Hey Prius peeps, I have an ‘08 with 180k on the clock. Recently I noticed a strange crackling noise under my dash, it happens all the time. it’s not metallic or two surfaces rubbing, it actually sounds like some sort of process that is struggling to complete but just can’t. I had an ‘05 and it didn’t do this.
There is a zipped webm video attached to this older post here. If you download, unzip, and play that video, does it sound like the sound you are hearing?