The incessant loud beeping when in reverse triggers my post-concussion syndrome and causes me to become dizzy and nauseous. As a matter of health and safety I need to at least lower the volume. I had hoped that Techstream would grant me some control over this, but I don’t see any relevant options under Customize Setting → Warning: Am I just looking in the wrong place?
That looks like the wrong sub-menu. I don't have full-time access to Techstream - here's how I did it. Dr. Prius & the 2021 Prime LE | PriusChat