NASHVILLE, TENN. (RFD NEWS) — As the Environmental Protection Agency (EPA) loosens restrictions around diesel exhaust fluid (DEF), equipment manufacturers are moving quickly to adapt to changes that promise to save producers over a billion dollars in two years.
Under previous rules, farm machinery could automatically reduce performance—or “derate”—if DEF system issues weren’t resolved quickly, often creating headaches during planting or harvest.
The EPA estimates the updated DEF sensing rules could save family farms approximately $727 million annually. The change is expected to provide relief for producers navigating tight margins, while also helping equipment manufacturers facing declining demand and ongoing “right to repair” pressures.
Developers at John Deere say they are rolling out software updates as quickly as possible to help farmers avoid costly disruptions during critical operating windows. Denver Caldwell with John Deere says DEF-related issues can quickly escalate if not addressed.
“When DEF runs low, the machine can derate, and if it’s not addressed in time, it can cause even further delays to the customer at the end of the day, end of a season, and it can impact their operation. Those are frustrating during those critical windows for our customers.”
Caldwell says the updated policy gives producers more flexibility to address issues before performance is impacted.
“EPA now allows manufacturers like John Deere to increase the amount of time that an owner has to resolve those issues prior to triggering some of those derates, some of those problems that customers really don’t like. We’re actively in the process of delivering the software updates to both new machines and those in the field — that would extend that window of time per EPA allowance before that machine derates.”
The extended window before derates take effect could be especially valuable during time-sensitive seasons, allowing farmers to keep equipment running longer while addressing DEF system alerts on their schedule. For many producers, fewer interruptions could translate to improved efficiency—and fewer costly delays when timing matters most.
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