2015 JEEP CHEROKEE Air pressure

CAUTION!(Continued)
•Your vehicle has been built with improved fluids
that protect the performance and durability of your
vehicle and also allow extended maintenance inter-
vals. Do not use chemical flushes in these compo-
nents as the chemicals can damage your engine,
transmission or air conditioning. Such damage is
not covered by the New Vehicle Limited Warranty.
If a flush is needed because of component malfunc-
tion, use only the specified fluid for the flushing
procedure.
Engine Oil
Checking Oil Level
To assure proper engine lubrication, the engine oil must
be maintained at the correct level. Check the oil level at
regular intervals, such as every fuel stop. The best time to
check the engine oil level is about five minutes after a
fully warmed up engine is shut off.
Checking the oil while the vehicle is on level ground will
improve the accuracy of the oil level readings. Always
maintain the oil level within the SAFE zone on the
dipstick. Adding 1 quart (0.9 L) of oil when the reading is
at the bottom of the SAFE zone will result in a reading at
the top of the safe zone on these engines.
CAUTION!
Overfilling or underfilling the crankcase will cause
aeration or loss of oil pressure. This could damage
your engine.
7
MAINTAINING YOUR VEHICLE 661

WARNING!
•Use only refrigerants and compressor lubricants
approved by the manufacturer for your air condi-
tioning system. Some unapproved refrigerants are
flammable and can explode, injuring you. Other
unapproved refrigerants or lubricants can cause the
system to fail, requiring costly repairs. Refer to
Warranty Information Book, located on the DVD,
for further warranty information.
•The air conditioning system contains refrigerant
under high pressure. To avoid risk of personal
injury or damage to the system, adding refrigerant
or any repair requiring lines to be disconnected
should be done by an experienced technician.
CAUTION!
Do not use chemical flushes in your air conditioning
system as the chemicals can damage your air condi-
tioning components. Such damage is not covered by
the New Vehicle Limited Warranty.
Refrigerant Recovery And Recycling R134a — If
Equipped
R-134a Air Conditioning Refrigerant is a hydrofluoro-
carbon (HFC) that is endorsed by the Environmental
Protection Agency and is an ozone-saving product. How-
ever, the manufacturer recommends that air conditioning
service be performed by authorized dealer or other
service facilities using recovery and recycling equipment.
NOTE:Use only manufacturer approved A/C system
PAG compressor oil, and refrigerants.
7
MAINTAINING YOUR VEHICLE 671

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 (anti-
freeze) needs to be added, the contents of the coolant
expansion bottle must also be protected against freez-
ing.
•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-
12106) and distilled water for proper corrosion protec-
tion of your engine which contains aluminum compo-
nents.
•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 emis-
sions.
Brake System
In order to assure brake system performance, all brake
system components should be inspected periodically.
Refer to the “Maintenance Schedule” for the proper
maintenance intervals.
692 MAINTAINING YOUR VEHICLE

•Check tire pressure and look for unusual wear or
damage. Rotate tires at the first sign of irregular wear,
even if it occurs before the oil indicator system turns
on.
•Check the fluid levels of the coolant reservoir and
brake master cylinder, fill as needed.
•Check function of all interior and exterior lights.
Required Maintenance Intervals.
Refer to the maintenance schedules on the following
page for the required maintenance intervals.
At Every Oil Change Interval As Indicated By Oil
Change Indicator System:
•Change oil and filter
•Rotate the tires.Rotate at the first sign of irregu-
lar wear, even if it occurs before the oil indicator
system turns on.
•Inspect battery and clean and tighten terminals as
required
•Inspect brake pads, shoes, rotors, drums, hoses
and park brake
•Inspect engine cooling system protection and
hoses
•Inspect exhaust system
•Inspect engine air cleaner if using in dusty or
off-road conditions
8
MAINTENANCE
SCHEDULES
MAINTENANCE SCHEDULES 733

About Your Brakes........................518
ABS (Anti-Lock Brake System)................519
Adaptive Cruise Control (ACC) (Cruise Control) . . .191
Adding Engine Coolant (Antifreeze)............688
Additives, Fuel...........................582
Air bag . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Air Bag
Advance Front Air Bag....................66
Air Bag Components.....................65
Air bag Operation.......................69
Air Bag Warning Light....................70
Driver Knee Air Bag......................79
Enhanced Accident Response................87
Event Data Recorder (EDR).................91
Front Air Bag . . . . . . . . . . . . . . . . . . . . . . . . . . .65
Front Passenger Knee Air bag...............79
If A Deployment Occurs...................85
Knee Impact Bolsters.....................79
Lighter Weight Passengers..................73
Maintaining Your Air Bag System............90
Occupant Classification Module (OCM)........71
Redundant Air Bag Warning Light............89
Side Air Bags...........................80
Transporting Pets.......................115
Air bag Deployment........................65
Air bag Light.............................87
Air bag Maintenance........................90
Air Cleaner, Engine (Engine Air Cleaner Filter) . . . .664
Air Conditioner Maintenance.................670
Air Conditioning..........................426
Air Conditioning Controls...................426
Air Conditioning Filter.....................448
Air Conditioning, Operating Tips..............447
Air Conditioning Refrigerant.................670
Air Conditioning System....................426
Air Filter...............................664
Air Pressure, Tires.........................553
748 INDEX

Child Restraints
Booster Seats...........................97
Child Restraints.........................92
Child Seat Installation....................113
How To Stow An Unused ALR Seat Belt.......109
Infants And Child Restraints................95
Install A LATCH-compatible Child Restraint . . . .108
Installing Child Restraints Using The Vehicle Seat
Belt.................................110
LATCH Positions.......................101
Locating The LATCH Anchorages............104
Lower Anchors And Tethers For Children......100
Older Children And Child Restraints..........95
Seating Positions........................99
Child Safety Locks.........................37
Clean Air Gasoline........................580
Cleaning
Wheels...............................701
Climate Control..........................426
Automatic............................426
Coin Holder.............................313
Cold Weather Operation....................473
Compact Disc (CD) Maintenance..............424
Compact Spare Tire........................559
Console................................313
Console, Floor...........................313
Contract, Service..........................741
Coolant Pressure Cap (Radiator Cap)...........690
Cooling System...........................686
Adding Coolant (Antifreeze)...............688
Coolant Capacity.......................727
Coolant Level..........................691
Disposal of Used Coolant.................691
Drain, Flush, and Refill...................687
Inspection............................687
Points to Remember.....................691
Pressure Cap..........................690
Radiator Cap..........................69010
INDEX 751

Aging (Life of Tires).....................562
Air Pressure...........................552
Chains...............................564
Changing.............................628
Compact Spare.........................559
General Information.....................552
High Speed...........................555
Inflation Pressures.......................553
Jacking...............................628
Life of Tires...........................562
Load Capacity.........................547
Pressure Monitor System (TPMS)............568
Pressure Warning Light...................336
Quality Grading........................745
Radial...............................555
Replacement...........................562
Rotation..............................566
Safety...............................540
Sizes................................542
Snow Tires............................557
Spinning.............................561
Trailer Towing.........................601
Tread Wear Indicators....................561
Tire Safety Information.....................540
Tire Service Kit...........................618
Tongue Weight/Trailer Weight................599
To Open Hood...........................166
Torque Converter Clutch....................493
Towing................................593
Disabled Vehicle........................648
Guide...............................598
Recreational...........................606
Weight...............................598
Towing Vehicle Behind a Motorhome...........606
Traction Control..........................521
Trailer Towing...........................593
Cooling System Tips.....................605
Hitches..............................597
766 INDEX