Well, thank for this Bigcow 74, I honestly never searched for overhead panel on the TBM 930 or did not noticed this button, simply because the main dashboard is already seriously populated 
… will have to check this. For the use of the nav system , I have no problem as I use it an all other aircraft, but thanks anyway.
The question is why this auto pilot do not care of he auto pilot button of my joystick ?
Thanks again for your suggestion.