Regen Switches Procedure
4700 dm 12.01.003
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).
- Press and hold the regen switch for five seconds. The engine will increase rpm and initiate the regen process. 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 drops to normal and the vehicle can be driven normally. The HEST lamp is extinguished 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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press and hold the regen inhibit switch until idle returns to normal;
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shut down the engine.
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Important: The driver is responsible forensuring,during the entire regen cycle, that anything that could be harmed by exposure to high heat does not come in contact with theexhaustgases flowing from the outlets.
Note: