One problem related to water pump has been reported for the 2016 Toyota Prius. The most recently reported issues are listed below.
Tl the contact owns a 2006 Toyota Prius. While driving 66 mph, the vehicle decelerated and lost power in the middle of traffic. The contact attempted to place the vehicle into neutral, but was unsuccessful. The vehicle was towed to the contact's residence and then towed to an independent mechanic. The mechanic diagnosed that a fuse was blown and a new water pump needed to be installed. The vehicle was not repaired. The manufacturer was made aware of the failure and did not assist. The dealer was not contacted. The failure mileage was 223,601. The VIN was unknown.