User Manual - Page 314

For RAM 2019 3500.

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312 STARTING AND OPERATING
NOTE:
Do not attempt to make a shift while only the front or rear
wheels are spinning. This could cause damage to driveline
components.
When operating your vehicle in 4WD LOW, the engine
speed is approximately three times that of the 2WD or 4WD
HIGH positions at a given road speed. Take care not to over-
speed the engine and do not exceed 25 mph (40 km/h).
Proper operation of four-wheel drive vehicles depends on
tires of equal size, type and circumference on each wheel.
Any difference in tire size can cause damage to the drive-
train.
Because four-wheel drive provides improved traction, there
is a tendency to exceed safe turning and stopping speeds. Do
not go faster than road conditions permit.
Shifting Procedure
NOTE:
If any of the requirements to select a new transfer case
position have not been met, the transfer case will not shift.
The position indicator light for the previous position will
remain ON and the newly selected position indicator light
will continue to flash until all the requirements for the
selected position have been met.
If all the requirements to select a new transfer case position
have been met, the current position indicator light will
turn OFF, the selected position indicator light will flash
until the transfer case completes the shift. When the shift is
complete, the position indicator light for the selected posi-
tion will stop flashing and remain ON.
2WD To 4WD HIGH
Push the desired position on the 4WD control switch to shift
the transfercase. Shifts between 2WD and 4WD HIGH can be
done with the vehicle stopped or in motion. With the vehicle
in motion, the transfer case will engage/disengage faster if
you momentarily release the accelerator pedal after turning
the control switch. If the vehicle is stopped, the ignition
switch must be in the ON position with the engine either
running or off. This shift cannot be completed if the ignition
switch is in the ACC position.
WARNING!
Always engage the parking brake when powering down the
vehicle if the “SVC 4WD Warning Light” is illuminated.
Not engaging the parking brake may allow the vehicle to
roll which may cause personal injury or death.
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