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2008 A8 MMI don't work

  #1  
Old 09-27-2015, 12:18 AM
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Default 2008 A8 MMI don't work

Any idea how to get this working? The MMI on the 2008 A8 stopped working after the radio radio made a crackling noise. It suddenly stopped working for a while in the past and an electrician replaced the tuner in the trunk. It worked for 3 weeks and now dead again. It boots and initialize then goes black and cause a clock ticking sound coming from the rear passenger side speaker area. Any ideas?
 
  #2  
Old 09-27-2015, 10:14 AM
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You need a VCDS scan, but sounds like a break in the MOST bus fibre optic ring is a possibility or a fatal fault in one of the devices on the ring (which will break the ring)
 
  #3  
Old 09-27-2015, 05:50 PM
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Thanks! Whats the most reasonable VCDS scan tool out there? Can the tool isolate the cables or just send me in a rat nest?
 
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