I think the PTC heater simply uses more juice to warm up initially and then only draws what it needs to stay hot. That's how resistance heaters work, afaik.
I have a catastrophic failure of my heater system too. In fact, I have seen two... one is my personal vehicle and one is a company car.
On mine, the heater pump (coolant fluid/heat pump compressor motor) quit, and after paying $1400 to have it replaced, it still doesn't work because...
I can't see any new data in my CARWINGS account since late November either. I recently installed an Efergy energy monitor to double-check the amount of electricity I'm actually using to charge the Leaf (vs. what the Leaf says it consumes from the battery to propel itself).
Has anyone had...