I have a 2017 Grand Cherokee TrailHawk. I cannot disable the rear park assist with either the push button switch or the touch screen option to disable. When I push the button it disables for a couple seconds and switches right back to enabled. The same thing happens when I use the touch screen to select the option to turn it off. It turns it right back on. I have disconnected the batteries and discharged the lines and it still persists. Anyone else have this issue? Does this require a reload of the system at the dealer?