973 802 bypass unit for additional tests.

Ok in this case lets start from the basics first: Do you have fuel delivery from tank to engine present? As you may know this car has also what we call CI engine meaning it needs air, fuel and good compression to start. If fuel delivery is present, try moving the throttle flap/valve to see if it...

Hi Yeah there may be no codes but you still have to post scanned results (AUTOScan) so members can try to assist better as it gives better picture of the car's scenario

This car has EPC light on, car still drive ok but no turbo effect. Boost pressure performance doesnt seem exist/lost. I got 12V supply present on the boost pressure control sensor, I also went ahead and replaced the sensor but still EPC fault relating to the sensor is recorded in ECM. Is there...