Iowa lawmakers have pushed the right to repair conversation into new territory with House File 2529, a bill that focuses specifically on diesel exhaust fluid (DEF) systems—the single most common cause of emissions-related downtime on modern farm machinery.
The bill would require manufacturers to provide farmers and independent repairers with the diagnostic information, repair procedures, and software needed to fix DEF system failures.
Unlike broader right-to-repair proposals, House File 2529 zeroes in on the emissions controls that routinely stop tractors, sprayers, and combines in their tracks. For many producers, this is the system that most often prevents them from repairing their own equipment—even when the mechanical fix is simple.