Parked Regeneration Operations
Parked regen is initiated by selecting OK when the driver display screen shows ‘Parked Regen Available’ or ‘Parked Regen Required.’ See Fig.. If the vehicle is equipped with the optional digital Stop Regen feature, a parked regen can be stopped by selecting OK while the regen is in progress. See Fig..
Some vehicles may be equipped with a REGEN OFF dash switch. See Fig.. To stop a regen in progress or prevent the start of a regen, toggle the switch upwards.
Fig. 1, Stop Regen Dash Switch
Note: Parked regen can be initiated only when the diesel particulate filter (DPF) lamp is illuminated.
Note: During parked regen, exhaust temperatures are very high and could cause a fire, heat damage to objects, or personal injury to persons near the exhaust outlet.
Before initiating a parked regeneration, make certain the exhaust outlets are directed away from structures, trees, vegetation, flammable materials, and anything else that may be damaged or injured by prolonged exposure to high heat.
To initiate a parked regen, perform the following steps.
- Park the vehicle away from all flammable materials, put the transmission in neutral, and set the parking brake.
- Start and warm the engine until the coolant temperature is at least 150°F (66°C).
- Select OK when the diesel particulate filter (DPF) screen is displayed on the driver display. See Fig.. Select OK again to confirm regen. As the regen process is initiated, engine rpm increases and the HEST lamp illuminates to indicate extremely high exhaust temperatures.
- The regen cycle will finish after 20 to 60 minutes, at which time engine idle speed will drop to normal and the vehicle can be driven normally. The HEST lamp will extinguish when vehicle speed exceeds 5 mph (8 km/h) or the system has cooled to normal operating temperature.
- To stop a parked regen at any time during the process:
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depress the clutch pedal, brake pedal, or accelerator pedal;
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select OK on the parked regen screen while the regen is active, then select OK again to confirm;
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toggle up the REGEN OFF dash switch;
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shut down the engine.
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Start Regen Message Screen
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Stop Regen Message Screen
Fig. 2, Parked Regen Message Screens
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Important: The driver must remain with the vehicle during the entire regen cycle.