2004 Jeep Grand Cherokee Owners Manual

4. Locate the jack as shown. For the front axle, place it under the axle near the wheel to be changed. For the rear axle, place it under the axle as shown.

Front Jacking Location

244 WHAT TO DO IN EMERGENCIES

Rear Jacking Location

5. Raise the vehicle by turning the jack handle clockwise until the tire clears the ground.

WARNING!

Raising the vehicle higher than necessary can make the vehicle less stable and cause an accident. It could slip off the jack and hurt someone near it. Raise the vehicle only enough to remove the tire.

6. Remove the lug nuts and wheel. 7. Position the spare wheel/tire on the vehicle and install the lug nuts with the cone-shaped end toward the wheel. Lightly tighten the nuts until they are equally snug, using a crisscross pattern. To avoid the risk of forcing the vehicle off the jack, do not tighten the nuts fully until the vehicle has been lowered. 8. Lower the vehicle and remove the jack and wheel blocks.

9. Tighten the lug nuts securely in a crisscross pattern. Have an authorized service technician check that the torque is 85-115 ft.lbs. (115-156 N·m) as soon as possible.

10. Secure the jack, lug wrench, jack handle and tire in the proper locations.

WHAT TO DO IN EMERGENCIES 245

WARNING!

† A loose tire or jack thrown forward in a collision or hard stop could injure someone in the vehicle. Always stow the jack parts and the extra tire and wheel in the places provided. † Carefully follow these tire changing warnings to help prevent personal injury or damage to your vehicle:

† Always park on a firm, level surface as far from the edge of the roadway as possible before raising the vehicle. † Block the wheel diagonally opposite the wheel to be † Apply the parking brake firmly before jacking. † Never start the engine with the vehicle on a jack.

raised.

246 WHAT TO DO IN EMERGENCIES

† Do not let anyone sit in the vehicle when it is on a jack. † Do not get under the vehicle when it is on a jack. † Only use the jack in the positions indicated. † If working on or near a roadway, be extremely careful

of motor traffic.

JUMP STARTING PROCEDURE

NOTE: Check the charge indicator on top of the battery. If the indicator is light or yellow, replace the battery. 1. Wear eye protection and remove any metal jewelry such as watch bands or bracelets that might make an unintended electrical contact. 2. When boost is provided by a battery in another vehicle, park that vehicle within booster cable reach but without letting the vehicles touch. Set the parking brake, place the transmission in P (Park), and turn the ignition to OFF for both vehicles.

3. Turn off the heater, radio and all unnecessary electrical loads. 4. Connect one end of a jumper cable to the positive terminal of the discharged battery. Connect the other end of the same cable to the positive terminal of the booster battery. 5. Connect the other cable, first to the negative terminal of the booster battery and then connect the other end to a non-paint metal surface on the engine of the vehicle with the discharged battery. Make sure you have a good contact on the engine. 6. Start the engine in the vehicle which has the booster battery, let the engine idle a few minutes, then start the engine in the vehicle with the discharged battery. 7. When removing the jumper cables, reverse the above sequence exactly. Be careful of the moving belts and fan.

WHAT TO DO IN EMERGENCIES 247

† Do not use a booster battery or any other booster source that has a greater than 12–volt system, i.e., do not use a 24–volt power source. † Never attempt to jump start a discharged battery that is frozen, because it could rupture or explode during jump starting. † Be sure your vehicle is not touching the jump start † Observe all Battery Warnings in Section 7 of this

vehicle.

manual, while jump starting your vehicle.

NOTE: To start the vehicle following connection of a booster battery, the Security Alarm System must first be disabled by cycling a front door key cylinder or by using the keyless entry transmitter.

WARNING!

Jump starting can be dangerous. To avoid personal injury or damage to electrical components in vehicle, observe the following warnings: † Battery fluid is a corrosive acid solution and can burn or even blind you. Don’t allow battery fluid to contact your eyes, skin, or clothing. Don’t lean over a battery when attaching clamps. If acid splashes in eyes or on skin, flush the area immediately with large amounts of water.

248 WHAT TO DO IN EMERGENCIES

WARNING!

WARNING!

Do not attempt to push or tow your vehicle to get it started. Unburned fuel could enter the catalytic converter and, once the engine has started, ignite and damage the converter and vehicle.

Stand clear of vehicles when pulling with tow hooks. Tow straps and chains may break, causing serious injury.

TOWING A DISABLED VEHICLE The manufacturer recommends towing with all four wheels off the ground. Acceptable methods are to tow the vehicle on a flatbed or with one end of the vehicle raised and the other end on a towing dolly.

EMERGENCY TOW HOOKS — IF EQUIPPED If your vehicle is equipped with tow hooks, they will be mounted in the front of the vehicle.

CAUTION!

Tow hooks are for emergency use only, to rescue a vehicle stranded off road. Do not use tow hooks for tow truck hookup or highway towing. You could damage your vehicle.

MAINTAINING YOUR VEHICLE

CONTENTS

m 4.0L Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . 251
m 4.7L/4.7 HO Engine . . . . . . . . . . . . . . . . . . . . . 252
m Onboard Diagnostic System — OBD II . . . . . . . . 253
m Emissions Inspection And Maintenance

Programs

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 254
m Replacement Parts . . . . . . . . . . . . . . . . . . . . . . 255
m Dealer Service . . . . . . . . . . . . . . . . . . . . . . . . . 255
m Maintenance Procedures . . . . . . . . . . . . . . . . . . 256
. . . . . . . . . . . . . . . . . . . . . . . . . . 256

N Engine Oil

N Drive Belts - Check Condition And Tension . . . 261
N Spark Plugs . . . . . . . . . . . . . . . . . . . . . . . . . 261
N Catalytic Converter . . . . . . . . . . . . . . . . . . . . 261
N Crankcase Emission Control System . . . . . . . . 263
N Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 263
N Air Cleaner Filter . . . . . . . . . . . . . . . . . . . . . 264
N Maintenance-Free Battery . . . . . . . . . . . . . . . . 264
N Air Conditioner Maintenance . . . . . . . . . . . . . 265
N Power Steering Fluid Check . . . . . . . . . . . . . . 266

250 MAINTAINING YOUR VEHICLE

N Driveline And Steering Component

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . 267
N Body Lubrication . . . . . . . . . . . . . . . . . . . . . 267
N Windshield Wiper Blades . . . . . . . . . . . . . . . . 268
N Windshield Washers — Front And Rear . . . . . 268
N Exhaust System . . . . . . . . . . . . . . . . . . . . . . 269
N Cooling System . . . . . . . . . . . . . . . . . . . . . . . 269
N Hoses And Vacuum/Vapor Harnesses . . . . . . . 274
N Brake System . . . . . . . . . . . . . . . . . . . . . . . . 274
N Automatic Transmission . . . . . . . . . . . . . . . . 277
N Transfer Case . . . . . . . . . . . . . . . . . . . . . . . . 280
N Front/Rear Axle Fluid . . . . . . . . . . . . . . . . . . 281

N Appearance Care And Protection From

m Fuse Panel

Corrosion . . . . . . . . . . . . . . . . . . . . . . . . . . . 281
. . . . . . . . . . . . . . . . . . . . . . . . . . . 286
N Interior Fuses . . . . . . . . . . . . . . . . . . . . . . . . 286
N Underhood Fuses

(Power Distribution Center) . . . . . . . . . . . . . . 288
m Vehicle Storage . . . . . . . . . . . . . . . . . . . . . . . . 289
m Replacement Bulbs . . . . . . . . . . . . . . . . . . . . . . 289
m Fluid Capacities . . . . . . . . . . . . . . . . . . . . . . . . 291
m Recommended Fluids, Lubricants And Genuine

Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
N Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 292
N Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . 293

4.0L ENGINE

MAINTAINING YOUR VEHICLE 251

252 MAINTAINING YOUR VEHICLE

4.7L/4.7 HO ENGINE

ONBOARD DIAGNOSTIC SYSTEM — OBD II Your vehicle is equipped with a sophisticated onboard diagnostic system called OBD II. This system monitors the performance of the emissions, engine, and automatic transmission control systems. When these systems are operating properly, your vehicle will provide excellent performance and fuel economy, as well as engine emis- sions well within current government regulations. If any of these systems require service, the OBD II system will turn on the “Malfunction Indicator Light.” It will also store diagnostic codes and other information to assist your service technician in making repairs. Al- though your vehicle will usually be drivable and not need towing, see your dealer for service as soon as possible.

MAINTAINING YOUR VEHICLE 253

CAUTION!

† Prolonged driving with the “Malfunction Indica- tor Light” on could cause further damage to the emission control system. It could also affect fuel economy and driveability. The vehicle must be serviced before any emissions tests can be per- formed. † If the “Malfunction Indicator Light” is flashing while the engine is running, severe catalytic con- verter damage and power loss will soon occur. Immediate service is required.

254 MAINTAINING YOUR VEHICLE

EMISSIONS INSPECTION AND MAINTENANCE PROGRAMS In some localities, it may be a legal requirement to pass an inspection of your vehicle’s emissions control system. Failure to pass could prevent vehicle registration.

For states which have an I/M (Inspection and Maintenance) requirement, this check verifies the following: the MIL (Malfunction Indicator Lamp) is functioning and is not on when the engine is running, and that the OBD (On Board Diagnostic) system is ready for testing. Normally, the OBD system will be ready. The OBD system may not be ready if your vehicle was recently serviced, if you recently had a dead battery, or a battery replacement. If the OBD system should be determined not ready for the I/M test, your vehicle may fail the test.

Your vehicle has a simple ignition key actuated test which you can use prior to going to the test station. To check if your vehicle’s OBD system is ready, you must do the following: 1. Insert your ignition key into the ignition switch. 2. Turn the ignition to the ON position, but do not crank or start the engine. 3. If you crank or start the engine, you will have to start this test over. 4. As soon as you turn your key to the ON position, you will see your MIL symbol come on as part of a normal bulb check. 5. Approximately 15 seconds later, one of two things will happen:

a. The MIL will flash for about 10 seconds and then return to being fully illuminated until you turn off the

ignition key or start the engine. This means that your vehicle’s OBD system is not ready and you should not proceed to the I/M station. b. The MIL will not flash at all and will remain fully illuminated until you turn off the ignition key or start the engine. This means that your vehicle’s OBD system is ready and you can proceed to the I/M station.

If your OBD system is not ready, you should see your authorized dealer or repair facility. If your vehicle was recently serviced or had a battery failure or replacement, you may need to do nothing more than drive your vehicle as you normally would in order for your OBD system to update. A recheck with the above test routine may then indicate that the system is now ready. Regardless of whether your vehicle’s OBD system is ready or not ready, if the MIL symbol is illuminated during normal vehicle operation, you should have your

MAINTAINING YOUR VEHICLE 255

vehicle serviced before going to the I/M station. The I/M station can fail your vehicle because the MIL symbol is on with the engine running.

REPLACEMENT PARTS Use of genuine Mopart parts for normal/scheduled maintenance and repairs is highly recommended to in- sure the designed performance. Damage or failures caused by the use of non-Mopart parts for maintenance and repairs will not be covered by the manufacturer’s warranty.

DEALER SERVICE Your dealer has the qualified service personnel, special tools and equipment to perform all service operations in an expert manner. Service Manuals are available which include detailed service information for your vehicle. Refer to these manuals before attempting any procedure yourself.

256 MAINTAINING YOUR VEHICLE

NOTE: systems can result against you.

Intentional tampering with emissions control in civil penalties being assessed

WARNING!

You can be badly injured working on or around a motor vehicle. Do only that service work for which you have the knowledge and the proper equipment. If you have any doubt about your ability to perform a service job, take your vehicle to a competent mechanic.

MAINTENANCE PROCEDURES The pages that follow contain the required maintenance services determined by the engineers who designed your vehicle. Besides the maintenance items for which there are fixed maintenance intervals, there are other items that should operate satisfactorily without periodic maintenance. However, if a malfunction of these items does occur, it could adversely affect the engine or vehicle performance. These items should be inspected if a malfunction is observed or suspected. 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 5
minutes after a fully warmed engine is shut off or before starting the engine after it has sat overnight.

MAINTAINING YOUR VEHICLE 257

4.0L Engines

4.7L Engines

Checking the oil while the vehicle is on level ground will improve the accuracy of the oil level readings. Maintain the oil level between the MIN and MAX or ADD and SAFE markings on the dipstick. Adding 1 U.S. Quart (0.95L) of oil when the reading is at the MIN mark will result in a MAX reading on these engines.

258 MAINTAINING YOUR VEHICLE

CAUTION!

Overfilling or underfilling the crankcase will cause aeration or loss of oil pressure. This could damage your engine.

Change Engine Oil Road conditions as well as your kind of driving affect the interval at which your oil should be changed. Check the following to determine if any apply to you: † Day or night temperatures are below 32°F (0°C) † Stop and go driving † Extensive engine idling † Driving in dusty conditions † Short trips of less than 10 miles (16.2 km)

speeds during hot weather, above 90°F (32°C)

† More than 50% of your driving is at sustained high † Trailer towing † Taxi, Police, or delivery service (Commercial Service) † Off road or desert operation † If equipped for and operating with E-85 (ethanol) fuel If ANY of these apply to you, then change your engine oil every 3,000 miles (5 000 km) or 3 months, whichever comes first, and follow the maintenance recommenda- tions in “Maintenance Schedule B.” If none of these apply to you, then change your engine oil every 6,000 miles (10 000 km) or 6 months, whichever comes first. NOTE: Under no circumstances should oil change in- tervals exceed 6,000 miles (10 000 km) or 6 months whichever comes first.

Engine Oil Selection For best performance and maximum protection for all engines under all types of operating conditions, the manufacturer recommends engine oils that are API Cer- tified and meet the requirements of DaimlerChrysler Material Standard MS-6395. American Petroleum Institute (API) Engine Oil Identification Symbol

This symbol means that the oil has been certified by the American Petroleum Institute (API). The manufacturer only recommends API Certified engine oils.

MAINTAINING YOUR VEHICLE 259

Engine Oil Viscosity Chart The proper SAE viscosity grade of engine oil should be selected based on the following recommendation and be within the operating temperature shown in the engine oil viscosity chart.

4.0L Engines

260 MAINTAINING YOUR VEHICLE

4.7L/4.7L HO Engines

Materials Added to Engine Oils The manufacturer strongly recommends against the ad- dition of any additives (other than leak detection dyes) to engine oil. Engine oil is an engineered product and it’s performance may be impaired by supplemental addi- tives.

Disposing of Used Engine Oil Care should be taken in disposing of the used engine oil from your vehicle. Used oil, indiscriminately discarded, can present a problem to the environment. Contact your local authorized dealer, service station, or governmental agency for advice on how and where used oil can be safely discarded in your area. Engine Oil Filter The engine oil filter should be replaced with a new filter at every oil change. Engine Oil Filter Selection All of the manufacturer’s engines have a full-flow type disposable oil filter. Use a filter of this type for replace- ment. The quality of replacement filters varies consider- ably. Only high quality filters should be used to assure most efficient service. Mopart engine oil filters are high quality oil filters and are recommended.

Drive Belts - Check Condition and Tension At the mileages shown in the appropriate “Maintenance Schedule,” check all drive belts for condition and proper tension. Improper belt tension can cause belt slippage and failure. Inspect the drive belt for evidence of cuts, cracks, or glazing and replace them if there is any sign of damage which could result in belt failure. If adjustment is re- quired, adjust the belts according to the specifications and procedures shown in the Service Manual. Special tools are required to properly measure tension and to restore belt tension to factory specifications. Also, check belt routing to make sure there is no interference between the belts and other engine components.

MAINTAINING YOUR VEHICLE 261

Spark Plugs Spark plugs must fire properly to assure engine perfor- mance and emission control. New spark plugs should be installed at the specified mileage. The entire set should be replaced if there is any malfunction due to a faulty spark plug. Refer to the “Vehicle Emission Control Informa- tion” label in the engine compartment for spark plug information. Catalytic Converter The catalytic converter requires the use of unleaded fuel only. Leaded gasoline will destroy the effectiveness of the converter as an emission control device. 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.

262 MAINTAINING YOUR VEHICLE

CAUTION!

WARNING!

Damage to the catalytic converter can result if your vehicle is not kept in proper operating condition. In the event of engine malfunction, particularly involv- ing engine misfire or other apparent loss of perfor- mance, have your vehicle serviced promptly. Contin- ued operation of your vehicle with a severe malfunction could cause the converter to overheat, resulting in possible damage to the converter and vehicle.

A hot exhaust system can start a fire if you park over materials that can burn. Such materials might be grass or leaves coming into contact with your ex- haust system. Do not park or operate your vehicle in areas where your exhaust system can contact any- thing that can burn.

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 † Do not idle the engine with any spark plug wires disconnected or removed, such as when diagnostic testing. † Do not idle the engine for prolonged periods during very rough idle or malfunctioning operating condi- tions.

vehicle.

† Do not allow vehicle to run out of fuel.

MAINTAINING YOUR VEHICLE 263

Intentional tampering with emissions control in civil penalties being assessed

NOTE: systems can result against you. Crankcase Emission Control System Proper operation of this system depends on freedom from sticking or plugging due to deposits. As vehicle mileage builds up, the PCV valve and passages may accumulate deposits. If a valve is not working properly, replace it with a new valve. DO NOT ATTEMPT TO CLEAN THE OLD PCV VALVE! Check ventilation hose for indication of damage or plugging deposits. Replace if necessary. Fuel Filter A plugged fuel filter can cause hard starting or limit the speed at which a vehicle can be driven. Should an excessive amount of dirt accumulate in the fuel tank, frequent replacement of the fuel filter which is mounted in the fuel tank may be necessary.

264 MAINTAINING YOUR VEHICLE

Air Cleaner Filter Under normal driving conditions, replace the air filter at the intervals shown on “Maintenance Schedule A.” If, however, you drive the vehicle frequently under dusty or severe conditions, the filter element should be inspected periodically and replaced if necessary at the intervals shown on “Maintenance Schedule B.”

WARNING!

The air cleaner can provide protection in the case of engine backfire. Do not remove the air cleaner unless it is necessary for repair or maintenance. Make sure that no one is near the engine compart- ment before starting the vehicle with the air cleaner removed. Failure to do so can result in serious personal injury.

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.

WARNING!

Battery posts, terminals, and related accessories con- tain lead and lead compounds. Always wash hands after handling the battery.

To determine the battery charge, check the battery test indicator (if equipped) on top of the battery. Refer to the illustration.

MAINTAINING YOUR VEHICLE 265

CAUTION!

It is essential when replacing the cables on the battery that the positive cable is attached to the positive post and the negative cable is attached to the negative post. Battery posts are marked (+) positive and negative (-) and identified on the battery case. Also, if a “fast charger” is used while battery is in the vehicle, disconnect both vehicle battery cables be- fore connecting the charger to battery. Do not use a “fast charger” to provide starting voltage.

Air Conditioner Maintenance For best possible performance, your air conditioner should be checked and serviced by an Authorized Dealer at the start of each warm season. This service should include cleaning of the condenser fins and a performance test. Drive belt tension should also be checked at this time.

266 MAINTAINING YOUR VEHICLE

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. † 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 repairman.

Refrigerant Recovery and Recycling R-134a Air Conditioning Refrigerant is a hydrofluorocar- bon (HFC) that is endorsed by the Environmental Pro- tection Agency and is an ozone-saving product. How- ever, the manufacturer recommends that air conditioning service be performed by dealers or other service facilities using recovery and recycling equipment. NOTE: Air Conditioning systems found to be contami- nated with A/C System Sealers, Stop Leak Products, Seal Conditioners, Compressor Oil, or Refrigerants not ap- proved by the manufacturer, voids the warranty for the Air Conditioning system. Power Steering Fluid Check Checking the power steering fluid level at a defined service interval is not required. The fluid should only be checked if a leak is suspected, abnormal noises are

apparent, and/or the system is not functioning as antici- pated. Coordinate inspection efforts through a certified “DaimlerChrysler Dealership.”

WARNING!

Fluid level should be checked on a level surface with the engine off to prevent injury from moving parts, and to insure accurate fluid level reading. Do not overfill. Use only the manufacturer’s recommended fluid.

If necessary, add fluid to restore to the proper indicated level. With a clean cloth, wipe any spilled fluid from all surfaces. Refer to Recommended Fluids, Lubricants, and Genuine Parts for correct fluid type.

MAINTAINING YOUR VEHICLE 267

Driveline And Steering Component Lubrication U-joints (cardan joints) are sealed and do not require lubrication. Prop shafts, yokes, ball joints and other driveline and steering components may be provided with grease fittings for lubrication. Lubrication of these com- ponents at the intervals specified in the appropriate “Maintenance Schedule” in Section 8 is very important, particularly if your vehicle is subjected to off-road or other heavy-duty use. See your authorized dealer for complete service information. Body Lubrication Locks and all body pivot points, including such items as seat tracks, doors, tailgate and hood hinges, should be lubricated periodically to assure quiet, easy operation and to protect against rust and wear. Prior to the appli- cation of any lubricant, the parts concerned should be wiped clean to remove dust and grit; after lubricating excess oil and grease should be removed. Particular

268 MAINTAINING YOUR VEHICLE

attention should also be given to hood latching compo- nents to insure proper function. When performing other underhood services, the hood latch, release mechanism and safety catch should be cleaned and lubricated. The external lock cylinders should be lubricated twice a year, preferably in the fall and spring. Apply a small amount of a high quality lubricant such as Mopart Lock Cylinder Lubricant directly into the lock cylinder. Windshield Wiper Blades The rubber edges of the wiper blades and the windshield should be cleaned periodically with a sponge or soft cloth and a mild nonabrasive cleaner to remove accumulations of salt or road film. Operation of the wipers on dry glass for long periods may cause deterioration of the wiper blades. Always use washer fluid when using the wipers to remove salt or dirt from a dry windshield.

Avoid using the wiper blades to wipe frost or ice from the windshield. Keep the blade rubber out of contact with petroleum products such as engine oil, gasoline, etc. Windshield Washers — Front and Rear On vehicles equipped with a Vehicle Information Center, the low washer fluid level will be indicated. When the sensor detects a low fluid level, the windshield will light on the vehicle graphic outline and the “Washer Fluid Low” message will be displayed. The fluid reservoir for the windshield washers and the rear window washer is shared. It is located in the front of the engine compartment on the passenger side and should be checked for fluid level at regular intervals. Fill the reservoir with windshield washer solvent (not radia- tor antifreeze) and operate the system for a few seconds to flush out the residual water.

WARNING!

Commercially available windshield washer solvents are flammable. They could ignite and burn you. Care must be exercised when filling or working around the washer solution.

Exhaust System The best protection against carbon monoxide entry into the vehicle body is a properly maintained engine exhaust system. If you notice a change in the sound of the exhaust system; or if the exhaust fumes can be detected inside the vehicle; or when the underside or rear of the vehicle is damaged; have an authorized technician inspect the complete ex- haust system and adjacent body areas for broken, dam- aged, deteriorated, or mispositioned parts. Open seams or loose connections could permit exhaust fumes to seep

MAINTAINING YOUR VEHICLE 269

into the passenger compartment. In addition, inspect the exhaust system each time the vehicle is raised for lubri- cation or oil change. Replace as required. Cooling System

WARNING!

You or others can be badly burned by hot coolant or steam from your radiator. If you see or hear steam coming from under the hood, don’t open the hood until the radiator has had time to cool. Never try to open a cooling system pressure cap when the radia- tor or coolant bottle is hot.

Coolant Checks Check coolant protection every 12 months (before the onset of freezing weather, where applicable). If coolant is

270 MAINTAINING YOUR VEHICLE

dirty or rusty in appearance, the system should be drained, flushed and refilled with fresh coolant. Check the front of the radiator for any accumulation of bugs, leaves, etc. Clean the radiator by gently spraying water from a garden hose at the back of the core. Check the engine cooling system hoses for condition and tightness of connection. Inspect the entire system for leaks. Any hoses that show cuts or severe abrasion must be replaced. Cooling System — Drain, Flush, And Refill At the intervals shown in the appropriate “Maintenance Schedule,” the system should be drained, flushed, and refilled. If the solution 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.

Engine Coolant Disposal Used ethylene glycol-based engine coolant is a regulated substance requiring proper disposal. Check with your local authorities to determine the disposal rules for your community. Do not store ethylene glycol-based engine coolant in open containers or allow it to remain in puddles on the ground. Prevent ingestion by animals and children. If ingested by a child, contact a physician immediately. Clean up any ground spills immediately. Selection Of Coolant Use only the manufacturer’s recommended coolant, refer to Recommended Fluids, Lubricants, and Genuine Parts for correct coolant type.

CAUTION!

† Mixing of coolants other than the specified HOAT coolant may result in decreased corrosion protec- tion and engine damage that may not be covered under the new vehicle warranty. If a non-HOAT coolant is introduced into the cooling system in an emergency, it should be replaced with the speci- fied coolant as soon as possible. † Do not use plain water alone or alcohol base antifreeze products. Do not use additional rust inhibitors or antirust products, as they may not be compatible with the radiator coolant and may plug the radiator. † This vehicle has not been designed for use with Propylene Glycol based coolants. Use of Propy- lene Glycol base coolants is not recommended.

MAINTAINING YOUR VEHICLE 271

Adding Coolant When adding coolant, a minimum solution of 50% rec- ommended HOAT ethylene glycol coolant in water should be used. Use higher concentrations (not to exceed 70%) if temperatures below -37°F (-38°C) 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. 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. NOTE: Mixing coolant types will decrease the life of the engine coolant and will require more frequent engine coolant changes.

272 MAINTAINING YOUR VEHICLE

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.

Coolant Level Check the coolant level at least once a month or more often in hot weather. Check the level when the engine is at normal operating temperature. Check the coolant level only in the coolant recovery bottle. The coolant level must be between the FULL and the ADD mark on the bottle.

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.

See your authorized dealer if the coolant level drops quickly. 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. † Do not overfill the coolant bottle. † Check coolant freeze point in the system.

MAINTAINING YOUR VEHICLE 273

† If 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. † Maintain coolant concentration at 50% ethylene glycol antifreeze (minimum) in water for proper corrosion protection of your engine that contains aluminum components. † Make sure that the radiator and coolant bottle hoses † 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.

are not kinked or obstructed.

274 MAINTAINING YOUR VEHICLE

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. Pay particular attention to the hoses nearest to high heat sources such as the exhaust manifold. Inspect hose rout- ing to be sure hoses do not touch any heat source or moving component that may cause heat damage or mechanical wear. Insure nylon tubing in these areas has not melted or collapsed. Inspect all hose connections such as clamps and couplings to make sure they are secure and no leaks are present. Components should be replaced immedi- ately if there is any evidence of degradation that could cause failure.

Brake System In order to assure brake system performance, all brake system components should be inspected periodically. Refer to the appropriate “Maintenance Schedule” in Section 8 for suggested service intervals.

WARNING!

Riding the brakes can lead to brake failure and possibly an accident. Driving with your foot resting or riding on the brake pedal can result in abnormally high brake temperatures, excessive lining wear, and possible brake damage. You wouldn’t have your full braking capacity in an emergency.

Brake and Power Steering System Hoses When servicing the vehicle for scheduled maintenance, inspect surface of hoses for evidence of heat and me- chanical damage. Hard and brittle rubber, cracking, tears,

cuts, abrasion, and excessive swelling suggest deteriora- tion of the rubber. Particular attention should be made to examining those hose surfaces nearest to high heat sources, such as the exhaust manifold. Inspect all hose clamps and couplings to make sure they are secure and no leaks are present. NOTE: Often fluids such as oil, power steering fluid, and brake fluid are used during assembly plant opera- tions to ease the assembly of hoses to couplings. There- fore, oil wetness at the hose-coupling area is not neces- sarily an indication of leakage. Actual dripping of hot fluid when systems are under pressure (during vehicle operation) should be noted before hose is replaced based on leakage.

MAINTAINING YOUR VEHICLE 275

Inspection of brake hoses should be done when- NOTE: ever the brake system is serviced and every engine oil change.

WARNING!

Worn brake hoses can burst and cause brake failure. You could have an accident. If you see any signs of cracking, scuffing, or worn spots, have the brake hoses replaced immediately.

276 MAINTAINING YOUR VEHICLE

Brake Master Cylinder The fluid level in the master cylinder should be checked when performing under hood services, or immediately if the brake system warning lamp shows system failure

Be sure to clean the top of the master cylinder area before removing the cap. If necessary, add fluid to bring the fluid level up to the requirements described on the brake

fluid reservoir. With disc brakes, fluid level can be expected to fall as the brake pads wear. However, low fluid level may be caused by a leak and a checkup may be needed. Use only manufacturer’s recommended brake fluid, refer to Recommended Fluids, Lubricants, and Genuine Parts for correct fluid type.

WARNING!

Use of a brake fluid that may have a lower initial boiling point or unidentified as to specification, may result in sudden brake failure during hard pro- longed braking. You could have an accident.

WARNING!

Overfilling the brake fluid reservoir can result in spilling brake fluid on hot engine parts and the brake fluid catching fire.

Use only brake fluid that has been in a tightly closed container to avoid contamination from foreign matter. Do not allow petroleum base fluid to contaminate the brake fluid as seal damage will result. Automatic Transmission

Selection of Lubricant It is important that the proper lubricant is used in the transmission to assure optimum transmission perfor- mance. Use only manufacturer’s recommended transmis- sion fluid, refer to Recommended Fluids, Lubricants, and

MAINTAINING YOUR VEHICLE 277

Genuine Parts for correct fluid type. It is important that the transmission fluid be maintained at the prescribed level using the recommended fluid.

CAUTION!

Using a transmission fluid other than the manufac- turer’s recommended fluid may cause deterioration in transmission shift quality and/or torque converter shudder. Using a transmission fluid other than the manufacturer’s recommended fluid will result in more frequent fluid and filter changes. Refer to Recommended Fluids, Lubricants, and Genuine Parts for correct fluid type.

Fluid Level Check – 4.0L Engines (42RE) This fluid level should be checked when the engine is fully warmed up and the fluid in the transmission is heated to its normal operating temperature. Operation of

278 MAINTAINING YOUR VEHICLE

the transmission with an improper fluid level will greatly reduce the life of the transmission and of the fluid. To check the automatic transmission fluid level properly, the following procedure must be used: 1. The vehicle must be on level ground. 2. The engine should be running at curb idle speed for a minimum of 60 seconds. 3. Fully apply parking brake. 4. Apply the brakes and shift the transmission into P (Park). 5. The fluid MUST be checked with the transmission in P (Park) to be sure that the fluid is accurate. 6. Wipe the dipstick clean and reinsert until seated. Remove dipstick and note reading.

At normal operating temperature (approximately 180° F (82° C), the fluid level is correct if it is in the HOT region (cross-hatched area) on the oil level indicator. The fluid level indicator should be in the COLD region at 70° F (21° C) fluid temperature. If the fluid level is low, add sufficient fluid to bring to the proper level. Refer to Recommended Fluids, Lubricants and Genuine Parts for correct fluid type. Fluid is added through the dipstick tube. NOTE: To prevent dirt and water from entering the transmission after checking or replenishing fluid, make certain that the dipstick cap is properly reseated. Fluid Level Check – 4.7L Engines (5–45RFE) Check the fluid level while the transmission is at normal operating temperature 180°F (82°C). This occurs after at

least 15 miles (25 km) of driving. At normal operating temperature the fluid cannot be held comfortably be- tween the fingertips. To check the automatic transmission fluid level properly, the following procedure must be used: 1. Operate the engine at idle speed and normal operating temperature. 2. The vehicle must be on level ground. 3. Fully apply the parking brake and press the brake pedal. 4. Place the gear selector momentarily in each gear position ending with the lever in P (Park). 5. Remove the dipstick, wipe it clean and reinsert it until seated. 6. Remove the dipstick again and note the fluid level on both sides. The fluid level should be between the “HOT”

MAINTAINING YOUR VEHICLE 279

(upper) reference holes on the dipstick at normal operat- ing temperature. Verify that solid coating of oil is seen on both sides of the dipstick. If the fluid is low, add as required into the dipstick tube. Do not overfill. After adding any quantity of oil through the oil fill tube, wait a minimum of two (2) minutes for the oil to fully drain into the transmission before rechecking the fluid level. If it is necessary to check the transmission below NOTE: the operating temperature, the fluid level should be between the two “COLD” (lower) holes on the dipstick with the fluid at approximately 70°F (21°C) (room tem- perature). If the fluid level is correctly established at room temperature, it should be between the “HOT” (upper) reference holes when the transmission reaches 180°F (82°C). Remember it is best to check the level at the normal operating temperature.

280 MAINTAINING YOUR VEHICLE

CAUTION!

Be aware that if the fluid temperature is below 50°F (10°C) it may not register on the dipstick. Do not add fluid until the temperature is elevated enough to produce an accurate reading.

7. Check for leaks. Release parking brake. To prevent dirt and water from entering the transmission after checking or replenishing fluid, make certain that the dipstick cap is properly reseated. It is normal for the dipstick cap to spring back slightly from its fully seated position, as long as its seal remains engaged in the dipstick tube.

Special Additives The manufacturer recommends against the addition of any additives to the transmission. Exception to this policy is the use of special dyes to aid in detecting fluid leaks. Transfer Case

Fluid Level Check Inspect the transfer case for fluid leaks. If a fluid leak is found, the transfer case fluid level can be checked by removing the filler plug located on the back side of the transfer case. The fluid level should be at the bottom edge of the filler plug hole when the vehicle is in a level position. Adding Fluid Add fluid at the filler hole until it runs out of the hole when the vehicle is in a level position.

Drain First remove fill plug, then remove drain plug. Recom- mended tightening torque for drain and fill plugs is 15–25 ft. lbs (20–34 N·m).

CAUTION!

When installing plugs, do not overtighten. You could damage them and cause them to leak.

Selection of Lubricant Use only manufacturer’s recommended fluid, refer to Recommended Fluids, Lubricants, and Genuine Parts for correct fluid type.

MAINTAINING YOUR VEHICLE 281

Front/Rear Axle Fluid

Fluid Level Check Lubricant should be 1/2” (1 cm) below the oil fill hole. Adding Fluid Add lubricant only at the fill hole and only to the level specified above. Selection of Lubricant Use only manufacturer’s recommended fluid, refer to Recommended Fluids, Lubricants, and Genuine Parts for correct fluid type. Appearance Care And Protection From Corrosion

Protection of Body and Paint from Corrosion Vehicle body care requirements vary according to geo- graphic locations and usage. Chemicals that make roads passable in snow and ice, and those that are sprayed on trees and road surfaces during other seasons, are highly corrosive to the metal in your vehicle.

282 MAINTAINING YOUR VEHICLE

The following maintenance recommendations will enable you to obtain maximum benefit from the corrosion resistance built into your vehicle. What Causes Corrosion? Corrosion is the result of deterioration or removal of paint and protective coatings from your vehicle. The most common causes are: † Road salt, dirt and moisture accumulation. † Stone and gravel impact. † Insects, tree sap and tar. † Salt in the air near seacoast localities. † Atmospheric fallout/industrial pollutants.

lated on your vehicle, wash it as soon as possible.

Washing † Wash your vehicle regularly. Always wash your ve- hicle in the shade using a mild car wash soap and rinse the panels completely with clear water. † If insects, tar or other similar deposits have accumu- † Use Mopart Auto Polish to remove road film and stains and to polish your vehicle. Take care never to scratch the paint. † Avoid using abrasive compounds and power buffing that may diminish the gloss or thin out the paint finish.

CAUTION!

Do not use abrasive or strong cleaning materials such as steel wool or scouring powder, which will scratch metal and painted surfaces.

Special Care † If you drive on salted or dusty roads or if you drive near the ocean, hose off the undercarriage at least once a month. † The drain holes in the lower edges of the doors, rocker panels, and rear liftgate must be kept clear and open. † If you detect any stone chips or scratches in the paint, touch them up immediately. The cost of such repairs is considered the responsibility of the owner. † If your vehicle is damaged due to an accident or similar cause which destroys the paint and protective

MAINTAINING YOUR VEHICLE 283

mud or stone shields behind each wheel.

coating, have your vehicle repaired as soon as pos- sible. The cost of such repairs is considered the respon- sibility of the owner. † If you carry special cargo such as chemicals, fertilizers, de-icer salt, etc., assure that such materials are well packaged and sealed. † If a lot of driving is done on gravel roads, consider † Use Mopart Touch-Up Paint on scratches as soon as possible. Your authorized dealer has touch-up paint to match the color of your vehicle. † Aluminum wheels should be cleaned regularly with mild soap and water to prevent corrosion. To remove heavy soil, select a nonabrasive, non-acidic cleaner. Do not use scouring pads or metal polishes. Avoid auto- matic car washes that use acidic solutions or harsh brushes that may damage the wheels’ protective finish.

284 MAINTAINING YOUR VEHICLE

Interior Care Use Mopart Fabric Cleaner to clean fabric upholstery and carpeting. Use Mopart Vinyl Cleaner to clean vinyl upholstery. Mopart Vinyl Cleaner is specifically recommended for interior vinyl trim. Do not use silicon based cleaning products on leather seats. They could cause cracking of the seat leather. Leather Seat Care & Cleaning Leather is best preserved by regular cleaning with a damp soft cloth. Small particles of dirt can act as an abrasive and damage the leather surface and should be removed promptly with a damp cloth. Stubborn soils can be removed easily with a soft cloth and Mopart Total

Clean. Care should be taken to avoid soaking the leather with any liquid. Please do not use polishes, oils, cleaning fluids, solvents, detergents, or ammonia based cleaners to clean the leather. Application of a leather conditioner is not required to maintain the original condition. Glass Surfaces All glass surfaces should be cleaned on a regular basis with any commercial household-type glass cleaner. Never use an abrasive type cleaner. Use caution when cleaning inside rear windows equipped with electric defrosters. Do not use scrapers or other sharp instru- ments which may scratch the elements. When cleaning the rear view mirror, spray cleaner on the towel or rag that you are using. Do not spray cleaner directly on the mirror.

WARNING!

Do not use volatile solvents for cleaning purposes. Many are potentially flammable, and if used in closed areas they may cause respiratory harm. Do not use gasoline, turpentine, kerosene, etc. for cleaning. Use the Mopart recommended products or the equivalents.

Carpet Vacuum your carpet regularly to prevent a soil build-up. Shampoo soiled carpet with a reliable upholstery cleaner, using a natural sponge or soft bristle brush. After carpet dries, vacuum it thoroughly. Seat Belt Maintenance Do not bleach, dye or clean the belts with chemical solvents or abrasive cleaners. This will weaken the fabric. Sun damage will also weaken the fabric.

MAINTAINING YOUR VEHICLE 285

If the belts need cleaning, use a mild soap solution or lukewarm water. Do not remove the belts from the vehicle to wash them. Replace the belts if they appear frayed or worn or if the buckles do not work properly. Maintenance After Off-Pavement Driving After extended operation in mud, sand or water, or similar dirty conditions, have your brake drums, brake linings, and axle joints inspected and cleaned as soon as possible. This will prevent any abrasive material from causing excessive wear or unpredictable braking action. Following off-pavement usage, completely inspect the underbody of your vehicle. Check tires, body structure, steering, suspension and exhaust system for damage. Check threaded fasteners for looseness, particularly on the chassis, drivetrain components, steering and suspen- sion. Retighten, if required, to torque values specified in the Service Manual. Also check for accumulations of

286 MAINTAINING YOUR VEHICLE

vegetation or brush that could become a fire hazard, or conceal damage to fuel lines, brake hoses, axle pinion seals, and propeller shafts.

CAUTION!

Under frequent heavy-duty driving conditions, change all lubricants and lubricate body compo- nents, all driveline joints and steering linkage more often than in normal service to prevent excessive wear.

FUSE PANEL

Interior Fuses The fuse panel is on the lower instrument panel just to the left of the steering column. A label is stamped on the fuse panel cover to identify each fuse for ease of replace- ment.

Description

Cavity Fuse Spare Spare 10 Amp Red 15 Amp Lt. Blue Flasher 25 Amp Natural Radio/Amplifier 15 Amp Lt. Blue Park Lights 10 Amp Red 15 Amp Lt. Blue Overhead Console, Rear

Interior Lights

Headlight High Beam Left

Wiper, IP Lights, Rear Flip- per Glass Solenoid

10
11

12

20 Amp Yellow Power Outlets 20 Amp Yellow Adjustable Pedals 10 Amp Red

Rear Window Defroster In- dicator Auto Shut Down Relay/ 9Fuel9

10 Amp Red

MAINTAINING YOUR VEHICLE 287

Description

Cavity Fuse Spare 13
14
10 Amp Red 10 Amp Red 15
10 Amp Red 16
17
10 Amp Red

Headlight Low Left Headlight Low Right Headlight High Right Instrument Cluster, Diag- nostic Connector Trailer Tow Antilock Brakes Ignition Run Ignition Run/Start - PDC Ignition Run/Start

30 Amp 10 Amp Red 10 Amp Red 10 Amp Red 10 Amp Red 15 Amp Lt. Blue Brake Switch 15 Amp Lt. Blue Fog Lamps 20 Amp Yellow Accessory Delay Relay

(Sunroof)

18
19
20
21
22
23
24
25

Description

Underhood Fuses (Power Distribution Center)

288 MAINTAINING YOUR VEHICLE

Cavity Fuse 26
27

15 Amp Lt. Blue Cigar 15 Amp Lt. Blue Rear Fog Lamps (If

10 Amp Red

10 Amp Red

Equipped) Body Control Module, Acc/ Run Rear Wiper Switch, Washer Motors 15 Amp Lt. Blue Radio 10 Amp Red 10 Amp Red 10 Amp Red 20 Amp 20 Amp

Ignition Start Ignition Run/Start- Airbag Ignition Run/Only - Airbag Wiper (Circuit Breaker) Seats (Circuit Breaker) Spare

28

29

30
31
32
33
C1
C2
C3

Your vehicle is equipped with an electrical power distri- bution center located in the engine compartment near the battery. This power center houses plug-in “Cartridge” fuses which replace in-line fusible links. The power center also contains “Mini” fuses and plug-in full and mini ISO relays. A label inside the latching cover of the

center identifies each component for ease of replacement, if necessary. “Cartridge” fuses and relays can be obtained from your authorized dealer.

insure adequate system lubrication to minimize the possibility of compressor damage when the system is started again.

MAINTAINING YOUR VEHICLE 289

Center labeled Ignition-Off Draw (IOD).

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 Cartridge fuse #15 in the Power Distribution † Store the removed IOD fuse in the Power Distribution † 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

Center location #11 labeled “IOD Storage.”

REPLACEMENT BULBS

Interior Lights Bulb Type A/C Heater . . . . . . . . . . . . . . . . . . . . Not Serviceable Ashtray Receiver Light . . . . . . . . . . . . . . . . . . . . 161
Climate Control (Dual Zone Automatic) . . . . . . . . . . . . Not Serviceable Climate Control (Manual A/C). . . . . . . . . . . . . . . . 74
Front Reading . . . . . . . . . . . . . . . . . . . . . . . . . . . 192
Glove Box Light . . . . . . . . . . . . . . . . . . . . . . . . . 194
Overhead Console . . . . . . . . . . . . . . . . . . . . . . . . 192
Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ASC Rear Cargo Light . . . . . . . . . . . . . . . . . . . . . . . 214–2
Passenger Assist Handle Lights . . . . . . . . . . . . . 214–2
Lighted Vanity Mirror *. . . . . . . . . . . . . . P/N 6501966

290 MAINTAINING YOUR VEHICLE

Interior Lights Bulb Type Underpanel Courtesy Lights. . . . . . . . . . . . . . . . . 906
Instrument Cluster (General Illumination) . . . . . . . 103
Telltale/Hazard Light . . . . . . . . . . . . . . . . . . . . . . 74
* Available only from authorized dealers.

Bulb Type Exterior Lights Backup Lights . . . . . . . . . . . . . . . . . . . . . . . . . 3157A Center High-Mounted Stoplight . . . . . . . . . . . . . . 921
Fog Lights. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9145
Front Park Lights (Limited) . . . . . . . . . . . . . . . 194NA Front Park Lights (Laredo). . . . . . . . . . . . . . . . 194NA Front Park/Turn Light (Limited) . . . . . . . . . . . . 3157A

Exterior Lights Bulb Type Front Park/Turn Light (Laredo) . . . . . . . . . . . . 3157A Front Side Marker (Limited) . . . . . . . . . . . . . . 194NA Front Side Marker (Laredo) . . . . . . . . . . . . . . . 194NA Headlights (Low Beam) . . . . . . . . . . . . . . . . . 9006XS Headlights (High Beam) . . . . . . . . . . . . . . . . . 9005XS Rear License Plate Light. . . . . . . . . . . . . . . . . . . . 168
Rear Stop/Tail Lights. . . . . . . . . . . . . . . . . . . . 3157A Rear Turn Signal Lights (2) . . . . . . . . . . . . . . . . 3157A NOTE: Numbers refer to commercial bulb types that can be purchased from your authorized dealer. If a bulb needs to be replaced, visit your authorized dealer or refer to the applicable Service Manual.

FLUID CAPACITIES

Fuel (Approximate) Engine Oil with Filter

4.0 Liter Engine (SAE 10W-30, API Certified Engine Oil)

4.7, 4.7HO Liter Engine (SAE 5W-30, API Certified Engine Oil) Cooling System *

4.0 Liter Engine (Mopart Antifreeze/Coolant 5 Year/100,000

Mile Formula)

4.7 & 4.7HO Liter Engine (Mopart Antifreeze/Coolant 5 Year/

100,000 Mile Formula)

* Includes heater and coolant recovery bottle filled to MAX level.

MAINTAINING YOUR VEHICLE 291

U.S.

20 Gallons

6 Qts 6 Qts

15 Qts

14.5 Qts

Metric 76 Liters

5.7 Liters 5.7 Liters

14.1 Liters

13.7 Liters

292 MAINTAINING YOUR VEHICLE

RECOMMENDED FLUIDS, LUBRICANTS AND GENUINE PARTS Engine Component Engine Coolant

Engine Oil

Oil Filter (All Engines) Spark Plugs

Fuel Selection

Fluid, Lubricant, or Genuine Part Mopart Antifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid Or- ganic Additive Technology) API Certified SAE 10W-30 Engine Oil is recommended for the 4.0L engine. API Certified SAE 5W-30 Engine Oil is recommended for the 4.7L/4.7LHO engine. Refer to oil viscosity chart for correct SAE grade meeting DaimlerChrysler Material Standard MS-6395. Mopart Oil Filter (P/N 05281090) Refer to the Vehicle Emission Control Information label in the engine com- partment. 87 Octane (91 Octane is recommended but not required for the 4.7LHO)

Chassis Component Automatic Transmission Transfer Case

Axle Differential (front-rear)

Brake Master Cylinder

Power Steering Reservoir Ball Joints, Prop Shafts, U-Joints, Yokes, & Wheel Bearings

MAINTAINING YOUR VEHICLE 293

Fluid, Lubricant, or Genuine Part Mopart ATF+4 Automatic Transmission Fluid Selec-Trac Models - Mopart ATF+4 Automatic Transmission Fluid. Quadra-Trac Models - Mopart Transfer Case Fluid (P/N 05016796) Mopart Synthetic Gear Lubricant or equivalent of SAE 75W-140 (API-GL5) if equipped with a Vari-Lokt front axle. Mopart Gear Lubricant or equivalent of SAE 80W-90 (API-GL5) if not equipped with a Vari-Lokt front axle. Mopart Synthetic Gear Lubricant or equivalent of SAE 75W-140 (API-GL5) if equipped with a Dana M35 or M44 Vari-Lokt rear axle. Mopart Gear Lubricant or equivalent of SAE 80W-90 (API-GL5) if equipped with a Dana M44 rear axle without Vari-Lokt. For trailer towing applications, use a SAE 75W-140 Syn- thetic Gear Lubricant in rear axle. Vari-Lokt equipped axles require a friction modifier additive. Mopart DOT 3, SAE J1703 should be used. If DOT 3, SAE J1703 brake fluid is not available, then DOT 4 is acceptable. Use only recommended brake fluids. Mopart Power Steering Fluid (MS-5931) Mopart Multi-Purpose Lube NLGI Grade 2 EP, GC-LB

MAINTENANCE SCHEDULES

CONTENTS

m Emission Control System Maintenance . . . . . . . . 296
m Maintenance Schedules . . . . . . . . . . . . . . . . . . . 296

N Schedule “B” . . . . . . . . . . . . . . . . . . . . . . . . 299
N Schedule “A” . . . . . . . . . . . . . . . . . . . . . . . . 310

M

296 MAINTENANCE SCHEDULES

EMISSION CONTROL SYSTEM MAINTENANCE The “Scheduled” maintenance services, listed in bold type must be done at the times or mileages specified to assure the continued proper functioning of the emission control system. These, and all other maintenance services included in this manual, should be done to provide best vehicle performance and reliability. More frequent main- tenance may be needed for vehicles in severe operating conditions such as dusty areas and very short trip driving. Inspection and service also should be done any time a malfunction is suspected. NOTE: Maintenance, replacement, or repair of the emis- sion control devices and systems on your vehicle may be performed by any automotive repair establishment or individual using any automotive part which has been certified pursuant to U.S. EPA or, in the State of Califor- nia, California Air Resources Board regulations.

MAINTENANCE SCHEDULES There are two maintenance schedules that show the required service for your vehicle. First is Schedule (B(. It is for vehicles that are operated under the conditions that are listed below and at the beginning of the schedule. † Day or night temperatures are below 32°F (0°C) † Stop and go driving † Excessive engine idling † Driving in dusty conditions † Short trips of less than 10 miles (16.2 km) † More than 50% of your driving is at sustained high † Trailer towing

speeds during hot weather, above 90°F (32°C)

† Taxi, police, or delivery service (commercial service) † Off-road or desert driving † If equipped for and operated with E-85 (ethanol)

fuel.

NOTE: Most vehicles are operated under the conditions listed for Schedule “B.” If ANY of these apply to you, change your NOTE: engine oil every 3,000 miles (5 000 km) or 3 months, whichever comes first, and follow the maintenance rec- ommendations in “Maintenance Schedule B.” Second is Schedule “A”. It is for vehicles that are not operated under any of the conditions listed under Sched- ule “B.” Use the schedule that best describes your driving condi- tions. Where time and mileage are listed, follow the interval that occurs first.

MAINTENANCE SCHEDULES 297

CAUTION!

Failure to perform the required maintenance items may result in damage to the vehicle.

At Each Stop for Fuel † 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. † Check the windshield washer solvent, add as required.

298 MAINTENANCE SCHEDULES

damage.

Once a Month † Check the tire pressure and look for unusual wear or † Inspect the battery and clean and tighten the terminals † Check the fluid levels of the coolant reservoir, brake master cylinder, and transmission, and add as needed. † Check all lights and all other electrical items for correct

as required.

operation.

At Each Oil Change † Change the engine oil filter. † Inspect the exhaust system. † Inspect brake hoses. † Check the coolant level, hoses, and clamps. † Rotate the tires at each oil change interval shown on Schedule “A” 6,000 miles (10 000 km) or every other interval shown on Schedule “B” 6,000 miles (10 000
km). † After completion of off-road operation, the underside of the vehicle should be thoroughly inspected. Exam- ine threaded fasteners for looseness.

Schedule “B” Follow this schedule if you usually operate your vehicle under one or more of the following conditions. † Day or night temperatures are below 32°F (0°C) † Stop and go driving † Excessive engine idling † Driving in dusty conditions † Short trips of less than 10 miles (16.2 km) † More than 50% of your driving is at sustained high

speeds during hot weather, above 90°F (32°C)

SCHEDULE “B” 299

† Trailer towing † Taxi, police, or delivery service (commercial service) † Off-road or desert driving † If equipped for and operated with E-85 (ethanol)

fuel.

If ANY of these apply to you, change your NOTE: engine oil every 3,000 miles (5 000 km) or 3 months, whichever comes first, and follow the maintenance rec- ommendations in “Maintenance Schedule B.”

300 SCHEDULE “B”

Miles (Kilometers) Change the engine oil and engine oil filter. Inspect the engine air cleaner filter, replace if nec- essary. Lubricate the upper knuckle ball stud at steering & suspension ball joints. Drain and refill the front and rear axles. Inspect the brake linings. Clean and lubricate the brake caliper pins.

3,000
(5 000)

9,000
(14 000)

6,000
(10 000)

12,000
(19 000)

15,000
(24 000)

SCHEDULE “B” 301

Miles (Kilometers) Change the engine oil and engine oil filter. Inspect the engine air cleaner filter, replace if nec- essary. Inspect the PCV Valve, replace if necessary.L Replace the spark plugs. Lubricate the upper knuckle ball stud at steering & suspension ball joints. Drain and refill the front and rear axles. Inspect the brake linings. Clean and lubricate the brake caliper pins. Drain and refill the automatic transmission fluid, and change filter (4.0L Only). Drain and refill the automatic transmission fluid, and replace main sump filter (4.7L Only). Drain the transfer case and refill (Quadra-Trac Models Only).

21,000
(34 000)

18,000
(29 000)

27,000
(43 000)

24,000
(38 000)

30,000
(48 000)

302 SCHEDULE “B”

Miles (Kilometers) Change the engine oil and engine oil filter. Inspect the engine air cleaner filter, replace if nec- essary. Drain and refill the front and rear axles. Inspect the brake linings. Lubricate the upper knuckle ball stud at steering & suspension ball joints. Clean and lubricate the brake caliper pins. Inspect and replace drive belt, if necessary (4.0L Only).

33,000
(53 000)

39,000
(62 000)

36,000
(58 000)

42,000
(67 000)

45,000
(72 000)

51,000
(82 000)

48,000
(77 000)

Miles (Kilometers) Change the engine oil and engine oil filter. Inspect the engine air cleaner filter, replace if necessary. Inspect the PCV Valve, replace if necessary.L Replace the spark plugs. Lubricate the upper knuckle ball stud at steering & sus- pension ball joints. Clean and lubricate brake caliper pins. Inspect the brake linings. Drain and refill the front and rear axles. Drain and refill the automatic transmission fluid, and change filter (4.0L Only). Drain and refill the automatic transmission fluid, and replace main sump filter (4.7L Only). Inspect the drive belt and replace as needed. Not re- quired if belt was previously replaced (4.0L Only). Drain and refill the transfer case fluid (Selec-Trac and Quadra-Trac Models).

SCHEDULE “B” 303

54,000
(86 000)

57,000
(91 000)

60,000
(96 000)

M

304 SCHEDULE “B”

Miles (Kilometers) Change the engine oil and engine oil filter. Inspect the engine air cleaner filter, replace if nec- essary. Lubricate the upper knuckle ball stud at steering & suspension ball joints. Inspect the brake linings. Clean and lubricate the brake caliper pins. Drain and refill the front and rear axle fluid. Inspect the drive belt and replace as needed. Not required if belt was previously replaced (4.0L Only). Inspect the drive belt and replace as needed (4.7L Only).

63,000
(101 000)

66,000
(106 000)

69,000
(110 000)

72,000
(115 000)

75,000
(120 000)

Miles (Kilometers) Change the engine oil and engine oil filter. Inspect the engine air cleaner filter, replace if nec- essary. Inspect the PCV Valve, replace if necessary.L Replace the spark plugs. Lubricate the upper knuckle ball stud at steering & suspension ball joints. Drain and refill the transfer case fluid (Quadra-Trac Models Only). Inspect the brake linings. Clean and lubricate the brake caliper pins. Drain and refill the front and rear axle fluid. Drain and refill the automatic transmission fluid, and change filter (4.0L Only).

78,000
(125 000)

81,000
(130 000)

84,000
(134 000)

87,000
(139 000)

90,000
(144 000)

SCHEDULE “B” 305

306 SCHEDULE “B”

Miles (Kilometers) Drain and refill the automatic transmission fluid,