2020 JEEP WRANGLER UNLIMITED fuel

171
NOTE:
When the fuel nozzle “clicks” or shuts off,
the fuel tank is full.
Tighten the fuel filler cap about a quarter
turn until you hear one click. This is an
indication that the cap is properly tight-
ened.
If the fuel filler cap is not tightened prop -
erly, the MIL will come on. Be sure the
cap is tightened every time the vehicle is
refueled.
AdBlue® (UREA) — If Equipped
The vehicle is equipped with an AdBlue®
UREA injection system and Selective Cata -
lytic Reduction to meet emission standards.
These two systems ensure compliance with
the diesel emissions requirements; at the
same, they ensure fuel-efficiency, handling,
torque and power. For messages and system
warnings, refer to the “Warning Lights And
Messages” in the “Getting To Know Your
Instrument Panel" section. AdBlue® (UREA)
is a very stable product with a long shelf life.
Stored at temperatures LOWER than 90°F
(32°C), it has a shelf life of at least one year.
For more information on the AdBlue®
(UREA) liquid type, see the “Fluids and
lubricants” in the “Technical specifications”
section. The vehicle is equipped with an
automatic AdBlue® (UREA) heating system
when the engine starts allowing the system
to work correctly at temperatures lower than
12°F (-11°C).
NOTE:
AdBlue® (UREA) freezes at temperatures
lower than 12°F (-11°C).Do not apply any object/cap to the end of
the filler which is not provided for the
car. The use of non-compliant objects/
plugs could cause a pressure increase
inside the tank, resulting in dangerous
situations.
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 after -
market cap can cause the “Malfunction
Indicator Light (MIL)” to illuminate, due
to fuel vapors escaping from the system.
To avoid fuel spillage and overfilling, do
not “top off” the fuel tank after filling.
WARNING! (Continued)
CAUTION!
For diesel engines, only use diesel fuel for
motor vehicles in accordance with EN 590
European specifications. The use of other
products or mixtures may damage the
engine beyond repair and consequently
void the warranty, due to the damage
caused. If you accidentally introduce other
types of fuel into the tank, do not start the
engine. Empty the tank. If the engine has
been run for even an extremely limited
amount of time, you must not only drain
the fuel tank, but the rest of the supply
circuit as well.
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STARTING AND OPERATING
172
AdBlue® (UREA) Storage
AdBlue® (UREA) is considered a very stable
product with a long shelf life. If AdBlue®
(UREA) is kept in temperatures between 10°
and 90°F (-12° and 32°C), it will last a
minimum of one year.
AdBlue® (UREA) is subject to freezing at the
lowest temperatures. For example, AdBlue®
(UREA) may freeze at temperatures at or
below 12°F (-11°C). The system has been
designed to operate in this environment.
NOTE:
When working with AdBlue® (UREA), it is
important to know that:
Any containers or parts that come into
contact with AdBlue® (UREA) must be
AdBlue® (UREA) compatible (plastic or
stainless steel). Copper, brass, aluminum,
iron or non-stainless steel should be
avoided as they are subject to corrosion by
AdBlue® (UREA).
If AdBlue® (UREA) is spilled, it should be
wiped up completely.
Adding AdBlue® (UREA)
Preliminary Conditions
AdBlue® (UREA) freezes at temperatures
lower than 12°F (-11°C). If the car stands for
a long time at this temperature refilling
could be difficult. For this reason, it is
advised to park the vehicle in a garage and/
or heated environment and wait for the urea
to return to liquid state before topping up.
Proceed as follows:
Park the car on flat ground and stop the
engine by placing the ignition to the OFF
position.
Open the fuel door, undo and remove the
cap (blue) from the AdBlue® (UREA)
filler.
Refilling With Nozzles
You can fill up at any AdBlue® (UREA)
distributor.
Proceed as follows:
Insert the AdBlue® (UREA) nozzle in the
filler, start refilling and stop refilling at the
first shut-off (the shut-off indicates that the AdBlue® (UREA) tank is full). Do not
proceed with the refilling, to prevent
spillage of AdBlue® (UREA).
Extract the nozzle.
Refilling With Containers
Proceed as follows:
Check the expiration date.
Read the advice for use on the label before
pouring the content of the bottle into the
AdBlue® (UREA) tank.
If systems which cannot be screwed in
(e.g. tanks) are used for refilling, after the
indication appears on the instrument
panel display refer to “Warning lights And
Messages” in the “Getting To Know Your
Instrument Panel” for further information,
fill the AdBlue® (UREA) tank with no
more than 2 Gallons (8 liters).
If containers which can be screwed to the
filler are used, the reservoir is full when
the AdBlue® (UREA) level in the
container stops pouring out. Do not
proceed further.
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173
Operations After Refilling
Proceed as follows:
Fit the cap back on the AdBlue® (UREA)
filler by turning it clockwise and screwing
it completely.
Place the ignition in RUN (it is not neces-
sary to start the engine).

Wait for the indication on the instrument
panel to switch off before moving the car.
The indication may stay on for a few seconds
to approximately half a minute. If the engine
is started and the car is moved, the indica-
tion will remain on for longer. This will not
compromise engine operation.

If the AdBlue® (UREA) was topped up
when the tank was empty, wait for
2 minutes before starting the engine.
NOTE:
If AdBlue® (UREA) is spilled out of the
filler neck, clean up well the area and
proceed to filling up again. If the liquid
crystallizes, eliminate it with a sponge and
warm water.
DO NOT EXCEED THE MAXIMUM LEVEL:
this could cause damage to the reservoir.
AdBlue® (UREA) freezes at under 12°F
(-11°C). Although the system is designed
to operate below the freezing point of the
AdBlue® (UREA), it is advisable not to fill
the tank beyond the maximum level
because if the AdBlue® (UREA) freezes
the system can be damaged. Follow the
instructions in this section.
If the AdBlue® (UREA) is spilled on
painted surfaces or aluminum, immedi -
ately clean the area with water and use
absorbent material to collect the fluid that
has been spilled on the ground.
Do not try to start the engine if AdBlue®
(UREA) was accidentally added to the
diesel fuel tank, this can result in serious
engine damage, contact an authorized
dealer.
Do not add additives or other fluids to
AdBlue® (UREA), doing so could damage
the system.
The use of non-conforming or degraded
AdBlue® (UREA) may lead to indications
appearing on the instrument panel display
refer to “Warning Lights And Messages” in
the “Getting To Know Your Instrument
Panel” for further information.
Never pour AdBlue® (UREA) into another
container: it could be contaminated.
If the AdBlue® (UREA) runs out, see refer
to “Warning Lights And Messages” in the
“Getting To Know Your Instrument Panel”
for further information to continue using
the car normally.
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175
Curb Weight
The curb weight of a vehicle is defined as the
total weight of the vehicle with all fluids,
including vehicle fuel, at full capacity condi-
tions, and with no occupants or cargo loaded
into the vehicle. The front and rear curb
weight values are determined by weighing
your vehicle on a commercial scale before
any occupants or cargo are added.
Loading
The actual total weight and the weight of the
front and rear of your vehicle at the ground
can best be determined by weighing it when
it is loaded and ready for operation. The entire vehicle should first be weighed on
a commercial scale to ensure that the GVWR
has not been exceeded. The weight on the
front and rear of the vehicle should then be
determined separately to be sure that the
load is properly distributed over the front and
rear axle. Weighing the vehicle may show
that the GAWR of either the front or rear
axles has been exceeded but the total load is
within the specified GVWR. If so, weight
must be shifted from front to rear or rear to
front as appropriate until the specified
weight limitations are met. Store the heavier
items down low and be sure that the weight
is distributed equally. Stow all loose items
securely before driving.Improper weight distributions can have an
adverse effect on the way your vehicle steers
and handles and the way the brakes operate.
TRAILER TOWING
Trailer Towing Weights (Maximum Trailer Weight Ratings)
CAUTION!
Do not load your vehicle any heavier than
the GVWR or the maximum front and rear
GAWR. If you do, parts on your vehicle can
break, or it can change the way your
vehicle handles. This could cause you to
lose control. Also overloading can shorten
the life of your vehicle.
Model
Frontal AreaMax. GTW (Gross Trailer
Wt.) With Trailer Brakes Max. Trailer Tongue Wt. (See Note)
Two–Door
20 ft2 (1.86 m2)3,300 lb (1,497 kg)
165 lb (75 kg)
Four–Door 30 ft
2 (2.79 m2)5,500 lbs (2,495 kg)
275 lbs (125 kg)
When towing a trailer, the technically permissible laden weight may be exceeded by not more than 10% or 220 lbs (100 kg), whichever is
lower provided the operating speed is restricted to 62 mph (100 km/h) or less. Trailer sway control device is recommended when towing
more than 1,000 lbs (454 kg).
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IN CASE OF EMERGENCY
184
Power Distribution Center (PDC)
The Power Distribution Center (PDC) is
located in the engine compartment near the
battery. This center contains cartridge fuses,
mini fuses, and relays. The PDC top cover is
labeled with each serviceable fuse/relay loca-
tion, function, and size. NOTE:
Fuses for safety systems (marked with *)
must be serviced by an authorized dealer.
Power Distribution Center
CavityCartridge Fuse Micro Fuse Description
F01– –Spare
F02 40 Amp Green –Starter
(*)
F03 –5 Amp Tan Intelligent Battery Sensor (IBS)
(*)
F04 –20 Amp Yellow Fuel Pump MTR/FPCM
(*)
F05 –5 Amp Tan Security Gateway

(*)
F06 – –Spare
F07 –15 Amp Blue Low Temp Radiator Cooling Pump (LTR) — If Equipped
(*)
F08 –15 Amp Blue Trans Control Module TCM-8HP CYGNUS
(*)
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IN CASE OF EMERGENCY
190
F8230 Amp Pink –FUEL HTR — If Equipped
(*)
F83 60 Amp Yellow GLOW PLUG — If Equipped
(*)
F84 30 Amp Pink –UREA HTR CTRL UNIT — If Equipped
(*)
F85 –10 Amp Red PM SENSOR — If Equipped
(*)
F86 30 Amp Pink –BRAKE VAC PMP 2 — If Equipped
(*)
F87 –10 Amp Red SUPPLY/PURGING PMP — If Equipped
(*)
F88 20 Amp Blue –NOx SENSOR #1/ #2 — IF Equipped
(*)
F89 –10 Amp Red Steering Column Control Module (SCCM)/ Cruise Control
(CRUISE CTL)/Digital TV (DTV)
(*)
F90 20 Amp Blue –TRAILER TOW PARK LMP — If Equipped
F91 –20 Amp Yellow HORN
F92 40 Amp Green –HD ACCY #2 — If Equipped
(*)
F93 40 Amp Green –HD ACCY #1 — If Equipped
(*)
F94 –10 Amp Red Tire Pressure Monitor (TPM)/RF Hub system (CORAX)
(*)
F95 – –Spare
Cavity Cartridge Fuse Micro Fuse Description
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IN CASE OF EMERGENCY
202
NOTE:
Never use a fast battery charger to start the
engine, as this could damage the electronic
systems of your vehicle, particularly the igni-
tion and engine fuel supply control units.
1. Apply the parking brake, shift the auto -
matic transmission into PARK and turn
the ignition OFF.
2. Turn off the heater, radio, and all unnec -
essary electrical accessories.
3. If using another vehicle to jump start the battery, park the vehicle within the
jumper cable’s reach, apply the parking
brake and make sure the ignition is OFF.Jump Starting Procedure
NOTE:
Make sure at all times that unused ends of
jumper cables are not contacting each other
or either vehicle while making connections. Connecting The Jumper Cables
Jumper Cable Connections
1. Connect the positive (+) end of the
jumper cable to the remote positive (+)
post of the discharged vehicle.
2. Connect the opposite end of the positive (+) jumper cable to the positive (+) post
of the booster battery.
3. Connect the negative end (-) of the
jumper cable to the negative (-) post of
the booster battery.
WARNING!
Do not allow vehicles to touch each other
as this could establish a ground
connection and personal injury could
result.
WARNING!
Failure to follow this jump starting
procedure could result in personal injury or
property damage due to battery explosion.
CAUTION!
Failure to follow these procedures could
result in damage to the charging system of
the booster vehicle or the discharged
vehicle.
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203

4. Connect the opposite end of the negative (-)
jumper cable to a good engine ground
(exposed metal part of the discharged
vehicle’s engine) away from the battery and
the fuel injection system.

5. Start the engine in the vehicle that has the booster battery, let the engine idle a
few minutes, and then start the engine in
the vehicle with the discharged battery.
6. Once the engine is started, remove the jumper cables in the reverse sequence. Disconnecting The Jumper Cables
1. Disconnect the negative
(-) end of the
jumper cable from the engine ground of
the vehicle with the discharged battery.
2. Disconnect the opposite end of the nega -
tive (-) jumper cable from the negative (-)
post of the booster battery.
3. Disconnect the positive (+) end of the
jumper cable from the positive (+) post of
the booster battery.
4. Disconnect the opposite end of the posi -
tive (+) jumper cable from the remote
positive (+) post of the discharged
vehicle.
5. Reinstall the protective cover over the remote positive (+) post of the
discharged vehicle. If frequent jump starting is required to start
your vehicle, have the battery and charging
system tested at an authorized dealer.
WARNING!
Do not connect the jumper cable to the
negative (-) post of the discharged battery.
The resulting electrical spark could cause
the battery to explode and could result in
personal injury. Only use the specific
ground point, do not use any other
exposed metal parts.
CAUTION!
Do not run the booster vehicle engine
above 2,000 rpm since it provides no
charging benefit, wastes fuel, and can
damage booster vehicle engine.
CAUTION!
Accessories plugged into the vehicle power
outlets draw power from the vehicle’s
battery, even when not in use (i.e., cellular
devices, etc.). Eventually, if plugged in
long enough without engine operation, the
vehicle’s battery will discharge sufficiently
to degrade battery life and/or prevent the
engine from starting.
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