If there is a significant difference between
the size of the spare tire and the remaining
tires, you could have limited four-wheel
drive functionality, added noise, discomfort
and driveline damage.
Due to normal tire wear, your spare tire is
not necessarily the same size as your
on-road tires, which makes your spare tire
a dissimilar size. Use the spare tire on a
limited basis only.
When driving with a dissimilar wheel and
tire assembly do not:
• Exceed 50 mph (80 km/h) when
operating in a four-wheel drive mode.
• Select a four-wheel drive mode unless
the vehicle is stationary.
• Use a four-wheel drive mode on dry
pavement.
You could have limited four-wheel drive
functionality when driving with a dissimilar
wheel and tire assembly, especially when
driving in a mechanically locked four-wheel
drive mode. You can experience the
following:
• Additional noise from the transfer case
or other drive components.
• Difficulty shifting in and out of a
mechanically locked four-wheel drive
mode.
• Driveline component damage.
Note: When driving with a spare tire, do not
switch on four-wheel drive mode unless you
need to get your vehicle unstuck.
Immediately after getting your vehicle
unstuck, shift to 2H by performing the
following steps:
1. Come to a stop on a flat, horizontal
surface.
2. Shift the transmission to park (P) for
automatic transmissions and neutral
(N) for manual transmissions.
3. Switch to two-wheel drive mode.
4. Shift the transmission to reverse (R).
5. Shift the transmission to drive (D) for
automatic transmissions and to first
gear for manual transmissions to make
sure the transfer case system is not
trapped in place.
Mechanical Shift Blocking
On vehicles with an electronic
shift-on-the-fly transfer case, the transfer
case distributes torque to the front wheels
by mechanically interlocking the front and
rear driveshafts together. Various external
factors can affect shifting performance of
this type of system including, but not
limited to:
• Vehicle acceleration.
• Dissimilar tire sizes.
• High steering input.
For vehicles with an electronic
shift-on-the-fly transfer case, when
shifting into two-wheel drive high (2H) on
dry, hard surfaced roads, we recommend
you preform the following procedure to
reduce the likelihood of a mechanical shift
block:
1. While driving straight, come to a
complete stop on a flat, horizontal
surface.
2. Shift the transmission into park (P) for
automatic transmissions or press the
clutch for vehicles with a manual
transmission.
3. Select 2H and wait for the 2H LED to
become solid.
4. Shift the transmission into reverse (R)
for automatic transmissions or select
reverse (R) and release the clutch for
vehicles with a manual transmission.
Allow the vehicle to roll back
approximately 3 ft (1 m) and press the
brake.
201
2024 Ranger (TRD) Canada/United States of America, enUSA, Edition date: 202304, DOM
Four-Wheel Drive
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