CONTROLS - Guide to the Warning Symbols Emissions, High Exhaust System Temperature Illuminates when an engine emissions failure has occurred. The vehicle can be safely driven but should be serviced to correct the problem. The situation should not be considered an emergency. In some cases, the Malfunction Indicator Lamp will activate in conjunction with the High Exhaust Temperature, Diesel Particulate Filter (DPF) and Diesel Exhaust Fluid (DEF) Warning Lights. HEST lamp is illuminated. Failure to do so could result inserious injury.
WARNING 3 If this light is on, temperature of the tailpipe, exhaust pipes, the diesel par- ticular filter (DPF) / selective catalytic reduction (SCR) device and surround- ing components including enclosures and steps becomes elevated during engine operation or any regeneration event and can cause serious burns to the skin. Allow adequate cooling time before approaching, working on or near any part of the exhaust system or surrounding components. WARNING If this light is on, do not park in an area of combustible vapors or materials. You must keep combustibles at least five (5) feet away from the exhaust (outlet) stream (as it exits the tail pipe) while the HEST lamp is illuminated.
Al- ways park your vehicle outside. Failure to do so could ignite an explosion or harm bystanders which could result in serious injury. Engine, Check Engine Illuminates when a non emissions related problem exists, but the vehicle can still be safely driven. Vehicle should be serviced to correct the problem but the situation should not be considered an emergency. Illuminates when the exhaust gas temperature and exhaust components become extremely hot. WARNING Emissions, Malfunction Indicator Lamp Engine, Engine Fan If this light is on, do not park in an area where people are close by.
You must keep combustibles at least five (5) feet away fromthe exhaust outlet while the Illuminates when the engine fan is active. (Not available with optional Variable Speed Fan Drive) Y53-6047-2HEN (03/18) 81