2023 JEEP WAGONEER ECU

SAFETY287
SAFETY TIPS
TRANSPORTING PASSENGERS
NEVER TRANSPORT PASSENGERS IN THE CARGO AREA.
TRANSPORTING PETS
Air Bags deploying in the front seat could harm your pet.
An unrestrained pet will be thrown about and possibly
injured, or injure a passenger during panic braking or in a
collision.
Pets should be restrained in the rear seat (if equipped) in
pet harnesses or pet carriers that are secured by seat
belts.
CONNECTED VEHICLES
Privacy of any wireless and wired communications cannot
be assured. Third parties may unlawfully intercept
information and private communications without your
consent. For further information, refer to “Data Collection
& Privacy” in your Uconnect Owner’s Manual Supplement
or “Onboard Diagnostic System (OBD II) Cybersecurity”
Úpage 118.
SAFETY CHECKS YOU SHOULD MAKE
I
NSIDE THE VEHICLE
Seat Belts
Inspect the seat belt system periodically, checking for
cuts, frays, and loose parts. Damaged parts must be
replaced immediately. Do not disassemble or modify the
system.
If your vehicle is involved in a collision, or if you have
questions regarding the seat belt or retractor conditions,
take your vehicle to an authorized FCA dealer or
authorized FCA Certified Collision Care Program facility for
inspection.
Air Bag Warning Light
The Air Bag Warning Light will turn on for four to
eight seconds as a bulb check when the
ignition switch is first placed in the ON/RUN
position. If the light is either not on during
starting, stays on, or turns on while driving, have the
system inspected at an authorized dealer as soon as
possible. After the bulb check, this light will illuminate with
a single chime when a fault with the Air Bag System has
been detected. It will stay on until the fault is removed. If
the light comes on intermittently or remains on while
driving, have an authorized dealer service the vehicle
immediately
Úpage 256.
WARNING!
 An incorrectly anchored tether strap could lead to
increased head motion and possible injury to the
child. Use only the anchorage position directly behind
the child seat to secure a child restraint top tether
strap.
 If your vehicle is equipped with a split rear seat,
make sure the tether strap does not slip into the
opening between the seatbacks as you remove slack
in the strap.
WARNING!
Do not leave children or animals inside parked vehi -
cles in hot weather. Interior heat buildup may cause
serious injury or death.
 It is extremely dangerous to ride in a cargo area,
inside or outside of a vehicle. In a collision, people
riding in these areas are more likely to be seriously
injured or killed.
 Do not allow people to ride in any area of your vehicle
that is not equipped with seats and seat belts.
 Be sure everyone in your vehicle is in a seat and
using a seat belt properly.
WARNING!
It is not possible to know or to predict all of the possible
outcomes if your vehicle’s systems are breached. It may
be possible that vehicle systems, including safety
related systems, could be impaired or a loss of vehicle
control could occur that may result in an accident
involving serious injury or death.
6

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288SAFETY
(Continued)
(Continued)
Defroster
Check operation by selecting the defrost mode and place
the blower control on high speed. You should be able to
feel the air directed against the windshield. See an
authorized dealer for service if your defroster is
inoperable.
Floor Mat Safety Information
Always use floor mats designed to fit your vehicle. Only use
a floor mat that does not interfere with the operation of the
accelerator, brake or clutch pedals. Only use a floor mat
that is securely attached using the floor mat fasteners so
it cannot slip out of position and interfere with the
accelerator, brake or clutch pedals or impair safe
operation of your vehicle in other ways.
WARNING!
An improperly attached, damaged, folded, or stacked
floor mat, or damaged floor mat fasteners may cause
your floor mat to interfere with the accelerator, brake, or
clutch pedals and cause a loss of vehicle control. To
prevent SERIOUS INJURY or DEATH:  ALWAYS securely attach your floor mat
using the floor mat fasteners. DO NOT
install your floor mat upside down or turn
your floor mat over. Lightly pull to confirm
mat is secured using the floor mat fasteners on a
regular basis.
 ALWAYS REMOVE THE EXISTING FLOOR
MAT FROM THE VEHICLE before installing
any other floor mat. NEVER install or stack
an additional floor mat on top of an
existing floor mat.
 ONLY install floor mats designed to fit your vehicle.
NEVER install a floor mat that cannot be properly
attached and secured to your vehicle. If a floor mat
needs to be replaced, only use a FCA approved floor
mat for the specific make, model, and year of your
vehicle.
 ONLY use the driver’s side floor mat on the driver’s
side floor area. To check for interference, with the
vehicle properly parked with the engine off, fully
depress the accelerator, the brake, and the clutch
pedal (if present) to check for interference. If your
floor mat interferes with the operation of any pedal,
or is not secure to the floor, remove the floor mat
from the vehicle and place the floor mat in your
trunk.
 ONLY use the passenger’s side floor mat on the
passenger’s side floor area.
WARNING!
ALWAYS make sure objects cannot fall or slide into
the driver’s side floor area when the vehicle is
moving. Objects can become trapped under acceler -
ator, brake, or clutch pedals and could cause a loss
of vehicle control.
 NEVER place any objects under the floor mat (e.g.,
towels, keys, etc.). These objects could change the
position of the floor mat and may cause interference
with the accelerator, brake, or clutch pedals.
 If the vehicle carpet has been removed and
re-installed, always properly attach carpet to the floor
and check the floor mat fasteners are secure to the
vehicle carpet. Fully depress each pedal to check for
interference with the accelerator, brake, or clutch
pedals then re-install the floor mats.
 It is recommended to only use mild soap and water
to clean your floor mats. After cleaning, always check
your floor mat has been properly installed and is
secured to your vehicle using the floor mat fasteners
by lightly pulling mat.
WARNING!

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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!

23_WS_OM_EN_USC_t.book Page 296

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.

23_WS_OM_EN_USC_t.book Page 300

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.
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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.
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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.
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