User Manual - Page 339

For 2019 Wrangler.

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STARTING AND OPERATING 337
4H Part Time/4H Auto To 4L Or 4L To 4H Part Time/4H Auto
With the vehicle rolling at 2 to 3 mph (3 to 5 km/h), shift an
automat
ic transmission into NEUTRAL (N), or press the
clutch pedal on a manual transmission. While the vehicle is
coasting at 2 to 3
mph (3 to 5 km/h), shift the transfer case
lever f
irmly to the desired position. Do not pause with the
transfer case in N (Neutral). Once the shift is completed,
place the automatic transmission into DRIVE or release the
clutch pedal on a manual transmission.
NOTE:
Shifting into or out of 4L is possible with the vehicle
complet
ely stopped; however, difficulty may occur due to
the mating teeth not being properly aligned. Several
attempts may be required for clutch teeth alignment and
shift completion to occur. The preferred method is with the
vehicle rolling at 2 to 3
mph (3 to 5 km/h). Avoid attempting
to engage
or disengage 4L with the vehicle moving faster
than 2 to 3
mph (3 to 5 km/h).
Trac-Lok Rear Axle — If Equipped
The Trac-Lok rear axle provides a constant driving force to
both rear wheels and reduces wheel spin caused by the loss
of traction at one driving wheel. If traction differs between
the two rear wheels, the differential automatically propor
-
tions the usable torque by providing more torque to the
wh
eel th
at has traction.
Trac-Lok is especially helpful during slippery driving condi-
tions. With both rear wheels on a slippery surface, a slight
a
pplica
tion of the accelerator will supply maximum traction.
WARNING!
Failure to engage a transfer case position completely can
cause t
ransfer case damage or loss of power and vehicle
control. You could have a collision. Do not drive the
vehicle unless the transfer case is fully engaged.
WARNING!
On vehicles equipped with a limited-slip differential,
never ru
n the engine with one rear wheel off the ground.
The vehicle may drive through the rear wheel remaining
on the ground and cause you to lose control of your
vehicle.
5
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