LOCO just checked, it's shows transfer box potentiometer signal unreliable. Don't know if the plug on transfer box are loss or something else, it's show after i tried hit 130 miles per hour, when i try to park at home, it's showed, after i restart the car, the light goes off, but somehow it would shows again while driving after break paddle. After restart the engine it's off, showed at driving time, battery voltage around 14v while driving situation. So sad