Ford Expedition Owner's Manual page 268

Driving
• 4X4 – Illuminates when 4X4 is
selected.
• 4X4 LOW - Illuminates when 4L
is selected.
• CHECK 4X4 (if equipped) -
Displays when a 4X4 fault is
present.
Note: When a 4x4 system fault is present, the system will typically
remain in whichever 4X4 mode was selected prior to the fault condition
occurring. It will not default to 4X2 mode in all circumstances. When this
warning is displayed, have your vehicle serviced by an authorized dealer.
Positions of the Control Trac system
The Control Trac system functions
in four modes:
• 2H (4X2) delivers power to the
rear wheels only. The message
center will momentarily display
"4x2" when this mode is selected.
This is appropriate for normal
on-road driving on dry pavement
and provides best fuel economy.
• 4A (4X4 AUTO) provides
electronic control four-wheel drive with power delivered to all four
wheels, as required, for increased traction. The message center will
display "4X4 AUTO" when this position is selected. This is appropriate
for all on-road driving conditions, such as dry road surfaces, wet
pavement, snow or gravel.
• 4H (4X4) provides electronically locked four-wheel drive power to
front and rear wheels. The message center will display "4X4" when
this position is selected. This position is not recommended for use on
dry pavement. This position is only intended for severe winter or
off-road conditions, such as deep snow, ice or shallow sand.
268
2012 Expedition (exd)
Owners Guide, 1st Printing
USA (fus)
4x4
4x4
LOW