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Discussion Starter · #1 · (Edited)
hello!

I have a 2009 sonata with navigation. Randomly a buzzing sound will come from behind the navigation unit. It actually sounds like a fan kicking on. When I turn off the radio (keeping the power to the display on) then the noise stops. Happens during idle, happens while in drive, happens with a/c on and with a/c off. Any thoughts? Thanks!!
 
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