Posted 9/16/2020 21:43 (#8499845 - in reply to #8499632) Subject: RE: JD 9770 hydro handle switches
If this is a 3 speed transmission, handle position should have no effect on the buttons. If it does, it has to be wires in the handle or in the connectors for the handle on the armrest control unit.
If this is a ProDrive, it’s possible the armrest controller could be on the fritz. Accessing the diagnostic address for the armrest control unit should help you out, as stated in the previous comment.