2004 JEEP WRANGLER coolant level

Adding Coolant
When adding coolant, a minimum solution of recom-
mended 50% ethylene glycol antifreeze coolant in water
should be used. Use higher concentrations (not to exceed
70%) if temperatures below -37ÉF (-38ÉC) are anticipated.
Use only high purity water such as distilled or deionized
water when mixing the water/antifreeze solution. The
use of lower quality water will reduce the amount of
corrosion protection in the engine cooling system.
NOTE:Mixing coolant types will decrease the life of the
engine coolant and will require more frequent engine
coolant changes.
Please note that it is the owner's responsibility to main-
tain the proper level of protection against freezing ac-
cording to the temperatures occurring in the area where
the vehicle is operated.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of
coolant, and to insure that coolant will return to the
radiator from the coolant reserve 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 precaution.
Never add coolant when the engine is overheated.
Do not loosen or remove the cap to cool an over-
heated 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.
Coolant Level
The coolant bottle provides a quick visual method for
determining that the coolant level is adequate. The
coolant level must be at the FULL mark or above the
ADD mark on the bottle.
The radiator normally remains completely full, so there is
not need to remove the radiator cap unless checking for
coolant freeze point or replacing coolant. Advise your
MAINTAINING YOUR VEHICLE 241
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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 coolant 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 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 accumulat-
ing on the radiator and being vaporized when the
thermostat opens, allowing hot coolant 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.
²Do not overfill the coolant bottle.
²Check coolant freeze point in the system.
²If frequent coolant additions are required, or if the
level in the recovery bottle does not drop when the
engine cools, the cooling system should be pressure
tested for leaks.
²Maintain coolant concentration at 50% ethylene glycol
antifreeze (minimum) in water for proper corrosion
protection of your engine that contains aluminum
components.
²Make sure that the radiator and coolant bottle hoses
are not kinked or obstructed.
²Do 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.
Hoses and Vacuum/Vapor Harnesses
Inspect surfaces of hoses and nylon tubing for evidence
of heat and mechanical damage. Hard or soft spots,
brittle rubber, cracking, tears, cuts, abrasions, and exces-
sive swelling indicate deterioration of the rubber.
242 MAINTAINING YOUR VEHICLE

FLUID CAPACITIES
U.S. Metric
Fuel (Approximate)19 Gallons 72 Liters
Engine Oil with Filter
2.4 Liter Engine (SAE 5W-30, API Certified Engine Oil) 5 Qts 4.7 Liters
4.0 Liter Engine (SAE 10W-30, API Certified Engine Oil) 6 Qts 5.7 Liters
Cooling System *
2.4 Liter Engine (MopartAntifreeze/Coolant 5 Year/100,000
Mile Formula)9 Qts 8.5 Liters
4.0 Liter Engine (MopartAntifreeze/Coolant 5 Year/100,000
Mile Formula)10.5 Qts 9.9 Liters
* Includes heater and coolant recovery bottle filled to MAX level.
258 MAINTAINING YOUR VEHICLE

NOTE:Most vehicles are operated under the conditions
listed for Schedule ªB.º
Second is ScheduleªAº. It is for vehicles that are not
operated under any of the conditions listed under Sched-
ule ªB.º
Use the schedule that best describes your driving condi-
tions. Where time and mileage are listed, follow the
interval that occurs first.
CAUTION!
Failure to perform the required maintenance items
may result in damage to the vehicle.
At Each Stop for Fuel
²
Check the engine oil level about 5 minutes after a fully
warmed engine is shut off. Checking the oil level while
the vehicle is on level ground will improve the accu-
racy of the oil level reading. Add oil only when the
level is at or below the ADD or MIN mark.
²Check the windshield washer solvent, add as required.
Once a Month
²
Check the tire pressure and look for unusual wear or
damage.
²Inspect the battery and clean and tighten the terminals
as required.
²Check the fluid levels of the coolant reservoir, brake
master cylinder, and transmission, and add as needed.
²Check all lights and all other electrical items for correct
operation.
At Each Oil Change
²
Change the engine oil filter.
²Inspect the exhaust system.
²Inspect brake hoses.
²Check the coolant level, hoses, and clamps.
²Inspect manual transmission fluid level Ð if
equipped.
MAINTENANCE SCHEDULES 263
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About Your Brakes...................... 177
Add-A-Trunk........................... 65
Adding Washer Fluid.................... 155
Air Cleaner, Engine..................... 234
Air Conditioner Maintenance.............. 235
Air Conditioning....................... 151
Air Conditioning Controls................ 152
Air Conditioning, Operating Tips........... 154
Air Conditioning Refrigerant.............. 236
Air Filter............................. 234
Air Pressure, Tires...................... 192
Airbag................................ 22
Airbag Deployment...................... 27
Airbag Light........................29,118
Airbag Maintenance...................... 29
Airbag On/Off Switch.................... 26
Alignment and Balance.................. 195
Alterations/Modifications, Vehicle............ 8
Antenna, Satellite Radio.................. 147
Antifreeze (Engine Coolant)............... 258
Anti-Lock Brake System.................. 179
Anti-Lock Warning Light................. 119
Appearance Care....................... 248Ashtray............................... 62
Ashtrays and Lighter..................... 62
Automatic Dimming Mirror................ 46
Automatic Transmission...............165,245
Adding Fluid........................ 246
Fluid and Filter Changes................ 245
Fluid Level Check..................... 245
Fluid Type.......................... 245
Gear Ranges......................... 166
Shifting............................ 165
Special Additives..................... 246
Torque Converter..................... 170
Auxiliary Electrical Outlet................. 63
Auxiliary Power Outlet................... 63
Battery............................... 234
Emergency Starting.................... 216
Voltmeter........................... 116
Belts, Drive........................... 231
Belts, Seat............................. 17
Body Mechanism Lubrication.............. 237
Brake System.......................... 243
Anti-Lock........................... 179
288 INDEX

Coolant Level........................ 241
Disposal of Used Coolant............... 240
Drain, Flush, and Refill................. 239
Inspection........................... 239
Points to Remember................... 242
Pressure Cap........................ 241
Selection of Coolant................240,258
Temperature Gauge.................... 118
Corrosion Protection.................... 248
Crankcase Emission Control System......... 234
Cruise Control.......................... 60
Cruise Light........................... 116
Cup Holder............................ 64
Customer Assistance.................... 280
Daytime Running Lights.................. 58
Dealer Service......................... 227
Defroster, Rear Window.................. 154
Defroster, Windshield.................151,153
Delay Wipers........................... 58
Deploying, Airbag....................... 27
Diagnostic System, Onboard............... 225
Dimmer Switch, Headlight................. 57Dipsticks
Oil (Engine)......................... 228
Disabled Vehicle Towing................. 219
Disposal
Engine Oil.......................... 231
Used Coolant........................ 240
Door Locks............................ 15
Doors................................ 15
Drive Belts............................ 231
Driving.............................. 181
Off-Pavement........................ 181
Off-Road........................... 181
On Hills............................ 182
On Slippery Surfaces.................. 181
When to Use Low Range............... 181
Dual Top.............................. 66
Electrical Outlet, Auxiliary................. 63
Electrical Power Outlets................... 63
Electronic Speed Control.................. 60
Emergency Brake....................... 175
Emergency, In Case of
Brake Warning Light................... 119
290 INDEX

Coolant Temperature Gauge............. 118
Engine Oil Pressure Gauge.............. 117
Jacking............................. 211
Jump Starting........................ 216
Emission Control System Maintenance....226,262
Engine
Air Cleaner.......................... 234
Block Heater......................... 162
Break-In Recommendations............... 39
Compartment........................ 224
Exhaust Gas Caution................... 40
Fails to Start......................... 161
Flooded, Starting..................... 161
Fuel Requirements.................197,258
Jump Starting........................ 216
Oil .............................228,258
Oil Disposal......................... 231
Oil Filter............................ 231
Oil Pressure Gauge.................... 117
Oil Selection......................... 258
Overheating......................... 210
Starting............................ 160
Temperature Gauge.................... 118Engine Oil Viscosity Chart................ 230
Entry System, Illuminated................. 15
Exhaust Gas Caution..................... 40
Exhaust System........................ 238
Extender, Seat Belt....................... 21
Exterior Finish Care..................... 249
Fabric Care........................250,252
Fabric Top............................ 250
Filters
Air Cleaner.......................... 234
Engine Fuel......................... 234
Engine Oil.......................... 231
Finish Care........................... 249
Flashers
Hazard Warning...................... 210
Turn Signal.......................... 116
Flooded Engine Starting.................. 161
Fluid Capacities........................ 258
Fluid Level Checks...................... 248
Automatic Transmission................ 245
Engine Oil.......................... 228
Manual Transmission.................. 247
INDEX 291
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