ECU JEEP WAGONEER 2023 Workshop Manual

296IN CASE OF EMERGENCY
(Continued)
3. Fit the jack handle extension over the drive nut. Use
the wheel lug wrench and extension to completely
lower the spare tire. Keep turning the handle counter -
clockwise until the winch stops.

Winch Drive Nut Location
Wrench Rotation

4. Slide the tire out from under the vehicle and rotate it vertically behind the rear fascia/bumper.
5. Pull the metal retainer toward you to release it. 6. Slide the retainer up the steel extension tube and
winch cable. Rotate the retainer and push it through
the hole in the wheel.

Releasing Winch Retainer

JACKING INSTRUCTIONS

Jack Warning Label

WARNING!
Carefully follow these tire changing warnings 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 Flashers.
 Apply the parking brake firmly and set the transmis -
sion in PARK.
 Block the wheel diagonally opposite the wheel to be
raised.
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 indicated and for
lifting this vehicle during a tire change.
 If working on or near a roadway, be extremely careful
of motor traffic.
 To assure that spare tires, flat or inflated, are
securely stowed, spares must be stowed with the
back of the wheel facing the ground.
WARNING!

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300IN CASE OF EMERGENCY
12. Lower the jack to the fully closed position.
13. Return the Jack and tools back into the jack storage
bin. Reinstall the jack storage cover by firmly pushing
down until the clips lock into position.
14. After 25 miles (40 km), check the lug nut torque with a torque wrench to ensure that all lug nuts are
properly seated against the wheel.
15. Have the road wheel and tire repaired as soon as possible and properly secure the spare tire, jack and
tool kit.
NOTE:Do not drive with the spare tire installed for more than
50 miles (80 km) at a max speed of 50 mph (80 km/h).
JUMP STARTING
If your vehicle has a discharged battery, it can be jump
started using a set of jumper cables and a battery in
another vehicle, or by using a portable battery booster
pack. Jump starting can be dangerous if done improperly,
so please follow the procedures in this section carefully.
NOTE:When using a portable battery booster pack, follow the
manufacturer's operating instructions and precautions.
PREPARATIONS FOR JUMP START
The battery in your vehicle is located in the front of the
engine compartment, behind the left headlight assembly.

Positive (+) Jump Starting Post

NOTE:The positive (+) battery post may be covered with a
protective cap. Lift up on the cap to gain access to the
positive battery post. Do not jump off fuses. Only jump
directly off positive post which has a positive (+) symbol on
or around the post.
See the following steps to prepare for jump starting:

1. Apply the parking brake, shift the automatic transmission into PARK (P) and turn the ignition OFF.

2. Turn off the heater, radio, and all electrical accessories.
3. If using another vehicle to jump start the battery, park the vehicle within the jumper cables’ reach, apply the
parking brake and make sure the ignition is OFF.
NOTE:Be sure that the disconnected cable ends do not touch
each other, or either vehicle, until properly connected for
jump starting.
WARNING!
Do not attempt jump starting if the battery is frozen. It
could rupture or explode and cause personal injury.
CAUTION!
Do not use a portable battery booster pack or any other
booster source with a system voltage greater than
12 Volts or damage to the battery, starter motor,
alternator or electrical system may occur.
WARNING!
Do not allow vehicles to touch each other as this could
establish a ground connection and personal injury
could result.

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IN CASE OF EMERGENCY303
IF YOUR ENGINE OVERHEATS
If the vehicle is overheating, it will need to be serviced by
an authorized dealer.
Potential signs of vehicle overheating can be:
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.
MANUAL PARK RELEASE
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.
WARNING!
 Never have any smoking materials lit in or near the
vehicle when the fuel door is open or the tank is
being filled.
 Never add fuel when the engine is running. This is in
violation of most state and federal fire regulations
and may cause the Malfunction Indicator Light to
turn on.
 A fire may result if fuel is pumped into a portable
container that is inside of a vehicle. You could be
burned. Always place fuel containers on the ground
while filling.
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.
CAUTION!
Driving with a hot cooling system could damage your
vehicle. If the temperature gauge reads HOT (H), as
soon as it’s safe, pull over and stop the vehicle. Idle the
vehicle with the air conditioner turned off until the
pointer drops back into the normal range. If the pointer
remains on HOT (H), and you hear continuous chimes,
turn the engine off immediately and call for service.
WARNING!
You should be seated in the driver’s seat with your foot
firmly placed on the brake pedal to maintain control of
the vehicle before activating the Manual Park Release.
If possible, you should apply the parking brake.
Activating the Manual Park Release will allow your
vehicle to roll away if it is not secured or properly
connected 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

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304IN CASE OF EMERGENCY
Follow These Steps To Activate The Manual Park Release:

1. Apply firm pressure to the brake pedal while seated
in the driver’s seat.

2. Apply the Electric Park Brake (EPB), if possible.

Manual Park Release Location

3. Using a flathead screwdriver or similar tool, remove the Manual Park Release access cover, which is to
the lower left of the steering column, below the EPB
switch.

Access Cover

4. To unlock handle, insert a flathead screwdriver or similar tool into the lock release, rotate a quarter turn
counterclockwise and hold simultaneously pulling on
the tether strap.

Lock Release

5. Pull the tether strap out as far as it will go, then release it. The transmission should now be in
NEUTRAL (N), allowing the vehicle to be moved.

Tether Strap

6. Release the EPB only when the vehicle is securely connected to a tow vehicle.

23_WS_OM_EN_USC_t.book Page 304

IN CASE OF EMERGENCY307
REAR-WHEEL DRIVE MODELS
FCA US LLC recommends towing your vehicle with all
four wheels OFF the ground using a flatbed.
If flatbed equipment is not available, and the transmission
is operable, the vehicle may be towed (with rear wheels off
the ground) under the following conditions:
 The transmission must be in NEUTRAL (N). For instruc -
tions on shifting the transmission to NEUTRAL (N) when
the engine is off
Úpage 303.
 The towing speed must not exceed 30 mph (48 km/h).
 The towing distance must not exceed 30 miles
(48 km). If the transmission is not operable, or the vehicle must be
towed faster than 30 mph (48 km/h) or farther than
30 miles (48 km), tow with the rear wheels OFF the
ground. Acceptable methods are to tow the vehicle on a
flatbed, or with the front wheels raised and the rear
wheels on a towing dolly, or (when using a suitable
steering wheel stabilizer to hold the front wheels in the
straight position) with the rear wheels raised and the front
wheels ON the ground.
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, vehicles with a two-speed transfer case 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
Úpage 190.
Vehicles equipped with a single-speed transfer case have
no NEUTRAL (N) position, and therefore must be towed will
all four wheels OFF the ground.
CAUTION!
Do not use sling type equipment when towing.
Vehicle damage may occur.
 When securing the vehicle to a flatbed truck, always
secure by tire/wheel straps. Do not attach to front or
rear suspension components, body or frame.
Damage to your vehicle will result from improper
towing.
CAUTION!
Towing faster than 30 mph (48 km/h) or farther than
30 miles (48 km) with rear wheels on the ground can
cause severe transmission damage. Damage from
improper towing is not covered under the New
Vehicle Limited Warranty.
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.
7

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SERVICING AND MAINTENANCE317
NOTE:
After adding oil to the engine, always reinstall the oil
cap securely by rotating clockwise until it stops. Never
run the engine without the oil fill cap as this could
cause an oil leak.
 Because the oil level is automatically detected only
when the engine has been off and restarted (after four
minutes), the system cannot immediately detect a
sudden drop in oil level while driving (for example, if the
oil pan starts to leak due to damage during an off-road
event).
CHECKING OIL LEVEL — 5.7L & 6.4L
E
NGINES
To ensure proper engine lubrication, the engine oil must
be maintained at the correct level. Check the oil level at
regular intervals, such as every fuel stop. The best time to
check the engine oil level is about five minutes after a fully
warmed up engine is shut off.
Checking the oil while the vehicle is on level ground will
improve the accuracy of the oil level readings.
There are four possible dipstick types:
 Crosshatched zone.
 Crosshatched zone marked SAFE.
 Crosshatched zone marked with MIN at the low end of
the range and MAX at the high end of the range.
 Crosshatched zone marked with dimples at the MIN
and the MAX ends of the range.
NOTE:Always maintain the oil level within the crosshatch
markings on the dipstick.
Adding 1 qt (1 L) of oil when the reading is at the low end
of the dipstick range will raise the oil level to the high end
of the range marking.
ADDING WASHER FLUID
The instrument cluster display will indicate when the
washer fluid level is low. When the sensor detects a low
fluid level, the Low Washer Fluid Warning Light will turn on
and the "Washer Fluid Low" message will be displayed.
The fluid reservoir for the windshield washers and the rear
window washer is shared. The fluid reservoir is located in
the engine compartment, be sure to check the fluid level
at regular intervals. Fill the reservoir with windshield
washer solvent only (not radiator antifreeze). When
refilling the washer fluid reservoir, take some washer fluid
and apply it to a cloth or towel and wipe clean the wiper
blades, this will help blade performance. To prevent
freeze-up of your windshield washer system in cold
weather, select a solution or mixture that meets or
exceeds the temperature range of your climate. This rating
information can be found on most washer fluid containers.
NOTE:Use care when filling under hood fluids such as engine oil,
washer fluid, antifreeze, etc. to minimize spillage onto top
of engine. Any excess fluid that is spilled onto the top of
the engine should be removed using compressed air or an
absorbent cloth.
CAUTION!
If the “Critically Low or Critically High” Oil Level Warning
Light is illuminated, the following steps should be
taken:
Critically Low: add two quarts of manufacturer speci -
fied oil as soon as possible
Úpage 376. Continuing
to operate the vehicle with “Critically Low” oil level
may damage the engine.
 Critically High: contact an authorized dealer for
service. Continuing to operate the vehicle with “Criti -
cally High” oil level may damage the engine.
Do not use any oils that are not manufacturer specified
and API approved.
Used engine oil and oil filters contain substances which
are harmful to the environment. When oil and filters are
changed contact an authorized dealer and dispose of in
a safe and responsible manner.
WARNING!
Commercially available windshield washer solvents are
flammable. They could ignite and burn you. Care must
be exercised when filling or working around the washer
solution.
8

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322SERVICING AND MAINTENANCE
5. Pull out on the access door release tab and then pull
down from the top to remove the cabin air filter
access door from the vehicle.

Cabin Air Filter Access Door

6. Push the outside retaining tabs towards the cabin air filter cover to release the cover from the HVAC
housing.

Cabin Air Filter Cover

7. Remove the cabin air filter by pulling it straight out of the housing.

Cabin Air Filter

8. Install the cabin air filter with the arrow on the filter pointing toward the floor. When installing the filter
cover, make sure the retaining tabs fully engage into
the HVAC housing.
9. Align the lower tabs on the access panel and then push the top in to lock it securely back into the dash
panel.
10. Angle the door to get the glove compartment travel stops back inside the dash panel.
11. Reinstall the glove compartment door on the door hinge.
12. Reattach the glove compartment tension tether by inserting the tether clip in the glove compartment and
sliding the clip away from the face of the glove
compartment door.
NOTE:Ensure the glove compartment door hinges and glove
compartment travel stops are fully engaged.
1 — Access Door Release Tab
2 — Cabin Air Filter Access Door
1 — Cabin Air Filter Cover
2 — Retaining Tabs
1 — Cabin Air Filter
CAUTION!
The cabin air filter is identified with an arrow to indicate
airflow direction through the filter. Failure to properly
install the filter will result in the need to replace it more
often.

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SERVICING AND MAINTENANCE329
AUTOMATIC TRANSMISSION
Special Additives
The manufacturer strongly recommends against using any
special additives in the transmission. Automatic
Transmission Fluid (ATF) is an engineered product and its
performance may be impaired by supplemental additives.
Therefore, do not add any fluid additives to the
transmission. Avoid using transmission sealers as they
may adversely affect seals.
Fluid Level Check
The fluid level is preset at the factory and does not require
adjustment under normal operating conditions. Routine
fluid level checks are not required; therefore the
transmission has no dipstick. An authorized dealer can
check your transmission fluid level using special service
tools. If you notice fluid leakage or transmission
malfunction, visit an authorized dealer immediately to
have the transmission fluid level checked. Operating the
vehicle with an improper fluid level can cause severe
transmission damage.
Fluid And Filter Changes
Under normal operating conditions, the fluid installed at
the factory will provide satisfactory lubrication for the life
of the vehicle.
Routine fluid and filter changes are not required. However,
change the fluid and filter if the fluid becomes
contaminated (with water, etc.), or if the transmission is
disassembled for any reason.
Selection Of Lubricant
It is important to use the proper transmission fluid to
ensure optimum transmission performance and life. Use
only the manufacturer's specified transmission fluid
Úpage 377. It is important to maintain the transmission
fluid at the correct level using the recommended fluid.
NOTE:No chemical flushes should be used in any transmission;
only the approved lubricant should be used.

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!CAUTION!
Do not use chemical flushes in your transmission as the
chemicals can damage your transmission components.
Such damage is not covered by the New Vehicle Limited
Warranty.
CAUTION!
If a transmission fluid leak occurs, visit an authorized
dealer immediately. Severe transmission damage may
occur. An authorized dealer has the proper tools to
adjust the fluid level accurately.
CAUTION!
Using a transmission fluid other than the
manufacturer’s recommended fluid may cause
deterioration in transmission shift quality and/or torque
converter shudder.8

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340SERVICING AND MAINTENANCE
F32 –10 Amp RedMOD ICS Switch Bank / SW Bank Upper / SW EPB / Aux Switch Bank
Module (ASBM) / Mod HVAC Cntrl Frt / Humidity Rain Light Sensor
(HRLS)
F33 –15 Amp BlueTransfer case SW / SW Bank Lower / Mod ICS Switch Bank Rear /
Climate Control Display / Suspension SW *
F34 ––Spare
F35 –10 Amp RedIRCAM Heater
F36 ––Spare
F37 ––Spare
F38 ––Spare
F39 ––Spare
F40 ––Spare
F41A ––Spare
F41B ––Spare
F42A ––Spare
F42B –10 Amp RedMOD HVAC Control Frt
F43A ––Spare
F43B ––Spare
F44 –15 Amp BlueMOD Cluster CCN / MOD SGW (Cybersecurity)
F45 30 Amp Pink –MOD Inverter 150W
F46 ––Spare
F47A ––Spare
F47B ––Spare
Cavity Cartridge Fuse Micro Fuse Description
* If Equipped

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342SERVICING AND MAINTENANCE
F62A ––Spare
F62B ––Spare
F63A –15 Amp BluePort UC1 Dual USB Frt / Wireless Charging Pad MOD (WCPM) -
High/Premium Only
F63B –15 Amp BlueTelematics Box Module (TBM) / Mod-DCSD /Mod FPDM
F64A –10 Amp RedMOD ORC
F64B –10 Amp RedSteering Column Control Module (SCCM)
F65 –5 Amp TanMOD SGW (Cybersecurity)
F66 ––Spare
CB1 ––Spare
CB2 ––Spare
CB3 ––Spare
CB4 ––Spare
CB5 ––Spare
CB6 ––Spare
Cavity Cartridge Fuse Micro Fuse Description
* If Equipped

23_WS_OM_EN_USC_t.book Page 342