Has anyone experienced the sound system going into Audio off mode ? It has happened twice in the 4 months I have owned the ST. According to my research on you tube the only way that I have to correct this is either shut the vehicle off and start it up and it resets the itself. The other way is to push the and hold the volume knob in simultaneously with the arrow up button until the screen goes black and then it will reset itself. Which the latter method can be done with the vehicle running. Just wondering if this a system issue or something I inadvertently have done while in the car