One problem related to car will not start has been reported for the 2015 Toyota Prius. The most recently reported issues are listed below.
Car was stationary in driveway car would not start and master warning light was on in addition to a warning saying "shift malfunction. When parking, park in flat place and apply parking brake securely" a buzzer was sounding. This indicates a shift control system error. The car would not start. Notified dealer and the car was towed. No error codes were found. The car started for the dealer.