I've installed a Sony XAV-1500 to my 2011 A3 S-Line with Bose speakers and everything was working great until I started the ignition, the main speakers all work but there's an intermittent high pitch whine from the two (are they tweeters?) small speakers next to the door handles in the rear. Its only present when the ignition is on which makes me think its a grounding issue? I'm unsure how its fine with the OG head unit and not this one though?
The whine is maybe every 20 seconds? Lasts about 6 seconds or so and then stops. Anyone dealt with anything similar?
The whine is maybe every 20 seconds? Lasts about 6 seconds or so and then stops. Anyone dealt with anything similar?