Hi I’ve a Massey 5613 which has suddenly lost all drive and error t114 comes on once you try to drive. The 4wd light flashes but the switch won’t engage or disengage it . The pto , diff lock , pto speed selection and even edc won’t work . Electric and manual spool works as does the steering . Checked all the fuses that I can find and even the multi plugs at the bottom and back of the cab. Any ideas thanks