FORD 2011 F-150 v.3 - Manual (Page 316)

Note: Some noise may be heard as the system shifts or engages; this is
normal.
Note: 4x4 low mode is not intended for use on dry pavement.
Using the all-wheel drive (AWD) system
(if equipped, Harley-Davidson™ only)
This system includes an electronically controlled transfer case. The
system is interactive with the road, continually monitoring and adjusting
torque delivery to the front and rear wheels to optimize traction.
2H (4X2) - Power to the rear
wheels only; used for street and
highway driving. Provides optimal
smoothness and fuel economy at
high speeds. The message center
will momentarily display “4X2” when
this mode is selected.
AWD (4X4 auto) - Power delivered
to all four wheels, as required, for
increased traction.
4H (4X4 high) - Used for extra
traction on snow covered or icy roads and in off-road situations. 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 deep sand. The message center will display “4X4 High”
when this mode is selected.
Note: Do not use 4H (4X4 high) on dry, hard surfaced roads. Doing so
will produce excessive noise, increased tire wear and may damage drive
components. 4H (4X4 High) is only intended for consistently slippery or
loose surfaces. Use of 4H (4X4 High) on these surfaces may produce
some noise (such as occasional clunks), but will not damage drive
components.
Shifting between 2H (4X2) and AWD (auto) or 4H (high)
Move the control from the 2H position to the AWD or 4H position at a
stop or while driving at any forward speed. The message center may
display
Љ4X4 SHIFT IN PROGRESSЉ during the system shift. The message
center will then display “AWD” if AWD has been selected or “4X4 high” if
4H is selected. The message center will momentarily display “4X2” if 2H
has been selected.
Note: 4X4 high mode is not intended for use on dry pavement
Driving
316
2011 F-150 (f12)
Owners Guide, 3rd Printing
USA (fus)