My USB is not constant power, but I have a 2015. Don't know about the 16's.I thought the USB port in the console was constant power. I use the other power port/cigarette plug in the lower open part because I don't need a constant power source, worried I'll forget and drain the battery.
You're talking about the USB port next to the SD card reader or the power port in the lower front of the console?Odd. Mine shuts off with the truck. Annoys the wife because she's always charging her cell phone. Only reason I know, because I use a dumb phone and it only needs charging every 6-8 days.