2015 Ford Fusion Energi Owner Manual Printing 1 - Page 259

Maintenance Selecting EV Now mode when your vehicle is in the engine management mode will suspend the engine management mode for as long as you continue driving your vehicle. The engine management mode will resume the next time you start your vehicle. Changing the engine oil and resetting the oil life monitoring system will suspend the engine management mode. Note: If the level is at the MIN mark, below the MIN mark, or empty, add prediluted coolant immediately. See Adding Engine Coolant in this chapter. The coolant concentration should be maintained within 48% to 50%, which equates to a freeze point between -30°F (-34°C) and -34°F (-37°C). Note: For best results, coolant concentration should be tested with a refractometer such as Robinair Coolant and Battery Refractometer 75240. We do not recommend the use of hydrometers or coolant test strips for measuring coolant concentrations. Note: Automotive fluids are not interchangeable. Do not use engine coolant or antifreeze or windshield washer fluid outside of its specified function and vehicle location. OIL CHANGE INDICATOR RESET To reset the oil monitoring system after an oil change, See General Information (page 94). ENGINE COOLANT CHECK Engine Coolant and Inverter System Controller Coolant Your vehicle is equipped with two separate cooling systems. One is for cooling the engine and one is for cooling the inverter system controller that is specific to the hybrid operating system. The two systems operate similarly, with the inverter system controller cooling system generally operating at a lower temperature and pressure. Checking the Inverter System Controller Coolant When the engine is cold, check the concentration and level of the inverter system controller coolant at the intervals listed in the scheduled maintenance information. See Scheduled Maintenance (page 465). Note: Make sure that the level is between the MIN and MAX marks on the inverter system controller coolant reservoir. Note: Coolant expands when it is hot. The level may extend beyond the MAX mark. Note: If the level is at the MIN mark, below the MIN mark, or empty, add prediluted coolant immediately. See Adding Inverter System Controller Coolant in this chapter. The coolant concentration should be maintained within 48% to 50%, which equates to a freeze point between -30°F (-34°C) and -34°F (-37°C). Checking the Engine Coolant When the engine is cold, check the concentration and level of the engine coolant at the intervals listed in the scheduled maintenance information. See Scheduled Maintenance (page 465). Note: Make sure that the level is between the MIN and MAX marks on the engine coolant reservoir. Note: Coolant expands when it is hot. The level may extend beyond the MAX mark. 256 Fusion/Mondeo (CC7), enUSA