FORD 2013 F-150 v.2 - Manual (Page 222)

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.
• 4A (4X4 AUTO) - provides electronic control four-wheel drive with
power delivered to the front and rear wheels, as required, for
increased traction. This is appropriate for all on-road driving
conditions, including as dry road surfaces, but is especially useful on
wet pavement, snow, dirt, or gravel.
• 4H (4X4 HIGH) - provides electronically locked four-wheel drive
power to front and rear wheels. 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. Note:
Do not use 4H (4X4 HIGH) on dry, hard surfaced roads. Doing so can
produce excessive noise and increased tire wear. 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.
• 4L (4X4 LOW) - provides electronically locked four-wheel drive when
extra power at reduced speeds is required. This position is not
recommended for use on dry pavement. Use this position for off-road
low-speed operation or when extra power is required, such as climbing
steep grades, going through deep sand or pulling a boat out of the
water. 4L (4X4 LOW) will not engage while the vehicle is moving
above 3 mph (5 km/h); this is normal and should be no reason for
concern. Refer to Shifting to/from 4L (4X4 LOW) for proper
operation.
Four-Wheel Drive (If Equipped) 221
2013 F-150 (f12)
Owners Guide gf, 2nd Printing, October 2012
USA (fus)