2023 JEEP WRANGLER ECO mode

SERVICING AND MAINTENANCE329
Coolant Checks
Check the engine, battery (if equipped), intercooler (if
equipped), and Motor Generator Unit (MGU) (if equipped)
coolant (antifreeze) protection every 12 months (before
the onset of freezing weather, where applicable). If the
engine, battery (if equipped), intercooler (if equipped), and
MGU (if equipped) coolant is dirty or rusty in appearance,
the system should be drained, flushed and refilled with
fresh OAT coolant (conforming to MS.90032) by an
authorized dealer. Check the front of the A/C condenser (if
equipped) or radiator for any accumulation of bugs,
leaves, etc. If dirty, clean by gently spraying water from a
garden hose vertically down the face of the A/C condenser
(if equipped) or the back of the radiator core.
Check the engine, battery (if equipped), intercooler (if
equipped), and MGU (if equipped) cooling system hoses
for brittle rubber, cracking, tears, cuts, and tightness of
the connection at the coolant recovery bottle and radiator.
Inspect the entire system for leaks. DO NOT REMOVE THE
COOLANT PRESSURE CAP WHEN THE COOLING SYSTEM IS
HOT.
Cooling System — Drain, Flush And Refill
NOTE:Some vehicles require special tools to add coolant
properly. Failure to fill these systems properly could lead to severe internal engine damage. If any coolant is needed
to be added to the system please contact an authorized
dealer.
If the engine coolant (antifreeze) is dirty or contains visible
sediment, have an authorized dealer clean and flush with
OAT coolant (conforming to MS.90032).
For the proper maintenance intervals, see
Úpage 307 for
gasoline engines or Úpage 311 for diesel engines.
Selection Of Coolant
For further information Úpage 374.
NOTE:
 Mixing of engine coolant (antifreeze) other than speci-
fied Organic Additive Technology (OAT) engine coolant,
may result in engine damage and may decrease corro -
sion protection. OAT engine coolant is different and
should not be mixed with Hybrid Organic Additive Tech -
nology (HOAT) engine coolant or any “globally compat -
ible” coolant. If a non-OAT engine coolant is introduced
into the cooling system in an emergency, the cooling
system will need to be drained, flushed, and refilled
with fresh OAT coolant (conforming to MS.90032), by
an authorized dealer as soon as possible.
 Do not use water alone or alcohol-based engine
coolant (antifreeze) products. Do not use additional
rust inhibitors or anti-rust products, as they may not be
compatible with the radiator engine coolant and may
plug the radiator.
 This vehicle has not been designed for use with
propylene glycol-based engine coolant. Use of
propylene glycol-based engine coolant is not recom -
mended. 
Some vehicles require special tools to add coolant
properly. Failure to fill these systems properly could
lead to severe internal engine damage. If any coolant is
needed to be added to the system please contact an
authorized dealer.
Adding Coolant

Your vehicle has been built with an improved engine coolant
(OAT coolant conforming to MS.90032) that allows
extended maintenance intervals. This engine coolant
(antifreeze) can be used up to 10 years or 150,000 miles
(240,000 km) before replacement. To prevent reducing this
extended maintenance period, it is important to use the
same engine coolant (OAT coolant conforming to
MS.90032) throughout the life of your vehicle.

Please review these recommendations for using Organic
Additive Technology (OAT) engine coolant that meets the
requirements of the manufacturer Material Standard
MS.90032. When adding engine coolant (antifreeze):
We recommend using Mopar® Antifreeze/Coolant
10 Year/150,000 Mile (240,000 km) Formula OAT
(Organic Additive Technology) that meets the require -
ments of the manufacturer Material Standard
MS.90032.
 Mix a minimum solution of 50% OAT engine coolant
that meets the requirements of the manufacturer
Material Standard MS.90032 and distilled water. Use
higher concentrations (not to exceed 70%) if tempera -
tures below −34°F (−37°C) are anticipated. Please
contact an authorized dealer for assistance.
 Use only high purity water such as distilled or deionized
water when mixing the water/engine coolant solution.
The use of lower quality water will reduce the amount
of corrosion protection in the engine cooling system.

When working near the radiator cooling fan, discon -
nect the fan motor lead or turn the ignition to the OFF
mode. The fan is temperature controlled and can
start at any time the ignition is in the ON mode.
WARNING!
8

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SERVICING AND MAINTENANCE353
Example: If garage temperature = 68°F (20°C) and the
outside temperature = 32°F (0°C) then the cold tire
inflation pressure should be increased by 3 psi (21 kPa),
which equals 1 psi (7 kPa) for every 12°F (7°C) for this
outside temperature condition.
Tire pressure may increase from 2 to 6 psi (13 to 40 kPa)
during operation. DO NOT reduce this normal pressure
build up or your tire pressure will be too low.
Tire Pressures For High Speed Operation
The manufacturer advocates driving at safe speeds and
within posted speed limits. Where speed limits or
conditions are such that the vehicle can be driven at high
speeds, maintaining correct tire inflation pressure is very
important. Increased tire pressure and reduced vehicle
loading may be required for high-speed vehicle operation.
Refer to an authorized tire dealer or original equipment
vehicle dealer for recommended safe operating speeds,
loading and cold tire inflation pressures.
Radial Ply Tires
Tire Repair
If your tire becomes damaged, it may be repaired if it
meets the following criteria:
The tire has not been driven on when flat.
 The damage is only on the tread section of your tire
(sidewall damage is not repairable).
 The puncture is no greater than ¼ of an inch (6 mm).
Consult an authorized tire dealer for tire repairs and
additional information.
Damaged Run Flat tires, or Run Flat tires that have
experienced a loss of pressure should be replaced
immediately with another Run Flat tire of identical size and
service description (Load Index and Speed Symbol).
Replace the tire pressure sensor as well as it is not
designed to be reused.
Run Flat Tires — If Equipped
Run Flat tires allow you the capability to drive 50 miles
(80 km) at 50 mph (80 km/h) after a rapid loss of inflation
pressure. This rapid loss of inflation is referred to as the
Run Flat mode. A Run Flat mode occurs when the tire
inflation pressure is of/or below 14 psi (96 kPa). Once a
Run Flat tire reaches the run flat mode it has limited driving capabilities and needs to be replaced immediately.
A Run Flat tire is not repairable. When a Run Flat tire is
changed after being driven in a Run Flat mode 14 psi
(96 kPa) condition, please replace the TPMS sensor as it
is not designed to be reused.
NOTE:TPMS sensor must be replaced after driving the vehicle on
a flat tire condition.
It is not recommended driving a vehicle loaded at full
capacity or to tow a trailer while a tire is in the Run Flat
mode.
See the Tire Pressure Monitoring System section for more
information.
Tire Spinning
When stuck in mud, sand, snow, or ice conditions, do not
spin your vehicle's wheels above 30 mph (48 km/h) or for
longer than 30 seconds continuously without stopping.
For further information
Úpage 302.WARNING!
High speed driving with your vehicle under maximum
load is dangerous. The added strain on your tires could
cause them to fail. You could have a serious collision.
Do not drive a vehicle loaded to the maximum capacity
at continuous speeds above 75 mph (120 km/h).
WARNING!
Combining radial ply tires with other types of tires on
your vehicle will cause your vehicle to handle poorly.
The instability could cause a collision. Always use radial
ply tires in sets of four. Never combine them with other
types of tires.
WARNING!
Fast spinning tires can be dangerous. Forces generated
by excessive wheel speeds may cause tire damage or
failure. A tire could explode and injure someone. Do not
spin your vehicle's wheels faster than 30 mph
(48 km/h) for more than 30 seconds continuously
when you are stuck, and do not let anyone near a spin
-
ning wheel, no matter what the speed.8

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360SERVICING AND MAINTENANCE
If you are storing your vehicle for more than three weeks,
we recommend that you take the following steps to
minimize the drain on your vehicle's battery:
Disconnect the negative cable from battery.
 If your vehicle is equipped with Stop/Start system then
disconnect both the main and supplemental negative
battery cables.
 Any time you store your vehicle or keep it out of service
(i.e., vacation) for two weeks or more, run the air condi -
tioning system at idle for about five minutes in the
fresh air and high blower setting. This will ensure
adequate system lubrication to minimize the possibility
of compressor damage when the system is started
again.
 If assistance is needed to disconnect the battery
system, see an authorized dealer.

Battery Cable Disconnect

NOTE:
You must isolate the supplemental battery connection
point, as well as the main battery terminal from the
post, as shown in the image, to fully de-energize both
batteries for storage. If assistance is needed to discon -
nect the battery system, see an authorized dealer.
 Do not disconnect the Intelligent Battery Sensor (IBS),
or your Stop/Start system may not function for up to 24
hours, due to the IBS being set into learn mode.
BODYWORK
PROTECTION FROM ATMOSPHERIC
A
GENTS
Vehicle body care requirements vary according to
geographic locations and usage. Chemicals that make
roads passable in snow and ice and those that are
sprayed on trees and road surfaces during other seasons
are highly corrosive to the metal in your vehicle. Outside
parking, which exposes your vehicle to airborne
contaminants, road surfaces on which the vehicle is
operated, extreme hot or cold weather and other extreme
conditions will have an adverse effect on paint, metal trim,
and underbody protection.
The following maintenance recommendations will enable
you to obtain maximum benefit from the corrosion
resistance built into your vehicle.
What Causes Corrosion?
Corrosion is the result of deterioration or removal of paint
and protective coatings from your vehicle.
The most common causes are:
 Road salt, dirt and moisture accumulation.
 Stone and gravel impact.
 Insects, tree sap and tar.
 Salt in the air near seacoast localities.
 Atmospheric fallout/industrial pollutants.
CAUTION!
If the negative battery cables are not isolated properly it
can cause a potential power spike or surge in the
system, resulting in damage to essential electrical
components.
1 — Supplemental Negative Battery Cable
2 — Main Negative Battery Cable
3 — Main Negative Battery Terminal
4 — Intelligent Battery Sensor (IBS)

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SERVICING AND MAINTENANCE363
CARPET REMOVAL
Front Carpets (Two And Four Door Models):

1. Remove the front grommets.

Front Carpet

2. Pull the carpet out from the front to the rear.

Front Carpet Pulled Away

3. Remove the grommets under the front seat. First for
the rear carpet and then the front carpet.

Front And Rear Carpet Split

4. Under the back of the front seat, open the carpet split and then pull out the rear edge and slide the carpet
to the front (do not remove the harness).

Rear Underside Of Front Seat Carpet Split

WARNING!
If operating the vehicle without carpet in place the
floor may become hot, and there is a risk of burns.
 An improperly attached, damaged, folded, or
damaged grommets may cause your carpet to inter -
fere with the accelerator, brake, or clutch pedals and
cause a loss of vehicle control. To prevent SERIOUS
INJURY or DEATH: ALWAYS securely attach your
carpet using the grommets.
 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 carpet (e.g.,
towels, keys, etc.). These objects could change the
position of the carpet and may cause interference
with the accelerator, brake, or clutch pedals.
 ONLY install carpet designed to fit your vehicle.
NEVER install carpet that cannot be properly
attached and secured to your vehicle. If the carpet
needs to be replaced, only use manufacturer
approved carpet for the specific make, model, and
year of your vehicle.
 If the vehicle carpet has been removed and
re-installed, always properly attach carpet to the floor
and check that 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.
1 — Grommets
8

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370TECHNICAL SPECIFICATIONS
GASOLINE/OXYGENATE BLENDS
Some fuel suppliers blend unleaded gasoline with
oxygenates such as ethanol.
Problems that result from using gasoline containing more
than 15% ethanol (E-15) or gasoline containing methanol
are not the responsibility of the manufacturer and may
void or not be covered under New Vehicle Limited
Warranty.
DO NOT USE E-85 IN NON-FLEX FUEL
V
EHICLES
Non-Flex Fuel Vehicles (FFV) are compatible with gasoline
containing up to 15% ethanol (E-15). Use of gasoline with
higher ethanol content may void the New Vehicle Limited
Warranty.
If a Non-FFV vehicle is inadvertently fueled with E-85 fuel,
the engine will have some or all of these symptoms:
 Operate in a lean mode
 OBD II Malfunction Indicator Light on 
Poor engine performance
 Poor cold start and cold drivability
 Increased risk for fuel system component corrosion
CNG AND LP FUEL SYSTEM
M
ODIFICATIONS
Modifications that allow the engine to run on Compressed
Natural Gas (CNG) or Liquid Propane (LP) may result in
damage to the engine, emissions, and fuel system
components. Problems that result from running CNG or LP
are not the responsibility of the manufacturer and may
void or not be covered under the New Vehicle Limited
Warranty.
MMT IN GASOLINE
Methylcyclopentadienyl Manganese Tricarbonyl (MMT) is
a manganese-containing metallic additive that is blended
into some gasolines to increase octane. Gasoline blended
with MMT provides no performance advantage beyond
gasoline of the same octane number without MMT.
Gasoline blended with MMT reduces spark plug life and
reduces emissions system performance in some vehicles.
The manufacturer recommends that gasoline without
MMT be used in your vehicle. The MMT content of gasoline
may not be indicated on the gasoline pump; therefore, you
should ask your gasoline retailer whether the gasoline
contains MMT. MMT is prohibited in Federal and California
reformulated gasoline.
FUEL SYSTEM CAUTIONS
NOTE:Intentional tampering with the emissions control system
can result in civil penalties being assessed against you.
CAUTION!
DO NOT use E-85, gasoline containing methanol, or
gasoline containing more than 15% ethanol (E-15). Use
of these blends may result in starting and drivability
problems, damage critical fuel system components,
cause emissions to exceed the applicable standard,
and/or cause the Malfunction Indicator Light to
illuminate. Please observe pump labels as they should
clearly communicate if a fuel contains greater than
15% ethanol (E-15).
CAUTION!
Follow these guidelines to maintain your vehicle’s
performance:
 The use of leaded gasoline is prohibited by Federal
law. Using leaded gasoline can impair engine perfor -
mance and damage the emissions control system.
 An out-of-tune engine or certain fuel or ignition
malfunctions can cause the catalytic converter to
overheat. If you notice a pungent burning odor or
some light smoke, your engine may be out of tune or
malfunctioning and may require immediate service.
Contact an authorized dealer for service assistance.
 The use of fuel additives, which are now being sold
as octane enhancers, is not recommended. Most of
these products contain high concentrations of meth -
anol. Fuel system damage or vehicle performance
problems resulting from the use of such fuels or addi -
tives is not the responsibility of the manufacturer
and may void or not be covered under the New
Vehicle Limited Warranty.

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TECHNICAL SPECIFICATIONS373
FLUID CAPACITIES
USMetric
Fuel (Approximate)
Two Door Models 17.5 gal66 L
Four Door Models 21.5 gal81 L
3.0L Diesel Engine 18.3 gal69 L
Diesel Exhaust Fluid Tank 5.1 gal19.3 L
Engine Oil with Filter
2.0L Engine 5 qt4.73 L
3.6L Engine 5 qt4.73 L
3.0L Diesel Engine 9 qt8.5 L
Cooling System *
2.0L Engine 11.8 qt11.2 L
2.0L Engine Intercooler 3.7 qt3.5 L
3.6L Engine 13.4 qt12.7 L
3.6L Motor Generator Unit (MGU) 2.3 qt2.2 L
3.6L Power Pack Unit (PPU) Coolant 3.1 qt2.9 L
3.0L Diesel Engine 14 qt13.2 L
* Includes coolant recovery bottle filled to MAX level.9

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376TECHNICAL SPECIFICATIONS
CHASSIS FLUIDS AND LUBRICANTS
Fuel Selection — 3.0L Diesel Engine Use good quality diesel fuel from a reputable supplier in your vehicle. Federal law
requires that you must fuel this vehicle with Ultra Low Sulfur Highway Diesel fuel (15 ppm
Sulfur maximum) and prohibits the use of Low Sulfur Highway Diesel fuel (500 ppm
Sulfur maximum) to avoid damage to the emissions control system. For most year-round
service, Number 2 diesel fuel meeting ASTM specification D-975 Grade S15 will provide
good performance. We recommend using a blend of up to 5% biodiesel, meeting ASTM
specification D-975 with your diesel engine.
This vehicle is compatible with biodiesel blends greater than 5% but no greater than 20%
biodiesel meeting ASTM specification D-7467 provided the shortened maintenance
intervals are followed as directed.
Diesel Exhaust Fluid — 3.0L Diesel Engine Mopar® Diesel Exhaust Fluid (DEF) (API Certified) or equivalent that has been API
Certified to the ISO 22241 standard. Use of fluids not API Certified to ISO 22241 may
result in system damage.
Component
Fluid, Lubricant, or Genuine Part
Automatic Transmission – If Equipped Use only Mopar® ZF 8 & 9 Speed Automatic Transmission Fluid (ATF) or equivalent.
Failure to use the correct fluid may affect the function or performance of your
transmission.
Manual Transmission – If Equipped We recommend using Mopar® ATF+4 Automatic Transmission Fluid.
Transfer Case We recommend using Mopar® ATF+4 Automatic Transmission Fluid.
Front Axle Differential We recommend using Mopar® Gear & Axle Lubricant (SAE 75W85)(API GL-5).
Rear Axle Differential (M200 Sales Code DRZ) We recommend using Mopar® Gear & Axle Lubricant (SAE 75W140)(API GL-5).
Rear Axle Differential (M220 Sales Codes DRE/DRF) We recommend using Mopar® Gear & Axle Lubricant (SAE 75W85)(API GL-5). Models
equipped with Trac-Lok Limited Slip Differential require a friction modifier additive.
Brake Master Cylinder We recommend using Mopar® DOT 3 Brake Fluid, SAE J1709.
Power Steering Reservoir We recommend using Mopar® Electric Steering Pump Fluid.
ComponentFluid, Lubricant, or Genuine Part

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382
INDEX
AAbout Your Brakes ....................................................... 368
Adaptive Cruise Control (ACC)
(Cruise Control) ................................................... 151
, 152
Adding Engine Coolant (Antifreeze) ............................ 329
Adding Fuel.......................................................... 165
, 166
Additives, Fuel .............................................................. 369
Advance Phone Connectivity ....................................... 220
Air Bag Air Bag Operation.................................................... 269
Air Bag Warning Light .................................... 267
, 269
Enhanced Accident Response ...................... 276, 305
Event Data Recorder (EDR).................................... 305 Front Air Bag .................................................. 268
, 269
If Deployment Occurs ............................................. 275
Knee Impact Bolsters ............................................. 274
Maintaining Your Air Bag System .......................... 277
Maintenance ........................................................... 277
Redundant Air Bag Warning Light ......................... 267
Transporting Pets.................................................... 288
Air Bag Light ...............................................117
, 267, 289
Air Cleaner, Engine (Engine Air Cleaner Filter) ........... 319
Air Conditioner Maintenance ...................................... 324
Air Conditioner Refrigerant ................................. 324
, 325
Air Conditioner System ................................................ 324
Air Conditioning Filter ........................................... 59
, 325
Air Conditioning System..................................................59 Air Conditioning, Operating Tips ..................................... 59Air Filter......................................................................... 319
Air Pressure Tires ......................................................................... 352 Alarm
Arm The System......................................................... 20
Disarm The System ................................................... 20
Security Alarm...................................................19
, 119
Alterations/Modifications Vehicle.......................................................................... 8
Android Auto........................................................ 222
, 223
Android Auto™
S
....................................................... 222
Antifreeze (Engine Coolant) ............................... 329, 373
Disposal ...................................................................330
Anti-Lock Brake System (ABS) ..................................... 244
Anti-Lock Warning Light................................................ 119
Apple CarPlay ...................................................... 222
, 225
Apple CarPlay®
S
...................................................... 224
Assist, Hill Start ............................................................. 249
Audio Settings ............................................................... 208
Audio Systems (Radio) ................................................. 184
Auto Down Power Windows............................................ 66
Automatic Dimming Mirror ............................................. 45 Automatic Door Locks .................................................... 23Automatic Headlights ..................................................... 51Automatic High Beams ................................................... 51
Automatic Temperature Control (ATC) .......................... 59
Automatic Transmission ............................................... 138 Adding Fluid ............................................................. 333
Fluid And Filter Change ...........................................333
Fluid Change ............................................................333Fluid Level Check ....................................................333Fluid Type ....................................................... 333
, 376
Gear Ranges ............................................................138 Special Additives ..................................................... 333 Automatic Transmission Limp Home Mode ............... 139
AutoPark ....................................................................... 127
Auxiliary Electrical Outlet (Power Outlet) ...................... 62
Auxiliary Power Outlet .................................................... 62
Auxiliary Switches ........................................................... 64
Axle Fluid....................................................................... 376
Axle Lock ....................................................................... 144
BBattery..................................................................117, 317
Charging System Light ............................................ 117
Keyless Key Fob Replacement................................. 14
Belts, Seat..................................................................... 288
Blind Spot Monitoring .................................................. 252
Bluetooth Connecting To A Particular Mobile Phone OrAudio Device After Pairing ................................. 216
Body Mechanism Lubrication ...................................... 326
B-Pillar Location ........................................................... 349
Brake Assist System..................................................... 245
Brake Control System .................................................. 245
Brake Fluid...........................................................331
, 376
Brake System ......................................................331, 368
Anti-Lock (ABS) ........................................................ 368 Fluid Check .............................................................. 331Master Cylinder ....................................................... 331Parking..................................................................... 133Warning Light .......................................................... 117
Brake/Transmission Interlock ..................................... 138

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