Fendt 6.1.42 – Rear PTO Enhanced Control: S020 - Right external 'Rear PTO ON / OFF' pushbutton — Key pressed for more than 30 seconds.

The system detects that the right rear mudguard/fender button used to engage or disengage the Power Take-Off (PTO) has been in a closed (pressed) state for over 30 continuous seconds. As a result, PTO speed selection moves to neutral, no preselection is possible, and the PTO cannot be engaged normally.

• 409 Vario
• 410 Vario
• 411 Vario
• 412 Vario
• 711 Vario
• 712 Vario
• 714 Vario
• 715 Vario
• 716 Vario
• 717 Vario
• 718 Vario
• 916 Vario
• 920 Vario
• 924 Vario
• 926 Vario
• 930 Vario
• Farmer 409
• Farmer 410
• Farmer 411
• Farmer 412
• Favorit 711
• Favorit 712
• Favorit 714
• Favorit 716
• Favorit 916
• Favorit 920
• Favorit 924
• Favorit 926
• Favorit 930
• 300 Vario
• 400 Vario
• 700 Vario
• 800 Vario
• 820 greentec
• 900 Vario

1. 1

   Inspect the S020 right external PTO button on the rear mudguard for physical jamming due to packed dirt, debris, or a broken internal return spring.

2. 2

   Perform an electrical continuity test on the switch by disconnecting the wiring harness. The circuit should only close when the button is actively pressed. Constant continuity indicates an internal short.

3. 3

   Inspect the wiring harness running from the right mudguard to the PTO control module for pinched wires, chafing, or melted insulation that could cause a short to ground or power.

1. 1

   Preparation

   Turn off the tractor, remove the ignition key, and ensure the machine is parked safely.

2. 2

   Access the Switch

   Locate the S020 PTO switch on the right rear mudguard. Clean the surrounding area thoroughly to prevent dirt from falling into the electrical connectors.

3. 3

   Removal

   Reach behind the mudguard panel and disconnect the electrical plug from the switch. Squeeze the retaining tabs or remove the locking nut (depending on the exact model year) to push the switch out through the top of the mudguard.

4. 4

   Installation

   Insert the new PTO command switch into the mudguard cutout until it clicks securely into place.

5. 5

   Reconnection

   Apply a small amount of dielectric grease to the electrical connector to prevent moisture ingress, then plug the harness back into the switch.

6. 6

   Testing

   Turn the tractor on. The fault code may move to a "stored" state or clear automatically. Test the PTO engagement from the cab and from the newly installed external switch to verify that speed selection and engagement functions have been restored.