Ford Expedition 2008 Owner's Manual page 135

Driver Controls
9. Press the RESET control to start
the compass calibration function.
10. Slowly drive the vehicle in a
circle (less than 3 mph [5 km/h])
until the CIRCLE SLOWLY TO
CALIBRATE display changes to CALIBRATION COMPLETED. It will take
up to five circles to complete calibration.
11. The compass is now calibrated.
Note: If the RESET control is
pressed or 3 minutes has expired,
the display will go back to the INFO
menu and will show CAL instead of
the compass heading until the compass is calibrated.
Distance to empty (DTE)
Selecting this function from the
INFO menu estimates 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.
The DTE function will display XXX MILES TO E FUEL LEVEL
LOW and sound a tone for one second when you have
approximately 50 miles (80 km) to empty. If you RESET this warning
message, this display and tone will return after 10 minutes.
DTE is calculated using a running average fuel economy, which is based
on your recent driving history of 500 miles (800 km). This value is not
the same as the average fuel economy display. The running average fuel
economy is reinitialized to a factory default value if the battery is
disconnected.
Average fuel economy (AFE)
Select this function from the INFO
menu to display your average fuel
economy in miles/gallon or
liters/100 km.
135
2008 Expedition (exd)
Owners Guide (post-2002-fmt)
USA (fus)