2015 Ford Fusion Energi Owner Manual Printing 1 - Page 156
2015 Ford Fusion Energi Manual
Page 156 highlights
Unique Driving Characteristics Note: Cold temperatures will affect the engine warm up time and the low engine use mode may operate more frequently. Note: An oil change is not required but gives you the option of not running a low engine use cycle. Resetting the oil life monitoring system will suspend the low engine use mode. Frequently asked questions Question Answer What are the series of clicks from the cargo The high voltage battery is electrically isolarea when I first turn the key in the ignition? ated from the rest of the vehicle when the key is off. When you turn the key to on, high voltage contactors inside the battery are closed to make the electricity available to the motor/generator and enable the vehicle to drive. The clicks are the sound of these contactors as they close and open during start up and shut down. Why does the engine sometimes start at key-on? The vehicle's computer will determine if an engine start is required at key-on. Silent key start will start the engine if it is necessary for cabin heating, windshield defrost, or if the outside temperature is low. (For Fusion Energi vehicles, the engine may not be required to operate these functions.) There are several reasons the engine stays on for an extended amount of time when you first start it. One common reason is to ensure that the emissions components are warm enough to minimize tailpipe emissions. As the climate gets cooler, this engine-on time is extended. The engine is required to turn on above this speed to protect the transmission hardware. In order to ensure that the climate control system can begin heating the cabin or defrosting the windshield as soon as a driver requests it, the engine coolant temperature has to be kept sufficiently hot. Keeping the engine on is required to maintain the correct coolant temperature. Why does it take a long time before the engine shuts down? Why does my engine never shut down above 85 mph (137 km/h) Why does my engine stay on when it is extremely cold outside? 153 Fusion/Mondeo (CC7), enUSA