The lift gate refused to operate from the tailgate open button, the fob tailgate open button, or the dash mounted tailgate open button, It took multiple attempts to actually force the gate to open, I tried to manually hold the tailgate open button. It did not respond. Finally, I shut the engine off, then restarted the engine, and utilize the tailgate mounted open button. The gate actually opened. This is not the first "hiccup" of this nature, but clearly the most sufficient, and I will be in-touch with the dealership soon.