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      02-01-2022, 07:32 AM   #4
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Drives: BMW M850ix GC
Join Date: Jul 2021
Location: MI

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So it turns out that it is speed sensitive volume. I finally have a song I can reproduce it with consistently. When the volume starts to increase on its own, I can either turn the volume all the way down for a couple seconds and turn it back up to remove the distortion, or I can adjust the speed volume setting which brings the sound back to normal. There are no speed changes when this happens, so I'm guessing it's an amp issue.

What tells me it's an amp issue is that I've also noticed full bass at 0 to 25% volume but the bass dies and only the treble/mids increase after 25%. Reduce the volume back down and full bass again (or the treble is reduced enough that you can hear it again). Anyone see anything similar to the above? I have a dealer appointment tomorrow for other stuff so I'll add this to the list.
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