Front suspension position is below the expected absolute limit
Aux 5th Raise Coil solenoid shorted to 12 volts.
Oil Pressure Sensor voltage is too low (engine controller pin A33)
Front suspension position is below the expected absolute limit
If Heater does not work,Low coolant level. Check coolant level; add if necessary, faulty thermostat, heater control valve not functioning properly ,heater core or hoses clogged or damaged. Flush cooling system. See your John Deere dealer or replace heater core or hoses.