AIC 523670.11 – Drive Lever in Gear at Startup. John Deere System Alert.

AIC 523670.11 (AIC )

Code: 523670.11



The error code AIC 523670.11 is triggered when the vehicle is started while the drive lever is in either a gear increase position or a gear decrease position. This situation is not typical for standard operational procedures and indicates that the drive lever was not in a neutral position at startup, which could lead to potential safety risks or mechanical stress.


In response to this condition, the control unit automatically defaults the transmission to neutral to prevent any unintentional movement or damage upon startup, ensuring the safety of both the operator and the equipment.


  • Inspect the Drive Lever Mechanism: Check the drive lever for any signs of damage or misalignment that might prevent it from returning to the neutral position.
  • Test the Lever’s Position Sensors: Ensure that the sensors detecting the lever’s position are functioning correctly and accurately reporting the lever’s state.
  • Review Startup Procedures: Verify that the standard operational procedures include checks to ensure the drive lever is in neutral before starting the vehicle.
  • Educate Operators: Reinforce training for operators to check the drive lever position before ignition, emphasizing the importance of this step in pre-start checks.
  • Adjust or Repair the Drive Lever: If the drive lever or its positioning system is faulty, make the necessary adjustments or repairs to ensure it can consistently and reliably return to neutral.
  • System Reset and Testing: After any repairs or adjustments, reset the system to ensure all electronics recognize the correct lever positions. Conduct tests to confirm the issue has been resolved and that the vehicle responds appropriately at startup.


Maintaining strict adherence to startup protocols is essential for the safety and longevity of machinery. Regular checks and maintenance of the drive lever and its associated sensors can prevent issues related to incorrect lever positions at startup, thereby ensuring the machine operates safely and efficiently.