Stopped in intersection waiting to make a left turn. when attempting to accelerate engine did not start hybrid warning stated hybrid system failure stop immediately. glided to a parking space. attempted to restart engine continue to get same warning. after three attempts called aaa and toyota dealership. i was urged to tow the vehicle. after approximately 20 minutes, attempted to start again the vehicle turned on as if nothing happened. all warning lights at that time were extinguished. dealership found a general warning on vehicle computer. dealership could find nothing wrong with the vehicle.