John Deere 1504.14 – XSC / SSU / BCU: Operator Not Seated While AutoTrac Active

The system has detected that no operator has been on the seat for more than 7 seconds while the AutoTrac (auto-steer) function is activated. This causes the control software to limit functionality and deactivate the AutoTrac guidance system.

• 6110M
• 6120M
• 6130M
• 6145M
• 6155M
• 6175M
• 6195M
• 6110R
• 6120R
• 6130R
• 6145R
• 6155R
• 6175R
• 6195R
• 6215R
• 8225R
• 8235R
• 8245R
• 8260R
• 8285R
• 8310R
• 8335R
• 8360R
• 8400R
• 7R Series
• 6R Series
• 9R Series
• 4930

1. 1

   Verify the operator is seated correctly with full weight on the seat cushion and that the presence switch is engaged when attempting to operate AutoTrac.

2. 2

   Inspect the operator presence switch (located under or inside the seat cushion) for any physical signs of damage, wear, or debris preventing it from closing.

3. 3

   Inspect the wiring harness and connectors leading from the seat switch to the main cab harness for pinches, breaks, or loose connections.

4. 4

   Check for and install any available updates for the control software, as bugs or signal processing issues related to the operator presence switch can sometimes trigger false codes.

1. 1

   Reset the System

   Sit firmly in the operator's seat and restart the vehicle. Attempt to engage AutoTrac. If the code does not return, it was likely a temporary loss of seat contact.

2. 2

   Test the Switch

   If the code returns immediately, power down the machine. Locate the operator presence switch harness under the seat. Using a multimeter, test the switch for continuity. It is typically a normally open (N.O.) switch that should close (show continuity) when weight is applied to the seat.

3. 3

   Replace the Switch

   If the switch fails the continuity test, remove the seat cushion or switch mounting plate and replace the faulty operator presence switch.

4. 4

   Reassemble and Calibrate

   Plug the new switch into the wiring harness. Restart the tractor, sit in the seat, and engage AutoTrac to verify the XSC/SSU module registers the operator and the code is cleared.