116 STARTING AND OPERATING 1. With the transmission in PARK, the parking brake applied, and the engine running, turn on the Cruise Control, then push the SET (-) button. N OISE directly into the SCR through an dosing module. This process will create a clicking sound and at times, will make noise even with the vehicle shut off. This is normal as the DEF dosing module is purging DEF. If at any time the check engine light is on, please visit an authorized dealer. S TOPPING T HE E NGINE Diesel engines can create noises that may seem as a concern. The nature of a diesel engine is compression ignition where compressed air and fuel are mixed and ignited.
Weather, barometric pressure, altitude and temperature will affect how fuel is ignited in the engine. Engines will sound different from day to day or previous model years. Clicking, ticking, or light knocking is normal and will change from day to day, as the engine breaks in, and can vary with changes in ambient temperature; this is normal. Diesel equipped vehicles also have an exhaust after treatment system to reduce emissions utilizing a Diesel Particulate Filter (DPF) and a Selective Reduction Catalyst (SCR). The SCR reduces Nox using the Diesel Exhaust Fluid (DEF) system. DEF is injected 2. The engine RPM will go up to 1,100 RPM.
To increase the RPM, push and hold the RES (+) button and the idle speed will increase to approximately 1,500 RPM. To decrease the RPM, push and hold the SET (-) button and the idle speed will decrease to approximately 1,100 RPM. Idle the engine a few minutes before routine shutdown. After full load operation, idle the engine three to five minutes before shutting it down. This idle period will allow the lubricating oil and coolant to carry excess heat away from the combustion chamber, bearings, internal components, and turbocharger. This is especially important for turbocharged, charge air-cooled engines. Refer to the following chart for proper engine shutdown: 3.
To cancel the Idle–Up feature, either push the CANCEL button, push the ON/OFF button, or press the brake pedal. Driving Condition Load Turbocharger Temperature Idle Time (min.) Before Engine Shutdown Stop and Go Empty Cool Less than One Stop and Go Medium - One Highway Speeds Medium Warm Two City Traffic Maximum GCWR - Three Highway Speeds Maximum GCWR - Four Uphill Grade Maximum GCWR Hot Five