My 2020 starting "singing" shortly after I purchased it. The car is off and randomly decides to make this high pitched squeal that sounds like it's trying to connect to a dial up modem. It will make that noise for hours on end.
Also, took it to the dealership to have them check for issues with the PCM. Mine wasn't apart of the recall but I'm having issues that correlates to the PCM.
Radio, backup camera issues, rough jerky shifting, spark knock from improper timing and other issues as...

2020 sounds like its connecting to a dial up modem