Ram 2021 3500 dually truck 2021 RAM 3500

User Manual - Page 158

For 2021 RAM 3500.

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156 STARTING AND OPERATING
N (Neutral)
N (Neutral) — This range disengages both the front
an
d rear driveshafts from the powertrain. To be
used for flat towing behind another vehicle
Ú page 222.
4L
Four-Wheel Drive Low Range — This range locks
th
e front and rear driveshafts together forcing the
front and rear wheels to rotate at the same speed.
Additional traction and maximum pulling power for
loose, slippery road surfaces only. Do not exceed
25
mph (40 km/h).
This transfer case is intended to be driven in the
2
H position for normal street and highway
conditions such as dry, hard surfaced roads.
When additional traction is required, the 4H and 4L
pos
itions can be used to lock the front and rear
driveshafts together and force the front and rear
wheels to rotate at the same speed. This is
accomplished by simply moving the gear selector
to the desired positions once the appropriate
speed and gear requirements are met. Refer to
“Shifting Procedure – Manually Shifted Transfer
Case” in this section for further information.
The 4H and 4L positions are intended for loose,
sl
ippery road surfaces only. Driving in the 4H and
4L positions on dry, hard surfaced roads may
cause increased tire wear and damage to the
driveline components.
The “Transfer Case Position Indicator Light” in the
in
strument cluster will alert the driver that the
vehicle is in four-wheel drive and that the front and
rear driveshafts are locked together. This light will
illuminate when the transfer case is shifted into
either the 4H or 4L position. There is no light for the
2H or NEUTRAL positions on some models.
When operating your vehicle in 4L, the engine
sp
eed is approximately three times that of the 2H
or 4H positions at a given road speed. Take care
not to overspeed the engine and do not exceed
25
mph (40 km/h).
Proper operation of four-wheel drive vehicles
de
pends on tires of equal size, type and
circumference on each wheel. Any difference will
adversely affect shifting and can cause damage to
the drivetrain.
NOTE:
Do not attempt to make a shift while only the front
or
rear wheels are spinning, as this can cause
damage to driveline components.
Because four-wheel drive provides improved
tr
action, there is a tendency to exceed safe turning
and stopping speeds. Do not go faster than road
conditions permit.
NOTE:
Delayed shifts out of four-wheel drive may be expe-
rienced due to uneven tire wear, low or uneven tire
p
r
essures, excessive vehicle loading, or cold
temperatures.
Shifting Procedure — Manually Shifted
Transfer Case
2H TO 4H
Shifting between 2H and 4H can be made with the
vehicle stopped or in motion. If the vehicle is in
motion, shifts can be made up to 55
mph (88 km/h).
With the vehicle in motion, the transfer case will
engage/disengage faster if you momentarily release
the accelerator pedal after completing the shift.
Apply a constant force when shifting the transfer
case lever.
2H OR 4H TO 4L
NOTE:
When shifting into or out of 4L some gear noise
ma
y be heard. This noise is normal and is not detri-
mental to the vehicle or occupants.
WARNING!
You or others could be injured or killed if you
leave the vehicle unattended with the transfer
case in the N (Neutral) position without first fully
engaging the parking brake. The transfer case N
(Neutral) position disengages both the front and
rear drive shafts from the powertrain and will
allow the vehicle to roll, even if the transmission
is in PARK. The parking brake should always be
applied when the driver is not in the vehicle.
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