I just bought a 2016 Prius Two and THE DAY I drove it off the lot it went into limp mode while going down the highway. Dealership said if it happens again call them, two days later it happened again and the OBD reader said it was a water pump issue. Dealership “special ordered” an OEM water pump that I paid $375 for. After I got home and was about to install it I noticed the coolant reservoir was nearly empty and there was coolant around the overflow valve. I think some jackass mechanic at this dealership put too much coolant in it and when it got hot and blew out the excess it must have sent me into limp mode? It hasn’t happened all week, so I’ve got a brand new water pump that I’m pretty sure I don’t need. Sorry for the rant, does anyone need a water pump or know where I should post it for sale? Tristan