Jeep 2012 Liberty - Owner Manual - Manual (Page 339)

Shifting Procedures
NOTE: If any of the requirements to select a new
transfer case position have not been met, the transfer case
will not shift, the 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. To retry a shift, move
the transfer case switch back to the original position,
make certain all shift requirements have been met, wait
five seconds, and try the shift again.
2WD To 4WD Lock
Move the transfer case switch to the desired position.
Shifts between 2WD and 4WD LOCK 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 mov-
ing the transfer case switch. If the vehicle is stopped, the
ignition switch must be in the ON position with the
engine either OFF or RUNNING. 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 and 4WD LOCK if the rear wheels
are spinning (no traction). In this situation, the selected
position indicator light will flash and the original posi-
tion indicator light will remain ON. At this time, reduce
speed and stop spinning the wheels to complete the shift.
There may be a delay up to 10 seconds for the shift to
complete after the wheels have stopped spinning.
Delayed shifting out of 4WD LOCK may be experienced
due to uneven tire wear, low tire pressure, or excessive
loading.
4WD Lock To 4WD Low
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 its occupants.
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