Ford F-150 Owner's Manual page 323

Note: Momentarily releasing the accelerator pedal while performing a
shift will improve engagement/disengagement times.
Note: Do not perform this operation if the rear wheels are slipping.
Note: Some noise may be heard as the system shifts or engages; this is
normal.
Note: 4X4 high mode is not intended for use on dry pavement.
Shifting to/from 4L (4X4 low)
1. Bring the vehicle to a speed of 3 mph (5 km/h) or less.
2. Place the transmission in N (Neutral).
3. Move the 4WD control to the desired position.
The message center will display 4X4 SHIFT IN PROGRESS during the
shift. The message center will then display the system mode selected. If
any of the above shift conditions are not met, the shift will not occur and
the message center will display information guiding the driver through
the proper shifting procedures.
If SHIFT DELAYED PULL FORWARD is displayed in the message
center, transfer case gear tooth blockage is present. To alleviate this
condition, place the transmission in a forward gear, move the vehicle
forward approximately 5 feet (1.5 m), and shift the transmission back to
neutral to allow the transfer case to complete the range shift.
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 2-Speed Automatic 4WD System (If Equipped)
This system includes an
electronically controlled transfer
case with a high capacity clutch.
The system is interactive with the
road, continually monitoring and
adjusting torque delivery to the
front and rear wheels to optimize
traction.
• 2H (4X2) - delivers power to the
rear wheels only. This mode is
appropriate for normal on-road
driving on dry pavement and provides best fuel economy and
smoothness.
2012 F-150 (f12)
Owners Guide, 2nd Printing
USA (fus)
Driving
323