Ford 2010 Explorer Sport Trac Owner's Manual page 29

Instrument Cluster
The message center display is located in the instrument cluster.
Your display can show up to six reconfigurable telltales at one time.
Whatever is displayed in the top left corner has the highest priority.
Info
Press the INFO button repeatedly to
cycle through the following features:
TRIP A/B
Registers the distance of individual journeys. Press and release INFO
button until the A or B trip appears in the display (this represents the
trip mode). Press and hold the RESET button to reset.
Refer to UNITS later in this section to switch the display from Metric to
English.
MILES (km) TO E
This displays an estimate of approximately how far you can drive with
the fuel remaining in your tank under normal driving conditions.
Remember to turn the ignition off when refueling to allow this feature to
correctly detect the added fuel.
29
2010 07+ Explorer Sport Trac (esp)
Owners Guide (own2002), 1st Printing
USA (fus)