2020 JEEP WRANGLER four wheel drive

positions on hard-surfaced roads will cause
increased tire wear and damage to the drive-
line components. Refer to “Shifting Proce-
dures” in this section for further information
on shifting into 4H or 4L.
The “4WD Indicator Light” (located in 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.
NOTE:
Do not attempt to shift when only the front or
rear wheels are spinning. The transfer case is
not equipped with a synchronizer, and the
front and rear driveshaft speeds must be
equal for a shift to take place. Shifting while
the front or rear wheels are spinning at differ-
ent speeds can cause damage to the transfer
case.When operating your vehicle in 4L, the en-
gine 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 dam-
age 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.Shift Positions
For additional information on the appropriate
use of each 4WD system mode position, see
the information below:
2H Position
This range is used for normal street and
highway driving on hard-surfaced roads.
Four-Wheel Drive Shift Pattern
STARTING AND OPERATING
130

To activate the system, push the bottom of
the AXLE LOCK switch once to lock the rear
axle only (the “Rear Axle Lock Indicator
Light” will illuminate), push the bottom of
the switch again to lock the front axle (the
“Front Axle Lock Indicator Light” will illumi-
nate). When the rear axle is locked, pushing
the bottom of switch again will lock or unlock
the front axle.
NOTE:
The indicator lights will flash until the axles
are fully locked or unlocked.
To unlock the axles, push the top of the AXLE
LOCK switch.
Axle lock will disengage if the vehicle is taken
out of 4L (Low) range, or the ignition switch is
turned to the OFF position.
Electronic Sway Bar Disconnect — If
Equipped
Your vehicle may be equipped with an elec-
tronic disconnecting stabilizer/sway bar. This
system allows greater front suspension travel
in off-road situations.This system is controlled by the SWAY BAR
switch located on the instrument panel (to
the left of the steering column).
Push the SWAY BAR switch to activate the
system. Push the switch again to deactivate
the system. The “Sway Bar Indicator Light”
(located in the instrument cluster) will illumi-
nate when the bar is disconnected. The
“Sway Bar Indicator Light” will flash during
activation transition, or when activation con-ditions are not met. The stabilizer/sway bar
should remain in on-road mode during nor-
mal driving conditions.
WARNING!
Do not disconnect the stabilizer bar and
drive on hardsurfaced roads or at speeds
above 18 mph (29 km/h); you may lose
control of the vehicle, which could result
in serious injury. The front stabilizer bar
enhances vehicle stability and is neces-
sary for maintaining control of the vehicle.
The system monitors vehicle speed and
will attempt to reconnect the stabilizer bar
at speeds over 18 mph (29 km/h). This is
indicated by a flashing or solid “Sway Bar
Indicator Light.” Once vehicle speed is
reduced below 14 mph (22 km/h), the
system will once again attempt to return to
off-road mode.
To disconnect the stabilizer/sway bar, shift to
either 4H or 4L and push the SWAY BAR
switch to obtain the off-road position. Refer
to “Four-Wheel Drive Operation” in this sec-
Sway Bar Switch
133

RECREATIONAL TOWING (BEHIND MOTORHOME, ETC.)
Towing This Vehicle Behind Another Vehicle
Towing Condition Wheels OFF the Ground Four-Wheel Drive Models
Flat Tow NONESee Instructions
•
Automatic transmission in PARK.
• Manual transmission in gear
(NOT in NEUTRAL [N]).
• Transfer case in NEUTRAL (N).
• Ignition in ACC position.
• Tow in forward direction.
Dolly TowFront NOT ALLOWED
Rear NOT ALLOWED
On Trailer ALL OK
NOTE:
• When towing your vehicle, always follow applicable state and provincial laws. Contact state and provincial Highway Safety offices for additional
details.
Recreational Towing — Four-Wheel Drive
Models
NOTE:
The transfer case must be shifted into NEU-
TRAL (N), automatic transmission must be in
PARK, and manual transmission must be in
gear (NOT in NEUTRAL) for recreational
towing.
CAUTION!
• DO NOT dolly tow any 4WD vehicle.
Towing with only one set of wheels on
the ground (front or rear) will cause
severe transmission and/or transfer case
damage. Tow with all four wheels either
CAUTION!
ON the ground, or OFF the ground (using
a vehicle trailer).
• Tow only in the forward direction. Towing
this vehicle backwards can cause severe
damage to the transfer case.
STARTING AND OPERATING
142

IN CASE OF EMERGENCY
HAZARD WARNING
FLASHERS................146
BULB REPLACEMENT........146
Replacement Bulbs............146
Bulb Replacement.............147
FUSES...................149
General Information.............150
Totally Integrated Power Module.....150
JACKING AND TIRE
CHANGING................154
Jack/Spare Tire Stowage..........154
Preparations For Jacking.........154
Jacking Instructions............155
Declaration Of Conformance.......157
Jack Usage Precautions..........160
JUMP STARTING............160
Preparations For Jump Start........161
Jump Starting Procedure..........162
IF YOUR ENGINE OVERHEATS . .163GEAR SELECTOR OVERRIDE . . .164
FREEING A STUCK VEHICLE . . .164
TOWING A DISABLED
VEHICLE..................165
Without The Ignition Key..........166
Four–Wheel Drive Models.........166
Tow Eye Usage................167
ENHANCED ACCIDENT RESPONSE
SYSTEM (EARS).............168
EVENT DATA RECORDER
(EDR)....................168
IN CASE OF EMERGENCY
145

Wheel Lift Or Dolly TowFrontNOT ALLOWED
RearNOT ALLOWED
FlatbedALL BEST METHOD
Proper towing or lifting equipment is required
to prevent damage to your vehicle. Use only
tow bars and other equipment designed for
this purpose, following equipment manufac-
turer’s instructions. Use of safety chains is
mandatory. Attach a tow bar or other towing
device to main structural members of the
vehicle, not to bumpers or associated brack-
ets. State and local laws regarding vehicles
under tow must be observed.
If you must use the accessories (wipers, de-
frosters, etc.) while being towed, the ignition
must be in the ON/RUN position, not the ACC
position.
If the vehicle's battery is discharged, refer to
“Gear Selector Override” in this section for
instructions on shifting the automatic trans-
mission out of PARK for towing.CAUTION!
• Do not use sling type equipment when
towing. Vehicle damage may occur.
• When securing the vehicle to a flatbed
truck, do not attach to front or rear
suspension components. Damage to
your vehicle may result from improper
towing.
• If the vehicle being towed requires steer-
ing, the ignition switch must be in the
ACC or ON/RUN mode, not in the LOCK/
OFF mode.
Without The Ignition Key
Special care must be taken when the vehicle
is towed with the ignition in the LOCK posi-
tion. The only approved method of towing
without the ignition key is with a flatbed
truck. Proper towing equipment is necessary
to prevent damage to the vehicle.
Four–Wheel Drive Models
The manufacturer recommends towing with
all wheelsOFFthe ground. Acceptable meth-
ods are to tow the vehicle on a flatbed or with
one end of the vehicle raised and the oppo-
site end on a towing dolly.
If flatbed equipment is not available and the
transfer case is operable, the vehicle may be
towed (in the forward direction, withALL
wheels on the ground),IFthe transfer case is
inNEUTRAL(N) and the transmission is in
PARK(for automatic transmissions) or in gear
(NOTinNEUTRAL, for manual transmissions).
Refer to “Recreational Towing” in “Starting
And Operating” for detailed instructions.
CAUTION!
• Front or rear wheel lifts must not be used
(if the remaining wheels are on the
ground). Internal damage to the trans-
IN CASE OF EMERGENCY
166

Mileage or time passed (whichever comes first)15,000
30,000
45,000
60,000
75,000
90,000
105,00
120,000
135,000
150,000
Or Months: 12 24 36 48 60 72 84 96 108 120
Or Kilometers:
24,000
48,000
72,000
96,000
120,000
144,000
168,000
192,000
216,000
240,000
Inspect the front suspension, tie rod ends and boot seals,
replace if necessary.XX X
Change brake fluid every 24 months if using DOT 4 brake
fluid. **XXX X X
Inspect the front and rear axle fluid, change if using your
vehicle for police, taxi, fleet, offroad or frequent trailer
towing.XXX X X
Inspect the transfer case fluid. X X X X X
Inspect the CV/Universal joints. X X X X X X X X X X
Drain the fuel filter/water separator unit. X X X X X X X X X X
Replace the fuel filter. X X X X X
Adjust parking brake on vehicles equipped with four-wheel
disc brakes.XXX X X
Replace engine air cleaner filter. X X X X X
Replace air conditioning/cabin air filter X X X X X
Replace accessory drive belt(s). X X
Flush and replace the engine coolant at 10 years or
150,000 miles (240,000 km) whichever comes first.X
Change the automatic transmission fluid and filter.X
177

WARNING!
resulting in serious injury or death. Use
only the tire and wheel sizes with load
ratings approved for your vehicle.
• Never use a tire with a smaller load index
or capacity, other than what was origi-
nally equipped on your vehicle. Using a
tire with a smaller load index could re-
sult in tire overloading and failure. You
could lose control and have a collision.
• Failure to equip your vehicle with tires
having adequate speed capability can
result in sudden tire failure and loss of
vehicle control.
CAUTION!
Replacing original tires with tires of a
different size may result in false speedom-
eter and odometer readings.
Tire Types
All Season Tires — If Equipped
All Season tires provide traction for all sea-
sons (Spring, Summer, Fall, and Winter).
Traction levels may vary between different all
season tires. All season tires can be identified
by the M+S, M&S, M/S or MS designation on
the tire sidewall. Use all season tires only in
sets of four; failure to do so may adversely
affect the safety and handling of your vehicle.
Summer Or Three Season Tires — If
Equipped
Summer tires provide traction in both wet
and dry conditions, and are not intended to
be driven in snow or on ice. If your vehicle is
equipped with Summer tires, be aware these
tires are not designed for Winter or cold
driving conditions. Install Winter tires on your
vehicle when ambient temperatures are less
than 40°F (5°C) or if roads are covered with
ice or snow. For more information, contact an
authorized dealer.
Summer tires do not contain the all season
designation or mountain/snowflake symbol
on the tire sidewall. Use Summer tires only insets of four; failure to do so may adversely
affect the safety and handling of your vehicle.
WARNING!
Do not use Summer tires in snow/ice con-
ditions. You could lose vehicle control,
resulting in severe injury or death. Driving
too fast for conditions also creates the
possibility of loss of vehicle control.
Snow Tires
Some areas of the country require the use of
snow tires during the Winter. Snow tires can
be identified by a “mountain/snowflake”
symbol on the tire sidewall.
If you need snow tires,
select tires equivalent
in size and type to the
original equipment
tires. Use snow tires
only in sets of four;
failure to do so may
adversely affect the
safety and handling of your vehicle.
197

CAUTION!
pension components, it is important
that only traction devices in good condi-
tion are used. Broken devices can cause
serious damage. Stop the vehicle imme-
diately if noise occurs that could indi-
cate device breakage. Remove the dam-
aged parts of the device before further
use.
• Install device as tightly as possible and
then retighten after driving about ½ mile
(0.8 km).
• Do not exceed 30 mph (48 km/h).
• Drive cautiously and avoid severe turns
and large bumps, especially with a
loaded vehicle.
• Do not drive for a prolonged period on
dry pavement.
• Observe the traction device manufactur-
er’s instructions on the method of instal-
lation, operating speed, and conditions
for use. Always use the suggested oper-
ating speed of the device manufacturer’s
if it is less than 30 mph (48 km/h).
• Do not use traction devices on a com-
pact spare tire.
Tire Rotation Recommendations
The tires on the front and rear of your vehicle
operate at different loads and perform differ-
ent steering, handling, and braking func-
tions. For these reasons, they wear at unequal
rates.
These effects can be reduced by timely rota-
tion of tires. The benefits of rotation are
especially worthwhile with aggressive tread
designs such as those on On/Off Road type
tires. Rotation will increase tread life, help to
maintain mud, snow, and wet traction levels,
and contribute to a smooth, quiet ride.
Refer to the “Maintenance Plan” for the
proper maintenance intervals. The reasons
for any rapid or unusual wear should be
corrected prior to rotation being performed.
The suggested rotation method is the
“rearward-cross” shown in the following
diagram.
CAUTION!
Proper operation of four-wheel drive ve-
hicles depends on tires of equal size, type
and circumference on each wheel. Any
difference in tire size can cause damage to
the transfer case. Tire rotation schedule
should be followed to balance tire wear.
STORING THE VEHICLE
If you are storing your vehicle for more than
21 days, we recommend that you take the
following steps to minimize the drain on your
vehicle's battery:
• Disconnect the negative cable from battery.
• Any time you store your vehicle or keep it
out of service (i.e., vacation) for two weeks
Tire Rotation
201