2004- 2007 Prius' have an issue with the inverter pump, unbeknown to me until yesterday. The inverter has it's own cooling loop, when the pump fails, as you would expect, things get hot. I think the inverter melted, it emanates electrical failure.
There is a recall on the pump, and it's going to the dealer on Monday. Dead at 156K. Just a heads up for any of you that bought one of these turds.