Has anyone heard of this? Bought a 2019 Sahara new in May (so very low mileage). Today my wife was on the highway and lost all power. There was nothing, nada couldn’t even turn on the hazards. It was 100% dead. Had to tow to the dealer. They haven't looked at it yet. I tried putting a jumper battery on it and still nothing. Only other symptom is when I came to get her think I heard a humming under the hood. I can’t be sure since we were on a noisy highway.