If you’ve been following along, you know my Wrangler 4xe hasn’t had the smoothest few months. After the recent charging system error, the dealer performed two software updates. Charging has been reliable ever since — but the intermittent ECH cabin heating fault is still there, and now I’ve got a new, more serious issue to report. The Klausen Pass Incident I’d had eSave active for most of the drive, but switched it off just before the climb up the Klausenstrasse and selected full Electric mode to take on the mountain. Partway up, the vehicle suddenly lost power. I had to hit the hazard lights immediately, as the car behind me…