2020 JEEP CHEROKEE battery

STARTING AND OPERATING
154
ROCK — Off-road calibration is only avail -
able in 4WD LOW range. ROCK mode
provides the most aggressive 4WD perfor -
mance for extreme off road terrain. Use for
low speed obstacles such as large rocks,
deep ruts, etc.
NOTE:
ROCK mode is only available on the vehi -
cles equipped with the Off-Road package.
Activate the Hill Descent Control or Selec
Speed Control for steep downhill control.
Refer to “Electronic Brake Control System”
in “Safety” for further information.
STOP/START SYSTEM
The Stop/Start function was developed to
reduce fuel consumption. The system will
stop the engine automatically during a
vehicle stop if the required conditions are
met. Releasing the brake pedal or pressing
the accelerator pedal will automatically
restart the engine.
This vehicle has been upgraded with a heavy
duty battery, starter, as well as other engine
parts, to handle the additional engine starts.
Automatic Mode
The Stop/Start feature is enabled after every
normal customer engine start. At that time,
the system will go into STOP/START READY
and if all other conditions are met, can go
into a STOP/START AUTOSTOP ACTIVE
“Autostop” mode.
To Activate The Autostop Mode, The Following
Must Occur:
The system must be in STOP/START
READY state. A STOP/START READY
message will be displayed in the instru -
ment cluster display within the Stop/Start
section. Refer to “Warning Lights And
Messages” in “Getting To Know Your
Instrument Panel” in your Owner’s
Manual.
The vehicle must be completely stopped.
The gear selector must be in a forward
gear and the brake pedal depressed.
The engine will shut down, the tachometer
will move to the zero position and the Stop/
Start telltale will illuminate indicating you
are in Autostop. Customer settings will be
maintained upon return to an engine running
condition. Refer to the “Stop/Start System” in the
“Starting And Operating” in your Owner’s
Manual.
Possible Reasons The Engine Does Not
Autostop
Prior to engine shut down, the system will
check many safety and comfort conditions to
see if they are fulfilled. Detailed information
about the operation of the Stop/Start system
may be viewed in the instrument cluster
display Stop/Start Screen. In the following
situations, the engine will not stop:
Driver’s seat belt is not buckled
Driver’s door is not closed
Battery temperature is too warm or cold
Battery charge is low
The vehicle is on a steep grade
Cabin heating or cooling is in process and
an acceptable cabin temperature has not
been achieved
HVAC is set to full defrost mode at a high
blower speed
HVAC set to MAX A/C
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155
Engine has not reached normal operating
temperature
The transmission is not in a forward or
reverse gear
Hood is open
Vehicle is in 4WD LOW transfer case mode
(if equipped with 4WD)
Brake pedal is not pressed with sufficient
pressure with vehicle in DRIVE position
Other Factors Which Can Inhibit Autostop
Include:
Accelerator pedal input
Engine temp too high
5 mph threshold not achieved from
previous AUTOSTOP
Steering angle beyond threshold
ACC is on and speed is set
It may be possible for the vehicle to be driven
several times without the Stop/Start system
going into a STOP/START READY state
under more extreme conditions of the items
listed above.
To Start The Engine While In Autostop
Mode
While in a forward gear, the engine will start
when the brake pedal is released or the
throttle pedal is depressed. The transmission
will automatically re-engage upon engine
restart.
Conditions That Will Cause The Engine To Start
Automatically While In Autostop Mode:
The transmission gear selector is moved
out of DRIVE except in the PARK position.
To maintain cabin temperature comfort
HVAC is set to full defrost mode
HVAC system temperature or fan speed is
manually adjusted
Battery voltage drops too low
Low brake vacuum (e.g. after several brake
pedal applications)
Stop/Start OFF switch is pushed
A Stop/Start system error occurs
4WD system is put into 4WD LOW mode
(if equipped with 4WD) Conditions That Force An Application Of The
Electric Park Brake While In Autostop Mode:

The driver’s door is open and brake pedal
released
The driver’s door is open and the driver’s
seat belt is unbuckled
The engine hood has been opened
A Stop/Start system error occurs
If the Electric Park Brake is applied with the
engine off, the engine may require a manual
restart and the electric park brake may
require a manual release (depress brake
pedal and push Electric Park Brake switch).
Refer to “Instrument Cluster Display” in
“Getting To Know Your Instrument Panel” in
your Owner’s Manual.
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157
Possible Reasons The Engine Does Not
Autostop
Prior to engine shut down, the system will
check many safety and comfort conditions to
see if they are fulfilled. Detailed information
about the operation of the Stop/Start system
may be viewed in the instrument cluster
Stop/Start Screen. In the following situations
the engine will not stop:
Driver’s seat belt is not buckled.
Driver’s door is not closed.
Battery temperature is too warm or cold.
The vehicle is on a steep grade.
Cabin heating or cooling is in process and
an acceptable cabin temperature has not
been achieved.
HVAC is set to full defrost mode at a high
blower speed.
Engine has not reached normal operating
temperature.
Battery charge is low.
The transmission is not in DRIVE (auto-
matic transmission) or NEUTRAL (manual
transmission).
Hood is open.
Vehicle is in 4WD LOW transfer case
mode.
Exhaust system regeneration in process.
Other Factors Which Can Inhibit Autostop
Include:
Fuel level.
Accelerator pedal input (automatic trans-
mission only).
Engine temperature too high.
It may be possible for the vehicle to be driven
several times without the Stop/Start system
going into a STOP/START READY state
under more extreme conditions of the items
listed above.
To Start The Engine While In Autostop
Mode
Automatic Transmission:

While in DRIVE, the engine will start when the
brake pedal is released or the throttle pedal is
depressed. The transmission will automatically
re-engage upon engine restart. During this tran -
sition, the brakes will hold the vehicle to avoid
undesired vehicle movement.
Manual Transmission:

When the gear selector is in NEUTRAL, the
engine will start when the clutch pedal is
pressed. The vehicle will go into STOP/START
SYSTEM NOT READY mode until the vehicle
speed is greater than 4 mph (7 km/h).

Conditions That Will Cause The Engine To Start
Automatically While In Autostop Mode:

The transmission gear selector is moved
from DRIVE to REVERSE or NEUTRAL.
To maintain cabin temperature comfort.
HVAC is set to full defrost mode.
Battery voltage drops too low.
Low brake vacuum (e.g. after several brake
pedal applications).
Stop/Start OFF switch is pushed.
4WD system is put into 4WD LOW mode.
The emissions system requires it.
A Stop/Start system error occurs.
HVAC system temperature or fan speed is
manually adjusted.
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182
IN CASE OF EMERGENCY
HAZARD WARNING
FLASHERS
The Hazard Warning flasher switch is located
in the lower center area of the instrument
panel.Push the switch to turn on the
Hazard Warning flasher. When the
switch is activated, all directional
turn signals will flash on and off to
warn oncoming traffic of an emergency. Push
the switch a second time to turn off the
Hazard Warning flashers. This is an emergency warning system and it
should not be used when the vehicle is in
motion. Use it when your vehicle is disabled
and it is creating a safety hazard for other
motorists.
When you must leave the vehicle to seek
assistance, the Hazard Warning flashers will
continue to operate even though the ignition
is placed in the OFF position.
NOTE:
With extended use, the Hazard Warning
flashers may wear down your battery.
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IN CASE OF EMERGENCY
184
(Continued)
Replacing Exterior Bulbs
LED Bulb Service
Your vehicle may be equipped with LED
lamps, please see an authorized dealer for
service.
FUSES
General Information
The fuses protect electrical systems against
excessive current.
When a device does not work, you must
check the fuse element inside the blade fuse
for a break/melt.Also, please be aware that when using power
outlets for extended periods of time with the
engine off, may result in vehicle battery
discharge.
Blade Fuses
WARNING!
When replacing a blown fuse, always use
an appropriate replacement fuse with
the same amp rating as the original fuse.
Never replace a fuse with another fuse of
higher amp rating. Never replace a blown
fuse with metal wires or any other mate-
rial. Do not place a fuse inside a circuit
breaker cavity or vice versa. Failure to
use proper fuses may result in serious
personal injury, fire and/or property
damage.
Before replacing a fuse, make sure that
the ignition is off and that all the other
services are switched off and/or disen -
gaged.
If the replaced fuse blows again, contact
an authorized dealer.
If a general protection fuse for safety
systems (air bag system, braking
system), power unit systems (engine
system, transmission system) or steering
system blows, contact an authorized
dealer.
CAUTION!
If it is necessary to wash the engine
compartment, take care not to directly hit
the fuse box, and the windshield wiper
motors with water.
WARNING! (Continued)
1 — Fuse Element
2 — Blade Fuse With A Good/Functional
Fuse Element.
3 — Blade Fuse With A Bad/Not Functional
Fuse Element (Blown Fuse).
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185
Underhood Fuses
The Power Distribution Center is located in
the engine compartment near the battery.
This center contains cartridge fuses,
mini-fuses and relays. A label that identifies
each component is printed on the inside of
the cover.NOTE:
Fuses for safety systems (marked with *)
must be serviced by an authorized dealer.
Power Distribution Center
CavityBlade Fuse Cartridge Fuse Description
F06– – Not Used
F07 15 Amp Blue –Powertrain Control Module - PCM (Diesel) / Surge
Solenoid Purge Valve (Gas) – If Equipped (*)
F08 25 Amp Clear –Fuel Injectors (Gas), ECM (Gas), PCM/Fuel
Injectors (Diesel)(*)
F09 15 Amp Blue (Gas)
10 Amp Red (Diesel) –
Coolant Pump (Gas) – If Equipped
UREA Coolant Pump/PCM (Diesel) – If Equipped (*)
F10 20 Amp Yellow –Power Transfer Unit (PTU) – If Equipped
(*)
F11 – – Not Used
F12 10 Amp Red –Supply And Purging Pump (Diesel)
(*)
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IN CASE OF EMERGENCY
190
F6910 Amp Red –Transfer Case Switch (TSBM)/Active Grill Shutter
(AGS) – If Equipped With Gas Engine (*)
F70 5 Amp Tan –Intelligent Battery Sensor (IBS)
(*)
F71 – – Not Used
F72 10 Amp Red –Heated Mirrors (Gas) / PM Sensor (Diesel)
F73 –20 Amp Blue NOX Sensor #1 & #2 / Trailer Tow Backup (NAFTA
& Gas)(*)
F74 –30 Amp Pink Rear Defroster (EBL)

F75 20 Amp Yellow –Cigar Lighter – If Equipped
F76 20 Amp Yellow –Rear Differential Module (RDM) - If Equipped
(*)
F77 10 Amp Red –Hands Free Module, Brake Pedal Switch
(*)
F78 10 Amp Red –Diagnostic Port / Digital TV / TBM
(*)
F79 10 Amp Red –Integrated Center Stack (ICS)/Electric Park Brake
(EPB) SW/CD Module/Steering Control Module (SCCM)/HVAC/Instrument Panel Cluster (IPC) (*)
F80 20 Amp Yellow – Radio
CavityBlade Fuse Cartridge Fuse Description
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209
(F) Sealant Bottle And Hose Replacement:
1. Uncoil the Sealant Hose (clear in color).
2. Locate the red colored round SealantBottle release button at the lower right
hand corner of the kit.
3. Push and hold the Sealant Bottle release button, then pull out the bottle holding
the button.
4. Clean any remaining sealant from the Tire Service Kit housing.
5. Position the new Sealant Bottle in the housing so that the Sealant Hose aligns
with the hose slot in the front of the
housing. Push and hold the Sealant
Bottle release button, then push the
bottle into the housing by holding the
button. An audible click will be heard
indicating the bottle is locked into place.
Release the button.
6. Verify that the cap is installed on the fitting at the end of the Sealant Hose and
return the hose to its storage area
(located on top of the housing).
7. Return the Tire Service Kit to its storage location in the vehicle.
JUMP STARTING
If your vehicle has a discharged battery, it
can be jump started using a set of jumper
cables and a battery in another vehicle or by
using a portable battery booster pack. Jump
starting can be dangerous if done improp -
erly, so please follow the procedures in this
section carefully.
NOTE:
When using a portable battery booster pack,
follow the manufacturer’s operating instruc -
tions and precautions.
WARNING!
As required by current regulations, the
information on chemical substances for
the protection of human health and the
environment and on the safe use of the
sealing fluid are on the packaging label.
Compliance with the indications on the
label is an essential condition to ensure
the safety and effectiveness of the
product. Remember to carefully read the
label before use. The user of the product is
responsible for any damages caused by
improper use. The sealing fluid has an
expiration date. Replace the bottle if the
sealant has expired.
CAUTION!
Dispose of the bottle and the sealant
liquid properly. Have them disposed of in
compliance with national and local
regulations.
WARNING!
Do not attempt jump starting if the battery
is frozen. It could rupture or explode and
cause personal injury.
CAUTION!
Do not use a portable battery booster pack
or any other booster source with a system
voltage greater than 12 Volts or damage to
the battery, starter motor, alternator or
electrical system may occur.
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