CSM 523805.02 — Single Lever Control Fore-Aft Detent Switch Circuit Fault

CSM 523805.02 (CSM )

Code: 523805.02



This error code, CSM 523805.02, indicates a failure in the single lever control fore-aft detent switch circuit. This may be caused by a malfunction in the switch mechanism, wiring issues, or sensor faults.


The function of the single lever control is disabled to prevent incorrect operations.


Inspect Fore-Aft Detent Switch:

  • Check the single lever control fore-aft detent switch for any signs of malfunction or wear. Replace the switch if necessary.

Check Wiring and Connections:

  • Inspect the wiring and connections related to the fore-aft detent switch for any damage, loose connections, or corrosion. Secure and clean all connections.

Test Switch Functionality:

  • Use diagnostic tools to test the fore-aft detent switch and ensure it is functioning correctly.

Reset and Test System:

  • After addressing the issue, reset the system and perform tests to ensure the fore-aft detent switch is operating correctly and the single lever control function is restored.


Regular maintenance and inspection of control switches and associated wiring can help prevent faults. Promptly addressing any signs of malfunction can ensure reliable system operation.

Control Units: John Deere

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