Started my P38 this morning and got a Select Neutral message along with the annoying beep and flashing lights on the shifter console. Put it in neutral and no relief. Tried to engage Low gears and it seemed to work fine but still beeped and flashed. Engaged high gears and it drove fine but was still beeping and flashing. I did do some boondocking this weekend and used the low gears for a while. Any ideas?