2011 JEEP GRAND CHEROKEE radiator

Cooling System – Drain, Flush, and Refill
If the engine coolant (antifreeze) is dirty and contains a
considerable amount of sediment, clean and flush with
reliable cooling system cleaner. Follow with a thorough
rinsing to remove all deposits and chemicals. Properly
dispose of the old engine coolant (antifreeze).
Refer to the “Maintenance Schedule” for the proper
maintenance intervals.
Selection Of Coolant
Use only the manufacturer’s recommended engine cool-
ant (antifreeze). Refer to “Fluids, Lubricants, and Genu-
ine Parts” in “Maintaining Your Vehicle” for further
information.
CAUTION!
•Mixing of engine coolant (antifreeze), other than
the specified HOAT engine coolant (antifreeze),
may result in engine damage and may decrease
corrosion protection. If a non-HOAT engine cool-
ant (antifreeze) is introduced into the cooling
system in an emergency, it should be replaced with
the specified engine coolant (antifreeze) as soon as
possible.
•Do not use water alone or alcohol based engine
coolant (antifreeze) products. Do not use addi-
tional rust inhibitors or antirust products, as they
may not be compatible with the engine coolant
(antifreeze) and may plug the radiator.
7
MAINTAINING YOUR VEHICLE 503

NOTE:Mixing engine coolant (antifreeze) types will
decrease the life of the engine coolant (antifreeze) and
will require more frequent engine coolant (antifreeze)
changes.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of engine
coolant (antifreeze), and to ensure that engine coolant
(antifreeze) will return to the radiator from the coolant
recovery tank.
The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.
WARNING!
•The warning words DO NOT OPEN HOT on the
cooling system pressure cap are a safety precau-
tion. Never add engine coolant (antifreeze) when
the engine is overheated. Do not loosen or remove
the cap to cool an overheated engine. Heat causes
pressure to build up in the cooling system. To
prevent scalding or injury, do not remove the
pressure cap while the system is hot or under
pressure.
•Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or en-
gine damage may result.
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MAINTAINING YOUR VEHICLE 505

Disposal of Used Engine Coolant
Used ethylene glycol-based engine coolant (antifreeze) is
a regulated substance requiring proper disposal. Check
with your local authorities to determine the disposal
rules for your community. To prevent ingestion by ani-
mals and children, do not store ethylene glycol-based
engine coolant (antifreeze) in open containers or allow it
to remain in puddles on the ground. If ingested by a child
or pet, seek emergency assistance immediately. Clean up
any ground spills immediately.
Coolant Level
The coolant bottle provides a quick visual method for
determining that the engine coolant (antifreeze) level is
adequate. With the engine idling, and warm to normal
operating temperature, the level of the engine coolant
(antifreeze) in the bottle should be between the ranges
indicated on the bottle.The radiator normally remains completely full, so there is
no need to remove the radiator cap, unless checking for
engine coolant (antifreeze) freeze point or replacing en-
gine coolant (antifreeze). Advise your service attendant
of this. As long as the engine operating temperature is
satisfactory, the coolant bottle need only be checked once
a month.
When additional engine coolant (antifreeze) is needed to
maintain the proper level, it should be added to the
coolant bottle. Do not overfill.Points To Remember
NOTE:
When the vehicle is stopped after a few miles
(kilometers) of operation, you may observe vapor coming
from the front of the engine compartment. This is nor-
mally a result of moisture from rain, snow, or high
humidity accumulating on the radiator and being vapor-
ized when the thermostat opens, allowing hot engine
coolant (antifreeze) to enter the radiator.
506 MAINTAINING YOUR VEHICLE

If an examination of your engine compartment shows no
evidence of radiator or hose leaks, the vehicle may be
safely driven. The vapor will soon dissipate.
•Do not overfill the coolant recovery bottle.
•Check engine coolant (antifreeze) freeze point in the
radiator and in the coolant recovery bottle. If engine
coolant (antifreeze) needs to be added, contents of
coolant recovery bottle must also be protected against
freezing.
•If frequent engine coolant (antifreeze) additions are
required, or if the level in the coolant recovery bottle
does not drop when the engine cools, the cooling
system should be pressure tested for leaks.
•Maintain engine coolant (antifreeze) concentration at
50% HOAT engine coolant (antifreeze) (minimum)
and distilled water for proper corrosion protection of
your engine, which contains aluminum components.
•Make sure that the radiator and coolant recovery
bottle hoses are not kinked or obstructed.
•Keep the front of the radiator clean. If your vehicle is
equipped with air conditioning, keep the front of the
condenser clean.
•Do not change the thermostat for Summer or Winter
operation. If replacement is ever necessary, install
ONLY the correct type thermostat. Other designs may
result in unsatisfactory cooling performance, poor gas
mileage, and increased emissions.
Brake System
In order to assure brake system performance, all brake
system components should be periodically inspected.
Refer to the “Maintenance Schedule” for the proper
maintenance intervals.7
MAINTAINING YOUR VEHICLE 507

Cavity CartridgeFuseMini
Fuse Description
J18 20 Amp Blue Powertrain Control
Module/Powertrain
Control Module Trans-
mission Range
J19 60 Amp Yellow Radiator Fan Motor
HI/Radiator Fan Mo-
tor Low
J20 30 Amp Pink Front Wiper
J21 20 Amp Blue Front/Rear Washer
Control
J22 25 Amp Natural Sunroof Module
M1 15 Amp
Blue Stop LampsCavity Cartridge
FuseMini
Fuse Description
M2 20 Amp YellowElectronic Limit Slip
Differential/Air Sus-
pension
M3 20 Amp YellowLiftgate/Headrest
M5 25 Amp
Natural 115V AC Power In-
verter
M6 20 Amp
Yellow Cigar Lighter
M7 20 Amp
Yellow Power Outlet #2 (Swit-
chable)
M8 20 Amp
Yellow Front Heated Seat &
Steering Wheel
M9 20 Amp
Yellow Rear Heated Seats
M10 15 Amp
Blue Video/Universal Ga-
rage Door Opener
522 MAINTAINING YOUR VEHICLE

Fluid Level Check................... 512,513
Fluid Type ........................... 511
Special Additives ...................... 512
Torque Converter ...................... 356
Autostick ............................. 352
Auxiliary Electrical Outlet (Power Outlet) ...... 221
Auxiliary Power Outlet ................... 221
B-Pillar Location ........................ 399
Battery ............................... 493
Keyless Transmitter Replacement (RKE) ....... 26
Belts, Seat ............................ 52,98
Blind Spot Monitoring .................... 112
Body Mechanism Lubrication ............... 496
Brake Assist System ...................... 382
Brake Control System, Electronic ............. 381
Brake Fluid ............................ 508
Brake System ........................... 507
Anti-Lock (ABS) ....................... 381 Fluid Check
.......................... 508
Master Cylinder ....................... 508
Parking ............................. 379
Warning Light ........................ 253
Brake/Transmission Interlock ............... 350
Break-In Recommendations, New Vehicle ........ 95
Bulb Replacement ..................... 526,527
Bulbs, Light ............................ 100
Calibration, Compass ..................... 278
Camera, Rear ........................... 204
Capacities, Fluid ........................ 533
Caps, Filler Fuel ............................... 433
Power Steering ........................ 378
Radiator (Coolant Pressure) ............... 505
Car Washes ............................ 515
Carbon Monoxide Warning ...............97,428
Cargo (Vehicle Loading) ................... 436
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INDEX 565

Coolant Level......................... 506
Disposal of Used Coolant ................ 506
Drain, Flush, and Refill .................. 503
Inspection ........................... 502
Points to Remember .................... 506
Pressure Cap ......................... 505
Radiator Cap ......................... 505
Selection of Coolant (Antifreeze) .........503,533
Cruise Control (Speed Control) .............. 167
Cupholders ............................ 228
Customer Assistance ..................... 555
Data Recorder, Event ...................... 81
Daytime Running Lights ................... 149
Dealer Service .......................... 488
Defroster, Rear Window ................... 238
Defroster, Windshield ................98,326,333
Diagnostic System, Onboard ................ 485Dipsticks
Automatic Transmission ................. 513
Oil (Engine) .......................... 489
Power Steering ........................ 378
Disabled Vehicle Towing ................... 477
Disarming, Theft System ................... 22
Disposal Engine Oil ........................... 492
Used Engine Fluids .................... 492
Door Locks ............................. 33
Door Locks, Automatic .................... 34
Door Opener, Garage ..................... 208
Driving ............................... 370
Off-Pavement ......................... 370
Off-Road ............................ 370
Driving to Achieve Maximum Fuel Economy .... 273
DVD Player (Video Entertainment System™) .... 320
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INDEX 567