SSU 001504.14 – S40 Operator Presence Switch, Noone on Operator’s Seat While AutoSteer is Running

SSU 001504.14 (SSU 1504.14)

Code: 001504.14

Shortcode: 1504.14


This diagnostic trouble code (DTC), SSU 001504.14, is triggered when the AutoSteer function is activated, and no operator is detected on the seat for longer than 7 seconds. This indicates a safety concern as AutoSteer requires the operator to be present.


When this error is detected, the equipment may take measures to alert the operator or potentially disable the AutoSteer function to ensure safety.


Check Operator Presence Switch:

  • Ensure that the operator presence switch (seat switch) is functioning properly and accurately detecting the presence of the operator.

Verify Seat Switch Connections:

  • Inspect the wiring and connectors related to the seat switch for signs of damage, loose connections, or corrosion.
  • Ensure all connections are secure and free from contaminants.

Update Software:

  • Ensure that the software related to the AutoSteer and operator presence detection systems is up-to-date. Apply any available firmware updates to improve system performance and compatibility.

Replace Faulty Components:

  • If the operator presence switch or related components are found to be defective, replace them with new, genuine parts.

Consult Technical Support:

  • If the error persists after performing the above steps, consult technical support or the manufacturer for further assistance.


  • Regular maintenance and inspection of the operator presence detection system can help prevent invalid signals.
  • Ensuring the operator presence switch is functioning correctly is crucial for the safe operation of AutoSteer.

Control Units: John Deere

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