No. When you enable "OCR" (whether it's as an add on when ordering the truck, or yourself with Forscan) all you are doing is telling the computer to add the DPF% screen and the Auto Regen option box to the trucks instrument cluster. This doesn't actually change how the trucks handles regens. But, once you enable this option you can then turn Auto Regen off by unchecking the box in the instrument cluster, and that will now tell the truck not to go into an Auto Regen.

Passive regens will still occur because a passive regen simply happens when the exhaust temps reach a certain point, at which point the soot begins oxidizing. This generally happens when you drive the truck for longer periods of time and at higher speeds, or when working the truck by towing. Like I mentioned above, on a normal basis, I don't drive my truck long enough, or hard enough so I don't really get any passive regen, however, you cannot turn a passive regen off. It is just something that happens when the truck gets warmed up enough.

On the other hand, Auto Regen allows the truck to go into an active regen, which happens when the DPF is "full" and tells the truck to work harder to get those temps up, but it needs to hold those parameters until the DPF reaches 0%. If you do a lot of highway driving, that's typically not a problem because you will maintain speed for a long enough time frame to let an active regen complete, but in my case, that won't happen. If I left Auto Regen turned on and simply went about my daily business the truck would never be able to complete a regen and my filter would clog up pretty quick because I do short trips with lots of stop and go.

So, to keep my filter clean, I keep the auto regen unchecked in my instrument cluster. (This is not the same thing as removing/disabling the "OCR" feature, it's turning off the auto regen.) I keep an eye on the DPF% screen and when I start getting around 90% full I start thinking about when I can take a longer drive in the next day or 2 because it will soon hit 100%. Then, once my truck tells me it's full, I take that drive. (Another option if I can't be on the road is that I can also do a stationary regen in my driveway once it hits 100%.) When I start driving I simply check the Auto Regen box back on and once the truck reaches temps it will then do an active regen. So then I just keep driving at higher speeds and wait until it hits 0% and then turn the Auto Regen back off and start the waiting and watching process over again.

 

I think you are confusing the posters... the OP was wondering about early regen and how to turn on/off the Auto Regen. I am the one that drives short distances so described how/why I keep my Auto Regen turned off.

 

^^^This.

Just drive it and let it do it's thing. That's how the system is designed from 2020-on.

 

That I did. Sorry for the intrusion.lol