RAM Commercial Chassis Cab 3500 2019, Owner'S Manual, Page: 278 / 607

276 STARTING AND OPERATING
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.
NOTE:
The four-wheel drive system will not allow shifts between
2WD/4WD HIGH if the front and/or rear wheels are spin -
ning (no traction). In this situation, the selected position indi -
cator light will flash and the original position indicator light
will remain ON. At this time, reduce speed and stop spin -
ning the wheels to complete the shift.
2WD Or 4WD HIGH To 4WD LOW
NOTE:
When shifting into or out of 4WD LOW some gear noise may
be heard. This noise is normal and is not detrimental to the
vehicle or occupants.
Shifting can be performed with the vehicle rolling 2 to 3 mph
(3 to 5 km/h) or completely stopped. You can use either of
the following procedures:
Preferred Procedure
1. With the engine running, slow the vehicle to 2 to 3 mph (3
to 5 km/h).
2. Shift the transmission into NEUTRAL.
3. While still rolling, push the desired position on the
transfer case control switch.