warning light JEEP GRAND CHEROKEE 2023 Workshop Manual

178STARTING AND OPERATING
NOTE:
Night Vision only shows objects of interest that
are warmer or colder than the surroundings.
Adjust the instrument cluster dimmer control
brightness to make the image appear brighter
or dimmer.
To exit out of the Night Vision screen, select a
different menu in the instrument cluster display.
A yellow or red border and box highlight will appear
around objects of interest. More than one object of
interest may be highlighted.

Highlight Around Objects Of Interest

The highlighting of the object(s) of interest will
update in real time based upon the current Night
Vision assessment.
The two categories of Night Vision warnings are
Pedestrian Warnings and Animal Warnings. A Pedestrian or Animal Warning is considered
either Level 1 or Level 2. Level 1 warnings are
yellow, and Level 2 warnings are red. The colors
are not configurable.
Level 1 Warnings:
Yellow telltale in the instrument cluster display
Yellow highlights around the detected pedes
-
trian/animal
Occurs when the vehicle is moving at speeds
greater than 8 mph (13 km/h) and the target is
in or approaching the vehicle path
Level 2 Warnings:
Red telltale in the instrument cluster display
Red highlights around the detected pedestrian/
animal
Occurs when the vehicle is moving at speeds
greater than 8 mph (13 km/h) and a collision
with the detected pedestrian/animal is possible
The pedestrian/animal is directly in the vehicle
path, close to the headlight area
A video pop-up will display when there is a target
detected and the instrument cluster display is
not showing the Night Vision page
A chime will sound for a Level 2 Warning detec-
tion event
Only one telltale can be displayed at a time based
upon priority.
The priority order of the warnings from highest to
lowest is:

1. Pedestrian Warning Level 2

2. Animal Warning Level 2
3. Pedestrian Warning Level 1
4. Animal Warning Level 1
Level 2 Warnings may display in the Head Up
Display (if equipped).
NOTE:If the vehicle is stopped, or slowing down, all Level
2 warnings become Level 1 warnings.
You can enable or disable the warnings within the
Uconnect system Ú page 204.
If the warnings are off, the telltales, chimes, and
warning messages will all be off. Pedestrians and
animals can still be detected by the system, but
there will be no warnings.
Pedestrian Warning Telltale
Animal Warning Telltale

23_WL_OM_EN_USC_t.book Page 178

STARTING AND OPERATING179
(Continued)
The Night Vision alert status telltale will
be gray when the warnings are
suppressed. The telltale will also turn
gray to indicate that the alerts are
suppressed due to environmental factors (e.g.
daylight hours, external temperature is greater
than 86°F (30°C)) or if the gear selector is in
REVERSE. When the Night Vision alerts are active,
the telltale will be green Ú page 108.
Camera Washers
When the front window washer is activated, the
Night Vision camera will also be washed
Ú page 64.
DETECTION RANGE
The system can detect people 4 ft (1.25 m) tall or
greater in the upright position. The system can also
detect animals that are four-legged and 3 ft (1 m)
tall or greater in the upright position.
The detection distance for the system is between
26 ft (8 m) and 328 ft (100 m) from the front of the
vehicle.
The system may not be able to detect pedestrians
or animals in the following situations:
Pedestrian/animal is outside of the detection
range
Pedestrian/animal is fully or partially covered
Pedestrian/animal does not reach the minimum
detection height
NOTE:Other objects on the road that meet the height/
shape/temperature (e.g. sun exposure) of pedes -
trians/animals may be detected and classified as
targets.
WARNING!
Do not jerk the steering wheel in response to
a warning.
Never attempt to swerve around animals if
doing so would endanger you or others.
Do not stare at the image while driving. You
could crash and you or others could be
injured.
The Night Vision system only provides alerts to
objects of interest and cannot serve as a
substitute for the driver’s personal judgment.
The warnings are meant to direct your atten-
tion to the detected objects, but the Night
Vision system does not automatically brake
the vehicle and may not provide a warning
with enough time to help avoid a crash.
Warnings are only provided if a pedestrian or
large animal is detected by the system.
It is always the driver’s responsibility to be
attentive of road, traffic, and weather condi -
tions, vehicle speed, distance to the vehicle
ahead, and most importantly, brake opera -
tion, 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.
WARNING!
4

23_WL_OM_EN_USC_t.book Page 179

180STARTING AND OPERATING
SERVICE THE NIGHT VISION SYSTEM
When service conditions are present, the following
fault messages may appear in the instrument
cluster display when the vehicle is placed in the ON
position.
If "Night Vision Unavailable Sensor Blocked"
appears in the instrument cluster display, make
sure the camera is clear of snow, ice, mud, dirt or
other debris. The camera is located in the upper
fascia/bumper, inside the driver side grille slot.
Clean the camera using a soft wet cloth or by
pressing the Clean Camera button in the Uconnect
system. If the message continues to appear after
cycling the ignition, see an authorized dealer.
If “Night Vision Temporarily Unavailable” or “Night
Vision Unavailable Service Required" appears in
the instrument cluster display after cycling the
ignition, see an authorized dealer.
The camera must be properly aligned to work
correctly. If the camera needs adjustment, see an
authorized dealer. Do not attempt to adjust the
camera yourself.
NOTE:Alignment and performance of the Night Vision
may be affected by aftermarket modifications.
Mopar® parts should be used to get the optimal
performance of this system.
NIGHT VISION SYSTEM LIMITATIONS
The Night Vision display is deactivated under the
following conditions:
Vehicle is shifted into REVERSE
The ignition is not in the ON/RUN position
The headlights are off and the vehicle speed is
greater than 8 mph (13 km/h)
The Night Vision display warnings are suppressed
under the following conditions:
Daylight hours
Temperatures above 86°F (30°C)
The system may not be fully functional in the
following situations:
On steep hills
On tight curves of the road
If the camera/sensor is damaged or blocked by
dirt, snow, ice, or other debris
In poor visibility conditions such as heavy fog,
rain, snow, or other weather conditions
If the vehicle has been modified with after -
market parts and/or accessories
NOTE:If any of these conditions are present, the system
does not need service.
WARNING!
Night Vision can only detect pedestrians and
animals located within the range of the
infrared camera.
Night Vision may not detect pedestrians or
animals and highlight them if:
They are not in an upright position, for
example if they are sitting or lying down, or
if the pedestrian is riding a bicycle
The figure in the display appears incom -
plete, for example because the pedes -
trian or animal is partially behind a vehicle
The pedestrian/animal is not directly
ahead in the coverage area
The pedestrian/animal is part of a group
The pedestrian is wearing certain types of
clothing
The pedestrian/animal is moving too
quickly through the field of view
The sensor is blocked by dirt, rain, snow,
or ice

23_WL_OM_EN_USC_t.book Page 180

184STARTING AND OPERATING
2. Insert the fuel nozzle fully into the filler pipe – the nozzle opens and holds the flapper doors
while refueling.

Fuel Filler

3. Fill the vehicle with fuel – when the fuel nozzle “clicks” or shuts off the fuel tank is full.
4. Wait five seconds before removing the fuel nozzle to allow fuel to drain from nozzle.
5. Remove the fuel nozzle and close the fuel door. Engage the fuel door latch by pushing on
the rear outer edge near the center.
VEHICLE LOADING
GROSS VEHICLE WEIGHT RATING
(GVWR)
The GVWR is the total permissible weight of your
vehicle including driver, passengers, vehicle,
options and cargo. The Vehicle Certification Label
specifies maximum capacities of front and rear axle systems (GAWR). Total load must be limited so
GVWR and front and rear GAWR are not exceeded.
PAYLOAD
The payload of a vehicle is defined as the allowable
load weight a truck can carry, including the weight
of the driver, all passengers and cargo.
GROSS AXLE WEIGHT RATING (GAWR)
The GAWR is the maximum permissible load on the
front and rear axles. The load must be distributed
in the cargo area so that the GAWR of each axle is
not exceeded.
Each axle GAWR is determined by the components
in the system with the lowest load carrying capacity
(axle, springs, tires or wheels). Heavier axles or
suspension components sometimes specified by
purchasers for increased durability do not
necessarily increase the vehicle's GVWR.
TIRE SIZE
The tire size on the Vehicle Certification Label
represents the actual tire size on your vehicle.
Replacement tires must be equal to the load
capacity of this tire size.
RIM SIZE
This is the rim size that is appropriate for the tire
size listed.
WARNING!
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!
To avoid fuel spillage and overfilling, do not “top
off” the fuel tank after filling.

23_WL_OM_EN_USC_t.book Page 184

STARTING AND OPERATING193
Towing Requirements — Trailer Brakes
Do not interconnect the hydraulic brake system
or vacuum system of your vehicle with that of
the trailer. This could cause inadequate braking
and possible personal injury.
An electronically actuated trailer brake
controller is required when towing a trailer with
electronically actuated brakes. When towing a
trailer equipped with a hydraulic surge actuated
brake system, an electronic brake controller is
not required.
Trailer brakes are recommended for trailers
over 1,000 lb (453 kg) and required for trailers
in excess of 2,000 lb (907 kg).
Towing Requirements — Trailer Lights And
Wiring
Whenever pulling a trailer, regardless of the trailer
size, stop lights and turn signals on the trailer are
required for motoring safety.
The Trailer Tow Package may include a four- and
seven-pin wiring harness. Use a factory approved
trailer harness and connector.
NOTE:Do not cut or splice wiring into the vehicle’s wiring
harness.
The electrical connections are all complete to the
vehicle but you must mate the harness to a trailer
connector. Refer to the following illustrations.
NOTE:
Disconnect the trailer wiring connector from the
vehicle (or any other device plugged into
vehicle’s electrical connectors) before
launching a boat into water.
Be sure to reconnect once clear from water
area.

Four-Pin Connector

WARNING!
Do not connect trailer brakes to your vehicle's
hydraulic brake lines. It can overload your
brake system and cause it to fail. You might
not have brakes when you need them and
could have an accident.
Towing any trailer will increase your stopping
distance. When towing, you should allow for
additional space between your vehicle and the
vehicle in front of you. Failure to do so could
result in an accident.
CAUTION!

If the trailer weighs more than 1,000 lb (453 kg)
loaded, it should have its own brakes and they
should be of adequate capacity. Failure to do this
could lead to accelerated brake lining wear, higher
brake pedal effort, and longer stopping distances.

1 — Ground
2 — Park
3 — Left Stop/Turn
4 — Right Stop/Turn
4

23_WL_OM_EN_USC_t.book Page 193

STARTING AND OPERATING197
Shifting Into Transfer Case N (NEUTRAL)
Use the following procedure to prepare your
vehicle for recreational towing:

1. Bring the vehicle to a complete stop on level
ground, with the engine running.

2. Press and hold the brake pedal.
3. Shift the transmission into NEUTRAL. 4. If vehicle is equipped with Quadra-Lift air
suspension, ensure the vehicle is set to
Normal Ride Height with the Auto Entry/Exit
setting deselected.
NOTE:
Steps 1 through 4 are requirements that
must be met before pushing the N
(NEUTRAL) button, and must continue to be
met until the shift has been completed. If
any of these requirements are not met
before pushing the N (NEUTRAL) button or
are no longer met during the shift, then the
N (NEUTRAL) indicator light will flash contin -
uously until all requirements are met or until
the N (NEUTRAL) button is released.
The ignition must be in the ON/RUN position
for a shift to take place and for the position
indicator lights to be operable. If the ignition
is not in the ON/RUN position, the shift will
not take place and no position indicator
lights will be on or flashing.
A flashing N (NEUTRAL) position indicator
light indicates that shift requirements have
not been met.
CAUTION!
DO NOT dolly tow any 4WD vehicle. Towing
with only one set of wheels on the ground
(front or rear) will cause severe transmission
and/or transfer case damage. Tow with all
four wheels either ON the ground, or OFF the
ground (using a vehicle trailer).
Tow only in a forward direction. Towing this
vehicle backwards can cause severe damage
to the transfer case.
The transmission must be in PARK for recre -
ational towing.
Before recreational towing, perform the proce -
dure outlined under “Shifting into N
(NEUTRAL)” to be certain that the transfer
case is fully in N (NEUTRAL). Otherwise,
internal damage will result.
Towing this vehicle in violation of the above
requirements can cause severe transmission
and/or transfer case damage. Damage from
improper towing is not covered under the New
Vehicle Limited Warranty.
Do not use a bumper-mounted clamp-on tow
bar on your vehicle. The bumper face bar will
be damaged.
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 Electric Park 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 transmission is in PARK. The Electric Park
Brake should always be applied when the driver
is not in the vehicle.
CAUTION!
It is necessary to follow these steps to be certain
that the transfer case is fully in N (NEUTRAL)
before recreational towing to prevent damage to
internal parts.
4

23_WL_OM_EN_USC_t.book Page 197

STARTING AND OPERATING201
Standing Water
Avoid driving in standing water deeper than
24 inches (61 cm) with air suspension or
21 inches (53 cm) without air suspension, and
reduce speed appropriately to minimize wave
effects. Maximum speed is 5 mph (8 km/h).
Maintenance
After driving through deep water, inspect your
vehicle fluids and lubricants (engine oil,
transmission oil, axle, transfer case) to ensure the
fluids have not been contaminated. Contaminated
fluid (milky, foamy in appearance) should be
flushed/changed as soon as possible to prevent
component damage.
Driving In Snow, Mud And Sand
In heavy snow, when pulling a load, or for
additional control at slower speeds, shift the
transmission to a low gear and shift the transfer
case to 4WD LOW if necessary Ú page 131. Only
shift into a lower gear to maintain forward motion.
Over-revving the engine can spin the wheels and
traction will be lost.
Avoid abrupt downshifts on icy or slippery roads,
because engine braking may cause skidding and
loss of control.
Hill Climbing
NOTE:Before attempting to climb a hill, determine the
conditions at the crest and/or on the other side.
Before climbing a steep hill, shift the transmission
to a lower gear and shift the transfer case to 4WD
LOW. Use FIRST gear and 4WD LOW for very steep
hills.
If you stall or begin to lose forward motion while
climbing a steep hill, allow your vehicle to come to
a stop and immediately apply the brakes. Restart
the engine, and shift into REVERSE (R). Back slowly
down the hill, allowing the compression braking of
the engine to help regulate your speed. If the
brakes are required to control vehicle speed, apply
them lightly and avoid locking or skidding the tires. Remember, never drive diagonally across a hill.
Always drive straight up or down.
If the wheels start to slip as you approach the crest
of a hill, ease off the accelerator and maintain
forward motion by turning the front wheels slowly.
This may provide a fresh “bite” into the surface and
will usually provide traction to complete the climb.
Traction Downhill
When descending mountains or hills, use Hill
Descent Control or Selec-Speed Control to avoid
repeated heavy braking.
If not equipped with Hill Descent Control or
Selec-Speed Control use the following procedure:
Shift the transmission into a low gear, and the
transfer case into 4WD LOW range. Let the vehicle
go slowly down the hill with all four wheels turning
against engine compression drag. This will permit
you to control the vehicle speed and direction.
When descending mountains or hills, repeated
braking can cause brake fade with loss of braking
control. Avoid repeated heavy braking by
downshifting the transmission whenever possible.
WARNING!
If the engine stalls, you lose forward motion, or
cannot make it to the top of a steep hill or grade,
never attempt to turn around. To do so may
result in tipping and rolling the vehicle. Always
back carefully straight down a hill in REVERSE
gear. Never back down a hill in NEUTRAL using
only the brake.
4

23_WL_OM_EN_USC_t.book Page 201

212MULTIMEDIA
Night Vision Video Warning This setting will turn the Night Vision Video Warning and green/gray cluster
indicator light on or off.
ParkSense This setting will change the type of ParkSense alert when a close object is
detected and can provide both an audible chime and a visual display.
Front ParkSense Volume This setting adjusts the volume of the Front ParkSense system. The available
settings are “Low”, “Medium”, and “High”.
Rear ParkSense Volume This setting adjusts the volume of the Rear ParkSense system. The available
settings are “Low”, “Medium”, and “High”.
Rear ParkSense Braking Assist This setting will turn the Rear ParkSense Braking Assist on or off.
Side Distance Warning This setting will turn the Side Distance Warning on or off.
Drowsy Driver Detection This setting will monitor the driver’s driving habits and warn you of any
changes, indicating that the driver may be drowsy. The available options are
“On” and “Off”.
Blind Spot Alert This setting will change the type of alert provided when an object is detected
in a vehicle’s blind spot. The “Off” setting will turn off Blind Spot Alert. The
“Lights” setting will activate the Blind Spot Alert lights on the outside mirrors.
The “Lights & Chime” setting will activate the lights on the outside mirrors and
an audible chime.
Electric Power Steering Default This setting will change the Electric Power Steering Default. The available
options are “Comfort” for a lower effort steering experience, “Normal” for the
standard effort steering experience, and “Sport” for a higher effort steering
experience.
Hill Start Assist This setting will turn the Hill Start Assist system on or off.
Tire Fill Assist This setting will turn Tire Fill Assist on or off.
Setting NameDescription

23_WL_OM_EN_USC_t.book Page 212

248 (Continued)
SAFETY
SAFETY FEATURES
ANTI-LOCK BRAKE SYSTEM (ABS)
The ABS provides increased vehicle stability and
brake performance under most braking conditions.
The system automatically prevents wheel lock and
enhances vehicle control during braking.
The ABS performs a self-check cycle to ensure that
the ABS is working properly each time the vehicle
is started and driven. During this self-check, you
may hear a slight clicking sound as well as some
related motor noises.
The ABS is activated during braking when the
system detects one or more wheels are beginning
to lock. Road conditions such as ice, snow, gravel,
bumps, railroad tracks, loose debris, or panic stops
may increase the likelihood of ABS activation(s).
You also may experience the following normal
characteristics when the ABS activates:
ABS motor noise or clicking sounds (you may
continue to hear for a short time after the stop)
Brake pedal pulsations
A slight drop of the brake pedal at the end of the
stopThe ABS is designed to function with the Original
Equipment Manufacturer (OEM) tires. Modification
may result in degraded ABS performance.
Anti-Lock Brake System (ABS) Warning
Light
The yellow ABS Warning Light will turn on when the
ignition is placed in the ON/RUN mode and may
stay on for as long as four seconds.
If the ABS Warning Light remains on or comes on
while driving, it indicates that the anti-lock portion
of the brake system is not functioning and that
service is required. However, the conventional
brake system will continue to operate normally if
the ABS Warning Light is on.
WARNING!
The ABS contains sophisticated electronic
equipment that may be susceptible to interfer
-
ence caused by improperly installed or high
output radio transmitting equipment. This
interference can cause possible loss of
anti-lock braking capability. Installation of
such equipment should be performed by qual -
ified professionals.
Pumping of the Anti-Lock Brakes will diminish
their effectiveness and may lead to a collision.
Pumping makes the stopping distance longer.
Just press firmly on your brake pedal when you
need to slow down or stop.
The ABS cannot prevent the natural laws of
physics from acting on the vehicle, nor can it
increase braking or steering efficiency beyond
that afforded by the condition of the vehicle
brakes and tires or the traction afforded.
The ABS cannot prevent collisions, including
those resulting from excessive speed in turns,
following another vehicle too closely, or hydro -
planing.
The capabilities of an ABS equipped vehicle
must never be exploited in a reckless or
dangerous manner that could jeopardize the
user’s safety or the safety of others.
WARNING!

23_WL_OM_EN_USC_t.book Page 248

SAFETY249
If the ABS Warning Light is on, the brake system
should be serviced as soon as possible to restore
the benefits of Anti-Lock Brakes. If the ABS
Warning Light does not come on when the ignition
is placed in the ON/RUN mode, have the light
repaired as soon as possible.
DROWSY DRIVER DETECTION (DDD) —
I
F EQUIPPED
DDD detects when the driver is feeling fatigued
and warns the driver to pull over and take a break.
To Activate/Deactivate

DDD can be activated and deactivated through the
Uconnect system by selecting the following in order:

1. “Safety & Driving Assistance”

2. “Drowsy Driver Detection”
System Operation
Using feedback obtained from the driver’s steering
patterns, any buttons/switches that are pressed,
and from the front camera, the system implements
two operating logics:
The first operating logic takes the driving style
into account, observing the road and detecting
to what extent the driver can continue driving
with few lane crossing events.
The second operating logic measures the time
spent behind the wheel with the vehicle speed
above 40 mph (60 km/h) and below 100 mph
(160 km/h).
If the driving style indicates that the driver is
unable to follow the road trajectory and respect the
horizontal lane markings while within the operating
speed range of the system, a pop up will display on
the instrument cluster display to suggest that the
driver should stop for a break. An audible signal
will also sound.
If the driver accepts the suggestion provided by the
system by pushing the “OK” button on the left side
of the steering wheel, the message will disappear
from the display.
If the driver does not acknowledge the warning, it
will be displayed for 60 seconds and then
disappear.
NOTE:In the event of a DDD system failure, a dedicated
message will appear in the instrument cluster
display.

DDD Warning Message

REAR SEAT REMINDER ALERT (RSRA)
RSRA alerts you through a visual and auditory
notification of the possible presence of an object,
passenger, or pet in the rear seats if a rear door
was opened up to 10 minutes before the ignition
was placed in the ON/RUN position. RSRA does not
directly detect objects, passengers, or pets in the
rear seats. When the previous conditions are met,
RSRA displays the message “Check Rear Seat” on
the instrument cluster display and sounds an
auditory alert upon the driver placing the ignition in
the OFF position to exit the vehicle.
To enable or disable RSRA, see Ú page 204.WARNING!
The DDD system is an aid for driving and does
not relieve the driver of the responsibility of
driving the vehicle. Always drive alert and get
plenty of rest before driving. If you experience
fatigue while driving, do not wait for the DDD to
intervene with a warning. Choose a safe and
secure location where you can pull over safely
for a break. Only return to the road when you are
in the right physical and mental condition to
prevent endangering yourself and others.
6

23_WL_OM_EN_USC_t.book Page 249