2021 JEEP GRAND CHEROKEE Battery

WARNING!
boiling point. This may cause it to boil
unexpectedly during hard or prolonged
braking, resulting in sudden brake fail-
ure. This could result in a collision.
• Overfilling the brake fluid reservoir can
result in spilling brake fluid on hot en-
gine 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.
• Do not allow petroleum based fluid to
contaminate the brake fluid. Brake seal
components could be damaged, causing
partial or complete brake failure. This
could result in a collision.
Automatic Transmission
Fluid Level Check
The fluid level is preset at the factory and
does not require adjustment under normal
operating conditions. Routine fluid level
checks are not required; therefore the trans-
mission has no dipstick. An authorized dealercan check your transmission fluid level using
special service tools. If you notice fluid leak-
age or transmission malfunction, visit an au-
thorized dealer immediately to have the
transmission fluid level checked. Operating
the vehicle with an improper fluid level can
cause severe transmission damage.
CAUTION!
If a transmission fluid leak occurs, visit an
authorized dealer immediately. Severe
transmission damage may occur. An au-
thorized dealer has the proper tools to
adjust the fluid level accurately.
Maintenance-Free Battery
Your vehicle is equipped with a maintenance-
free battery. You will never have to add water,
nor is periodic maintenance required.
WARNING!
• Using the battery with low fluid will
irreparably damage the battery and may
cause an explosion.
WARNING!
• When performing any operation on the
battery or near it, always protect your
eyes with special goggles.
• Batteries contain substances which are
very dangerous for the environment. For
battery replacement, contact an autho-
rized dealership.
• Battery fluid is a corrosive acid solution
and can burn or even blind you. Do not
allow battery fluid to contact your eyes,
skin, or clothing. Do not lean over a
battery when attaching clamps. If acid
splashes in eyes or on skin, flush the
area immediately with large amounts of
water. Refer to “Jump Starting Proce-
dure” in “In Case Of Emergency” for
further information.
• Battery gas is flammable and explosive.
Keep flame or sparks away from the
battery. Do not use a booster battery or
any other booster source with an output
greater than 12 Volts. Do not allow cable
clamps to touch each other.
SERVICING AND MAINTENANCE
256

WARNING!
• Battery posts, terminals, and related ac-
cessories contain lead and lead com-
pounds. Wash hands after handling.
CAUTION!
• It is essential when replacing the cables
on the battery that the positive cable is
attached to the positive post and the
negative cable is attached to the nega-
tive post. Battery posts are marked posi-
tive (+) and negative (-) and are identi-
fied on the battery case. Cable clamps
should be tight on the terminal posts
and free of corrosion.
• If a “fast charger” is used while the
battery is in the vehicle, disconnect both
vehicle battery cables before connecting
the charger to the battery. Do not use a
“fast charger” to provide starting
voltage.
DEALER SERVICE
An authorized dealer has the qualified service
personnel, special tools, and equipment to
perform all service operations in an expert
manner. Service Manuals are available which
include detailed service information for your
vehicle. Refer to these Service Manuals be-
fore attempting any procedure yourself.
NOTE:
Intentional tampering with emissions control
systems may void your warranty and could
result in civil penalties being assessed
against you.
WARNING!
You can be badly injured working on or
around a motor vehicle. Only do service
work for which you have the knowledge
and the proper equipment. If you have any
doubt about your ability to perform a ser-
vice job, take your vehicle to a competent
mechanic.
Air Conditioner Maintenance
For best possible performance, your air con-
ditioner should be checked and serviced by
an authorized dealer at the start of each warm
season. This service should include cleaning
of the condenser fins and a performance test.
Drive belt tension should also be checked at
this time.
WARNING!
• Use only refrigerants and compressor
lubricants approved by the manufac-
turer for your air conditioning system.
Some unapproved refrigerants are flam-
mable and can explode, injuring you.
Other unapproved refrigerants or lubri-
cants can cause the system to fail, re-
quiring costly repairs. Refer to Warranty
Information Book, for further warranty
information.
• The air conditioning system contains re-
frigerant under high pressure. To avoid
risk of personal injury or damage to the
system, adding refrigerant or any repair
requiring lines to be disconnected
257

These effects can be reduced by timely rota-
tion of tires. The benefits of rotation are
especially worthwhile with aggressive tread
designs such as those on On/Off-Road type
tires. Rotation will increase tread life, help to
maintain mud, snow, and wet traction levels,
and contribute to a smooth, quiet ride.
Refer to the “Maintenance Plan” for the
proper maintenance intervals. More frequent
rotation is permissible if desired. The reasons
for any rapid or unusual wear should be
corrected prior to rotation being performed.
NOTE:
The premium Tire Pressure Monitor System
will automatically locate the pressure values
displayed in the correct vehicle position fol-
lowing a tire rotation.
The suggested rotation method is the
“rearward-cross” shown in the following dia-
gram.
STORING THE VEHICLE
If the vehicle should remain stationary for
more than a month, observe the following
precautions:
• Park your vehicle in a covered, dry and
possibly airy location the windows open
slightly.
• Check that the Electric Park Brake is not
engaged.
• Disconnect the negative (-) terminal from
the battery post and be sure that the battery
is fully charged. During storage check bat-
tery charge quarterly.• If you do not disconnect the battery from
the electrical system, check the battery
charge every 30 days.
• Clean and protect the painted parts by
applying protective waxes.
• Clean and protect polished metal parts by
applying protective waxes.
• Apply talcum powder to the front and rear
wiper blades and leave raised from the
glass.
• Cover the vehicle with an appropriate cover
taking care not to damage the painted sur-
face by dragging across dirty surfaces. Do
not use plastic sheeting which will not allow
the evaporation of moisture present on the
surface of the vehicle.
• Inflate the tires at a pressure of +7.25 psi
(+0.5 bar) higher than recommended on
the tire placard and check it periodically.
• Do not drain the engine cooling system.
• Whenever you leave the vehicle stationary
for two weeks or more, idle the engine for
approximately five minutes, with the air
conditioning system on and high fan speed.
This will ensure proper lubrication of the
Tire Rotation
273

system, thus minimizing the possibility of
damage to the compressor when the vehicle
is put back into operation.
NOTE:
When the vehicle has not been started or
driven for at least 30 days, an Extended Park
Start Procedure is required to start the ve-
hicle.
Refer to “Starting The Engine” in “Starting
And Operating” for further information.
CAUTION!
Before removal of the positive and nega-
tive terminals to the battery, wait at least a
minute with ignition switch in the OFF
position and close the driver’s door. When
reconnecting the positive and negative ter-
minals to the battery be sure the ignition
switch is in the OFF position and the
driver’s door is closed.
BODYWORK
Preserving The Bodywork
Washing
• Wash your vehicle regularly. Always wash
your vehicle in the shade using a mild car
wash soap, and rinse the panels completely
with clear water.
• If insects, tar, or other similar deposits have
accumulated on your vehicle, use a specific
detergent to remove.
• Use a high quality cleaner wax to remove
road film, stains and to protect your paint
finish. Take care never to scratch the paint.
• Avoid using abrasive compounds and power
buffing that may diminish the gloss or thin
out the paint finish.
CAUTION!
• Do not use abrasive or strong cleaning
materials such as steel wool or scouring
powder that will scratch metal and
painted surfaces.
CAUTION!
• Use of power washers exceeding
1,200 psi (8,274 kPa) can result in
damage or removal of paint and decals.
Special Care
• If you drive on salted or dusty roads or if you
drive near the ocean, hose off the undercar-
riage at least once a month.
• It is important that the drain holes in the
lower edges of the doors, rocker panels, and
trunk be kept clear and open.
• If you detect any stone chips or scratches in
the paint, touch them up immediately. The
cost of such repairs is considered the re-
sponsibility of the owner.
• If your vehicle is damaged due to a collision
or similar cause that destroys the paint and
protective coating, have your vehicle re-
paired as soon as possible. The cost of such
repairs is considered the responsibility of
the owner.
SERVICING AND MAINTENANCE
274

Pitch And Roll
The Pitch And Roll page displays the vehi-
cle’s current pitch (angle up and down) and
roll (angle side to side) in degrees. The pitch
and roll gauges provide a visualization of the
current vehicle angle.
Accessory Gauges
The Accessory Gauges page displays the cur-
rent status of the vehicle’s Coolant Tempera-
ture, Oil Temperature, Oil Pressure (Gas Ve-
hicles Only), Transmission Temperature, and
Battery Voltage.
Suspension Menu
1 — Suspension Articulation Indicator
2 — Current Ride Height
Pitch And Roll Menu
1 — Current Pitch
2 — Current Roll
Accessory Gauges Menu
1 — Coolant Temperature
2 — Oil Temperature
3 — Oil Pressure (Gas Vehicles Only)
4 — Battery Voltage
5 — Transmission Temperature
319

Audio Jack (AUX)
• The AUX allows a device to be plugged into
the radio and utilize the vehicle’s sound
system, using a 3.5 mm audio cable, to
amplify the source and play through the
vehicle speakers.
• Pressing the “AUX” button on the touch-
screen will change the mode to auxiliary
device if the audio jack is connected, allow-
ing the music from your device to be heard
through the vehicle's speakers. To activate
the AUX, plug in the audio jack.
• The functions of the device are controlled
using the device buttons. The volume may
be controlled using the radio or device.
USB Port
• Connect your compatible device into the
USB Port using a USB cable. USB Memory
sticks with audio files can also be used.
Audio from the device can be played on the
vehicle’s sound system while providing
metadata (artist, track title, album, etc.)
information on the radio display.• When connected, the compatible USB de-
vice can be controlled using the radio or
Steering Wheel Audio Controls to play, skip
to the next or previous track, browse, and
list the contents.
• The battery charges when plugged into the
USB port (if supported by the specific de-
vice).
• To route the USB cable out of the center
console, use the access cut out.
NOTE:
When connecting your device for the first
time, the system may take several minutes to
read your music, depending on the number of
files. For example, the system will take ap-
proximately five minutes for every
1,000 songs loaded on the device. Also dur-
ing the reading process, the Shuffle and
Browse functions will be disabled. This pro-
cess is needed to ensure the full use of your
features and only happens the first time it is
connected. After the first time, the reading
process of your device will take considerably
less time unless changes are made or new
songs are added to the playlist.
Bluetooth Streaming Audio
If using a Bluetooth equipped device you may
also be able to stream music to your vehicle's
sound system. Your connected device must
be Bluetooth compatible and paired with
your system (see Uconnect Phone for pairing
instructions). You can access the music from
your connected Bluetooth device by pressing
the “Bluetooth” button on the touchscreen
while in Media mode.
UCONNECT REAR SEAT
ENTERTAINMENT (RSE)
SYSTEM — IF EQUIPPED
Your Rear Seat Entertainment System is de-
signed to give your family years of enjoyment.
You can play your favorite CDs, DVDs or
Blu-ray Discs, listen to audio over the wire-
less headphones, or plug and play a variety of
standard video games or audio devices.
Getting Started
•Screen(s) located in the rear of front seats:
Open the LCD screen cover by lifting up on
the cover.
MULTIMEDIA
322

UCONNECT PHONE
Uconnect Phone (Bluetooth Hands Free Calling)
Uconnect 4 With 7–inch Display Radio Phone Menu
1 — Favorite Contacts
2 — Mobile Phone Battery Life
3 — Currently Paired Mobile Phone
4 — Siri
5 — Mute Microphone
6 — Transfer To/From Uconnect System
7 — Conference Call*
8 — Phone Settings
9 — Text Messaging**10 — Direct Dial Pad
11 — Recent Call Log
12 — Browse Phone Book Entries
13 — End Call
14 — Call/Redial/Hold
15 — Do Not Disturb
16 — Reply with Text Message
*—
Conference call feature only available on GSM mobile devices
** — Text messaging feature not available on all mobile phones (re-
quires Bluetooth MAP profile)
333

Uconnect 4C/4C NAV Phone Menu
1 — Currently Paired Mobile Phone
2 — Mobile Phone Signal Strength
3 — Do Not Disturb
4 — Reply with Text Message
5 — Current Phone Contact’s Name
6 — Conference Call*
7 — Phone Pairing
8 — Text Messaging Menu**
9 — Direct Dial Pad
10 — Contact Menu11 — Recent Call Log
12 — Favorite Contacts
13 — Mute Microphone
14 — Decline Incoming Call
15 — Answer/Redial/Hold
16 — Mobile Phone Battery Life
17 — Transfer To/From Uconnect System
*—
Conference call feature only available on GSM mobile devices
** — Text messaging feature not available on all mobile phones (re-
quires Bluetooth MAP profile)
MULTIMEDIA
334