2013 JEEP GRAND CHEROKEE ignition

Maintenance-Free Battery
Your vehicle is equipped with a maintenance-free battery.
You will never have to add water, nor is periodic main-
tenance required.
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.
• Accessories that can be plugged into the vehicle
power outlets draw power from the vehicle’s bat-
tery, even when not in use (i.e., cellular phones,
etc.). Eventually, if plugged in long enough, the
vehicle’s battery will discharge sufficiently to de-
grade battery life and/or prevent the engine from
starting.
WARNING!
• When temperatures are below the freezing point,
electrolyte in a discharged battery may freeze. Do
not attempt jump-starting because the battery
could rupture or explode and cause personal injury.
Battery temperature must be brought above the
freezing point before attempting a jump-start.
• Take care to avoid the radiator cooling fan when-
ever the hood is raised. It can start anytime the
ignition switch is on. You can be injured by moving
fan blades.
• Remove any metal jewelry such as watch bands or
bracelets that might make an inadvertent electrical
contact. You could be seriously injured.
(Continued)
568 MAINTAINING YOUR VEHICLE

Under normal operating conditions, the catalytic con-
verter will not require maintenance. However, it is im-
portant to keep the engine properly tuned to assure
proper catalyst operation and prevent possible catalyst
damage.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being assessed
against you.
In unusual situations involving grossly malfunctioning
engine operation, a scorching odor may suggest severe
and abnormal catalyst overheating. If this occurs, stop
the vehicle, turn off the engine and allow it to cool.
Service, including a tune-up to manufacturer’s specifica-
tions, should be obtained immediately. To minimize the possibility of catalytic converter dam-
age:
•
Do not shut off the engine or interrupt the ignition,
when the transmission is in gear and the vehicle is in
motion.
• Do not try to start the engine by pushing or towing the
vehicle.
• Do not idle the engine with any spark plug wires
disconnected or removed, such as when diagnostic
testing, or for prolonged periods during very rough
idle or malfunctioning operating conditions.
7
MAINTAINING YOUR VEHICLE 577

Cooling System
WARNING!
•When working near the radiator cooling fan,
disconnect the fan motor lead or turn the ignition
switch to the OFF position. The fan is temperature
controlled and can start at any time the ignition
switch is in the ON position.
• You or others can be badly burned by hot engine
coolant (antifreeze) or steam from your radiator. If
you see or hear steam coming from under the hood,
do not open the hood until the radiator has had
time to cool. Never try to open a cooling system
pressure cap when the radiator is hot.
Coolant Checks
Check the engine coolant (antifreeze) protection every 12
months (before the onset of freezing weather, where applicable). If the engine coolant (antifreeze) is dirty or
rusty in appearance, the system should be drained,
flushed and refilled with fresh coolant. Check the front of
the A/C condenser for any accumulation of bugs, leaves,
etc. If dirty, clean by gently spraying water from a garden
hose vertically down the face of the condenser.
Check the coolant recovery bottle tubing for brittle rub-
ber, cracking , tears, cuts and tightness of the connection
at the bottle and radiator. Inspect the entire system for
leaks.
With the engine at normal operating temperature (but
not running), check the cooling system pressure cap for
proper vacuum sealing by draining a small amount of
engine coolant (antifreeze) from the radiator drain cock.
If the cap is sealing properly, the engine coolant (anti-
freeze) will begin to drain from the coolant recovery
bottle. DO NOT REMOVE THE COOLANT PRESSURE
CAP WHEN THE COOLING SYSTEM IS HOT.
578 MAINTAINING YOUR VEHICLE

Cavity Car-tridgeFuse Mini
Fuse Description
J08 40 Amp Green Power Seat
J09 30 Amp Pink E-Brake
J10 30 Amp Pink Headlamp Wash
Relay Contact
J11 30 Amp Pink Drive Train Control
Module
J12 30 Amp Pink Rear Defroster
J13 60 Amp Yellow Main Ignition Off
Draw (IOD)
J14 20 Amp Blue Trailer Tow Lamps/
Park LampsCavity Car- tridgeFuse Mini
Fuse Description
J15 40 Amp Green Front Cabin Fan/
Blower
J17 40 Amp Green Starter Motor
Solenoid
J18 20 Amp Blue Powertrain Control
Module/Powertrain Control Module
Transmission Range
J19 60 Amp Yellow Radiator Fan Motor
HI/Radiator Fan Motor Low
J20 30 Amp Pink Front Wiper
596 MAINTAINING YOUR VEHICLE

Cavity Car-tridgeFuse Mini
Fuse Description
M20 15 Amp BlueInstrument Cluster
M21 20 Amp
Yellow Automatic Shut-
down 3
M22 10 Amp
Red Horns (Low/High)
– Right
M23 10 Amp
Red Horns (Low/High)
– Left
M24 25 Amp
Natural Rear Wiper
M25 20 Amp
Yellow Fuel Pump Motor
Output/Diesel Lift
Pump (Export Only)Cavity Car- tridgeFuse Mini
Fuse Description
M26 10 Amp RedDriver Door
Switch Bank
M27 10 Amp
Red Ignition Switch/
Wireless Control
Module/Keyless Entry Module
M28 15 Amp
Blue Powertrain
Controller/
Transmission Controller
M29 10 Amp
Red Tire Pressure Moni-
tor – If Equipped
M30 15 Amp
Blue J1962 Diag
Connector
7
MAINTAINING YOUR VEHICLE 599

CAUTION!
•When installing the totally integrated power mod-
ule cover, it is important to ensure the cover is
properly positioned and fully latched. Failure to do
so may allow water to get into the totally integrated
power module and possibly result in a electrical
system failure.
• When replacing a blown fuse, it is important to use
only a fuse having the correct amperage rating. The
use of a fuse with a rating other than indicated may
result in a dangerous electrical system overload. If
a properly rated fuse continues to blow, it indicates
a problem in the circuit that must be corrected.
VEHICLE STORAGE
If you are leaving your vehicle dormant for more than
21 days you may want to take steps to protect your
battery. You may:
• Remove fuse #J13 in the Totally Integrated Power
Module (TIPM) labeled Main Ignition-Off Draw (IOD).
• Or, disconnect the negative cable from the battery.
• Anytime you store your vehicle, or keep it out of
service (i.e. vacation) for two weeks or more, run the
air conditioning system at idle for about five minutes
in the fresh air and high blower setting. This will
ensure adequate system lubrication to minimize the
possibility of compressor damage when the system is
started again.
7
MAINTAINING YOUR VEHICLE 601

Ignition.................................14
Key .................................12
Ignition Key Removal .......................14
Illuminated Entry ..........................21
Immobilizer (Sentry Key) ....................17
Infant Restraint ...........................86
Information Center, Vehicle ..................325
Inside Rearview Mirror .....................124
Instrument Cluster ....................... .315
Instrument Panel and Controls ................313
Instrument Panel Lens Cleaning ...............594
Integrated Power Module (Fuses) ..............594
Interior Appearance Care ....................592
Intermittent Wipers (Delay Wipers) .............214
Introduction ..............................4
Inverter, Power .......................... .291
Jacking Instructions ....................... .540
Jack Location ........................... .537Jack Operation
.......................... .540
Jump Starting ........................... .548
Key-In Reminder ..........................16
Keyless Enter-N-Go ........................36
Keyless Entry System .......................22
Keyless Go ...............................12
Key, Programming .........................18
Key, Replacement ..........................18
Keys ...................................12
Key, Sentry (Immobilizer) ....................17
Kicker Sound System ...................... .430
Lane Change Assist ........................211
Lap/Shoulder Belts .........................54
Latches ................................116
Lead Free Gasoline ....................... .513
Leaks, Fluid .............................116
10
INDEX 647