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STARTING AND OPERATING 335
4L
Four-Wheel Drive Low Range — This range provides low
speed f
our-wheel drive. It maximizes torque to the front
driveshaft, forcing the front and rear wheels to rotate at the
same speed. This range provides additional traction and
maximum pulling power for loose, slippery road surfaces
only. Do not exceed 25
mph (40 km/h).
This transfer case is designed to be driven in the two-wheel
drive p
osition (2WD) or four-wheel drive position (4WD
AUTO) for normal street and highway conditions on dry
hard surfaced roads. Driving the vehicle in 2WD will have
greater fuel economy benefits as the front axle is not engaged
in 2WD.
For variable driving conditions, the 4WD AUTO mode can
be used
. In this mode, the front axle is engaged, but the
vehicle's power is sent to the rear wheels. Four-wheel drive
will be automatically engaged when the vehicle senses a loss
of traction. Because the front axle is engaged, this mode will
result in lower fuel economy than the 2WD mode.
In the event that additional traction is required, the transfer
case 4H
and 4L positions can be used to lock the front and
rear driveshafts together, forcing the front and rear wheels to
rotate at the same speed. The 4H and 4L positions are
intended for loose, slippery road surfaces only and not
intended for normal driving. Driving in the 4H and 4L posi
-
tions on hard-surfaced roads will cause increased tire wear
a
nd dam
age to the driveline components. Refer to “Shifting
Procedures” in this section for further information on
shifting into 4H or 4L.
The instrument cluster alerts the driver that the vehicle is in
four-whe
el drive, and the front and rear driveshafts are
locked together. The light will illuminate when the transfer
case is shifted into the 4H position.
When operating your vehicle in 4L, the engine speed will be
approxi
mately three times (four times for Rubicon models)
that of the 2H or 4H positions at a given road speed. Take
care not to overspeed the engine.
Proper operation of four-wheel drive vehicles depends on
tires o
f equal size, type, and circumference on each wheel.
Any difference will adversely affect shifting and cause
damage to the transfer case.
Because four-wheel drive provides improved traction, there
is a te
ndency to exceed safe turning and stopping speeds. Do
not go faster than road conditions permit.
5
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