check the wires to the plug on the shiftier. they can break off and cause this issue.
doing the zip tie deal works, but it also allows the shiftier to be taken from park when the car is off.
I'd rather show him how to fix the problem correctly. No zip ties for this repair. I can trouble shoot electric problems, I'll teach him how to fix this so he learns more about working on cars. There is a lot of things to fix on this car :-)