Fendt 5.1.55 – DIFFERENTIAL LOCK ENHANCED CONTROL: Signal fault from component S005 - Right brake pedal solenoid switch

The system detects that the switch is faulty or the signal is out of range. Because the tractor cannot verify the position of the right brake pedal, the automatic differential lock mode is no longer available, and the Tractor Management System (TMS) is switched off. The manual '100% differential lock' is the only differential lock function that remains available to the operator.

• 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
• 411 Vario COM III
• 412 Vario COM III
• 413 Vario COM III
• 414 Vario COM III
• 415 Vario COM III
• 712 Vario COM III
• 714 Vario COM III
• 716 Vario COM III
• 718 Vario COM III
• 818 Vario COM III
• 820 Vario COM III
• Farmer 400 Vario
• Favorit 700 Vario
• Favorit 900 Vario (chassis number 23/3001 and up)
• 300 Vario (COM III)
• 800 Vario (COM III)

1. 1

   Verify symptoms: confirm that the TMS has switched off and the automatic differential lock is disabled, but the 100% manual differential lock still functions

2. 2

   Consult the '4WD / Diff. Lock' circuit diagram for wiring references

3. 3

   Inspect the S005 solenoid switch on the right brake pedal for proper signal output

4. 4

   Inspect the wiring harness connecting S005 to the Differential Lock Enhanced Control module for continuity, shorts, or breaks

1. 1

   Locate switch

   Power down the tractor and locate the S005 solenoid switch on the right brake pedal assembly.

2. 2

   Disconnect harness

   Disconnect the electrical harness from the switch.

3. 3

   Remove switch

   Remove the faulty switch from its mounting bracket.

4. 4

   Install and adjust replacement switch

   Install the replacement switch and adjust it so that the break contact registers correctly when the pedal is in its resting position.

5. 5

   Reconnect harness and clear codes

   Reconnect the wiring harness and clear the fault codes using the FENDIAS diagnostic tool to restore TMS and automatic differential lock functionality.