2023 JEEP WAGONEER ECU

GETTING TO KNOW YOUR VEHICLE91
Retractable Cargo Area Cover —
If Equipped
The purpose of this cover is for privacy, not to secure
loads. It will not prevent cargo from shifting or protect
passengers from loose cargo.
To cover the cargo area:

1. Grab the cover at the center handle and pull over the
cargo area.

2. Insert the pins on the ends of the cover into the slots in the pillar trim cover.
3. The liftgate may be opened with the cargo cover in place.

Rear Cargo Cover

Cargo Net — If Equipped
The rear cargo area may be equipped with a cargo net to
keep items secure while driving.
To attach the cargo net, the clips must be hooked through
the loops on both sides of the cargo area.
ROOF LUGGAGE RACK — IF EQUIPPED
The crossbars and side rails are designed to carry weight
on vehicles equipped with a luggage rack. The load must
not exceed 150 lb (68 kg), and should be uniformly
distributed over the luggage rack crossbars.
The crossbars on your vehicle are delivered stowed in the
rear cargo bin. Crossbars should always be used
whenever cargo is placed on the roof rack. Check the
straps frequently to be sure that the load remains securely
attached.
The roof rack does not increase the total load carrying
capacity of the vehicle. Be sure the total load of cargo
inside the vehicle plus that on the external rack does not
exceed the maximum vehicle load capacity.
INSTALLING THE CROSSBARS
There are two crossbars equipped with your vehicle. They
are located in the rear cargo bin, stored in foam blocks.
There is also a packet of fastener screws and a Torx
wrench provided in the foam blocks. You can find the
packet of fastener screws in the left foam block and the
Torx wrench in the right foam block.

Stowed Crossbars

WARNING!
In a collision, a loose cargo cover in the vehicle could
cause injury. It could fly around in a sudden stop and
strike someone in the vehicle. Do not store the cargo
cover on the cargo floor or in the passenger
compartment. Remove the cover from the vehicle when
taken from its mounting. Do not store it in the vehicle.WARNING!
In a collision, loose crossbars in the vehicle could cause
injury. They could fly around in a sudden stop and strike
someone in the vehicle. Do not store the crossbars on
the cargo floor or in the passenger compartment.
Remove the crossbars from the vehicle when taken
from their mounting. Do not store them in the vehicle.
1 — Fastener Screws
2 — Torx Wrench
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GETTING TO KNOW YOUR VEHICLE93

Open Outboard Stanchion (Underside Shown)

3. Using the provided Torx wrench, loosen the Torx bolts
on both ends of the crossbar.

Step 3

4. Using the provided wrench and fasteners, bolt the fasteners to the side rail.

Torque Wrench Indicator

NOTE:An indicator on the wrench will show when the fastener is
tightened to the indicated torque specification. The
slanted line will line up with arrow when torquing.

Step 4

5. Tighten down the Torx head bolts on the inboard stanchion.

Step 5

NOTE:It is important that the screws are left loose until both
sides of the crossbar are secured to the rail.
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94GETTING TO KNOW YOUR VEHICLE
(Continued)
6. Repeat steps 2-5 for the second crossbar in the
desired position.

Installed Crossbars

WARNING!
Cargo must be securely tied down before driving your
vehicle. Anything improperly secured to the roof rack,
crossbars, or the roof itself can fly off the vehicle,
particularly at high speeds, resulting in collisions,
personal injury or property damage. Follow the roof rack
cautions when carrying anything on your roof or
roof rack.
CAUTION!
To prevent damage to the roof of your vehicle, DO
NOT carry any loads on the roof rack without the
crossbars installed. The load should be secured and
placed on top of the crossbars, not directly on the
roof. If it is necessary to place the load on the roof,
place a blanket or other protective layer between the
load and the roof surface.
 To avoid damage to the roof rack and vehicle, do not
exceed the maximum roof rack load capacity of 150
lb (68 kg). Always distribute heavy loads as evenly as
possible and appropriately secure the load and any
protective layer placed between the load and the roof
surface.
 Load should always be secured to crossbars first,
with tie down loops used as additional securing
points if needed. Tie loops are intended as supple -
mentary tie down points only. Do not use ratcheting
mechanisms with the tie loops. Check the straps and
thumb wheels frequently to be sure that the load
remains securely attached. Long loads that extend over the windshield, such as
wood panels or surfboards, or loads with large frontal
area should be secured to both the front and rear of
the vehicle.
 Travel at reduced speeds and turn corners carefully
when carrying large or heavy loads on the roof rack.
Wind forces, due to natural causes or nearby truck
traffic, can add sudden upward lift to a load. This is
especially true on large flat loads and may result in
damage to the cargo or your vehicle.
CAUTION!

23_WS_OM_EN_USC_t.book Page 94

GETTING TO KNOW YOUR VEHICLE95
REMOVING THE CROSSBARS
To remove the crossbars, refer to the following procedure:

1. Using the provided Torx wrench, loosen the Torx
head bolts on the stanchion. Do this on both ends of
the crossbar.

Step 1

2. Using the provided wrench, remove the bolts that secure the crossbar to the roof rail. Repeat this on the
other end of the crossbar.

Bolt Location

3. Depress the swing key, and swivel the outboard stanchion 180 degrees back to the stowed position.

Depress The Swing Key Step 3

4. Repeat steps 1-3 for the second crossbar.
5. Place the crossbars back into the foam blocks in the
rear cargo storage bin.
WARNING!
In a collision, loose crossbars in the vehicle could cause
injury. They could fly around in a sudden stop and strike
someone in the vehicle. Do not store the crossbars on
the cargo floor or in the passenger compartment.
Remove the crossbars from the vehicle when taken
from their mounting. Do not store them in the vehicle.
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108GETTING TO KNOW YOUR INSTRUMENT PANEL
When load reduction is activated, the message “Battery
Saver On” or “Battery Saver Mode” will appear in the
instrument cluster.
These messages indicate the vehicle battery has a low
state of charge and continues to lose electrical charge at
a rate that the charging system cannot sustain.
NOTE:
The charging system is independent from load reduc -
tion. The charging system performs a diagnostic on the
charging system continuously.
 If the Battery Charge Warning Light is on it may indicate
a problem with the charging system
Úpage 109.
The electrical loads that may be switched off (if equipped),
and vehicle functions which can be affected by load
reduction:
 Heated Seat/Vented Seats/Heated Wheel
 Rear Defroster And Heated Mirrors
 HVAC System
 115 Volt AC Power Inverter System
 Audio and Telematics System
Loss of the battery charge may indicate one or more of the
following conditions:
 The charging system cannot deliver enough electrical
power to the vehicle system because the electrical
loads are larger than the capability of the charging
system. The charging system is still functioning
properly. 
Turning on all possible vehicle electrical loads (e.g.
HVAC to max settings, exterior and interior lights, over -
loaded power outlets +12 Volt, 115 Volt AC, USB ports)
during certain driving conditions (city driving, towing,
frequent stopping, etc.).
 Installing options like additional lights, upfitter elec -
trical accessories, audio systems, alarms and similar
devices.
 Unusual driving cycles (short trips separated by long
parking periods).
 The vehicle was parked for an extended period of time
(weeks, months).
 The battery was recently replaced and was not charged
completely.
 The battery was discharged by an electrical load left on
when the vehicle was parked.
 The battery was used for an extended period with the
engine not running to supply radio, lights, chargers,
+12 Volt portable appliances like vacuum cleaners,
game consoles and similar devices.
What to do when an electrical load reduction action
message is present (“Battery Saver On” or “Battery Saver
Mode”)
During a trip:
 Reduce power to unnecessary loads if possible:
 Turn off redundant lights (interior or exterior)
 Check what may be plugged in to power outlets
+12 Volt, 115 Volt AC, USB ports
 Check HVAC settings (blower, temperature)
 Check the audio settings (volume) After a trip:

Check if any aftermarket equipment was installed
(additional lights, upfitter electrical accessories, audio
systems, alarms) and review specifications if any (load
and Ignition Off Draw currents).
 Evaluate the latest driving cycles (distance, driving
time and parking time).
 The vehicle should have service performed if the
message is still present during consecutive trips, and if
the evaluation and driving pattern of the vehicle did not
help to identify the cause.WARNING LIGHTS AND MESSAGES
The warning/indicator lights will illuminate in the
instrument panel together with a dedicated message and/
or acoustic signal when applicable. These indications are
indicative and precautionary and as such must not be
considered as exhaustive and/or alternative to the
information contained in the Owner’s Manual, which you
are advised to read carefully in all cases. Always refer to
the information in this chapter in the event of a failure
indication. All active telltales will display first if applicable.
The system check menu may appear different based upon
equipment options and current vehicle status. Some
telltales are optional and may not appear.

23_WS_OM_EN_USC_t.book Page 108

GETTING TO KNOW YOUR INSTRUMENT PANEL111
Night Vision Pedestrian Detected Warning
Light — If Equipped
The Night Vision Pedestrian Warning Light will
illuminate in red when a pedestrian is detected
directly in the vehicle’s path, near the
headlights, and a collision is possible.
If enabled, a chime will sound and a video pop-up may
display when a detection occurs.
Oil Pressure Warning Light
This warning light will illuminate to indicate low
engine oil pressure. If the light turns on while
driving, stop the vehicle, shut off the engine as
soon as possible, and contact an authorized
dealer. A chime will sound when this light turns on.
Do not operate the vehicle until the cause is corrected.
This light does not indicate how much oil is in the engine.
Oil Temperature Warning Light
This warning light will illuminate to indicate the
engine oil temperature is high. If the light turns
on while driving, safely pull over and stop the
vehicle (keep engine running). If the
temperature does not return to normal after a few
minutes, turn off the engine and call for service.
Seat Belt Reminder Warning Light
This warning light indicates when the driver or
passenger seat belt is unbuckled. When the
ignition is first placed in the ON/RUN position
and if the driver’s seat belt is unbuckled, a
chime will sound and the light will turn on. When driving, if the driver or front passenger seat belt
remains unbuckled, the Seat Belt Reminder Light will flash
or remain on continuously and a chime will sound
Úpage 256.
Transmission Temperature Warning
Light — If Equipped
This warning light will illuminate to warn of a
high transmission fluid temperature. This may
occur with strenuous usage such as trailer
towing. If this light turns on, stop the vehicle
and run the engine at idle or slightly faster, with the
transmission in PARK (P) or NEUTRAL (N), until the light
turns off. Once the light turns off, you may continue to
drive normally.
Vehicle Security Warning Light —
If Equipped
This light will flash at a fast rate for
approximately 15 seconds when the vehicle
security system is arming, and then will flash
slowly until the vehicle is disarmed.
YELLOW WARNING LIGHTS
Anti-Lock Brake System (ABS)
Warning Light
This warning light monitors the ABS. The light
will turn on when the ignition is placed in the
ON/RUN position and may stay on for as long
as four seconds.
If the ABS light remains on or turns on while driving, then
the Anti-Lock portion of the brake system is not
functioning and service is required as soon as possible.
However, the conventional brake system will continue to
operate normally, assuming the Brake Warning Light is not
also on.
If the ABS light does not turn on when the ignition is placed
in the ON/RUN position, have the brake system inspected
by an authorized dealer.
WARNING!
If you continue operating the vehicle when the
Transmission Temperature Warning Light is illuminated
you could cause the fluid to boil over, come in contact
with hot engine or exhaust components and cause a
fire.
CAUTION!
Continuous driving with the Transmission Temperature
Warning Light illuminated will eventually cause severe
transmission damage or transmission failure.
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118GETTING TO KNOW YOUR INSTRUMENT PANEL
ONBOARD DIAGNOSTIC SYSTEM
(OBD II) C
YBERSECURITY
Your vehicle is required to have OBD II and a connection
port to allow access to information related to the
performance of your emissions controls. Authorized
service technicians may need to access this information to
assist with the diagnosis and service of your vehicle and
emissions system
Úpage 196.
EMISSIONS INSPECTION AND
MAINTENANCE PROGRAMS
In some localities, it may be a legal requirement to pass an
inspection of your vehicle's emissions control system.
Failure to pass could prevent vehicle registration.
For states that require an Inspection and
Maintenance (I/M), this check verifies the
Malfunction Indicator Light (MIL) is functioning
and is not on when the engine is running, and
that the OBD II system is ready for testing.
Normally, the OBD II system will be ready. The OBD II
system may not be ready if your vehicle was recently
serviced, recently had a depleted battery or a battery
replacement. If the OBD II system should be determined
not ready for the I/M test, your vehicle may fail the test.
Your vehicle has a simple ignition actuated test, which you
can use prior to going to the test station. To check if your
vehicle's OBD II system is ready, you must do the following:

1. Cycle the ignition switch to the ON position, but do not crank or start the engine.

NOTE:If you crank or start the engine, you will have to start this
test over.
2. As soon as you cycle the ignition switch to the ON position, you will see the Malfunction Indicator Light
(MIL) symbol come on as part of a normal bulb check. 3. Approximately 15 seconds later, one of two things will
happen:
 The MIL will flash for about 10 seconds and then
return to being fully illuminated until you turn OFF
the ignition or start the engine. This means that
your vehicle's OBD II system is not ready and you
should not proceed to the I/M station.
 The MIL will not flash at all and will remain fully illu -
minated until you place the ignition in the off posi -
tion or start the engine. This means that your
vehicle's OBD II system is ready and you can
proceed to the I/M station.
If your OBD II system is not ready, you should see an
authorized dealer or repair facility. If your vehicle was
recently serviced or had a battery failure or replacement,
you may need to do nothing more than drive your vehicle
as you normally would in order for your OBD II system to
update. A recheck with the previously mentioned test
routine may then indicate that the system is now ready.
Regardless of whether your vehicle's OBD II system is
ready or not, if the MIL is illuminated during normal vehicle
operation you should have your vehicle serviced before
going to the I/M station. The I/M station can fail your
vehicle because the MIL is on with the engine running.
WARNING!
 ONLY an authorized service technician should
connect equipment to the OBD II connection port in
order to read the VIN, diagnose, or service your
vehicle.
 If unauthorized equipment is connected to the OBD II
connection port, such as a driver-behavior tracking
device, 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.
 Access, or allow others to access, information
stored in your vehicle systems, including
personal information.

23_WS_OM_EN_USC_t.book Page 118

STARTING AND OPERATING123
The EPB switch is located on the instrument panel to the
left of the steering wheel (below the headlamp switch).

Electric Park Brake Switch

To apply the parking brake manually, pull up on the switch
momentarily. You may hear a sound from the back of the
vehicle while the parking brake engages. Once the parking
brake is fully engaged, the Brake Warning Light in the
instrument cluster and an indicator on the switch will
illuminate. If your foot is on the brake pedal while you
apply the parking brake, you may notice a small amount of
brake pedal movement. The parking brake can be applied
even when the ignition switch is OFF but the Brake
Warning Light will not illuminate, however, it can only be
released when the ignition is in the ON/RUN position.
NOTE:The EPB Warning Light will illuminate if the EPB switch is
held for longer than 20 seconds in either the released or
applied position. The light will extinguish upon releasing
the switch. If the Auto Park Brake feature is enabled, the parking
brake will automatically engage whenever the
transmission is placed in PARK. If your foot is on the brake
pedal, you may notice a small amount of brake pedal
movement while the parking brake is engaging.
The parking brake will release automatically when the
ignition is ON, the transmission is in DRIVE or REVERSE,
the driver’s seat belt is buckled, and an attempt is made
to drive away.
To release the parking brake manually, the ignition switch
must be in the ON/RUN position. Put your foot on the
brake pedal, then push the EPB switch down momentarily.
You may hear a sound from the back of the vehicle while
the parking brake disengages. You may also notice a small
amount of movement in the brake pedal. Once the parking
brake is fully disengaged, the Brake Warning Light in the
instrument cluster and the LED indicator on the switch will
extinguish.
NOTE:When parking on a hill, it is important to turn the front
wheels toward the curb on a downhill grade and away from
the curb on an uphill grade. Apply the parking brake before
placing the gear selector in PARK, otherwise the load on
the transmission locking mechanism may make it difficult
to move the gear selector out of PARK.
WARNING!

Never use the PARK position as a substitute for the
parking brake. Always apply the parking brake fully
when parked to guard against vehicle movement and
possible injury or damage.
 When exiting the vehicle, always turn the ignition off,
secure the key fob, and lock your vehicle.
 Never leave children alone in a vehicle, or with
access to an unlocked vehicle. Allowing children to
be in a vehicle unattended is dangerous for a
number of reasons. A child or others could be seri -
ously or fatally injured. Children should be warned
not to touch the parking brake, brake pedal or the
gear selector.
 Do not leave the key fob in or near the vehicle, or in
a location accessible to children, and do not leave a
vehicle equipped with Keyless Enter ‘n Go™ in the
ON/RUN position. A child could operate power
windows, other controls, or move the vehicle.
 Be sure the parking brake is fully disengaged before
driving; failure to do so can lead to a brake failure
and a collision.
 Always fully apply the parking brake when leaving
your vehicle, or it may roll and cause damage or
injury. Also be certain to leave the transmission in
PARK. Failure to do so may allow the vehicle to roll
and cause damage or injury.
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