Jeep WRANGLER 2020 Owner's Manual page 232

230 STARTING AND OPERATING
4L
Four-Wheel Drive Low Range — This range
provides low speed four-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 position (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 positions on
hard-surfaced roads will cause increased tire
wear and damage 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-wheel 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 approximately 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 of 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 tendency to exceed safe
turning and stopping speeds. Do not go faster
than road conditions permit.
Shifting Procedures
2H To 4H Auto Or 4H Auto To 2H
Shifting between 2H and 4H Auto can be made
with the vehicle stopped or in motion. The
preferred shifting speed would be 0 to 45 mph
(72 km/h). With the vehicle in motion, the
transfer case will engage/disengage faster if you
momentarily release the accelerator pedal after
completing the shift. Do not accelerate while
shifting the transfer case. Apply a constant force
when shifting the transfer case lever.
2H/4H Auto To 4H PT Or 4H PT To 2H/4H Auto
Shifting between 2H/4H AUTO to 4H PT can be
made with the vehicle stopped or in motion. The
preferred shifting speed would be 0 to 45 mph
(72 km/h). With the vehicle in motion, the
transfer case will engage/disengage faster if you
momentarily release the accelerator pedal after
completing the shift. Do not accelerate while
shifting the transfer case. Apply a constant force
when shifting the transfer case lever.