automatic transmission JEEP WRANGLER 2021 Owner handbook (in English)

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

CAUTION!
• Automatic transmissions must be
placed in PARK for recreational towing.
• Manual transmissions must be placed in
gear (not in Neutral) for recreational
towing.
• Before recreational towing, perform the
procedure outlined under “Shifting Into
NEUTRAL (N)” to be certain that the
transfer case is fully in NEUTRAL (N).
Otherwise, internal damage will result.
• Towing this vehicle in violation of the
above requirements can cause severe
transmission and/or transfer case dam-
age. Damage from improper towing is
not covered under the New Vehicle Lim-
ited Warranty.
• Do not use a bumper-mounted clamp-on
tow bar on your vehicle. The bumper
face bar will be damaged.
Shifting Into NEUTRAL (N)
Use the following procedure to prepare your
vehicle for recreational towing.
WARNING!
You or others could be injured or killed if
you leave the vehicle unattended with the
transfer case in the NEUTRAL (N) position
without first fully engaging the parking
brake. The transfer case NEUTRAL (N)
position disengages both the front and rear
driveshafts from the powertrain, and will
allow the vehicle to roll, even if the auto-
matic transmission is in PARK (or manual
transmission is in gear). The parking brake
should always be applied when the driver
is not in the vehicle.
CAUTION!
It is necessary to follow these steps to be
certain that the transfer case is fully in
NEUTRAL (N) before recreational towing
to prevent damage to internal parts.
1. Bring the vehicle to a complete stop on
level ground.
2. Press and hold the brake pedal.3. Shift the automatic transmission into
NEUTRAL or depress the clutch pedal on
a manual transmission.
4. Turn the engine OFF.
5. Shift the transfer case lever into NEU-
TRAL (N).
6. Start the engine.
7. Shift the transmission into REVERSE.
8. Release the brake pedal (and clutch pedal
on manual transmissions) for five seconds
and ensure that there is no vehicle
movement.
9. Repeat steps seven and eight with auto-
matic transmission in DRIVE or manual
transmission in first gear.
10. Turn the engine OFF and leave the igni-
tion in the unlocked ACC position.
11. Firmly apply the parking brake.
12. Shift the transmission into PARK or
place manual transmission in gear (NOT
in NEUTRAL).
143

CAUTION!
Damage to the transmission may occur if
the transmission is shifted into PARK with
the transfer case in NEUTRAL (N) and the
engine running. With the transfer case in
NEUTRAL (N) ensure that the engine is
OFF before shifting the transmission into
PARK.
13. Attach the vehicle to the tow vehicle
using a suitable tow bar.
14. Release the parking brake.
15. Disconnect the negative battery cable,
and secure it away from the negative
battery post.
Shifting Out of NEUTRAL (N)
Use the following procedure to prepare your
vehicle for normal usage.
1. Bring the vehicle to a complete stop,
leaving it connected to the tow vehicle.
2. Firmly apply the parking brake.
3. Reconnect the negative battery cable.
4. Turn the ignition to the LOCK position.
5. Turn the ignition to the ON/RUN position,
but do not start the engine.
6. Press and hold the brake pedal.
7. Shift the transmission into NEUTRAL.8. Shift the transfer case lever to the desired
position.
NOTE:
When shifting the transfer case out of
NEUTRAL (N), the engine should remain
OFF to avoid gear clash.
9. Shift the automatic transmission into
PARK, or place manual transmission in
NEUTRAL.
10. Release the brake pedal.
11. Disconnect vehicle from the tow vehicle.
12. Start the engine.
13. Press and hold the brake pedal.
14. Release the parking brake.
15. Shift the transmission into gear, release
the brake pedal (and clutch pedal on
manual transmissions), and check that
the vehicle operates normally.
STARTING AND OPERATING
144

HAZARD WARNING
FLASHERS
The Hazard Warning flasher switch is located
on the instrument panel below the climate
controls.
Push the switch to turn on the
Hazard Warning flasher. When the
switch is activated, all directionalturn signals will flash on and off to warn
oncoming traffic of an emergency. Push the
switch a second time to turn off the Hazard
Warning flashers.
This is an emergency warning system and it
should not be used when the vehicle is in
motion. Use it when your vehicle is disabled
and it is creating a safety hazard for other
motorists.When you must leave the vehicle to seek
assistance, the Hazard Warning flashers will
continue to operate even though the ignition
is placed in the OFF position.
NOTE:
With extended use the Hazard Warning flash-
ers may wear down your battery.
BULB REPLACEMENT
Replacement Bulbs
Interior Lights
Bulb Type
Bulb Number
Automatic Transmission Indicator Lamp 658
Courtesy Lights, Under Dash (1)906
Heater Control Lamps (2)194
Rocker Switch Indicator Lamp (Rear Window Defogger) **
Soundbar Dome Lamp912
** Bulbs only available from authorized dealer.
IN CASE OF EMERGENCY
146

4. Shift the automatic transmission into
PARK, or a manual transmission into
REVERSE.
5. Turn the ignition to LOCK.
6. Block both the front and rear of the wheel
diagonally opposite of the jacking posi-
tion. For example, if changing the right
front tire, block the left rear wheel.
NOTE:
Passengers should not remain in the vehicle
when the vehicle is being jacked.Jacking Instructions
WARNING!
Carefully follow these tire changing warn-
ings to help prevent personal injury or
damage to your vehicle:
• Always park on a firm, level surface as
far from the edge of the roadway as
possible before raising the vehicle.
• Turn on the Hazard Warning flasher.
• Block the wheel diagonally opposite the
wheel to be raised.
• Set the parking brake firmly and set an
automatic transmission in PARK; a
manual transmission in REVERSE.
• Never start or run the engine with the
vehicle on a jack.
• Do not let anyone sit in the vehicle when
it is on a jack.
• Do not get under the vehicle when it is
on a jack. If you need to get under a
raised vehicle, take it to a service center
where it can be raised on a lift.
• Only use the jack in the positions indi-
cated and for lifting this vehicle during a
tire change.
WARNING!
• If working on or near a roadway, be
extremely careful of motor traffic.
• To assure that spare tires, flat or in-
flated, are securely stowed, spares must
be stowed with the valve stem facing the
ground.
Wheel BlockedWarning Label
155

GEAR SELECTOR OVERRIDE
If a malfunction occurs and the gear selector
cannot be moved out of the PARK position,
you can use the following procedure to tem-
porarily move the gear selector:
1. Turn the engine OFF.
2. Firmly apply the parking brake.3. Using a small screwdriver or similar tool,
remove the gear selector override access
cover (located to the right of the gear
selector).
4. Turn the ignition to the ACC or ON/RUN
position, but do not start the engine.
5. Press and maintain firm pressure on the
brake pedal.
6. Insert the screwdriver or similar tool into
the access port, and push and hold the
override release lever down.
7. Move the gear selector to the NEUTRAL
position.
8. The vehicle may then be started in
NEUTRAL.
9. Reinstall the gear selector override access
cover.
FREEING A STUCK VEHICLE
If your vehicle becomes stuck in mud, sand
or snow, it can often be moved using a rock-
ing motion. Turn the steering wheel right and
left to clear the area around the front wheels.
Then, shift back and forth between DRIVE
and REVERSE (with automatic transmission)
or SECOND GEAR and REVERSE (with
manual transmission), while gently pressing
the accelerator. Use the least amount of ac-
celerator pedal pressure that will maintain
the rocking motion, without spinning the
wheels or racing the engine.
CAUTION!
Racing the engine or spinning the wheels
may lead to transmission overheating and
failure. Allow the engine to idle with the
transmission in NEUTRAL for at least one
minute after every five rocking-motion
cycles. This will minimize overheating and
reduce the risk of clutch or transmission
failure during prolonged efforts to free a
stuck vehicle.Gear Selector Override Location
IN CASE OF EMERGENCY
164

NOTE:
Push the "ESC Off" switch, to place the Elec-
tronic Stability Control (ESC) system in "Par-
tial Off" mode, before rocking the vehicle.
Refer to “Electronic Brake Control System”
in “Safety” in your Owner’s Manual for fur-
ther details. Once the vehicle has been freed,
push the "ESC Off" switch again to restore
"ESC On" mode.
WARNING!
Fast spinning tires can be dangerous.
Forces generated by excessive wheel
speeds may cause damage, or even failure,
of the axle and tires. A tire could explode
and injure someone. Do not spin your ve-
WARNING!
hicle's wheels faster than 30 mph
(48 km/h) or for longer than 30 seconds
continuously without stopping when you
are stuck and do not let anyone near a
spinning wheel, no matter what the speed.
CAUTION!
• When “rocking” a stuck vehicle by shift-
ing between DRIVE/SECOND GEAR and
REVERSE, do not spin the wheels faster
than 15 mph (24 km/h), or drivetrain
damage may result.
• Revving the engine or spinning the
wheels too fast may lead to transmission
CAUTION!
overheating and failure. It can also dam-
age the tires. Do not spin the wheels
above 30 mph (48 km/h) while in gear
(no transmission shifting occurring).
TOWING A DISABLED
VEHICLE
This section describes procedures for towing
a disabled vehicle using a commercial towing
service. If the transmission and drivetrain are
operable, disabled vehicles may also be
towed as described under “Recreational Tow-
ing” in the “Starting And Operating” section.
Towing Condition Wheels OFF The Ground 4WD MODELS
Flat Tow NONESee instructions under “Recreational Towing” in
“Starting And Operating”.
• Automatic Transmission inPARK
• Manual Transmission in gear (NOTin NEUTRAL)
• Transfer Case inNEUTRAL
• Ignition in ACC or ON/RUN position
• Tow inforwarddirection
165

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

SERVICING AND MAINTENANCE
SCHEDULED SERVICING......170
Scheduled Servicing — Gasoline
Engine....................170
Scheduled Servicing — Diesel Engine. .175
ENGINE COMPARTMENT......180
3.6L Engine.................180
2.8L Diesel Engine.............181
Checking Oil Level — Gasoline Engine. .182
Checking Oil Level — Diesel Engine . . .182
Cooling System...............182
Adding Washer Fluid............183
Brake System................183
Manual Transmission...........184Automatic Transmission..........184
Maintenance-Free Battery........186
Air Conditioner Maintenance.......186
DEALER SERVICE...........189
Windshield Wiper Blades.........189
RAISING THE VEHICLE........192
TIRES....................193
Tires — General Information.......193
Tire Types...................197
Spare Tires — If Equipped........198
Wheel And Wheel Trim Care.......199Tire Chains (Traction Devices).......200
Tire Rotation Recommendations.....201
STORING THE VEHICLE.......201
BODYWORK...............202
Body And Underbody Maintenance . . .202
Preserving The Bodywork.........202
INTERIORS...............204
Seats And Fabric Parts...........204
Plastic And Coated Parts..........205
Leather Parts.................205
Glass Surfaces...............206
SERVICING AND MAINTENANCE
169

SCHEDULED SERVICING
Scheduled Servicing — Gasoline Engine
The scheduled services listed in this manual
must be done at the times or mileages speci-
fied to protect your vehicle warranty and
ensure the best vehicle performance and re-
liability. More frequent maintenance may be
needed for vehicles in severe operating con-
ditions, such as dusty areas and very short
trip driving. Inspection and service should
also be done anytime a malfunction is sus-
pected.
The oil change indicator system will remind
you that it is time to take your vehicle in for
scheduled maintenance.
On non-instrument cluster display equipped
vehicles, “CHANgE OIL” will flash in the
instrument cluster odometer and a single
chime will sound, indicating that an oil
change is necessary.The oil change indicator message will illumi-
nate approximately 7,000 miles
(11,200 km) after the most recent oil change
was performed. Have your vehicle serviced as
soon as possible, within 500 miles (800 km).
However, an earlier oil change at 4,500 miles
(7,500 km) may be required if the vehicle is
operated under “Severe Duty Conditions”
later in this section.
NOTE:
• The oil change indicator message will not
monitor the time since the last oil change.
Change your vehicle's oil if it has been
6 months since your last oil change even if
the oil change indicator message is NOT
illuminated.
• Change your engine oil more often if you
drive your vehicle off-road for an extended
period of time.
• Under no circumstances should oil change
intervals exceed 7,500 miles (12,000 km)
or 6 months, whichever comes first.
Your authorized dealer will reset the oil
change indicator message after completing
the scheduled oil change.Once A Month Or Before A Long Trip
• Check the engine oil level about five min-
utes after a fully warmed engine is shut off.
Checking the oil level while the vehicle is
on level ground will improve the accuracy of
the oil level reading. Add oil only when the
level is at or below the ADD or MIN mark.
• Check the windshield washer solvent and
add if required.
• Check tire pressure and look for unusual
wear or damage. Rotate tires at the first
sign of irregular wear, even if it occurs
before the oil indicator system turns on.
• Inspect the battery and clean and tighten
the terminals as required.
• Check the fluid levels of coolant reservoir,
automatic transmission, brake master cyl-
inder and power steering and fill as needed.
• Check all lights and other electrical items
for correct operation.
SERVICING AND MAINTENANCE
170