2023 JEEP WRANGLER transmission

300IN CASE OF EMERGENCY
5. Start the engine in the vehicle that has the booster
battery, let the engine idle a few minutes, and then
start the engine in the vehicle with the discharged
battery.
6. Once the engine is started, remove the jumper cables in the reverse sequence.
Disconnecting The Jumper Cables

1. Disconnect the negative
(-)
end of the jumper cable
from the engine ground of the vehicle with the
discharged battery.

2. Disconnect the opposite end of the negative (-)
jumper cable from the negative (-) post of the booster
battery.
3. Disconnect the positive (+) end of the jumper cable
from the positive (+) post of the booster battery. 4. Disconnect the opposite end of the positive
(+)
jumper cable from the positive (+) post of the
discharged vehicle.
5. Reinstall the protective cover over the positive (+)
post of the discharged vehicle.
NOTE:If frequent jump starting is required to start your vehicle
you should have the battery and charging system tested at
an authorized dealer.
IF YOUR ENGINE OVERHEATS
If the vehicle is overheating, it will need to be serviced by
an authorized dealer.
Potential signs of vehicle overheating:
 Temperature gauge is at HOT (H)
 Strong smell of coolant
 White smoke coming from engine or exhaust
 Coolant bottle coolant has bubbles present In the event it is observed that the temperature gauge is
moving towards or close to the HOT (H) position, you can
reduce the potential for overheating by taking the
appropriate action.

On the highways — slow down.
 In city traffic — while stopped, place the transmission in
NEUTRAL (N), but do not increase the engine idle speed
while preventing vehicle motion with the brakes.
 If your Air Conditioner (A/C) is on, turn it off. The A/C
system adds heat to the engine cooling system and
turning the A/C off can help remove this heat.
 You can also turn the temperature control to maximum
heat, the mode control to floor and the blower control
to high. This allows the heater core to act as a supple -
ment to the radiator and aids in removing heat from the
engine cooling system.
CAUTION!
Make sure at all times that unused ends of jumper
cables are not contacting each other or either vehicle
while making connections. Failure to follow these
procedures could result in damage to the charging
system of the booster vehicle or the discharged vehicle.
CAUTION!

Do not run the booster vehicle engine above 2,000 RPM
since it provides no charging benefit, wastes fuel, and
can damage booster vehicle engine.

CAUTION!
Accessories plugged into the vehicle power outlets draw
power from the vehicle’s battery, even when not in use
(i.e., cellular devices, etc.). Eventually, if plugged in long
enough without engine operation, the vehicle’s battery
will discharge sufficiently to degrade battery life and/or
prevent the engine from starting.
WARNING!
You or others can be badly burned by hot engine
coolant (antifreeze) or steam from your radiator. If you
see or hear steam coming from under the hood, do not
open the hood until the radiator has had time to cool.
Never try to open a cooling system pressure cap when
the radiator or coolant bottle is hot.

23_JL_OM_EN_USC_t.book Page 300

IN CASE OF EMERGENCY301
MANUAL PARK RELEASE
In order to move the vehicle in cases where the
transmission will not shift out of PARK (P) (such as a
depleted battery), a Manual Park Release is available. See the following steps to use the Manual Park Release:

1. Firmly apply the parking brake.

2. Using a small screwdriver or similar tool, remove the
manual park release cover located in front of the gear
selector, to access the release tether strap.

Manual Park Release Cover

3. Fish the tether strap up through the opening in the console base.

Tether Strap

4. Press and maintain firm pressure on the brake pedal.
5. Pull the tether strap up until the release lever locks into place in the vertical position. The vehicle is now
out of PARK (P) and can be moved. Release the
parking brake only when the vehicle is securely
connected to a tow vehicle.

Vertical Released Position

CAUTION!
Driving with a hot cooling system could damage your
vehicle. If the temperature gauge reads “H,” pull over
and stop the vehicle. Idle the vehicle with the air condi -
tioner turned off until the pointer drops back into the
normal range. If the pointer remains on the “H” and you
hear continuous chimes, turn the engine off immedi -
ately and call for service.
WARNING!
Always secure your vehicle by fully applying the parking
brake before activating the Manual Park Release. In
addition, you should be seated in the driver’s seat with
your foot firmly on the brake pedal when activating the
Manual Park Release. Activating the Manual Park
Release will allow your vehicle to roll away if it is not
secured by the parking brake, or by proper connection
to a tow vehicle. Activating the Manual Park Release on
an unsecured vehicle could lead to serious injury or
death for those in or around the vehicle.
7

23_JL_OM_EN_USC_t.book Page 301

302IN CASE OF EMERGENCY
To Reset The Manual Park Release:

1. Pull upward on the tether strap, releasing it from the
“locked” position.

2. Lower the Manual Park Release lever downward and to the left, into its original position.

Original Tether Position

3. Tuck the tether strap into the base of the console, and reinstall the cover.
NOTE:When the lever is locked in the release position the access
cover cannot be reinstalled.
FREEING A STUCK VEHICLE
If your vehicle becomes stuck in mud, sand or snow, it can
often be moved using a rocking motion. Turn the steering
wheel right and left to clear the area around the front
wheels. For vehicles with automatic transmission, push
and hold the lock button on the gear selector. Then, shift
back and forth between DRIVE (D) and REVERSE (R) (with
automatic transmission) or SECOND (2) gear and
REVERSE (R) (with manual transmission), while gently
pressing the accelerator. Use the least amount of
accelerator pedal pressure that will maintain the rocking
motion, without spinning the wheels or racing the engine.
NOTE:
For vehicles with automatic transmission: Shifts
between DRIVE (D) and REVERSE (R) can only be
achieved at wheel speeds of 5 mph (8 km/h) or less.
Whenever the transmission remains in NEUTRAL (N)
for more than two seconds, you must press the brake
pedal to engage DRIVE (D) or REVERSE (R).
 Push the ESC OFF button to place the Electronic
Stability Control (ESC) system in “Partial OFF” mode,
before rocking the vehicle
Úpage 246. Once the
vehicle has been freed, push the ESC OFF button 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 vehicle'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!
 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.
 When “rocking” a stuck vehicle by shifting 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 overheating and failure. It
can also damage the tires. Do not spin the wheels
above 30 mph (48 km/h) while in gear (no transmis -
sion shifting occurring).

23_JL_OM_EN_USC_t.book Page 302

IN CASE OF EMERGENCY303
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 4x4 vehicles may also be towed as described
Úpage 176.
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
manufacturer’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 fascia/
bumpers or associated brackets. State and local laws
regarding vehicles under tow must be observed.
If you must use the accessories (wipers, defrosters, etc.)
while being towed, the ignition must be in the ON/RUN
position, not the ACC position.
If the vehicle's battery is discharged, instructions on
shifting the automatic transmission out of PARK (P) in
order to move the vehicle
Úpage 301.
FOUR–WHEEL DRIVE MODELS
FCA US LLC recommends towing with all wheels OFF the
ground. Acceptable methods are to tow the vehicle on a
flatbed or with one end of the vehicle raised and the
opposite 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, with ALL wheels on the ground), IF the transfer
case is in NEUTRAL (N) and the transmission is in PARK (P)
(for automatic transmissions) or in gear NOT in NEUTRAL ,
for manual transmissions)
Úpage 176.
Towing Condition
Wheels OFF The Ground 4WD MODELS
Flat Tow NONE
Automatic Transmission in PARK (P)
 Manual Transmission in gear ( NOT in NEUTRAL)
 Transfer Case in NEUTRAL (N)
 Tow in Forward direction
Wheel Lift Or Dolly Tow Front
NOT ALLOWED
Rear NOT ALLOWED
Flatbed ALLBEST METHOD
NOTE:When towing your vehicle, always follow applicable state and provincial laws. Contact state and provincial Highway Safety offices for additional details.
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 steering, the igni -
tion switch must be in the ACC or ON/RUN mode, not
in the OFF mode.
7

23_JL_OM_EN_USC_t.book Page 303

304IN CASE OF EMERGENCY
(Continued)
WITHOUT THE KEY FOB
Special care must be taken when the vehicle is towed with
the ignition in the OFF mode. The only approved method of
towing without the key fob is with a flatbed truck. Proper
towing equipment is necessary to prevent damage to the
vehicle.
EMERGENCY TOW HOOKS —
I
F EQUIPPED
If your vehicle is equipped with tow hooks, they are
mounted in the front and the rear fascia/bumpers.
NOTE:For off-road recovery, it is recommended to use both of the
front tow hooks to minimize the risk of damage to the
vehicle. Always use an appropriately rated tow strap.

Front Tow Hooks
Rear Tow Hook

CAUTION!
 Front or rear wheel lifts must not be used (if the
remaining wheels are on the ground). Internal
damage to the transmission or transfer case will
occur if a front or rear wheel lift is used when towing.
 Towing this vehicle in violation of the approved
requirements can cause severe transmission and/or
transfer case damage. Damage from improper
towing is not covered under the New Vehicle Limited
Warranty.
WARNING!
Stand clear of vehicles when pulling with tow hooks.
Tow straps may become disengaged, causing
serious injury.
Do not use a chain for freeing a stuck vehicle. Chains
may break, causing serious injury or death.
 Failure to follow proper tow hook usage may cause
components to break resulting in serious injury or
death.
CAUTION!
Tow hooks are for emergency use only, to rescue a
vehicle stranded off road. Tow straps are recom -
mended when towing the vehicle, chains may cause
vehicle damage.
 The tow hooks must not be used to move the vehicle
off the road or where there are obstacles.
 Do not use the tow hooks for tow truck hookup or
highway towing.
 Do not use the tow hooks to pull a vehicle onto a
flatbed truck.
 Do not use the tow hooks to free a stuck vehicle
Úpage 302.
 Damage to your vehicle may occur if these guidelines
are not followed
Úpage 303.
WARNING!

23_JL_OM_EN_USC_t.book Page 304

SERVICING AND MAINTENANCE309
Change the manual transmission fluid if using your
vehicle for any of the following: trailer towing, snow
plowing, heavy loading, taxi, police, delivery service
(commercial service), off-road, desert operation or more
than 50% of your driving is at sustained high speeds
during hot weather, above 90°F (32°C). X
XXXX
Change transfer case fluid if using your vehicle for any of
the following: police, taxi, fleet, or frequent trailer towing. X
X
Inspect and replace PCV valve if necessary. X
Change front and rear axle fluid if using your vehicle for
police, taxi, fleet, off-road or frequent trailer towing. X
XX
1. The spark plug change interval is mileage based only; yearly intervals do not apply.
Mileage Or Time Passed (Whichever Comes
First):
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
WARNING!
 You can be badly injured working on or around a motor vehicle. Do only service work for which you have the knowledge and the right equipment. If you have any doubt about your
ability to perform a service job, take your vehicle to a competent mechanic.
 Failure to properly inspect and maintain your vehicle could result in a component malfunction and affect vehicle handling and performance. This could cause an accident.
8

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328SERVICING AND MAINTENANCE
(Continued)
(Continued)
Installing The Rear Wiper

1. Lift the wiper arm off of the glass.

2. Insert the wiper blade pivot pin into the opening on
the end of the wiper arm and rotate the wiper in to
place.
3. Place with wiper on the glass and close the tail gate.
EXHAUST SYSTEM
The best protection against carbon monoxide entry into
the vehicle body is a properly maintained engine exhaust
system.
If you notice a change in the sound of the exhaust system;
or if the exhaust fumes can be detected inside the vehicle;
or when the underside or rear of the vehicle is damaged;
have an authorized technician inspect the complete
exhaust system and adjacent body areas for broken,
damaged, deteriorated, or mispositioned parts. Open
seams or loose connections could permit exhaust fumes
to seep into the passenger compartment. In addition, have
the exhaust system inspected each time the vehicle is
raised for lubrication or oil change. Replace as required.
Under normal operating conditions, the catalytic converter
will not require maintenance. However, it is important to
keep the engine properly tuned to ensure proper catalyst
operation and prevent possible catalyst damage.
NOTE:Intentional tampering with emissions control systems can
result in civil penalties being assessed against you.
In unusual situations involving grossly malfunctioning
engine operation, a scorching odor may suggest severe
and abnormal catalyst overheating. If this occurs, stop the
vehicle, turn off the engine and allow it to cool. Service,
including a tune-up to manufacturer's specifications,
should be obtained immediately.
To minimize the possibility of catalytic converter damage:
Do not interrupt the ignition when the transmission is
in gear and the vehicle is in motion.
 Do not try to start the vehicle by pushing or towing the
vehicle.
 Do not idle the engine with any ignition components
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough idle
or malfunctioning operating conditions.
COOLING SYSTEM
WARNING!
Exhaust gases can injure or kill. They contain Carbon
Monoxide (CO), which is colorless and odorless.
Breathing it can make you unconscious and can
eventually poison you
Úpage 288.
A hot exhaust system can start a fire if you park over
materials that can burn. Such materials might be
grass or leaves coming into contact with your
exhaust system. Do not park or operate your vehicle
in areas where your exhaust system can contact
anything that can burn.
CAUTION!
The catalytic converter requires the use of unleaded
fuel only. Leaded gasoline will destroy the effective -
ness of the catalyst as an emissions control device
and may seriously reduce engine performance and
cause serious damage to the engine.
 Damage to the catalytic converter can result if your
vehicle is not kept in proper operating condition. In
the event of engine malfunction, particularly
involving engine misfire or other apparent loss of
performance, have your vehicle serviced promptly.
Continued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and
vehicle.
WARNING!
WARNING!
You or others can be badly burned by hot engine
coolant (antifreeze) or steam from your radiator. If
you see or hear steam coming from under the hood,
do not open the hood until the radiator has had time
to cool. Never open a cooling system pressure cap
when the radiator or coolant bottle is hot.
 Keep hands, tools, clothing, and jewelry away from
the radiator cooling fan when the hood is raised. The
fan starts automatically and may start at any time,
whether the engine is running or not.

23_JL_OM_EN_USC_t.book Page 328

332SERVICING AND MAINTENANCE
FRONT/REAR AXLE FLUID
For normal service, periodic fluid level checks are not
required. When the vehicle is serviced for other reasons
the exterior surfaces of the axle assembly should be
inspected. If gear oil leakage is suspected inspect the fluid
level.
Fluid Level Check
Lubricant should be approximately 1/8 inch (3 mm) below
the bottom edge of the oil fill hole.
NOTE:Make sure that the vehicle is level and supported by the
axles.
Adding Fluid
Add lubricant only at the fill hole and only to the level
specified above.
Selection Of Lubricant
Use only manufacturer recommended fluid Úpage 376.
TRANSFER CASE
Fluid Level Check
The fluid level should be to the bottom edge of the fill hole
when the vehicle is in a level position.

Transfer Case

Drain And Refill
For the proper maintenance intervals Úpage 307.
Selection Of Lubricant
Use only the manufacturer recommended fluid Úpage 376.
MANUAL TRANSMISSION — IF EQUIPPED
Fluid Level Check
Check the fluid level by removing the fill plug. The fluid
level should be between the bottom of the fill hole and a
point not more than 3/16 of an inch (4.76 mm) below the
bottom of the hole.
Add fluid, if necessary, to maintain the proper level.
Frequency Of Fluid Change
Under normal operating conditions, the fluid installed at
the factory will give satisfactory lubrication for the life of
the vehicle. If the fluid becomes contaminated with water,
it should be changed immediately. Otherwise, change the
fluid as recommended in the Maintenance Plan. Refer to
the Maintenance Plan for the proper maintenance
intervals
Úpage 307.
Selection Of Lubricant
Use only the manufacturer recommended manual
transmission fluid Úpage 376.

To avoid contamination from foreign matter or mois -
ture, use only new brake fluid or fluid that has been
in a tightly closed container. Keep the master
cylinder reservoir cap secured at all times. Brake
fluid in an open container absorbs moisture from the
air resulting in a lower boiling point. This may cause
it to boil unexpectedly during hard or prolonged
braking, resulting in sudden brake failure. This could
result in a collision.
 Overfilling the brake fluid reservoir can result in
spilling brake fluid on hot engine parts, causing the
brake fluid to catch fire. Brake fluid can also damage
painted and vinyl surfaces, care should be taken to
avoid its contact with these surfaces.
 Do not allow petroleum-based fluid to contaminate
the brake fluid. Brake seal components could be
damaged, causing partial or complete brake failure.
This could result in a collision.
WARNING!
1 — Fill hole
2 — Drain hole

23_JL_OM_EN_USC_t.book Page 332