Why Regeneration Is Important
Modern John Deere tractors are built to meet strict emissions standards set by the Environmental Protection Agency (EPA). These standards, phased in over the past two decades, require engines to significantly reduce the amount of particulate matter released into the air.
To meet these requirements, your tractor is equipped with a Diesel Particulate Filter (DPF). Over time, the soot builds up in this filter, and it needs to be cleaned out to keep your engine running smoothly. That’s where the regeneration process comes in.
How Regeneration Works
Regeneration is the process your tractor uses to burn off the soot collected in the DPF. There are three types:
- Passive regeneration happens automatically during normal operation when the engine runs hot enough to burn off soot.
- Active regeneration kicks in when the engine needs to raise the exhaust temperature to clean the filter. This may happen while you’re working, and you might notice a slight change in engine tone or performance.
- Parked regeneration is a manual process that occurs when the filter needs cleaning, but conditions aren’t right for passive or active regeneration. You’ll be prompted to park the tractor and let it complete the cycle.
What You Should Do
To keep your tractor running at its best:
- Always leave the regeneration system in AUTO mode.
- Let the regeneration process finish when it starts—don’t shut off the engine mid-cycle.
- Watch for alerts on your display and follow any instructions for parked regeneration.
- Avoid long periods of idling, which can prevent the system from regenerating properly.
- If for some reason you absolutely need to shut the machine down while a regen is taking place, abort the regen and then wait for the regen light to go out on the display before shutting down the machine.
Skipping or interrupting regeneration can lead to performance issues and may require a service visit. Keep in mind that damage caused by neglecting regeneration isn’t covered under warranty.
Need More Help?
For more details, check your Owner’s Manual or visit the John Deere Engine Information page. And of course, your local TriGreen Equipment service team is always here to help with any questions or concerns.