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sounds system "overheating"

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1 reply to this topic

#1 OFFLINE   VerbalK


    New Member

  • C-MAX Hybrid Member
  • 10 posts
  • Region:U.S. Northeast
  • LocationBaltimore
  • My C-MAX's Year:2013
  • Current Vehicle:2013 C-MAX Hybrid SE

Posted 08 July 2016 - 12:31 PM

So I read all the info about pulling jumpers and resetting system for audio problems, usually when the audio won't turn off...  but I've had an intermittent problem with the audio not turning on.  I've determined the issue is when I park in full sun at work.  Temp usually has to be in the 90s.  Until the car interior cools down (usually about 10-15 minutes for full A/C), then stop/start the engine, the radio and sound system (including bluetooth) won't operate.  It will turn on for a moment, then snap off before any sound is initiated.


I'm guessing this is some bit of circuitry that defaults off when over a certain temp.  Anybody have any thoughts.  I could always buy a sunshade, assuming the issue is somewhere in the dash area.

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    C-Max Hybrid Member

  • C-MAX Hybrid Member
  • 339 posts
  • Region:U.S. Great Lakes
  • LocationDetroit Area
  • My C-MAX's Year:Decline
  • Current Vehicle:2013 C-MAX Hybrid SEL

Posted 13 July 2016 - 05:43 PM

Had an ongoing issue much the same, dealer replaced Audio Unit, lasted about 10,000 miles and failed again in cooler autumn weather.  Second replacement has lasted over 20,000 miles so far.

Work order reads:

18805E  Audio Unit  -  Replace

(18806/18C815/18C869/18K931)  -  L

As a bonus, I found a sheet metal screw in the console.

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