If there is a transfer case tooth blockage a
message appears in the instrument cluster
display. To alleviate this condition, place
the transmission in a forward gear, move
your vehicle forward approximately 5 ft
(1.5 m), and shift the transmission back to
neutral (N) to allow the transfer case to
complete the range shift.
Note: You could hear some noise as the
system shifts or engages, this is normal.
If the system detects a fault, a warning
message appears in the instrument cluster
display. See Four-Wheel Drive –
Information Messages (page 239).
FOUR-WHEEL DRIVE MODES
TWO-WHEEL DRIVE HIGH
Two-wheel drive high is for general
on-road driving. Power is sent to the rear
wheels only.
Note: Two-wheel drive high can turn on or
off automatically based on Drive Mode
selection. See Drive Mode Control (page
309).
FOUR-WHEEL DRIVE HIGH
Four-wheel drive high provides
mechanically locked four-wheel drive
power to both the front and rear wheels
for use in off-road or winter conditions
such as deep snow, sand or mud. This
mode is not for use on dry pavement.
Note: Four-wheel drive high can turn on or
off automatically based on Drive Mode
selection. See Selecting a Drive Mode
(page 309).
FOUR-WHEEL DRIVE LOW
Four-wheel drive low provides
mechanically locked four-wheel drive
power to both the front and rear wheels
for use on low traction surfaces, but does
so with additional gearing for increased
torque multiplication. This mode is only for
off-road conditions such as deep sand,
steep slopes, or pulling heavy objects.
Note: Four-wheel drive low can turn on or
off automatically based on drive mode
selection. See Selecting a Drive Mode
(page 309).
FOUR-WHEEL DRIVE
INDICATORS
Two-wheel Drive High
Continuously illuminates when
you select four-wheel drive low.
TRANSFER CASE FLUID
CAPACITY AND
SPECIFICATION
See Transfer Case Fluid Capacity and
Specification (page 539).
238
2024 Super Duty (TFH) Canada/United States of America, enUSA, Edition date: 202307, DOM
Four-Wheel Drive (If Equipped)
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