My engine was replaced because I ran over a piece of construction debris and it punctured a hole in the engine. The mechanic says that everything is installed and ready, except for the fact that they cannot get the car to start. They said that they are sitting in the car with the key, and press the Start Button, and nothing.... It is completely unable to start. They don't know what the issue is. What could be causing the 2012 Prius V Wagon to not start after the engine was replaced?
The main cause would be they forgot to connect something. Does the engine even turn? You have literally given us no useful information.