One option if you don't want the beep but still want the blinking light:Sometimes us knuckleheads know more than the manual. Like the option that turns off the beep when you plug in also turns off the blinking charge port. Manual doesn't know that!
Remove the fuse in the rear block that controls the pedestrian safety signal. The beep when plugging in will go away since I'm assuming its from the same horn/speaker that emits the static/warble sound.
I forget the fuse number (I'm at work) but it's in the rear fuse area under the floor, I used the fuse puller from the front fuse block and stored the spare fuse up there as well so I can put it back to stock in 30 seconds if I ever feel the need.