Ford 2006 Expedition Owner's Manual page 421

Check fuel cap (if equipped):
Illuminates when the fuel cap may
not be properly installed. Continued
driving with this light on may cause
the Service engine soon warning
light to come on. Refer to Fuel
filler cap in the Maintenance and Specifications chapter.
Low washer fluid (if equipped):
Illuminates when the windshield
washer fluid is low.
Speed control: Illuminates when
the speed control is activated. Turns
off when the speed control system
is deactivated.
O/D off: Illuminates when the
overdrive function of the
transmission has been turned off,
refer to the Driving chapter. If the
light does not illuminate, have the transmission serviced soon, or damage
may occur.
AdvanceTrac (if equipped):
Illuminates when the AdvanceTrac
with RSC system is active. If the
light remains on, have the system
serviced immediately, refer to the
Driving chapter for more
information.
Four wheel drive low (if
equipped): Illuminates when
four-wheel drive low is engaged. If
the light fails to illuminate when the
ignition is turned ON, or remains on, have the system serviced
immediately by your authorized dealer.
2006 Expedition (exd)
Owners Guide (post-2002-fmt)
USA (fus)
Instrument Cluster
O/D
OFF
4x4
LOW
13