radiator cap JEEP GRAND CHEROKEE LIMITED 2019 Owners Manual

Check the engine cooling system hoses for brittle rubber,
cracking, tears, cuts, and tightness of the connection at the
coolant recovery bottle and radiator. Inspect the entire
system for leaks. DO NOT REMOVE THE COOLANT
PRESSURE CAP WHEN THE COOLING SYSTEM IS HOT.
Cooling System — Drain, Flush And Refill
NOTE:Some vehicles require special tools to add coolant
properly. Failure to fill these systems properly could lead to
severe internal engine damage. If any coolant is needed to
be added to the system please contact an authorized dealer.
If the engine coolant (antifreeze) is dirty or contains visible
sediment, have an authorized dealer clean and flush with
OAT coolant (antifreeze) (conforming to MS.90032).
Refer to the “Maintenance Plan” in this section for the
proper maintenance intervals.
Selection Of Coolant
Refer to “Fluids And Lubricants” in “Technical Specifica-
tions” for further information. NOTE:
•
Mixing of engine coolant (antifreeze) other than speci-
fied Organic Additive Technology (OAT) engine coolant
(antifreeze), may result in engine damage and may
decrease corrosion protection. Organic Additive Tech-
nology (OAT) engine coolant is different and should not
be mixed with Hybrid Organic Additive Technology
(HOAT) engine coolant (antifreeze) or any “globally
compatible” coolant (antifreeze). If a non-OAT engine
coolant (antifreeze) is introduced into the cooling system
in an emergency, the cooling system will need to be
drained, flushed, and refilled with fresh OAT coolant
(conforming to MS.90032), by an authorized dealer as
soon as possible.
• Do not use water alone or alcohol-based engine coolant
(antifreeze) products. Do not use additional rust inhibi-
tors or antirust products, as they may not be compatible
with the radiator engine coolant and may plug the
radiator.
• This vehicle has not been designed for use with propyl-
ene glycol-based engine coolant (antifreeze). Use of
propylene glycolbased engine coolant (antifreeze) is not
recommended.
8
SERVICING AND MAINTENANCE 463

•Mixing engine coolant (antifreeze) types is not recom-
mended and can result in cooling system damage. If
HOAT and OAT coolant are mixed in an emergency,
have a authorized dealer drain, flush, and refill with
OAT coolant (conforming to MS.90032) as soon as pos-
sible.
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
expansion bottle/recovery tank if so equipped.
The cap should be inspected and cleaned if there is any
accumulation of foreign material on the sealing surfaces.

The radiator normally remains completely full, so there is
no need to remove the radiator/coolant pressure cap
unless checking for engine coolant (antifreeze) freeze point
or replacing coolant. 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, only OAT coolant that meets the
requirements of FCA Material Standard MS.90032 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 normally
a result of moisture from rain, snow, or high humidity
accumulating on the radiator and being vaporized when
the thermostat opens, allowing hot engine coolant (anti-
freeze) to enter the radiator.
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 expansion bottle. •
Check the coolant freeze point in the radiator and in the
coolant expansion bottle. If engine coolant (antifreeze)
needs to be added, the contents of the coolant expansion
bottle must also be protected against freezing.
• If frequent engine coolant (antifreeze) additions are
required, the cooling system should be pressure tested
for leaks.
• Maintain engine coolant (antifreeze) concentration at a
minimum of 50% OAT coolant (conforming to
MS.90032) and distilled water for proper corrosion pro-
tection of your engine which contains aluminum com-
ponents.
• Make sure that the coolant expansion bottle overflow
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 engine coolant (antifreeze) performance,
poor gas mileage, and increased emissions.
466 SERVICING AND MAINTENANCE

Automatic Dimming Mirror....................66
Automatic Door Locks .....................41, 42
Automatic Headlights ........................74
Automatic High Beams .......................73
Automatic Temperature Control (ATC) ............93
Automatic Transmission ..................253, 264
Adding Fluid .......................... .469
Fluid And Filter Change ...................469
Fluid Change .......................... .469
Fluid Level Check .....................468, 469
Fluid Type ......................... .468, 508
Gear Ranges ........................... .266
Special Additives ........................ .468
Automatic Transmission Limp Home Mode ........270
Auto Up Power Windows .....................97
Auxiliary Driving Systems ....................181
Auxiliary Electrical Outlet (Power Outlet) .........125
Auxiliary Power Outlet ..................... .125
Axle Fluid .............................. .508
Battery .............................. .150, 445
Charging System Light ................... .150
Keyless Key Fob Replacement ................22
Battery Saver Feature .........................76
Belts, Seat ............................... .246Blind Spot Monitoring
.......................181
Body Mechanism Lubrication ..................455
B-Pillar Location .......................... .476
Brake Assist System ........................ .168
Brake Control System, Electronic ................167
Brake Fluid .......................... .467, 508
Brake System ......................... .467, 499
Anti-Lock (ABS) ........................ .499
Fluid Check ........................... .467
Master Cylinder ........................ .467
Parking .............................. .260
Warning Light .......................... .149
Brake/Transmission Interlock ..................263
Br eak-In

Recommendations, New Vehicle ..........259
Bulb Replacement ......................... .398
Bulbs, Light ............................. .248
Camera, Rear ............................ .357
Capacities, Fluid .......................... .505
Caps, Filler Fuel ................................. .424
Oil (Engine) ........................ .442, 447
Radiator (Coolant Pressure) .................465
Carbon Monoxide Warning ................245, 504
Cargo Area Cover .......................111,112
12
INDEX 609

Cargo Compartment.........................111
Cargo Tie-Downs ...........................113
Car Washes .............................. .493
Cellular Phone ........................... .581
Certification Label ......................... .362
Chains, Tire ............................. .488
Changing A Flat Tire .....................413, 470
Chart, Tire Sizing .......................... .472
Check Engine Light (Malfunction Indicator Light). . . .163
Checking Your Vehicle For Safety ...............245
Checks, Safety ............................ .245
Child Restraint ........................... .225
Child Restraints Booster Seats ........................... .229
Child Seat Installation .....................241
How To Stow An unused ALR Seat Belt ........238
Infant And Child Restraints .................227
LATCH Positions ........................ .231
Lower Anchors And Tethers For Children .......231
Older Children And Child Restraints ...........228
Seating Positions ........................ .230
Clean Air Gasoline ........................ .502
Cleaning Wheels ............................... .487
Climate Control ............................85 Automatic
..............................86
Cold Weather Operation ..................... .258
Compact Disc (CD) Maintenance ................599
Compact Spare Tire ........................ .485
Console Storage ............................... .122
Console, Overhead ........................ .124
Contract, Service .......................... .604
Cooling Pressure Cap (Radiator Cap) ............465
Cooling System ........................... .462
Adding Coolant (Antifreeze) .................464
Coolant Level .......................... .465
Cooling Capacity ........................ .505
Disposal Of

Used Coolant ..................465
Drain, Flush, And Refill ................... .463
Inspection ......................... .462, 465
Points To Remember ..................... .466
Pressure Cap ........................... .465
Radiator Cap .......................... .465
Selection Of Coolant (Antifreeze) .......463, 505, 506
Corrosion Protection ....................... .492
Cruise Control (Speed Control) ..............290, 293
Cruise Light .......................... .159, 161
Cupholders .............................. .124
Customer Assistance ....................... .602
610 INDEX

Overheating, Engine....................... .425
Paddle Shifters ........................... .270
Paint Care ............................... .492
Parking Brake ............................ .260
ParkSense Active Park Assist ..................332
ParkSense System, Rear .................. .313, 322
Passive Entry ..............................37
Personalized Main Menu .....................511
Pets ................................... .244
Pinch Protection ....................... .101, 105
Placard, Tire And Loading Information ...........476
Power Brakes ............................... .499
Distribution Center (Fuses) ..................407
Door Locks ..............................36
Inverter .............................. .129
Mirrors ................................68
Outlet (Auxiliary Electrical Outlet) ............125
Seats ..................................49
Steering .............................. .286
Sunroof ............................ .99, 102
Tilt/Telescoping Steering Column ..............64
Windows ...............................96 Power Seats
Forward ................................49
Rearward ...............................49
Recline .................................50
Pregnant Women And Seat Belts ................207
Preparation For Jacking ..................... .414
Pretensioners Seat Belts ............................. .207
Quadra-Lift .............................. .279
Quadra-Trac ............................. .273
Radial Ply Tires ........................... .480
Radiator Cap (Coolant Pressure Cap) .............465
Radio Frequency General Information ................25, 31, 33, 41
Radio Operation .......................... .581
Radio Remote Controls ..................... .564
Rain Sensitive Wiper System ...................82
Rear Axle (Differential) ..................... .469
Rear Camera ............................. .357
Rear

Cross Path ........................... .186
Rear Cupholders .......................... .124
Rear ParkSense System .................. .313, 322
Rearview Mirror ............................6612
INDEX 617