RPM 521991.12 – Control Unit for Range Shifting, Temperature Too High

RPM 521991.12 (RPM )

Code: 521991.12

Shortcode:

Description:

This diagnostic trouble code is generated if the control software detects that the temperature of the control unit for gear shifting is too high. This may occur if an extremely high number of shifts are performed in a short period of time.

Reaction:

When this error is detected, the ranges cannot be engaged, preventing further shifting.

Recommendations:

  • Allow Cooling Time:
    • Allow the control unit to cool down by reducing the frequency of gear shifts. Turn off the equipment and let it rest for a while.
  • Inspect Ventilation and Cooling:
    • Check the ventilation and cooling system around the control unit. Ensure that fans and vents are working properly and are not obstructed.
  • Check for Overheating Causes:
    • Investigate any external factors that could be causing the control unit to overheat, such as high ambient temperatures or heavy-duty operations.
  • Update Control Software:
    • Ensure the control software is up-to-date. Install the latest software updates from the manufacturer to improve performance and heat management.
  • Consult Technical Support:
    • If the error persists, consult John Deere technical support or a certified technician for further diagnosis and resolution.

 

Note:

Regular maintenance and monitoring of the control unit and its cooling system can prevent overheating issues. Avoid excessive gear shifting in a short period to minimize the risk of overheating.


Control Units: John Deere

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