2023 JEEP WRANGLER ECO mode

126
STARTING AND OPERATING
STARTING THE ENGINE — GASOLINE
ENGINE (IF EQUIPPED)
Before starting your vehicle, adjust your seat, adjust both
inside and outside mirrors, and fasten your seat belts.
MANUAL TRANSMISSION — IF EQUIPPED
Apply the parking brake, place the gear selector in
NEUTRAL, and press the clutch pedal before starting the
vehicle. This vehicle is equipped with a clutch interlocking
ignition system. It will not start unless the clutch pedal is
pressed to the floor.
Four-Wheel Drive Models Only
In 4L mode, if the vehicle is stalled, the engine will start
regardless of whether or not the clutch pedal is pressed to
the floor. This feature enhances off-road performance by
allowing the vehicle to start when in 4L without having to
press the clutch pedal. The 4L Indicator Light will
illuminate when the transfer case has been shifted into
this mode.
AUTOMATIC TRANSMISSION —
I
F EQUIPPED
Start the vehicle with the gear selector in the PARK
position (vehicle can also be started in NEUTRAL). Apply
the brake before shifting to any driving range.
NORMAL STARTING
To Turn On The Engine Using The ENGINE START/STOP
Button

1. The transmission must be in PARK or NEUTRAL.

2. Press and hold the brake pedal while pushing the
ENGINE START/STOP button once. 3. The system takes over and attempts to start the
vehicle. If the vehicle fails to start, the starter will
disengage automatically after 10 seconds.
4. If you wish to stop the cranking of the engine prior to the engine starting, push the button again.
NOTE:Normal starting of either a cold or a warm engine is
obtained without pumping or pressing the accelerator
pedal.
To Turn Off The Engine Using The ENGINE START/STOP
Button

1. Place the gear selector in PARK, then push and release the ENGINE START/STOP button.

2. The ignition will return to the OFF position.
3. If the gear selector is not in PARK (with vehicle stopped) and the ENGINE START/STOP button is
pushed once, the transmission will automatically
select PARK and the engine will turn off while the
ignition will remain in the ACC position (NOT the OFF
position). Never leave a vehicle out of the PARK
position, or it could roll.
4. If the gear selector is in NEUTRAL, and the vehicle speed is below 5 mph (8 km/h), pushing the START/
STOP button once will turn the engine off. The ignition
will remain in the ACC position.
5. If the vehicle speed is above 5 mph (8 km/h), the ENGINE START/STOP button must be held for two WARNING!
When exiting the vehicle, always remove the key fob
from the ignition 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 seriously 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. A child could
operate power windows, other controls, or move the
vehicle.
 Do not leave children or animals inside parked vehi -
cles in hot weather. Interior heat buildup may cause
serious injury or death.

23_JL_OM_EN_USC_t.book Page 126

STARTING AND OPERATING131
COLD WEATHER PRECAUTIONS
Operation in ambient temperature below 32°F (0°C) may
require special considerations. The following charts
suggest these options:
Fuel Operating Range
NOTE:Use Ultra Low Sulfur Diesel (ULSD) Fuels ONLY.

Fuel Operating Range Chart

*Number 1 ULSD Fuel should only be used where extended arctic
conditions 0°F (-18°C) exist.
NOTE:
Use of Climatized ULSD Fuel or Number 1 ULSD Fuel
results in a noticeable decrease in fuel economy.
 Climatized ULSD Fuel is a blend of Number 2 ULSD
Fuel and Number 1 ULSD Fuel which reduces the
temperature at which wax crystals form in fuel.
 The fuel grade should be clearly marked on the pump
at the fuel station.
 The engine requires the use of Ultra Low Sulfur Diesel
Fuel . Use of incorrect fuel could result in engine and
exhaust system damage
Úpage 371.
 If climatized or Number 1 ULSD Fuel is not available,
and you are operating below 20°F (-6°C), in sustained
arctic conditions, Mopar® Premium Diesel Fuel Treat -
ment (or equivalent) is recommended to avoid gelling
(see Fuel Operating Range Chart).
Engine Oil Usage
See Engine Fluids and Lubricants for the correct engine oil
viscosity Úpage 374.
Winter Front Cover
A Winter front or cold weather cover can be used in
ambient temperatures below 32°F (0°C), especially
during extended idle conditions. This cover is equipped
with four flaps for managing total grille opening in varying
ambient temperatures. If a Winter front or cold weather
cover is to be used, the flaps should be in the full open
position to allow air flow to the cooling module and automatic transmission oil cooler. When ambient
temperatures drop below 0°F (-17°C) the four flaps need
to be closed. A suitable cold weather cover is available
from a Mopar® dealer.
Engine Warm-Up
Avoid full throttle operation when the engine is cold. When
starting a cold engine, bring the engine up to operating
speed slowly to allow the oil pressure to stabilize as the
engine warms up.
If temperatures are below 32°F (0°C), operate the engine
at moderate speeds for five minutes before full loads are
applied.
ENGINE IDLING
Avoid prolonged idling. Long periods of idling may be
harmful to your engine because combustion chamber
temperatures can drop so low that the fuel may not burn
completely. Incomplete combustion allows carbon and
varnish to form on piston rings, cylinder head valves, and
injector nozzles. Also, the unburned fuel can enter the
crankcase, diluting the oil and causing rapid wear to the
engine.
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STARTING AND OPERATING133
Do Not Operate The Engine With Failed
Parts
All engine failures give some warning before the parts fail.
Be on the alert for changes in performance, sounds, and
visual evidence that the engine requires service. Some
important clues are:
Engine misfiring or vibrating severely
 Sudden loss of power
 Unusual engine noises
 Fuel, oil or coolant leaks
 Sudden change, outside the normal operating range, in
the engine operating temperature
 Excessive smoke
 Oil pressure drop
ENGINE BREAK-IN RECOMMENDATIONS —
GASOLINE ENGINE (IF EQUIPPED)
A long break-in period is not required for the engine and
drivetrain (transmission and axle) in your vehicle.
Drive moderately during the first 300 miles (500 km).
After the initial 60 miles (100 km), speeds up to 50 or
55 mph (80 or 90 km/h) are desirable.
While cruising, brief full-throttle acceleration within the
limits of local traffic laws contributes to a good break-in.
Wide-open throttle acceleration in low gear can be
detrimental and should be avoided.
The engine oil installed in the engine at the factory is a
high-quality energy conserving type lubricant. Oil changes
should be consistent with anticipated climate conditions
under which vehicle operations will occur. For the recommended viscosity and quality grades
Úpage 374.
NOTE:A new engine may consume some oil during its first few
thousand miles (kilometers) of operation. This should be
considered a normal part of the break-in and not inter
-
preted as a problem.
ENGINE BREAK-IN RECOMMENDATIONS —
DIESEL ENGINE (IF EQUIPPED)
The diesel engine does not require a break-in period due
to its construction. Normal operation is allowed, providing
the following recommendations are followed:
 Warm up the engine before placing it under load.
 Do not operate the engine at idle for prolonged periods.
 Use the appropriate transmission gear to prevent
engine lugging.
 Observe vehicle oil pressure and temperature indica -
tors.
 Check the coolant and oil levels frequently.
 Vary throttle position at highway speeds when carrying
or towing significant weight.
NOTE:Light duty operation such as light trailer towing or no load
operation will extend the time before the engine is at full
efficiency. Reduced fuel economy and power may be seen
at this time.
The engine oil installed in the engine at the factory is a
high-quality energy conserving type lubricant. Oil changes
should be consistent with anticipated climate conditions
under which vehicle operations will occur. For
recommended viscosity and quality grades see
Úpage 374. NON-DETERGENT OR STRAIGHT MINERAL
OILS MUST NEVER BE USED.
PARKING BRAKE
Before exiting the vehicle, make sure that the parking
brake is fully applied. Also, be certain to leave an
automatic transmission in PARK, or manual transmission
in REVERSE or FIRST gear.
The parking brake lever is located in the center console.
To apply the parking brake, pull the lever up as firmly as
possible. To release the parking brake, pull the lever up
slightly, push the center button, then lower the lever
completely.
CAUTION!
Never use Non-Detergent Oil or Straight Mineral Oil in
the engine or damage may result.
4

23_JL_OM_EN_USC_t.book Page 133

STARTING AND OPERATING139
The following indicators should be used to ensure that you
have properly engaged the transmission into the PARK
position:
When shifting into PARK, push the lock button on the
gear selector and firmly move the gear selector all the
way forward until it stops and is fully seated.
 Look at the transmission gear position display and
verify that it indicates the PARK position (P), and is not
blinking.
 With the brake pedal released, verify that the gear
selector will not move out of PARK.
REVERSE (R)
This range is for moving the vehicle backward. Shift into
REVERSE only after the vehicle has come to a complete
stop.
NEUTRAL (N)
Use this range when the vehicle is standing for prolonged
periods with the engine running. Apply the parking brake
and shift the transmission into PARK if you must exit the
vehicle. DRIVE (D)
This range should be used for most city and highway
driving. It provides the smoothest upshifts and downshifts,
and the best fuel economy. The transmission
automatically upshifts through all forward gears. The
DRIVE position should be used for all normal operating
conditions.
When frequent transmission shifting occurs (such as
when operating the vehicle under heavy loading
conditions, in hilly terrain, traveling into strong head
winds, or while towing a heavy trailer), use the AutoStick
shift control to select a lower gear
Úpage 140. Under these conditions, using a lower gear will improve
performance and extend transmission life by reducing
excessive shifting and heat buildup.
During extremely cold temperatures (-22°F [-30°C] or
below), transmission operation may be modified
depending on engine and transmission temperature as
well as vehicle speed. Normal operation will resume once
the transmission temperature has risen to a suitable level.
MANUAL (M)
The MANUAL (M, +/-) position (beside the DRIVE position)
enables full manual control of transmission shifting also
known as AutoStick mode. Toggling the gear selector
forward (-) or rearward (+) while in the MANUAL (AutoStick)
position will manually select the transmission gear, and
will display the current gear in the instrument cluster
Úpage 140.
Transmission Limp Home Mode
Transmission function is monitored electronically for
abnormal conditions. If a condition is detected that could
result in transmission damage, Transmission Limp Home
mode is activated. In this mode, the transmission may
operate only in certain gears, or may not shift at all.
Vehicle performance may be severely degraded and the
engine may stall. In some situations, the transmission may
not re-engage if the engine is turned off and restarted. The
Malfunction Indicator Light (MIL) may be illuminated. A
message in the instrument cluster will inform the driver of
the more serious conditions, and indicate what actions
may be necessary.
CAUTION!

Before moving the transmission gear selector out of
PARK, you must start the engine, and also press the
brake pedal. Otherwise, damage to the gear selector
could result.
 DO NOT race the engine when shifting from PARK or
NEUTRAL into another gear range, as this can
damage the drivetrain.
WARNING!
Do not coast in NEUTRAL and never turn off the ignition
to coast down a hill. These are unsafe practices that
limit your response to changing traffic or road
conditions. You might lose control of the vehicle and
have a collision.
CAUTION!
Towing the vehicle, coasting, or driving for any other
reason with the transmission in NEUTRAL can cause
severe transmission damage.
 For Recreational Towing
Úpage 176.
 For Towing A Disabled Vehicle
Úpage 303.
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140STARTING AND OPERATING
In the event of a momentary problem, the transmission
can be reset to regain all forward gears by performing the
following steps:
NOTE:
In cases where the instrument cluster message indi -
cates the transmission may not re-engage after engine
shutdown, perform this procedure only in a desired
location (preferably, at an authorized dealer).
 Even if the transmission can be reset, we recommend
that you visit an authorized dealer at your earliest
possible convenience. An authorized dealer has diag-
nostic equipment to assess the condition of your trans -
mission.
 If the transmission cannot be reset, authorized dealer
service is required.

1. Stop the vehicle.

2. Shift the transmission into PARK, if possible. If not, shift the transmission to NEUTRAL.
3. Push and hold the ignition switch until the engine turns off.
4. Wait approximately 30 seconds.
5. Restart the engine.
6. Shift into the desired gear range. If the problem is no longer detected, the transmission will return to
normal operation.
AutoStick
AutoStick is a driver-interactive transmission feature
providing manual shift control, giving you more control of
the vehicle. AutoStick allows you to maximize engine
braking, eliminate undesirable upshifts and downshifts, and improve overall vehicle performance. This feature can
also provide you with more control during passing, city
driving, cold slippery conditions, mountain driving, trailer
towing, and many other situations.
Operation
To activate AutoStick mode, move the gear selector into
the MANUAL (M) position (beside the DRIVE position). The
current transmission gear will be displayed in the
instrument cluster. In AutoStick mode, you can use the
gear selector (in the MANUAL position) to manually shift
the transmission.
AutoStick mode has the following operational benefits:

The transmission will automatically downshift as the
vehicle slows (to prevent engine lugging) and will
display the current gear.
 The transmission will automatically downshift to FIRST
gear when coming to a stop. After a stop, the driver
should manually upshift (+) the transmission as the
vehicle is accelerated.
 You can start out, from a stop, in FIRST or SECOND gear
(or THIRD gear, in 4L range). Tapping (+) (at a stop) will
allow starting in SECOND gear. Starting out in SECOND
or THIRD gear can be helpful in snowy or icy conditions.
 If a requested downshift would cause the engine to
overspeed, that shift will not occur.
 The system will ignore attempts to upshift at too low of
a vehicle speed.
 Holding the gear selector in the (-) position will down -
shift the transmission to the lowest gear possible at the
current speed. 
Transmission shifting will be more noticeable when
AutoStick is enabled.
 The system may revert to automatic shift mode if a
fault or overheat condition is detected.
NOTE:When Hill Descent Control is enabled, AutoStick is not
active.
To disengage AutoStick mode, return the gear selector to
the DRIVE position. You can shift in or out of the AutoStick
position at any time without taking your foot off the
accelerator pedal.
FOUR–WHEEL DRIVE OPERATION
WARNING!
Do not downshift for additional engine braking on a
slippery surface. The drive wheels could lose their grip
and the vehicle could skid, causing a collision or
personal injury.
WARNING!
Failure to engage a transfer case position completely
can cause transfer case damage or loss of power and
vehicle control. You could have a collision. Do not drive
the vehicle unless the transfer case is fully engaged.

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STARTING AND OPERATING143
N (Neutral)
Neutral — This range disengages both the front and rear
driveshafts from the powertrain. To be used for flat towing
behind another vehicle
Úpage 176.
4L
Four-Wheel Drive Low Range — This range provides low
speed four-wheel drive. It maximizes torque to the front
driveshaft, forcing the front and rear wheels to rotate at
the same speed. This range provides additional traction
and maximum pulling power for loose, slippery road
surfaces only. Do not exceed 25 mph (40 km/h).
This transfer case is designed to be driven in the
two-wheel drive position (2H) or four-wheel drive position
(4H AUTO) for normal street and highway conditions on dry
hard surfaced roads.
For variable driving conditions, the 4H AUTO mode can be
used. In this mode, the front axle is engaged, but the
vehicle's power is sent to the rear wheels. Four-wheel drive
will be automatically engaged when the vehicle senses a loss of traction. Because the front axle is engaged, this
mode will result in lower fuel economy than the 2H mode.
In the event that additional traction is required, the
transfer case 4H and 4L positions can be used to lock the
front and rear driveshafts together, forcing the front and
rear wheels to rotate at the same speed. The 4H and 4L
positions are intended for loose, slippery road surfaces
only and not intended for normal driving. Driving in the 4H
and 4L positions on hard-surfaced roads will cause
increased tire wear and damage to the driveline
components. For further information on shifting into 4H or
4L
Úpage 143.
The instrument cluster alerts the driver that the vehicle is
in four-wheel drive, and the front and rear driveshafts are
locked together. The light will illuminate when the transfer
case is shifted into the 4H position.
When operating your vehicle in 4L, the engine speed will
be approximately three times (four times for Rubicon
models) that of the 2H or 4H positions at a given road
speed. Take care not to overspeed the engine.
Proper operation of four-wheel drive vehicles depends on
tires of equal size, type, and circumference on each wheel.
Any difference will adversely affect shifting and cause
damage to the transfer case.
Because four-wheel drive provides improved traction,
there is a tendency to exceed safe turning and stopping
speeds. Do not go faster than road conditions permit.
Shifting Procedures
2H TO 4H AUTO OR 4H AUTO TO 2H
Shifting between 2H and 4H AUTO can be made with the
vehicle stopped or in motion. The preferred shifting speed would be 0 to 45 mph (72 km/h). With the vehicle in
motion, the transfer case will engage/disengage faster if
you momentarily release the accelerator pedal after
completing the shift. Do not accelerate while shifting the
transfer case. Apply a constant force when shifting the
transfer case lever.
2H/4H AUTO TO 4H PART TIME OR 4H PART
TIME TO 2H/4H AUTO
Shifting between 2H/4H AUTO to 4H PART TIME can be
made with the vehicle stopped or in motion. The preferred
shifting speed would be 0 to 45 mph (72 km/h). With the
vehicle in motion, the transfer case will engage/disengage
faster if you momentarily release the accelerator pedal
after completing the shift. Do not accelerate while shifting
the transfer case. Apply a constant force when shifting the
transfer case lever.
NOTE:
 Do not attempt to make a shift while only the front or
rear wheels are spinning. The front and rear driveshaft
speeds must be equal for the shift to take place.
Shifting while only the front or rear wheels are spinning
can cause damage to the transfer case.
 Delayed shifts out of four-wheel drive may be experi -
enced due to uneven tire wear, low or uneven tire pres -
sures, excessive vehicle loading, or cold temperatures.
 Shifting effort will increase with speed, this is normal.
During cold weather, you may experience increased effort
in shifting until the transfer case fluid warms up. This is
normal.
WARNING!
You or others could be injured or killed if you leave the
vehicle unattended with the transfer case in the (N)
Neutral position without first fully engaging the parking
brake. The transfer case (N) Neutral position
disengages both the front and rear driveshafts from the
powertrain, and will allow the vehicle to roll, even if the
automatic transmission is in PARK (or manual
transmission is in gear). The parking brake should
always be applied when the driver is not in the vehicle.
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STARTING AND OPERATING145
The AXLE LOCK switch is located on the instrument panel
(to the right of the steering column).

Axle Lock Switch Panel

This feature will only activate when the following
conditions are met:
Ignition in RUN position, vehicle in 4H.
 The vehicle must be in Off Road+ active
Úpage 146.
 Vehicle must be in ESC “Full Off” mode Úpage 246.
 Vehicle must not be actively in a high wheel slip or tight
cornering condition.
To activate the system, push the AXLE LOCK switch down
to lock the rear axle only (“REAR ONLY” will illuminate).
To unlock the rear axle, push the AXLE LOCK OFF button.
Axle Lock will disengage if the vehicle is taken out of 4H,
Off Road+ is turned off by the driver, ESC “Full Off” is
exited, or the ignition switch is turned to the OFF position.
NOTE:The indicator lights will flash until the rear axle is fully
locked or unlocked. The rear Axle Lock system may temporarily disengage the
rear locker under some conditions.
If this occurs, the rear axle will automatically re-lock as
soon as the system allows.
ELECTRONIC SWAY BAR DISCONNECT —
I
F EQUIPPED
Your vehicle may be equipped with an electronic
disconnecting stabilizer/sway bar. This system allows
greater front suspension travel in off-road situations.
This system is controlled by the SWAY BAR switch located
on the instrument panel (to the right of the steering
column).

SWAY BAR Switch

Push the SWAY BAR switch to activate the system. Push
the switch again to deactivate the system. The Sway Bar
Indicator Light (located in the instrument cluster) will
illuminate when the bar is disconnected. The Sway Bar
Indicator Light will flash during activation transition, or when activation conditions are not met. The stabilizer/
sway bar should remain in on-road mode during normal
driving conditions.
To disconnect the stabilizer/sway bar, shift to either 4H or
4L and push the SWAY BAR switch to obtain the off-road
position
Úpage 140. The Sway Bar Indicator Light will
flash until the stabilizer/sway bar has been fully
disconnected.
NOTE:The stabilizer/sway bar may be torque locked due to left
and right suspension height differences. This condition is
due to driving surface differences or vehicle loading. In
order for the stabilizer/sway bar to disconnect/reconnect,
the right and left halves of the bar must be aligned. This
alignment may require that the vehicle be driven onto level
ground or rocked from side to side.
WARNING!
Ensure the stabilizer/sway bar is reconnected before
driving on hard surfaced roads or at speeds above
18 mph (29 km/h); a disconnected stabilizer/sway bar may contribute to the loss of vehicle control, which
could result in serious injury. Under certain
circumstances, the front stabilizer/sway bar enhances
vehicle stability and assists with vehicle control. The
system monitors vehicle speed and will attempt to
reconnect the stabilizer/sway bar at speeds over
18 mph (29 km/h). This is indicated by a flashing or solid Sway Bar Indicator Light. Once vehicle speed is
reduced below 14 mph (22 km/h), the system will once
again attempt to return to off-road mode.
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146STARTING AND OPERATING
To return to on-road mode, push the SWAY BAR switch
again.
OFF ROAD+ — IF EQUIPPED

OFF ROAD+ Switch

When activated, Off Road+ is designed to improve the
user experience when using specific Off Road driving
modes. To activate Off Road+, push the OFF ROAD+ switch
in the switch bank. The vehicle’s performance will improve
depending on which Four-Wheel Drive (4WD) mode is
activated.
NOTE:Off Road+ will not function in 2H mode. If the button is
pushed while in 2H mode, the cluster display will show the
message “Off Road+ Unavailable Shift to 4WD”.
When Off Road+ is active, the following features will
activate:
The Off Road+ telltale will illuminate in the instrument
cluster display
 A mode-specific message will display the instrument
cluster display
 Off-Road Pages will launch on the radio head-unit if
selected in radio settings
 The Off-Road Camera will launch if selected in radio
settings
Once in Off Road+, the vehicle will begin to behave in
different ways depending on the 4WD mode in use. The
following enhancements will occur when using Off Road+.
4L
 Engine/Transmission Calibration: Rock Crawl and
controllability focus, change in shifting schedule when
rock crawling, pedal calibration shifted to de-gain and
low range, operates at lower vehicle speeds
 Traction Control: Aggressive brake lock differential
tuning at slower speed or FIRST gear
 Off Road+: Recall the last status between ignition
cycles
4H
 Engine/Transmission Calibration: Improved sand
performance/wheel slip focus, change in shift
schedule for sport mode, pedal calibration set to
aggressive, operates at elevated vehicle speeds 
Traction Control: High wheel speed, slip tuning brake
lock differential with no engine management
 Electronic Stability Control: ESC Off with unlimited
speed
 Off Road+: Will default to OFF between ignition cycles
Cruise Control and Adaptive Cruise Control (ACC) will not
function while using Off Road+. A dedicated cluster
message will display indicating this if either feature is
activated while in Off Road+.
If the ESC OFF button is pushed while in Off Road+, the
following will occur on the vehicle:
 Push of the ESC OFF Button: Traction Control will turn
off, but Stability Control will remain active.
 Hold the ESC OFF Button for five seconds: Traction
Control and Stability Control will turn off.
ELECTRO-HYDRAULIC POWER STEERING
Your vehicle is equipped with an Electro-Hydraulic Power
Steering system that provides increased vehicle response
and ease of maneuverability. The system adapts to
different driving conditions. If the Electro-Hydraulic Power
Steering system experiences a fault that prevents it from
providing power steering assist, then the system will
provide mechanical steering capability.
WARNING!

If the stabilizer/sway bar will not return to on-road mode,
the Sway Bar Indicator Light will flash in the instrument
cluster and vehicle stability may be reduced. Do not
attempt to drive the vehicle over 18 mph (29 km/h).
Driving faster than 18 mph (29 km/h) with a discon -
nected stabilizer/sway bar may contribute to the loss of
vehicle control, which could result in serious injury.

CAUTION!
Extreme steering maneuvers may cause the electrically
driven pump to reduce or stop power steering
assistance in order to prevent damage to the system.
Normal operation will resume once the system is
allowed to cool.

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