FORD 2015 F-150 - Manual (Page 185)

USING FOUR-WHEEL DRIVE
WARNING
For important information regarding
safe operation of this type of vehicle,
see General Information in the
Wheels and Tires chapter.
Note: Do not use 4H or 4L mode on dry,
hard surfaced roads. Doing so can produce
excessive noise, increase tire wear and may
damage drive components. 4H or 4L mode
is only intended for consistently slippery or
loose surfaces. Use of 4L mode on these
surfaces may produce some noise (such as
occasional clunks), but will not damage
drive components.
Note: If 4L is selected while your vehicle is
moving above 3 mph (5 km/h), the 4WD
system will not perform a shift. This is
normal and should be no reason for concern.
Refer to Shifting to or from 4L (4X4 Low)
for proper operation.
4WD Indicator Lights
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
in all circumstances. When this warning is
displayed, have your vehicle serviced by an
authorized dealer.
4X2
E181778
Momentarily illuminates when
2H is selected.
4X4 Auto
E181781
Continuously illuminates when
4A is selected (2-Speed
Automatic 4WD vehicles only).
4X4 HIGH
E181779
Continuously illuminates when
4H is selected.
4X4 LOW
E181780
Continuously illuminates when
4L is selected.
CHECK 4X4
Displays when a 4X4 fault is
present.
Using the Electronic Shift on the
Fly 4WD system
(If Equipped)
E191851
2H (4X2)
For general on-road driving. Sends power
to the rear wheels only and should be used
for street and highway driving. Provides
optimal smoothness and fuel economy at
high speeds.
4H (4X4 HIGH)
Used for extra traction such as in snow or
icy roads or in off road situations. This
mode is not intended for use on dry
pavement.
182
F-150 (), enUSA, First Printing
Four-Wheel Drive
(If Equipped)