ECU JEEP WRANGLER 4XE JL 2021 User Guide
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, P S U R S H U W R Z L Q J F D Q O H D G W R D F R O O L V L R Q ) R O O R Z
W K H V H J X L G H O L Q H V W R P D N H \ R X U W U D L O H U W R Z L Q J D V
V D I H D V S R V V L E O H
Make certain that the load is secured in the
trailer and that it will not shift during travel.
When trailering cargo that is not fully secured,
dynamic load shifts can occur that may be
difficult for the driver to control. You could lose
control of your vehicle and have a collision.
WARNING!
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MU \f
A
UCONNECT SYSTEMS
For detailed information about your Uconnect 4/
4C/4C NAV With 8.4-inch Display system, refer to
your Uconnect Owner’s Manual Supplement.
NOTE:Uconnect screen images are for illustration
purposes only and may not reflect exact software
for your vehicle.
CYBERSECURITY
Your vehicle may be a connected vehicle and may
be equipped with both wired and wireless
networks. These networks allow your vehicle to
send and receive information. This information
allows systems and features in your vehicle to
function properly.Your vehicle may be equipped with certain security
features to reduce the risk of unauthorized and
unlawful access to vehicle systems and wireless
communications. Vehicle software technology
continues to evolve over time and FCA US LLC,
working with its suppliers, evaluates and takes
appropriate steps as needed.
The risk of unauthorized and unlawful access to
your vehicle systems may still exist, even if the
most recent version of vehicle software (such as
Uconnect softwareyf L V L Q V W D O O H G .
NOTE:
To help further improve vehicle security and
minimize the potential risk of a security breach,
vehicle owners should:
Routinely check www.driveuconnect.com
(US Residentsyf R U www.driveuconnect.ca
(Canadian Residentsyf W R O H D U Q D E R X W D Y D L l -
able Uconnect software updates.
Only connect and use trusted media
devices (e.g. personal mobile phones,
USBs, CDsyf .
WARNING!
ONLY insert trusted devices/components into
your vehicle. Media of unknown origin could
possibly contain malicious software, and if
installed in your vehicle, it may increase the
possibility for vehicle systems to be breached.
As always, if you experience unusual vehicle
behavior, take your vehicle to an authorized
dealer immediately.
5
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Never place a rear-facing child restraint in
front of an air bag. A deploying passenger
front air bag can cause death or serious injury
to a child 12 years or younger, including a
child in a rear-facing child restraint.
WARNING!WARNING!
Improper installation can lead to failure of an
infant or child restraint. It could come loose in
a collision. The child could be badly injured or
killed. Follow the child restraint manufac-
turer’s directions exactly when installing an
infant or child restraint.
After a child restraint is installed in the
vehicle, do not move the vehicle seat forward
or rearward because it can loosen the child
restraint attachments. Remove the child
restraint before adjusting the vehicle seat
position. When the vehicle seat has been
adjusted, reinstall the child restraint.
When your child restraint is not in use, secure
it in the vehicle with the seat belt or LATCH
anchorages, or remove it from the vehicle. Do
not leave it loose in the vehicle. In a sudden
stop or accident, it could strike the occupants
or seatbacks and cause serious personal
injury.
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Improper installation of a child restraint to the
LATCH anchorages can lead to failure of the
restraint. The child could be badly injured or
killed. Follow the child restraint manufac-
turer’s directions exactly when installing an
infant or child restraint.
Child restraint anchorages are designed to
withstand only those loads imposed by
correctly-fitted child restraints. Under no
circumstances are they to be used for adult
seat belts, harnesses, or for attaching other
items or equipment to the vehicle.
WARNING!
Improper installation or failure to properly
secure a child restraint can lead to failure of
the restraint. The child could be badly injured
or killed.
Follow the child restraint manufacturer’s
directions exactly when installing an infant or
child restraint.
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O R F N H G U H S H D W
V W H S
) L Q D O O \ S X O O X S R Q D Q \ H [ F H V V Z H E E L Q J W R W L J K W H Q W K H O D S S R U W L R Q D U R X Q G W K H F K L O G
U H V W U D L Q W Z K L O H \ R X S X V K W K H F K L O G U H V W U D L Q W
U H D U Z D U G D Q G G R Z Q Z D U G L Q W R W K H Y H K L F O H V H D W
, I W K H F K L O G U H V W U D L Q W K D V D W R S W H W K H U V W U D S D Q G W K H V H D W L Q J S R V L W L R Q K D V D W R S W H W K H U
D Q F K R U D J H F R Q Q H F W W K H W H W K H U V W U D S W R W K H
D Q F K R U D J H D Q G W L J K W H Q W K H W H W K H U V W U D S 6 H H
Úpage 345 for directions to attach a tether
anchor.
9. Test that the child restraint is installed tightly by pulling back and forth on the child seat at
the belt path. It should not move more than
1 inch (25.4 mmyf L Q D Q \ G L U H F W L R Q .
Any seat belt system will loosen with time, so check
the belt occasionally, and pull it tight if necessary.
1 — Folded Headrest
2 — Child Restraint
WARNING!
Improper installation or failure to properly
secure a child restraint can lead to failure of
the restraint. The child could be badly injured
or killed.
WARNING!
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' R Q R W D W W D F K D W H W K H U V W U D S I R U D U H D U I D F L Q J F D U
V H D W W R D Q \ O R F D W L R Q L Q I U R Q W R I W K H F D U V H D W
L Q F O X G L Q J W K H V H D W I U D P H R U D W H W K H U D Q F K R U D J H
2 Q O \ D W W D F K W K H W H W K H U V W U D S R I D U H D U I D F L Q J F D U
V H D W W R W K H W H W K H U D Q F K R U D J H W K D W L V D S S U R Y H G I R U
W K D W V H D W L Q J S R V L W L R Q O R F D W H G E H K L Q G W K H W R S R I
W K H Y H K L F O H V H D W ) R U W K H O R F D W L R Q R I D S S U R Y H G
W H W K H U D Q F K R U D J H V L Q \ R X U Y H K L F O H V H H
Úpage 336.
WARNING!
An incorrectly anchored tether strap could
lead to increased head motion and possible
injury to the child. Use only the anchorage
position directly behind the child seat to
secure a child restraint top tether strap.
If your vehicle is equipped with a split rear
seat, make sure the tether strap does not slip
into the opening between the seatbacks as
you remove slack in the strap.
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$ Q L P S U R S H U O \ D W W D F K H G G D P D J H G I R O G H G R U
V W D F N H G I O R R U P D W R U G D P D J H G I O R R U P D W
I D V W H Q H U V P D \ F D X V H \ R X U I O R R U P D W W R L Q W H U I H U H
Z L W K W K H D F F H O H U D W R U E U D N H R U F O X W F K S H G D O V D Q G
F D X V H D O R V V R I Y H K L F O H F R Q W U R O 7 R S U H Y H Q W
6 ( 5 , 2 8 6 , 1 - 8 5 < R U ' ( $ 7 +
ALWAYS securely attach your floor
mat using the floor mat fasteners. DO
NOT install your floor mat upside down
or turn your floor mat over. Lightly pull
to confirm mat is secured using the floor mat
fasteners on a regular basis.
WARNING!
6
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5 L G L Q J W K H E U D N H V F D Q O H D G W R E U D N H I D L O X U H D Q G
S R V V L E O \ D F R O O L V L R Q ' U L Y L Q J Z L W K \ R X U I R R W U H V W L Q J
R U U L G L Q J R Q W K H E U D N H S H G D O F D Q U H V X O W L Q
D E Q R U P D O O \ K L J K E U D N H W H P S H U D W X U H V H [ F H V V L Y H
O L Q L Q J Z H D U D Q G S R V V L E O H E U D N H G D P D J H < R X
Z R X O G Q R W K D Y H \ R X U I X O O E U D N L Q J F D S D F L W \ L Q D Q
H P H U J H Q F \
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Use only the manufacturer recommended
brake fluid Úpage 452. Using the wrong type
of brake fluid can severely damage your brake
system and/or impair its performance. The
proper type of brake fluid for your vehicle is
also identified on the original factory installed
hydraulic master cylinder reservoir.
To avoid contamination from foreign matter or
moisture, use only new brake fluid or fluid that
has been in a tightly closed container. Keep
the master cylinder reservoir cap secured at
all times. Brake fluid in an open container
absorbs moisture from the air resulting in a
lower boiling point. This may cause it to boil
unexpectedly during hard or prolonged
braking, resulting in sudden brake failure. This
could result in a collision.
Overfilling the brake fluid reservoir can result
in spilling brake fluid on hot engine parts,
causing the brake fluid to catch fire. Brake
fluid can also damage painted and vinyl
surfaces, care should be taken to avoid its
contact with these surfaces.
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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
interfere 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 accelerator, brake, or clutch
pedals and could cause a loss of vehicle
control.
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