engine JEEP WRANGLER 4XE 2021 Owners Manual

The driver’s primary responsibility is the safe operation of the vehicle. Driving while distracted can result in loss of vehicle control,
resulting in an accident and personal injury. FCA US LLC strongly recommends that the driver use extreme caution when using any
device or feature that may take their attention off the road. Use of any electrical devices, such as cellular telephones, computers, portable
radios, vehicle navigation or other devices, by the driver while the vehicle is moving is dangerous and could lead to a serious accident.
Texting while driving is also dangerous and should never be done while the vehicle is moving. If you find yourself unable to devote your
full attention to vehicle operation, pull off the road to a safe location and stop your vehicle. Some states or provinces prohibit the use of
cellular telephones or texting while driving. It is always the driver’s responsibility to comply with all local laws.
This Owner’s Manual has been prepared to help you get acquainted with your new Jeep® brand vehicle and to provide a convenient
reference source for common questions.
Not all features shown in this manual may apply to your vehicle. For additional information, visit mopar.com/om (U.S.), owners.mopar.ca
(Canada) or your local Jeep® brand dealer.
Drunk driving is one of the most frequent causes of accidents. Your driving ability can be seriously
impaired with blood alcohol levels far below the legal minimum. If you are drinking, don’t drive.
Ride with a designated non-drinking driver, call a cab, a friend or use public transportation.
DRIVING AND ALCOHOL
Driving after drinking can lead to an accident. Your perceptions are less sharp, your reflexes are
slower and your judgment is impaired when you have been drinking. Never drink and then drive.
WARNING!
WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway
motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide,
phthalates, and lead, which are known to the State of California to cause cancer and birth
defects or other reproductive harm. To minimize exposure, avoid breathing exhaust,
do not idle the engine except as necessary, service your vehicle in a well-ventilated area
and wear gloves or wash your hands frequently when servicing your vehicle. For more
information go to www.P65Warnings.ca.gov/passenger-vehicle.
This Owner’s Manual illustrates and describes the operation of features and equipment that are either standard or optional on this
vehicle. This manual may also include a description of features and equipment that are no longer available or were not ordered on
this vehicle. Please disregard any features and equipment described in this manual that are not on this vehicle. FCA US LLC reserves the
right to make changes in design and specifications, and/or make additions to or improvements to its products without imposing any
obligation upon itself to install them on products previously manufactured.
With respect to any vehicles sold in Canada, the name FCA US LLC shall be deemed to be deleted and the name FCA Canada Inc.
used in substitution therefore.
This Owner’s Manual is intended to familiarize you with the important features of your vehicle. Your most up-to-date Owner’s Manual,
Navigation/Uconnect manuals and Warranty Booklet can be found by visiting the website on the back cover.
U.S Residents: If you are the first registered retail owner of your vehicle, you may obtain a complimentary printed copy of the Warranty
Booklet by calling 1-877-426-5337 or by contacting your dealer. Replacement kits can be purchased by visiting www.techauthority.com.
Canadian Residents: If you are the first registered retail owner of your vehicle, you may obtain a complimentary printed copy of the
Warranty Booklet or purchase a replacement kit by calling 1-800-387-1143 or by contacting your dealer.

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Brake Warning Light Úpage 135
Battery Charge Warning Light Úpage 136
Door Open Warning Light
Úpage 136
Electric Power Steering (EPSyf)DXOW:DUQLQJ/LJKt Úpage 136
Electronic Throttle Control (ETCyf:DUQLQJ/LJKt Úpage 136
Engine Coolant Temperature Warning Light Úpage 136
Hood Open Warning Light Úpage 137
Oil Pressure Warning Light Úpage 137
Oil Temperature Warning Light Úpage 137
Seat Belt Reminder Warning Light Úpage 136
Red Warning Lights
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Low Washer Fluid Warning Light Úpage 138
Engine Check/Malfunction Indicator Warning Light (MILyf Úpage 138
AdBlue® (UREAyf,QMHFWLRQ6\VWHP)DLOXUH:DUQLQJ/LJKt Úpage 139
Service 4WD Warning Light Úpage 139
Service Forward Collision Warning (FCWyf/LJKt Úpage 139
Service Stop/Start System Warning Light Úpage 139
Cruise Control Fault Warning Light Úpage 139
Yellow Warning Lights

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Do not start or run an engine in a closed
garage or confined area. Exhaust gas contains
Carbon Monoxide (COyfZKLFKLVRGRUOHVVDQG
colorless. Carbon Monoxide is poisonous and
can cause serious injury or death when
inhaled.
Keep key fobs away from children. Operation
of the Remote Start system, windows, door
locks or other controls could cause serious
injury or death.
WARNING!
Do not start or run an engine in a closed
garage or confined area. Exhaust gas contains
Carbon Monoxide (COyfZKLFKLVRGRUOHVVDQG
colorless. Carbon Monoxide is poisonous and
can cause serious injury or death when
inhaled.
Keep key fobs away from children. Operation
of the Remote Start system, windows, door
locks or other controls could cause serious
injury or death.
2

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Do not start or run an engine in a closed
garage or confined area. Exhaust gas contains
Carbon Monoxide (COyfZKLFKLVRGRUOHVVDQG
colorless. Carbon Monoxide is poisonous and
can cause serious injury or death when
inhaled.
Keep key fobs away from children. Operation
of the Remote Start system, windows, door
locks or other controls could cause serious
injury or death.
2

21_JL_OM_EN_USC_t.book Page 23

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Do not start or run an engine in a closed
garage or confined area. Exhaust gas contains
Carbon Monoxide (COyfZKLFKLVRGRUOHVVDQG
colorless. Carbon Monoxide is poisonous and
can cause serious injury or death when
inhaled.
Keep key fobs away from children. Operation
of the Remote Start system, windows, door
locks or other controls could cause serious
injury or death.

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Úpage 401.
CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge
reads “H” 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 the “H”, turn the engine
off immediately and call an authorized dealer for
service.

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EXTREME COLD WEATHER
(B
ELOW –22°F OR −30°C\f
To ensure reliable starting at these temperatures,
use of an externally powered electric engine block
heater (available from an authorized dealeryfLV
recommended.
WARNING!

If vehicle speed is above 1.2 mph (1.9 km/hyfWKH
transmission will default to NEUTRAL until the
vehicle speed drops below 1.2 mph (1.9 km/hyf
A vehicle left in the NEUTRAL position can roll. As
an added precaution, always apply the parking
brake when exiting the vehicle.

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Never pour fuel or other flammable liquid into
the throttle body air inlet opening in an
attempt to start the vehicle. This could result
in flash fire causing serious personal injury.
Do not attempt to push or tow your vehicle to
get it started. Vehicles equipped with an auto-
matic transmission cannot be started this
way. Unburned fuel could enter the catalytic
converter and once the engine has started,
ignite and damage the converter and vehicle.
If the vehicle has a discharged battery,
booster cables may be used to obtain a start
from a booster battery or the battery in
another vehicle. This type of start can be
dangerous if done improperly Ú page 367.
CAUTION!
To prevent damage to the starter, do not
continuously crank the engine for more than
25 seconds at a time. Wait 60 seconds before
trying again.
WARNING!
Before exiting a vehicle, always come to a
complete stop, then shift the automatic trans -
mission into PARK and apply the parking
brake.
WARNING!
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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 Malfunc-
tion 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.
CAUTION!
Damage to the fuel system or emission control
system could result from using an improper
fuel filler cap. A poorly fitting cap could let
impurities into the fuel system. Also, a poorly
fitting aftermarket cap can cause the Malfunc -
tion Indicator Light (MILyfWRLOOXPLQDWHGXHWR
fuel vapors escaping from the system.
To avoid fuel spillage and overfilling, do not
“top off” the fuel tank after filling.4

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