Ford Expedition Owner's Manual page 99

Stability Control System
Displays when the AdvanceTrac /Traction control is active. If
the light remains on, have the system serviced immediately.
Stability Control System Off
Illuminates when AdvanceTrac /Traction control has been
disabled by the driver.
Transmission Tow/Haul
Illuminates when the Tow/Haul feature has been activated.
Refer to the Transmission chapter for transmission function
and operation. If the light flashes steadily, have the system
serviced immediately, damage to the transmission could occur.
4X4
Illuminates when four-wheel drive high is engaged. If the light
fails to display when the ignition is turned on, or remains on,
have the system serviced immediately by your authorized dealer.
4X4 LOW
Illuminates when four-wheel drive low is engaged. If the light fails
to display when the ignition is turned on, or remains on, have the
system serviced immediately by your authorized dealer.
4X4 AUTO
Displays when using the 4x4 system.
2013 Expedition (exd)
Owners Guide gf, 1st Printing
USA (fus)
Instrument Cluster 99