Fendt 08.1.43 – Rear EPC (Electrohydraulic Power Control): S028 - Switch (external), lower rear power lift, right

Signal fault or signal line fault originating from the right-hand external button used to lower the rear three-point hitch. The system has detected that the button is faulty, causing the control module to lock out the external button.

• 922 Vario COM III
• 924 Vario COM III
• 927 Vario COM III
• 930 Vario COM III
• 933 Vario COM III
• 936 Vario COM III
• Fendt 300 Vario series
• Fendt 400 Vario series
• Fendt 500 Vario series
• Fendt 700 Vario series (including COM III / SCR)
• Fendt 800 Vario series (including COM III / SCR)
• Fendt 900 Vario series (including COM III / SCR)

1. 1

   Verify if the rear power lift can still be operated internally from the cab (fault typically locks out external controls only)

2. 2

   Inspect the physical S028 switch on the right rear mudguard for damage, sticking, or heavy mud/debris ingress

3. 3

   Trace the wiring from the S028 switch to its separation point (connector X238) and check for corrosion, moisture, or broken wires

4. 4

   Use a multimeter to test the switch for proper continuity when pressed and released to confirm if the switch has failed internally

1. 1

   Safety First

   Turn off the tractor engine, remove the ignition key, and ensure the rear hitch is fully lowered to relieve any hydraulic pressure.

2. 2

   Access the Switch

   Go to the right rear mudguard where the external lift controls are mounted.

3. 3

   Disconnect

   Unplug the faulty S028 switch from the wiring harness at connector X238.

4. 4

   Remove

   Unbolt or unclip the old switch from the mudguard housing.

5. 5

   Clean

   Thoroughly clean the harness connector. Apply a small amount of dielectric grease to the electrical contacts to prevent future corrosion from dust, mud, and moisture.

6. 6

   Install

   Mount the new external lower switch into the mudguard and plug it into the X238 connector.

7. 7

   Reset and Test

   Perform a 'cold start' by turning the ignition ON. This resets the control module and clears the lockout state. Test the new right-hand lower button to confirm the rear power lift operates smoothly.