2021 JEEP WRANGLER 2DOORS park assist

6
STARTING AND OPERATING
STARTING THE ENGINE ........................ 138
Normal Starting —
Gasoline Engine ........................... 138
Normal Starting — Diesel Engine ......... 141
Diesel Engine Warm-Up ................ 141
Diesel Engine Idling —
In Cold Weather ........................... 142 Stopping the Engine ..................... 142

ENGINE BREAK-IN RECOMMENDATIONS .... 143

AUTOMATIC TRANSMISSION................. 143
Ignition Park Interlock................... 144
Brake/Transmission Shift Interlock
System ....................................... 144 Eight–Speed Automatic
Transmission................................ 145
FOUR–WHEEL DRIVE OPERATION .......... 146
Four-Position Transfer Case ........... 146
Five-Position Transfer Case ........... 148
Trac-Lok Rear Axle —
If Equipped ................................. 151 Axle Lock (Tru-Lok) —
Rubicon Models ........................... 151 Electronic Sway Bar Disconnect —
If Equipped ................................. 152
STOP/START SYSTEM — AUTOMATIC
TRANSMISSION (IF EQUIPPED) .............153
Automatic Mode ........................... 154
Possible Reasons The Engine Does
Not Autostop ............................... 154 To Start The Engine While In
Autostop Mode ............................. 155 To Manually Turn Off The
Stop/Start System ........................ 155 To Manually Turn On The
Stop/Start System ........................ 155 System Malfunction...................... 155
ACTIVE SPEED LIMITER —
IF EQUIPPED .......................................156
Activation .................................... 156
Exceeding The Set Speed.............. 156
Deactivation ................................ 156
SPEED CONTROL ..................................157
To Activate .................................. 157
To Set A Desired Speed ................ 158
To Resume Speed ....................... 158
To Deactivate .............................. 158
ADAPTIVE CRUISE CONTROL (ACC) —
IF EQUIPPED .......................................158
To Activate/Deactivate .................. 158
To Set A Desired ACC Speed ......... 159
To Resume .................................. 159
To Vary The Speed Setting ........... 159
Setting The Following Distance
In ACC ........................................ 160
PARKSENSE REAR PARK ASSIST —
IF EQUIPPED ........................................161
ParkSense Sensors ........................161
Enabling And Disabling
ParkSense ....................................161 ParkSense System Usage
Precautions ..................................162
PARKSENSE FRONT AND
REAR PARK ASSIST — IF EQUIPPED ......163
ParkSense Sensors ........................163
ParkSense Warning Display ............163
ParkSense Display ........................163
Enabling And Disabling
ParkSense ....................................165 Service The ParkSense Park Assist
System ........................................166 Cleaning The ParkSense System .....166
ParkSense System Usage
Precautions ..................................166
PARKVIEW REAR BACK UP CAMERA —
IF EQUIPPED ........................................167
REFUELING THE VEHICLE .....................169
Fuel Filler Cap ..............................169
Loose Fuel Filler Cap Message ......170
REFUELING THE VEHICLE — DIESEL ......170
AdBlue® (UREA) — If Equipped ....171
VEHICLE LOADING ...............................174
Weights Label...............................174
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GETTING TO KNOW YOUR INSTRUMENT PANEL
66

Vehicles equipped with the Anti-Lock Brake
System (ABS) are also equipped with Electronic
Brake Force Distribution (EBD). In the event of an
EBD failure, the Brake Warning Light will turn on
along with the ABS Light. Immediate repair to the
ABS system is required.

Operation of the Brake Warning Light can be
checked by turning the ignition switch from
the OFF position to the ON/RUN position.
The light should illuminate for approximately
four seconds. The light should then turn off
unless the parking brake is applied or a brake
fault is detected. If the light does not illumi-
nate, have the light inspected by an autho -
rized dealer.
The light also will turn on when the parking
brake is applied with the ignition switch in
the ON/RUN position.
NOTE:
This light shows only that the parking brake
is applied. It does not show the degree of
brake application.
— Battery Charge Warning Light

This warning light will illuminate when the battery
is not charging properly. If it stays on while the
engine is running, there may be a malfunction with the charging system. Contact an authorized
dealer as soon as possible.

This indicates a possible problem with the
electrical system or a related component.
— Door Open Warning Light
This indicator will illuminate when a door is
ajar/open or not fully closed.
NOTE:
If the vehicle is moving, there will also be a
single chime.
— Electric Power Steering Fault Warning
Light
This warning light will turn on when there's a
fault with the Electric Power Steering (EPS)
system. Refer to “Electric Power Steering” in
“Starting And Operating” in the Owner’s
Manual for further information.
— Electronic Throttle Control (ETC)
Warning Light
This warning light will illuminate to indicate
a problem with the Electronic Throttle
Control (ETC) system. If a problem is
detected while the vehicle is running, the
light will either stay on or flash depending on
the nature of the problem. Cycle the ignition
when the vehicle is safely and completely
stopped and the transmission is placed in
the PARK (P) position. The light should turn
off. If the light remains on with the vehicle
running, your vehicle will usually be drive -
able; however, see an authorized dealer for
service as soon as possible.
NOTE:
This light may turn on if the accelerator and
brake pedals are pressed at the same time.

If the light continues to flash when the vehicle is
running, immediate service is required and you
may experience reduced performance, an
elevated/rough idle, or engine stall and your
vehicle may require towing. The light will come on
when the ignition is placed in the ON/RUN or
ACC/ON/RUN position and remain on briefly as a
bulb check. If the light does not come on during
starting, have the system checked by an
authorized dealer.

WARNING!
Continued operation with reduced assist
could pose a safety risk to yourself and
others. Service should be obtained as soon
as possible.
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85
The cluster icon and switch indicator light
will flash when HDC deactivates due to
overheated brakes. The flashing will stop
and HDC will activate again once the
brakes have cooled sufficiently.
Hill Start Assist (HSA)

The Hill Start Assist (HSA) system is designed to
mitigate roll back from a complete stop while on
an incline. If the driver releases the brake while
stopped on an incline, HSA will continue to hold
the brake pressure for a short period. If the driver
does not apply the throttle before this time
expires, the system will release brake pressure
and the vehicle will roll down the hill as normal.
The following conditions must be met in
order for HSA to activate:
The feature must be enabled
The vehicle must be stopped
Park brake must be off
Driver door must be closed. (If the doors
are attached, then the door must be
closed. If the doors are detached then the
driver's seatbelt must be buckled)
The vehicle must be on a sufficient grade
The gear selection must match vehicle
uphill direction (i.e., vehicle facing uphill
is in forward gear; vehicle backing uphill is
in REVERSE (R) gear)
HSA will work in REVERSE gear and all
forward gears. The system will not activate
if the transmission is in PARK (P) or
NEUTRAL (N). For vehicles equipped with
a manual transmission, if the clutch is
pressed, HSA will remain active.
Disabling And Enabling HSA
This feature can be turned on or turned off.
To change the current setting, refer to
“Instrument Cluster Display” in “Getting To
Know Your Instrument Panel” for further
information.
WARNING!
HDC is only intended to assist the driver in
controlling vehicle speed when descending
hills. The driver must remain attentive to
the driving conditions and is responsible
for maintaining a safe vehicle speed.
WARNING!
There may be situations where the Hill
Start Assist (HSA) will not activate and
slight rolling may occur, such as on minor
hills or with a loaded vehicle, or while
pulling a trailer. HSA is not a substitute for
active driving involvement. It is always the
driver’s responsibility to be attentive to
distance to other vehicles, people, and
objects, and most importantly brake
operation to ensure safe operation of the
vehicle under all road conditions. Your
complete attention is always required
while driving to maintain safe control of
your vehicle. Failure to follow these
warnings can result in a collision or serious
personal injury.
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SAFETY
86
Towing With HSA
HSA will also provide assistance to mitigate
roll back while towing a trailer.
Ready Alert Braking (RAB)
Ready Alert Braking (RAB) may reduce the
time required to reach full braking during
emergency braking situations. It anticipates
when an emergency braking situation may
occur by monitoring how fast the throttle is
released by the driver. The Electronic Brake
Control (EBC) system will prepare the brake
system for a panic stop.
Rain Brake Support (RBS)
Rain Brake Support (RBS) may improve
braking performance in wet conditions. It
will periodically apply a small amount of
brake pressure to remove any water buildup
on the front brake rotors. It functions when
the windshield wipers are in LO or HI speed.
When RBS is active, there is no notification
to the driver and no driver interaction is
required.
Trailer Sway Control (TSC)
Trailer Sway Control (TSC) uses sensors in
the vehicle to recognize an excessively
swaying trailer and will take the appropriate
actions to attempt to stop the sway. TSC will
become active automatically once an exces-
sively swaying trailer is recognized.

NOTE:
TSC cannot stop all trailers from swaying.
Always use caution when towing a trailer and
follow the trailer tongue weight recommenda-
tions. Refer to “Trailer Towing” in “Starting
And Operating” for further information.

When TSC is functioning, the “ESC Activa -
tion/Malfunction Indicator Light” will flash,
the engine power may be reduced and you
may feel the brakes being applied to indi -
vidual wheels to attempt to stop the trailer
from swaying. TSC is disabled when the ESC
system is in the “Partial Off” or “Full Off”
modes.
WARNING!
If you use a trailer brake controller with
your trailer, the trailer brakes may be
activated and deactivated with the brake
switch. If so, there may not be enough
brake pressure to hold both the vehicle
and the trailer on a hill when the brake
pedal is released. In order to avoid
rolling down an incline while resuming
acceleration, manually activate the
trailer brake or apply more vehicle brake
pressure prior to releasing the brake
pedal.
HSA is not a parking brake. Always apply
the parking brake fully when exiting your
vehicle. Also, be certain to place the
transmission in PARK (P).
Failure to follow these warnings can
result in a collision or serious personal
injury. WARNING!
If TSC activates while driving, slow the
vehicle down, stop at the nearest safe
location, and adjust the trailer load to
eliminate trailer sway.
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139
NOTE:
The system will automatically time out and
the ignition will cycle to the OFF mode after
30 minutes of inactivity if the ignition is left
in the ACC or RUN (engine not running)
mode and the transmission is in PARK.
ENGINE START/STOP Button Functions — With
Driver’s Foot OFF The Brake Pedal (In PARK Or
NEUTRAL Position)
The ENGINE START/STOP button operates
similar to an ignition switch. It has three
modes: OFF, ACC, and RUN. To change the
ignition modes without starting the vehicle
and use the accessories, follow these steps:

1. Starting with the ignition in the OFF mode,

2. Push the ENGINE START/STOP button onceto place the ignition to the ACC mode (instru -
ment cluster will display “ACC”),

3. Push the ENGINE START/STOP button a second time to place the ignition to the
RUN mode (instrument cluster will
display “ON/RUN”),
4. Push the ENGINE START/STOP button a third time to return the ignition to the
OFF mode (instrument cluster will
display “OFF”).AutoPark
AutoPark is a supplemental feature to assist
in placing the vehicle in PARK should the
situations on the following pages occur. It is
a back up system and should not be relied
upon as the primary method by which the
driver shifts the vehicle into PARK.
The conditions under which AutoPark will
engage are outlined on the following pages. If the vehicle is not in PARK and the driver turns
off the engine, the vehicle may AutoPark.
AutoPark will engage when all of these
conditions are met:
Vehicle is equipped with an 8-speed trans-
mission
Driver’s door is ajar or in conditions where
driver door is removed an additional
trigger would be if the driver is off the seat
(seat pad sensor detects driver missing).
Vehicle is not in PARK
Vehicle speed is 0 mph (0 km/h)
Ignition switched from RUN to OFF
NOTE:
For Keyless Enter-N-Go equipped vehicles,
The engine will turn off and the ignition
switch will change to ACC mode. After
30 minutes the ignition switches to OFF
automatically, unless the driver turns the
ignition switch OFF.
WARNING!
Driver inattention could lead to failure to
place the vehicle in PARK. ALWAYS DO
A VISUAL CHECK that your vehicle is in
PARK by verifying that a solid (not
blinking) “P” is indicated in the instru -
ment cluster display and on the gear
selector. If the "P" indicator is blinking,
your vehicle is not in PARK. As an added
precaution, always apply the parking
brake when exiting the vehicle.
AutoPark is a supplemental feature. It is
not designed to replace the need to shift
your vehicle into PARK. It is a back up
system and should not be relied upon as
the primary method by which the driver
shifts the vehicle into PARK.
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161
To increase the distance setting, push the
Distance Setting — Increase button and
release. Each time the button is pushed, the
distance setting increases by one bar
(longer).
To decrease the distance setting, push the
Distance Setting — Decrease button and
release. Each time the button is pushed, the
distance setting decreases by one bar
(shorter).
PARKSENSE REAR PARK
ASSIST — IF EQUIPPED
The ParkSense Rear Park Assist system
provides visual and audible indications of
the distance between the rear fascia and a
detected obstacle when backing up (e.g.
during a parking maneuver). Refer to “Park-
Sense System Usage Precautions” in this
section for limitations of this system and
recommendations.
ParkSense will retain the last system state
(enabled or disabled) from the last ignition
cycle when the ignition is changed to the ON/
RUN position. ParkSense can be active only when the gear
selector is in REVERSE. If ParkSense is
enabled at this gear selector position, the
system will remain active until the vehicle
speed is increased to approximately 7 mph
(11 km/h) or above. When in REVERSE and
above the system's operating speed, a
warning will appear within the instrument
cluster display indicating the vehicle speed
is too fast. The system will become active
again if the vehicle speed is decreased to
speeds less than approximately 6 mph
(9 km/h).
ParkSense Sensors
The four ParkSense sensors, located in the
rear fascia/bumper, monitor the area behind
the vehicle that is within the sensors’ field of
view. The sensors can detect obstacles from
approximately 12 inches (30 cm) up to
79 inches (200 cm) from the rear fascia/
bumper in the horizontal direction,
depending on the location, type and orienta
-
tion of the obstacle.
Enabling And Disabling ParkSense
ParkSense can be enabled and disabled with
the ParkSense switch, located on the switch
panel below the climate controls.
ParkSense Switch
When the ParkSense switch is pushed to
disable the system, the instrument cluster
display will show the “PARKSENSE OFF”
message for approximately five seconds.
Refer to “Instrument Cluster Display” in
“Getting To Know Your Instrument Panel” in
your Owner’s Manual for further information.
When the gear selector is moved to
REVERSE and the system is disabled, the
instrument cluster display will show the
“PARKSENSE OFF” message for as long as
the vehicle is in REVERSE (Not in 4L).
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163
PARKSENSE FRONT AND
REAR PARK ASSIST — IF
EQUIPPED
The ParkSense Front & Rear Park Assist
system provides visual and audible indica-
tions of the distance between the rear and/or
front fascia and a detected obstacle when
backing up or moving forward (e.g. during a
parking maneuver). Refer to “ParkSense
System Usage Precautions” in this section
for limitations of this system and recommen -
dations. ParkSense will retain the last system state
(enabled or disabled) from the last ignition
cycle when the ignition is placed in the ON/
RUN position.
ParkSense can be active only when the gear
selector is in REVERSE or DRIVE. If Park
-
Sense is enabled at one of these gear
selector positions, the system will remain
active until the vehicle speed is increased to
approximately 7 mph (11 km/h) or above. If
the gear selector is in REVERSE, a warning
will appear in the instrument cluster display
indicating the vehicle is above ParkSense
operating speed. The system will become
active again if the vehicle speed is decreased
to speeds less than approximately 6 mph
(9 km/h).
ParkSense Sensors
The four ParkSense sensors, located in the
rear fascia/bumper, monitor the area behind
the vehicle that is within the sensors’ field of
view. The sensors can detect obstacles from
approximately 12 inches (30 cm) up to
79 inches (200 cm) from the rear fascia/
bumper in the horizontal direction,
depending on the location, type and orienta -
tion of the obstacle. The six ParkSense sensors, located in the
front fascia/bumper, monitor the area in
front of the vehicle that is within the sensors’
field of view. The sensors can detect obsta
-
cles from approximately 12 inches (30 cm)
up to 47 inches (120 cm) from the front
fascia/bumper in the horizontal direction,
depending on the location, type and orienta -
tion of the obstacle.
ParkSense Warning Display
The ParkSense Warning screen is located
within the instrument cluster display. It
provides visual warnings to indicate the
distance between the rear fascia/bumper
and/or front fascia/bumper and the detected
obstacle. Refer to “Instrument Cluster
Display” in “Getting To Know Your Instru -
ment Panel” for further information.
ParkSense Display
The warning display will turn on indicating
the system status when the vehicle is in
REVERSE or when the vehicle is in DRIVE
and an obstacle has been detected.
The system will indicate a detected obstacle
by showing a single arc in one or more
regions based on the obstacle’s distance and
location relative to the vehicle.
CAUTION!
ParkSense is only a parking aid and it is
unable to recognize every obstacle,
including small obstacles. Parking curbs
might be temporarily detected or not
detected at all. Obstacles located above
or below the sensors will not be detected
when they are in close proximity.
The vehicle must be driven slowly when
using ParkSense in order to be able to
stop in time when an obstacle is
detected. It is recommended that the
driver looks over his/her shoulder when
using ParkSense.
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165
NOTE:
ParkSense will reduce the volume of the
radio, if on, when the system is sounding an
audio tone.
Front Park Assist Audible Alerts
ParkSense will turn off the Front Park Assist
audible alert (chime) after approximately
three seconds when an obstacle has been
detected, the vehicle is stationary, and the
brake pedal is applied.
Adjustable Chime Volume Settings
The Front and Rear chime volume settings
are programmable.

The settings may be programmed through the
Uconnect System. Refer to “Uconnect Settings”
in “Multimedia” for further information.
The chime volume settings include low,
medium, and high. The factory default
volume setting is medium.
ParkSense will retain its last known configu
-
ration state through ignition cycles.
Enabling And Disabling ParkSense
Front and Rear ParkSense can be enabled
and disabled with the ParkSense switch.
When the ParkSense switch is
pushed to disable the system,
the instrument cluster display
will show the “PARKSENSE
OFF” message for approximately
five seconds. Refer to “Instrument Cluster
Display” in “Getting To Know Your Instru -
ment Panel” for further information. When the gear selector is moved to
REVERSE and the system is disabled, the
instrument cluster display will show the
“PARKSENSE OFF” message for as long as
the vehicle is in REVERSE.
NOTE:
ParkSense is also not available while the
vehicle is in 4LO.
The ParkSense switch LED will be on when
ParkSense is disabled or requires service.
The ParkSense switch LED will be off when
the system is enabled. If the Sense switch is
pushed, and the system requires service, the
ParkSense switch LED will blink momen
-
tarily, and then the LED will be on.
WARNING ALERTS FOR FRONT
Front Distance (inches / cm) Greater than
47 inches (120 cm) 47-39 inches
(120-100 cm) 39-25 inches
(100-65 cm) 25-12 inches (65-30
cm) Less than 12 inches
(30 cm)
Arcs — Left NoneNoneNone2nd Flashing 1st Flashing
Arcs — Center None4th Solid 3rd Flashing 2nd Flashing 1st Flashing
Arcs — Right NoneNoneNone2nd Flashing 1st Flashing
Audible Alert Chime None NoneNone FastContinuous
Radio Volume Reduced No
NoNoYes Yes
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