There is a new recall (actually a Limited Service Campaign) on the unreliable 2004-early2007 Prius electric inverter water pump (see attached). Good news - a free replacement of this unreliable part with a redesigned version Bad News - I Already replaced mine at 150,000 miles. Good news - according to my dealer, after they do the recall I can submit my earlier receipt for the work and get it rebated. I will wait a month or so so that the coolant refresh at 200,000 miles is paid for as part of the recall (at least for the inverter coolant loop). JeffD ps: Here is the description from the Toyota site: 2.Limited Service Campaign (LSC) A0N - 2004 through Certain 2007 Model Year Prius Vehicles - Electric Hyrbid Water Pump Replacement Code: A0N Memo This is a Limited Service Campaign. Please contact your authorized Toyota dealer to schedule an appointment to replace the Electic Hybrid Water Pump (HV Water Pump) before November 30, 2013. What is the Condition: On 2004 through certain 2007 model year Prius vehicles, there is a possibility that air may remain at the bearing of the Hybrid Electric Water Pump (HV Water Pump), causing pump actuation to be slow. In this condition, the temperature of the coolant could rise and become high, which will result in illumination of the Malfunction Indicator Light (check engine light “ON”) for diagnostic code P0A93 with information code 346 (Inverter cooling system malfunction).