How to do a regen on 2008-2018 Freightliner Cascadia?

If you have a manual transmission with a Detroit DD series engine, this is the procedure:

  1. Coolant temperature at or above 150°F

  2. Parking brake set

  3. Transmission in neutral

  4. Cruise control off

  5. Press and release the clutch pedal twice

  6. Press and release the parking brake twice

  7. Locate the regen button on your dash panel (usually has a cover over it that you flip up to access the button), press and hold the button for about 10 seconds or until the RPMs rise and the instrument cluster verifies that it is now in regen

  8. Once the parked regen is completed, the RPMs will come down and and the “REGEN IN PROGRESS” message will disappear, there will be a high exhaust temperature symbol left on the dash, leave the truck running for about 5 minutes to allow the exhaust system to cool off properly

  • A parked regen normally takes about 45 minutes to 1 hour, if in the case you need to end or cancel the parked regen, you can press the brake or accelerator pedals, cruise control button or release the parking brake (if it’s safe to do so)
  • If it does not perform a regen, there may be a number of reasons such as: soot level is not high enough, the procedure was done to slowly or incorrectly, an active fault code related to the exhaust aftertreatment system

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