Scaramanga wrote:I think I may have the same problem. After putting my '16 on to charge today (@28% SOC) I came back out the garage after three hours and heard a high pitched whine, really pretty loud. After reading Dave's post I wanted to see if my charger was keeping cool, and it's definitely not. The top of the Power Delivery Module was much too hot to touch for more than a few seconds and only one of coolant hoses coming out of the front of the inverter(?) was even warm. I'm not sure it's moving water, if it is it's not evident, certainly can't hear any coolant moving. Radiator fans were not running.
I unplugged the charger and the pump spun down and stopped, but the PDM is still zinging hot.
I don't have a no-touch thermometer, so I can't be precise, but it's hot. I get that it should get warm, but I'm really not comfortable with the sound of the water pump, it shouldn't be that loud in my view.
I'll get it checked out at the dealer right away.
There is actually a VERY easy test you can do. While plugged in (might need to wait a bit) check the pressure on the hoses. The pressure should be high enough that you will not be able to squeeze them more than a few millimeters. Before my replacement, I could squeeze the hoses enough that the insides touched.
My water pump was working but had a busted impeller which meant it was not working very well (hardly at all actually)