The reason why I ask about the tune is because the car might be in transport mode.
I know you can access the JB4 console by pressing at the same time volume down and tune down. If your tacho goes crazy, and the small screen goes blank then you have a JB4
I'm not sure how to access the procede console...
oh btw, when you said there is no codes did you check it with a tool? or on did you check control on the dash?