This issue in the Wall Street Journal today (paywalled though): https://www.wsj.com/business/autos/ford-confronts-strange-ear-piercing-static-in-f-150-trucks-7551ba24
I had a variation of this happen last Sunday. I've previously had the issue where it was so loud your teeth were rattling and nothing would stop it save pulling the amplifier fuse. On Sunday I had just made a turn against the recommendations of Waze and instead of the "calculating new route"...
I only had it happen once, and it was just after starting the truck. I do have wireless Carplay setup. About a week after that I finally got the 3.5.2 update (and now 3.5.3.2). The issue has not reoccurred. Not conclusive either way as I made it almost three months before it popped up.
I had my truck in today for this problem and specifically mentioned searching the tech line. The other advisor in the office immediately poopoo'd "the forums". I had video of the occurrence that I showed the service advisor. Of course they found nothing wrong.
The ticket indicates the tech...