Looks like my engine water pump is due for a replacement. Do you guys usually do both the engine water pump and inverter pump at the same time or do you do them separately?
How many miles your car has? i don't think it is necessary to replace it, if it's working there is no need to fix. But if you want to do it, well then. My 2012 Prius C has 113,120 miles and still with both original engine coolant pump and inverter coolant pump.