Our dishwasher's control panel has started locking itself. We have done the five second hold on the no heat dry button. When we do this the first time the panel goes dark until we press another button, then the lock comes back on. When we press/hold the second time the no heat dry light and panel lock button both flash. No other keys will light up at any time during this process. The unit is black and I think the full model number is 665.16819990 (though this might be the wrong color code.

Do I need to the by the control panel assembly (OEM #9744031) or is there another step I might try? Took the covers off and didn't see any signs of damage/wear/bad connections so this was my next guess though I don't want to spend a $100+/- if I don't have to.

Thanks