If you have a Detroit DD series engine with an automatic Detroit Dt12 transmission configuration, proceed with the following procedure:
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Coolant temperature at or above 150°F
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Parking brake set
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Transmission in neutral
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Cruise control off
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The following steps are all completed using the buttons on the steering wheel
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Press the ↵ button, scroll through the top menu icons until you find the semi truck / trailer symbol
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Press the OK button, then scroll through the 4 screen until you find the screen that shows the soot level / parked regeneration prompt
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Again press the OK button and if a parked regen is required it will you prompt you to press the OK button once again and the RPMs will rise and the process will begin
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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
