2014 Jeep Grand Cherokee User Guide - Page 149

DIESEL NOTE: • Driving conditions (altitude, vehicle speed, load, etc.) will effect the amount of DEF that is used in your vehicle. • Since DEF will begin to freeze at 12°F (-11°C), your vehicle is equipped with an automatic DEF heating system. This allows the DEF injection system to operate properly at temperatures below 12°F (-11°C). If your vehicle is not in operation for an extended period of time with temperatures below 12°F (-11°C), the DEF in the tank may freeze. If the tank is overfilled and freezes, it could be damaged. Therefore, do not overfill the DEF tank. Extra care should be taken when filling with portable containers to avoid overfilling. Note the level of the DEF gauge in your EVIC. You may safely add a maximum of 2 gallons of DEF from portable containers when your DEF gauge is reading ½ full. Diesel Exhaust Fluid (DEF) Warning Messages • Your vehicle will begin displaying warning messages when the DEF level reaches a driving range of approximately 500 miles (800 km). • If the following warning message sequence is ignored, your vehicle may not restart unless DEF is added with in the displayed mileage shown in the EVIC message. • Engine Will Not Restart in XXXX mi DEF Low Refill Soon - This message will display when DEF driving range is less than 500 miles, DEF fluid top off is required with in the displayed mileage. The message will be displayed in the EVIC during vehicle start up with the current allowed mileage and accompanied by a single chime. The remaining mileage can be pulled up anytime by way of the "Messages" list within the EVIC. • Engine Will Not Restart in XXXX mi Refill DEF - This message will display when DEF driving range is less than 200 miles. It is also displayed at 150 miles and 100 miles. DEF fluid top off is required with in the displayed mileage. The message will be displayed in the EVIC during vehicle start up with an updated distance mileage, and it will be accompanied by a single chime. Stating at 100 miles, remaining range will be continuously displayed while operating the vehicle. Chimes will also accompany the 75, 50 and 25 mile remaining distances. The DEF Low telltale will be on continuously until DEF fluid is topped off. • Engine Will Not Restart Refill DEF - This message will display when the DEF driving range is less than 1 mile, DEF fluid top off is required or the engine will not restart. The message will be displayed in the EVIC during vehicle start up, and it will be accompanied by a single chime. The DEF Low telltale will be illuminated continuously until DEF fluid tank is filled with a minimum of two gallons of DEF. 147