2006 Jeep Grand Cherokee Owners Manual

This is due to the cold, thick fluid in the steering system. This noise should be considered normal, and does not in any way damage the steering system.

362 MAINTAINING YOUR VEHICLE

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 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 Mopar威 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 driver side), and should be checked for fluid level at regular intervals. Fill the reservoir with windshield washer (not antifreeze/coolant) and operate the system for a few seconds to flush out the residual water.

solvent

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.

MAINTAINING YOUR VEHICLE 363

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 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.

364 MAINTAINING YOUR VEHICLE

Cooling System

WARNING!

You or others can be badly burned by hot antifreeze/ 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 radiator or coolant bottle is hot.

Engine Coolant Checks Check antifreeze/coolant protection every 12 months (before the onset of freezing weather, where applicable). If antifreeze/coolant is dirty or rusty in appearance, the system should be drained, flushed and refilled with fresh antifreeze/coolant. Check the front of the A/C condenser

for any accumulation of bugs, leaves, etc. If dirty, clean by gently spraying water from a garden hose vertically down the face of the condenser. 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. With the engine at normal operating temperature (but not running), check the cooling system pressure cap for proper vacuum sealing by draining a small amount of coolant from the radiator drain cock. If the cap is sealing properly, the antifreeze/coolant will begin to drain from the coolant recovery bottle. DO NOT REMOVE THE COOLANT PRESSURE CAP WHEN THE COOLING SYSTEM IS HOT.

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. Properly dispose of old antifreeze/coolant solution. Selection Of Engine Coolant Use only the manufacturer’s recommended antifreeze/ coolant, refer to Fluids, Lubricants, and Genuine Parts for correct antifreeze/coolant type.

MAINTAINING YOUR VEHICLE 365

CAUTION!

Mixing of antifreeze/coolant other than the specified HOAT antifreeze/coolant may result in decreased corrosion protection and engine damage. If a non- HOAT antifreeze/coolant is introduced into the cool- ing system in an emergency, it should be replaced with the specified antifreeze/coolant as soon as pos- sible. Do not use plain water alone or alcohol base antifreeze/coolant products. Do not use additional rust inhibitors or antirust products, as they may not be compatible with the antifreeze/coolant and may plug the radiator. This vehicle has not been designed for use with Propylene Glycol based antifreeze/coolant. Use of Propylene Glycol base antifreeze/coolant is not rec- ommended.

366 MAINTAINING YOUR VEHICLE

Adding Engine Coolant Your vehicle has been built with an improved antifreeze/ coolant that allows extended maintenance intervals. This antifreeze/coolant can be used up to 5 Years or 100,000
miles before replacement. To prevent reducing this ex- tended maintenance period, it is important that you use the same antifreeze/coolant throughout the life of your vehicle. Please review these recommendations for using Hybrid Organic Additive (HOAT) antifreeze/coolant. When adding antifreeze/coolant, a minimum solution of 50% recommended Mopar威 Antifreeze/ Coolant 5 Year/ 100,000 Mile Formula HOAT (Hybrid Organic Additive Technology), or equivalent, in water should be used. Use higher concentrations (not to exceed 70%) if temperatures below -34°F (-37°C) are anticipated.

Technology

Use only high purity water such as distilled or deionized water when mixing the water/antifreeze (coolant) solu- tion. 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 antifreeze/coolant types will decrease the life of the antifreeze/coolant and will require more frequent antifreeze/coolant changes. Cooling System Pressure Cap The cap must be fully tightened to prevent loss of antifreeze/coolant, and to insure that antifreeze/coolant will return to the radiator from the coolant recovery tank.

The cap should be inspected and cleaned if there is any accumulation of foreign material on the sealing surfaces.

WARNING!

The warning words DO NOT OPEN HOT on the cooling system pressure cap are a safety precaution. Never add antifreeze/coolant when the engine is overheated. Do not loosen or remove the cap to cool an overheated engine. Heat causes pressure to build up in the cooling system. To prevent scalding or injury, do not remove the pressure cap while the system is hot or under pressure.

Disposal of Used Engine Coolant Used ethylene glycol-based antifreeze/coolant is a regu- lated substance requiring proper disposal. Check with your local authorities to determine the disposal rules for your community. To prevent ingestion by animals and

MAINTAINING YOUR VEHICLE 367

children, do not store ethylene glycol-based antifreeze/ coolant in open containers or allow it to remain in puddles on the ground. If ingested by a child, contact a physician immediately. Clean up any ground spills im- mediately. Engine Coolant Level The coolant bottle provides a quick visual method for determining that the antifreeze/coolant level is adequate. With the engine idling, and warm to normal operating temperature, the level of the antifreeze/coolant in the bottle should be between the ranges indicated on the bottle. The radiator normally remains completely full, so there is not need to remove the radiator cap unless checking for antifreeze/coolant freeze point or replacing antifreeze/ 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.

368 MAINTAINING YOUR VEHICLE

When additional antifreeze/coolant is needed to main- tain the proper level, it should be added to the coolant bottle. Do not overfill. Points To Remember NOTE: When the vehicle is stopped after a few miles (kilometers) of operation, you may observe vapor coming from the front of the engine compartment. This is nor- mally a result of moisture from rain, snow, or high humidity accumulating on the radiator and being vapor- ized when the thermostat opens, allowing hot antifreeze/ 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 recovery bottle. • Check antifreeze/coolant freeze point in the radiator and in the coolant recovery bottle. If antifreeze/

coolant needs to be added, contents of coolant recov- ery bottle must also be protected against freezing. • If frequent antifreeze/coolant additions are required, or if the level in the coolant recovery bottle does not drop when the engine cools, the cooling system should be pressure tested for leaks. • Maintain antifreeze/coolant concentration at 50% HOAT antifreeze/coolant (minimum) and distilled water for proper corrosion protection of your engine which contains aluminum components. • Make sure that the radiator and coolant recovery • Keep the front of the radiator clean. If your vehicle is equipped with air conditioning, keep the front of the condenser clean, also. • Do not change the thermostat for summer or winter install

operation. If replacement is ever necessary,

bottle hoses are not kinked or obstructed.

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. 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

MAINTAINING YOUR VEHICLE 369

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.

370 MAINTAINING YOUR VEHICLE

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.

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.

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 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.

MAINTAINING YOUR VEHICLE 371

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

372 MAINTAINING YOUR VEHICLE

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 Fluids, Lubricants, and Genuine Parts for correct fluid type.

Fluid Level Check

If equipped with a dipstick, use the following NOTE: procedure. If your vehicle has a capped dipstick tube, it is sealed and should not be tampered with. Your autho- rized dealer has the proper tools to ensure that the fluid level is set properly.

Check the fluid level while the transmission is at normal operating temperature. This occurs after at least 15 miles (25 km) of driving. At normal operating temperature the fluid cannot be held comfortably between 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” (upper) reference holes on the dipstick at normal operat- ing temperature. The fluid level is only valid if there is a 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.

MAINTAINING YOUR VEHICLE 373

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.

374 MAINTAINING YOUR VEHICLE

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 Fluids, Lubricants, and Genuine Parts for correct fluid type.

Front/Rear Axle Fluid

Front Axle Fluid Level Check Lubricant should be to the bottom of the oil fill hole. Rear Axle 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 Fluids, Lubricants, and Genuine Parts for correct fluid type.

MAINTAINING YOUR VEHICLE 375

Maintenance After Off-Pavement Driving After extended operation in mud, sand or water, or similar dirty conditions, have your brake discs, 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 vegetation or brush that could become a fire hazard, or conceal damage to fuel lines, brake hoses, axle pinion seals, and propeller shafts.

376 MAINTAINING YOUR VEHICLE

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.

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. 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. Washing • Wash your vehicle regularly. Always wash your ve- hicle in the shade using Mopar威 Car Wash or a mild car wash soap, and rinse the panels completely with clear water.

• If insects, tar, or other similar deposits have accumu- lated on your vehicle, use Mopar威 Super Kleen Bug and Tar Remover to remove. • Use Mopar威 Cleaner Wax to remove road film, stains, and to protect your paint finish. 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.

MAINTAINING YOUR VEHICLE 377

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. • It is important that the drain holes in the lower edges of the doors, rocker panels and tailgate 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 coating have your vehicle repaired as soon as possible. The cost of such repairs is considered the responsibil- ity of the owner.

378 MAINTAINING YOUR VEHICLE

• Aluminum wheels should be cleaned regularly with a mild soap and water to prevent corrosion. To remove heavy soil, use Mopar威 Wheel Cleaner or select a nonabrasive, non-acidic cleaner. Do not use scouring pads, steel wool, a bristle brush or metal polishes. Only Mopar威 cleaners are recommended. Do not use oven cleaner. Avoid automatic car washes that use acidic solutions or harsh brushes that may damage the wheels’ protective finish. • 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 Mopar威 Touch Up Paint on scratches or chips as soon as possible. Your authorized dealer has touch up paint to match the color of your vehicle.

mud or stone shields behind each wheel.

Interior Care Use Mopar威 Total Clean to clean fabric upholstery and carpeting. Interior Trim should be cleaned starting with a damp cloth, a damp cloth with Mopar威 Total Clean, then Mopar威 Spot & Stain Remover if absolutely necessary. Do not use harsh cleaners or Armorall. Use Mopar威 Total Clean to clean vinyl upholstery. Leather Seat Care & Cleaning Mopar威 Total Clean is specifically recommended for leather upholstery. Your leather upholstery can be best preserved by regular cleaning with a damp soft cloth. Small particles of dirt can act as an abrasive and damage the leather upholstery and should be removed promptly with a damp cloth. Stubborn soils can be removed easily with a soft cloth and Mopar威 Total Clean. Care should be taken to avoid soaking your leather upholstery with any liquid. Please

do not use polishes, oils, cleaning fluids, solvents, deter- gents, or ammonia based cleaners to clean your leather upholstery. Application of a leather conditioner is not required to maintain the original condition.

WARNING!

Do not use volatile solvents for cleaning purposes. Many are potentially flammable, and if used in closed areas they may cause respiratory harm.

Glass Surfaces All glass surfaces should be cleaned on a regular basis with Mopar威 Glass Cleaner or 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 instruments which may scratch the elements.

MAINTAINING YOUR VEHICLE 379

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. Cleaning Plastic Instrument Cluster Lenses The lenses in front of the instruments in this vehicle are molded in clear plastic. When cleaning the lenses, care must be taken to avoid scratching the plastic. 1. Clean with a wet soft rag. A mild soap solution may be used, but do not use high alcohol content or abrasive cleaners. If soap is used, wipe clean with a clean damp rag. 2. Dry with a soft tissue.

380 MAINTAINING YOUR VEHICLE

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. If the belts need cleaning, use Mopar威 Total Clean, 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.

FUSE PANEL

Interior Fuses The fuse panel is on the lower instrument panel just to the left of the steering column.

Fuse Panel Location

Description

Cavity Fuse/Color 10
11
12

30 Amp Green Audio Amp (B+) Sunroof (B+) 15 Amp Blue 10 Amp Red Htd Mirror (EBL) 20 Amp Yellow Rr Pwr Out (B+) Rr HVAC (R/O) 10 Amp Red 10 Amp Red OCM (B+) 20 Amp Yellow Door Locks (B+) 15 Amp Blue 20 Amp Yellow Pwr Outlet (B+) 10 Amp Red Spare 10 Amp Red

Steer Col Lock (B+)

Ign Run Only Out (R/O)

Mem. Sw, Courtesy Lamp (B+)

13
14
15

Spare 20 Amp Yellow Cigar Ltr (R/A) 10 Amp Red

Tire Press Mon (R/O)

Cavity Fuse/Color 10 Amp Red 16
17
15 Amp Blue 10 Amp Red 19
10 Amp Red 20
15 Amp Blue 21
22
15 Amp Blue 10 Amp Red 24
25
10 Amp Red

CB1
CB2
CB3

20 Amp 20 Amp 20 Amp

MAINTAINING YOUR VEHICLE 381

Description SCM, Cluster OBD (B+) Flipper Glass (B+) OCM (R/S) WCM, Cluster (R/S) Autowipe (Accy Delay) Rear Wiper (B+) PDC, FCM, A580 (R/S) ABS, Trans. Case Switch (R/S) Cycle -Wipers (B+) Non - Cycle Seats (B+) Non - Cycle Windows (De- lay)

382 MAINTAINING YOUR VEHICLE

Underhood Fuses (Power Distribution Center)

Power Distribution Center

Description

Cavity Fuse/Color

40 Amp Green HVAC Blower Power Outlets 30 Amp Pink 30 Amp Pink Rr Wiper/Ign R/O

Description ABS Pump Cabin Htr 1 (Diesel Only) ASD Rr HVAC (XK)

Cavity Fuse/Color 10
11
12
13
14
15
16

30 Amp Pink 50 Amp Red 50 Amp Red 30 Amp Pink 40 Amp Green Acc Delay/Seats Spare 40 Amp Green 30 Amp Pink 40 Amp Green EBL/Htd Mirror 40 Amp Green 50 Amp Red 50 Amp Red 25 Amp Natu- ral Spare 20 Amp Yellow TCM/AC Clutch

Starter/JB Power Cig Ltr/T-Tow

17
18

JB Power Cabin Htr 2 (Diesel Only) Cabin Htr 3 (Diesel Only) IPM/Coils

ABS Valves

Description

Cavity Fuse/Color 19
20
21
22
23
24
25
26
27
28

20 Amp Yellow Ign Sw 20 Amp Yellow PCM Batt (Gasoline Only) 30 Amp Pink Spare 20 Amp Yellow FDCM 20 Amp Yellow Fuel Pump 20 Amp Yellow FDCM/E-Diff. 15 Amp Blue 15 Amp Blue 25 Amp Natu- ral Spare Spare Mini Relay

Hyd/PCM (Diesel Only) Brake/Stop Lamps NGC/Injectors

Cabin Htr 1 Rly (Diesel Only) TCM Rly (Gasoline Only)

Micro Relay

29
30
31

32

MAINTAINING YOUR VEHICLE 383

Cavity Fuse/Color Micro Relay 33
34
Micro Relay Micro Relay 35
36
Mini Relay

38

39
40

Mini Relay

Mini Relay Mini Relay

Description Starter Rly AC Clutch Rly Fuel Pump Rly Cabin Htr 3 Rly (Diesel Only) Cabin Htr 2 Rly (Diesel Only) HVAC Blower Rly ASD Rly

384 MAINTAINING YOUR VEHICLE

Underhood Fuses (Integrated Power Module)

Integrated Power Module

Cavity Fuse/Color Micro Relay Micro Relay Micro Relay

Description Wiper On/Off Rly Wiper Hi/Lo Rly Horn Rly

Description Rear Fog Rly (BUX Only) Lt T-Tow Stop/Turn Rly Rt T-Tow Stop/Turn Rly Park Lamps Rly Lt Park Lamps T-Tow Park Lamps Rt Park Lamps Rad Fan Hi Rly

Cavity Fuse/Color Micro Relay Micro Relay Micro Relay Micro Relay 10 Amp Red 10 Amp Red 10 Amp Red 10
Mini Relay 11
20 Amp Yellow FCM Batt #4
12
13
20 Amp Yellow FCM Batt #2
20 Amp Yellow Adjustable Pedal 14
20 Amp Yellow Ft Fog Lamps 15
20 Amp Yellow Horn 16
17
20 Amp Yellow Rear Fogs 20 Amp Yellow FCM Batt #1
18
19
20 Amp Yellow Lt T-Tow Stop/Turn

Cavity Fuse/Color 20
21
22
23
24
25
26
27
28
29
30

Description 20 Amp Yellow FCM Batt #3
20 Amp Yellow Rt T-Tow Stop/Turn 30 Amp Pink 50 Amp Red Mini Relay Micro Relay Micro Relay 15 Amp Blue 20 Amp Yellow IOD #2 (Audio) 10 Amp Red ORC (Ign R/.S) ORC (Ign R/O) 10 Amp Red

FDCM Mod Rad Fan Rad Fan Lo Rly Ft Fog Lamps Rly Adjustable Pedal Rly IOD #1

MAINTAINING YOUR VEHICLE 385

labeled Ignition-Off Draw (IOD#1).

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 fuse #27 in the Intelligent Power Module • 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 insure adequate system lubrication to minimize the possibility of compressor damage when the system is started again.

386 MAINTAINING YOUR VEHICLE

REPLACEMENT BULBS

Interior Lights Bulb Type Glove Box Light . . . . . . . . . . . . . . . . . . . . . . . . . 194
Grab Handle Light . . . . . . . . . . . . . . . . L002825W5W Overhead Console Reading Lights . . . . . . . . . . VT4976
Rear Cargo Light . . . . . . . . . . . . . . . . . . . . . . . 214–2
Visor Vanity Light . . . . . . . . . . . . . . . . . . . . . V26377
Underpanel Courtesy Lights. . . . . . . . . . . . . . . . . 906
Instrument Cluster (General Illumination) . . . . . . . 103
Telltale/Hazard Light . . . . . . . . . . . . . . . . . . . . . . 74
* Available only from authorized dealers.

Exterior Lights Bulb Type Backup Lights . . . . . . . . . . . . . . . . . . . . . . . . . 3157K Front Fog Lights . . . . . . . . . . . . . . . . . . . . . . . . 9145
Front Park/Turn Light . . . . . . . . . . . . . . . . . . . 3157K Front Side Marker . . . . . . . . . . . . . . . . . . . . . . . 2825
Headlights (Low Beam) . . . . . . . . . . . . . . . . . . . 9006
Headlights (High Beam) . . . . . . . . . . . . . . . . . . . 9005
Rear License Plate Light. . . . . . . . . . . . . . . . . . . . 168
Rear Stop/Tail Lights . . . . . . . . . . . . . . . . . . . . 3157K Rear Turn/Tail Lights (2) . . . . . . . . . . . . . . . . . . 3157
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.

BULB REPLACEMENT

Head Light

1. Open the hood. 2. Remove the headlamp cover.

MAINTAINING YOUR VEHICLE 387

3. Turn the low or high beam bulb 1/4 turn counter clockwise to remove from housing.

4. Disconnect the electrical connector and replace the bulb.

388 MAINTAINING YOUR VEHICLE

CAUTION!

Do not touch the new bulb with your fingers. Oil contamination will severely shorten bulb life. If the bulb comes in contact with any oily surface, clean the bulb with rubbing alcohol.

Front Turn Signal

1. Open the hood. 2. Remove the headlamp cover.

3. Turn the turn signal bulb 1/4 turn counter clockwise to remove from housing.

MAINTAINING YOUR VEHICLE 389

CAUTION!

Do not touch the new bulb with your fingers. Oil contamination will severely shorten bulb life. If the bulb comes in contact with any oily surface, clean the bulb with rubbing alcohol.

Front Fog Light

1. Reach behind the front fascia from under the vehicle. 2. Turn the front fog light bulb 1/4 turn counter clock- wise to remove from housing. 3. Disconnect the electrical connector and replace bulb.

4. Disconnect the electrical connector and replace the bulb.

390 MAINTAINING YOUR VEHICLE

CAUTION!

Do not touch the new bulb with your fingers. Oil contamination will severely shorten bulb life. If the bulb comes in contact with any oily surface, clean the bulb with rubbing alcohol.

Rear Tail, Stop, Turn Signal, and Back-Up Lights

1. Raise the liftgate. 2. Remove the two Torx fasteners.

3. Squeeze the socket assembly tabs to remove it from the housing.

MAINTAINING YOUR VEHICLE 391

Center High Mounted Stop Light (CHMSL) 1. Remove the two screws securing the CHMSL.

4. Pull the bulb to remove it from the socket. 5. Replace the bulb, reinstall the socket, and reattach the light assembly.

2. Twist the bulb socket to remove from the CHMSL housing. 3. Pull the bulb out of the socket. 4. Replace the bulb, reinstall the socket and reattach the CHMSL.

392 MAINTAINING YOUR VEHICLE

FLUID CAPACITIES

Fuel (Approximate) Engine Oil with Filter 3.7 Liter Engine (5W-30, API Certified) 4.7 Liter Engine (5W-30, API Certified) 5.7 Liter Engine (5W-20, API Certified) Cooling System * 3.7 Liter Engine (Mopar威 Engine Coolant/Antifreeze 5 Year/ 100,000 Mile Formula) 4.7 Liter Engine (Mopar威 Engine Coolant/Antifreeze 5 Year/ 100,000 Mile Formula) 5.7 Liter Engine (Mopar威 Engine Coolant/Antifreeze 5 Year/ 100,000 Mile Formula) * Includes heater and coolant recovery bottle filled to MAX level.

U.S.

20.6 Gallons

5 Qts 6 Qts 7 Qts

9 Qts

14.5 Qts

14.5 Qts

Metric 78 Liters

4.7 Liters 5.7 Liters 6.6 Liters

10 Liters

13.7 Liters

13.7 Liters

MAINTAINING YOUR VEHICLE 393

FLUIDS, LUBRICANTS, AND GENUINE PARTS Engine Component Engine Coolant

Engine Oil (3.7L/4.7L Engines)

Engine Oil (5.7L Engines)

Oil Filter (All Engines) Spark Plugs

Fuel Selection (3.7L and 4.7L En- gines) Fuel Selection (5.7L Engines)

Fluid, Lubricant, or Genuine Part Mopar威 Antifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid Or- ganic Additive Technology) Use API Certified SAE 5W-30 Engine Oil, meeting the requirements of DaimlerChrysler Material Standard MS-6395. Use API Certified SAE 5W-20 Engine Oil, meeting the requirements of DaimlerChrysler Material Standard MS-6395. Mopar威 Oil Filter (P/N 05281090) Refer to the Vehicle Emission Control Information label in the engine com- partment. 87 Octane

87 Octane Acceptable - 89 Octane Recommended

394 MAINTAINING YOUR VEHICLE

Chassis Component Automatic Transmission Transfer Case (3.7L Engines) Transfer Case (4.7L/5.7L Engines) Axle Differential (Front-Rear)

Brake Master Cylinder

Power Steering Reservoir

Fluid, Lubricant, or Genuine Part Mopar威 ATF+4 Automatic Transmission Fluid Mopar威 ATF+4 Automatic Transmission Fluid Mopar威 NV 247 Transfer Case Lubricant Mopar威 Synthetic Gear & Axle Lubricant SAE 75W-140 (API-GL5) or equivalent with friction modifier additive. Mopar威 DOT 3 Brake Fluid, SAE J1703 should be used. If DOT 3, SAE J1703 brake fluid is not available, then DOT 4 is acceptable. Use only rec- ommended brake fluids. This system requires the use of Mopar威 Hydraulic System Power Steering Fluid (P/N 05142893AA) or equivalent, which meets DaimlerChrysler Ma- terial Standard MS-10838.

MAINTENANCE SCHEDULES

CONTENTS

䡵 Emission Control System Maintenance . . . . . . . . 396
䡵 Maintenance Schedules . . . . . . . . . . . . . . . . . . . 396

▫ Schedule “B” . . . . . . . . . . . . . . . . . . . . . . . . 399
▫ Schedule “A” . . . . . . . . . . . . . . . . . . . . . . . . 409

M

396 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 ⴖBⴖ. 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 • Heavy loading

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.” If ANY of these apply to you then flush and NOTE: replace your engine coolant every 102,000 miles (170 000
km) or 60 months, whichever comes first, and follow “Schedule B” of the “Maintenance Schedules” section of this manual.

MAINTENANCE SCHEDULES 397

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.

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.

398 MAINTENANCE SCHEDULES

damage.

• Check the windshield washer solvent, add as required. 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 engine coolant/anti-freeze level, hoses, and • After completion of off-road operation, the underside of the vehicle should be thoroughly inspected. Exam- ine threaded fasteners for looseness.

clamps.

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 • Trailer towing • Heavy loading

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

SCHEDULE “B” 399

• 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.” If ANY of these apply to you then flush and NOTE: replace your engine coolant every 102,000 miles (170 000
km) or 60 months, whichever comes first, and follow “Schedule B” of the “Maintenance Schedules” section of this manual.

400 SCHEDULE “B”

Miles (Kilometers) Change the engine oil and engine oil filter, if not replaced at 3 months. Rotate the tires. Check spare tire for proper pressure and correct stowage. Inspect the engine air cleaner filter, replace if nec- essary. Drain and refill the front and rear axles. Inspect the brake linings.

3,000
(5 000)

9,000
(15 000)

6,000
(10 000)

12,000
(20 000)

15,000
(25 000)

21,000
(35 000)

18,000
(30 000)

Miles (Kilometers) Change the engine oil and engine oil filter, if not replaced at 3 months. Rotate the tires. Check spare tire for proper pressure and correct stowage. Inspect the engine air cleaner filter, replace if nec- essary. Inspect the PCV Valve, replace if necessary.〫 Replace the spark plugs. Drain and refill the front and rear axles. Inspect the brake linings. Drain the transfer case and refill.

SCHEDULE “B” 401

27,000
(45 000)

24,000
(40 000)

30,000
(50 000)

402 SCHEDULE “B”

Miles (Kilometers) Change the engine oil and engine oil filter, if not replaced at 3 months. Rotate the tires. Check spare tire for proper pressure and correct stowage. Inspect the engine air cleaner filter, replace if nec- essary. Drain and refill the front and rear axles. Inspect the brake linings.

33,000
(55 000)

36,000
(60 000)

39,000
(65 000)

42,000
(70 000)

45,000
(75 000)

SCHEDULE “B” 403

Miles (Kilometers) Change the engine oil and engine oil filter, if not replaced at 3 months. Rotate the tires. Check spare tire for proper pressure and correct stowage. Inspect the engine air cleaner filter, replace if nec- essary. Inspect the PCV Valve, replace if necessary.〫 Replace the spark plugs. Inspect drive belt, replace if necessary. Inspect the brake linings. Drain and refill the front and rear axles. Drain and refill the automatic transmission fluid, and replace main sump filter (4.7L/5.7L Only). Drain and refill the transfer case fluid. Flush and replace engine coolant/anti-freeze.

48,000
(80 000)

51,000
(85 000)

57,000
(95 000)

54,000
(90 000)

60,000
(100 000)

404 SCHEDULE “B”

Miles (Kilometers) Change the engine oil and engine oil filter, if not replaced at 3 months. Rotate the tires. Check spare tire for proper pressure and correct stowage. Inspect the engine air cleaner filter, replace if nec- essary. Inspect the drive belt, replace if necessary. Inspect the brake linings. Drain and refill the front and rear axle fluid.

63,000
(105 000)

66,000
(110 000)

69,000
(115 000)

72,000
(120 000)

75,000
(125 000)

Miles (Kilometers) Change the engine oil and engine oil filter, if not replaced at 3 months. Rotate the tires. Check spare tire for proper pressure and correct stowage. Inspect the engine air cleaner filter, replace if nec- essary. Inspect the PCV Valve, replace if necessary.〫 Replace the spark plugs. Inspect the drive belt, replace if necessary.* Drain and refill the transfer case fluid. Inspect the brake linings. Drain and refill the front and rear axle fluid.

78,000
(130 000)

81,000
(135 000)

84,000
(140 000)

87,000
(145 000)

90,000
(150 000)

SCHEDULE “B” 405

M

406 SCHEDULE “B”

Miles (Kilometers) Change the engine oil and engine oil filter, if not replaced at 3 months. Rotate the tires. Check spare tire for proper pressure and correct stowage. Inspect the engine air cleaner filter, replace if nec- essary. Inspect the drive belt, replace if necessary.* Inspect the brake linings. Drain and refill the front and rear axle fluid. Flush and replace the engine coolant/anti-freeze, if not done at 60 months.

93,000
(155 000)

96,000
(160 000)

99,000
(165 000)

102,000
(170 000)

105,000
(175 000)

Miles (Kilometers) Change the engine oil and engine oil filter, if not replaced at 3 months. Rotate the tires. Check spare tire for proper pressure and correct stowage. Inspect the engine air cleaner filter, replace if nec- essary. Inspect the PCV Valve, replace if necessary.〫 Replace the spark plugs. Inspect the drive belt, replace if necessary.* Inspect the brake linings. Drain and refill the front and rear axle fluid. Drain and refill the automatic transmission fluid, replace main sump filter, and spin-on cooler return filter (if equipped). (4.7L/5.7L Only). Drain and refill the transfer case fluid.

108,000
(180 000)

111,000
(185 000)

114,000
(190 000)

117,000
(195 000)

120,000
(200 000)

SCHEDULE “B” 407

408 SCHEDULE “B”

Miles (Kilometers) Flush and replace the engine coolant/anti-freeze at 120 months, if not replaced at 102,000 miles (170
000 km). Inspection and service should also be performed anytime a malfunction is observed or suspected. Retain all re- ceipts. 〫 This maintenance is recommended by the manufac- turer to the owner, but is not required to maintain emissions warranty.

108,000
(180 000)

111,000
(185 000)

114,000
(190 000)

117,000
(195 000)

120,000
(200 000)

* This maintenance is not required if the belt was previously replaced.

Schedule “A” Miles (Kilometers) [Months] Change the engine oil and engine oil filter. Rotate the tires. Check spare tire for proper pressure and correct stowage. Inspect the engine air cleaner filter, and replace if necessary. Replace the spark plugs. Inspect the brake linings. Drain the transfer case and refill.

SCHEDULE “A” 409

6,000
(10 000)

12,000
(20 000)

18,000
(30 000)

24,000
(40 000)

30,000
(50 000)

[6]

[12]

[24]

[18]

[30]

410 SCHEDULE “A”

Miles (Kilometers) [Months] Change the engine oil and engine oil filter. Rotate the tires. Check spare tire for proper pressure and correct stowage. Inspect the brake linings.

36,000
(60 000)

42,000
(70 000)

48,000
(80 000)

54, 000
(90 000)

[36]

[42]

[48]

[54]

Miles (Kilometers) [Months] Change the engine oil and engine oil filter. Rotate the tires. Check spare tire for proper pressure and correct stowage. Inspect the engine air cleaner filter, and replace if nec- essary. Inspect the PCV Valve, replace if necessary.〫 Replace the spark plugs. Inspect the drive belt, replace if necessary. Flush and replace the engine coolant/anti-freeze at 60
months, if not replaced at 102,000 miles (170 000 km). Inspect the brake linings. Drain the transfer case and refill.

SCHEDULE “A” 411

60,000
(100 000)

66,000
(110 000)

72,000
(120 000)

78,000
(130 000)

[60]

[66]

[78]

[72]