2008 Jeep Wrangler Owners Manual

• The TPMS is not a substitute for proper tire mainte- nance, and it is the driver’s responsibility to maintain correct tire pressure, even if under-inflation has not reached the level to trigger illumination of the Tire Pressure Monitoring Telltale Light. • Seasonal temperature changes will affect tire pressure, and the TPM System will monitor the actual tire pressure in the tire.

Base System The Tire Pressure Monitor System (TPMS) uses wireless technology with wheel rim-mounted electronic sensors to monitor tire pressure levels. Sensors, mounted to each wheel as part of the valve stem, transmit tire pressure readings to the Receiver Module. It is particularly important, for you to check the NOTE: tire pressure in all of your tires regularly and to maintain the proper pressure.

STARTING AND OPERATING 333

The Tire Pressure Monitor System (TPMS) consists of the following components: • Receiver Module • Four Tire Pressure Monitoring Sensors • Tire Pressure Monitoring Telltale Light A tire pressure monitoring sensor is located in the spare wheel if the vehicle is equipped with a matching full size spare wheel and tire assembly. The matching full size spare tire can be used in place of any of the four road tires. A low spare tire will not cause the Tire Pressure Monitoring Telltale Light to illuminate or the chime to sound.

The Tire Pressure Monitoring Telltale Light will illuminate in the instrument cluster, and an au- dible chime will be activated when one or more of the four active road tire pressures are low. Should this occur, you should stop as soon as possible, check the

334 STARTING AND OPERATING

inflation pressure of each tire on your vehicle, and inflate each tire to the vehicle’s recommended cold placard pressure value. The system will automatically update and the Tire Pressure Monitoring Telltale Light will extinguish once the updated tire pressures have been received. The vehicle may need to be driven for up to 10
minutes above 15 mph (25 km/h) to receive this infor- mation. The Tire Pressure Monitoring Telltale Light will flash on and off for 75 seconds, and will remain on solid when a system fault is detected. The system fault will also sound a chime. If the ignition key is cycled, this sequence will repeat, providing the system fault still exists. A system fault can occur by any of the following scenarios: 1. Jamming due to electronic devices or driving next to facilities emitting the same Radio Frequencies as the TPM sensors. 2. Installing some form of aftermarket window tinting that affects radio wave signals.

3. Lots of snow or ice around the wheels or wheel housings. 4. Using tire chains on the vehicle. 5. Using wheels/tires not equipped with TPM sensors. If your vehicle is equipped with a matching NOTE: full-size spare wheel and tire assembly, it has a tire pressure monitoring sensor, and can be monitored by the Tire Pressure Monitoring System (TPMS). In the event that the matching full-size spare tire is swapped with a low pressure road tire, the next ignition key cycle will still show the Tire Pressure Monitoring Telltale Light to be ON, and a chime to sound. Driving the vehicle for up to 10 minutes above 15 mph (25 km/h) will turn OFF the Tire Pressure Monitoring Telltale Light as long as none of the road tires are below the low pressure warning thresh- old.

If your vehicle is not equipped with a matching NOTE: full-size spare wheel and tire assembly, it does not have a tire pressure monitoring sensor in the spare tire. The TPMS will not be able to monitor the tire pressure. If you install the spare tire in place of a road tire that has a pressure below the low-pressure warning limit, upon the next ignition key cycle, a chime will sound and the Tire Pressure Monitoring Telltale Light will turn ON. After driving the vehicle for up to 10 minutes above 15 mph (25
km/h), the Tire Pressure Monitoring Telltale Light will flash on and off for 75 seconds and then remain on solid. For each subsequent ignition key cycle, a chime will sound and the Tire Pressure Monitoring Telltale Light will flash on and off for 75 seconds and then remain on solid. Once you repair or replace the original road tire, and reinstall it on the vehicle in place of the spare tire, the TPMS will update automatically and the Tire Pressure Monitoring Telltale Light will turn OFF, as long as no tire pressure is below the low-pressure warning limit in any

STARTING AND OPERATING 335

of the four active road tires. The vehicle may need to be driven for up to 10 minutes above 15 mph (25 km/h) in order for the TPMS to receive this information. General Information This device complies with part 15 of the FCC rules and RSS 210 of Industry Canada. Operation is subject to the following conditions: • This device may not cause harmful interference. • This device must accept any interference received, including interference that may cause undesired op- eration.

The tire pressure sensors are covered under one of the following licenses:

United States . . . . . . . . . . . . . . . . . . . . . KR5S120123
Canada . . . . . . . . . . . . . . . . . . . . . . . . 2671-S120123

336 STARTING AND OPERATING

FUEL REQUIREMENTS

All engines (except 5.7L engines) are de- signed to meet all emissions regulations and provide excellent fuel economy and performance when using high quality un- leaded “regular” gasoline having an oc- tane rating of 87. The use of premium gasoline is not recommended. Under normal conditions, the use of premium gasoline will not provide a benefit over high quality regular gasoline, and in some circum- stances may result in poorer performance. Light spark knock at low engine speeds is not harmful to your engine. However, continued heavy spark knock at high speeds can cause damage and immediate service is required.

Poor quality gasoline can cause problems such as hard starting, stalling and hesitations. If you experience these symptoms, try another brand of gasoline before consid- ering service for the vehicle. Over 40 auto manufacturer’s worldwide have issued and endorsed consistent gasoline specifications (the World- wide Fuel Charter, WWFC) to define fuel properties necessary to deliver enhanced emissions, performance, and durability for your vehicle. The manufacturer recom- mends the use of gasoline that meets the WWFC speci- fications if they are available. Reformulated Gasoline Many areas of the country require the use of cleaner burning gasoline referred to as “Reformulated Gasoline.” Reformulated gasoline contains oxygenates, and are spe- cifically blended to reduce vehicle emissions and im- prove air quality.

The manufacturer supports the use of reformulated gaso- line. Properly blended reformulated gasoline will pro- vide excellent performance and durability for the engine and fuel system components. Gasoline/Oxygenate Blends Some fuel suppliers blend unleaded gasoline with oxy- genates such as 10% ethanol, MTBE, and ETBE. Oxygen- ates are required in some areas of the country during the winter months to reduce carbon monoxide emissions. Fuels blended with these oxygenates may be used in your vehicle.

CAUTION!

DO NOT use gasolines containing Methanol. Use of these blends may result in starting and drivability problems and may damage critical fuel system components.

STARTING AND OPERATING 337

Problems that result from using methanol/gasoline blends are not the responsibility of the manufacturer. While MTBE is an oxygenate made from Methanol, it does not have the negative effects of Methanol. MMT In Gasoline MMT is a manganese containing metallic additive that is blended into some gasoline to increase the octane num- ber. Gasoline blended with MMT offers no performance advantage beyond gasoline of the same octane number without MMT. Gasoline blended with MMT has shown to reduce sparkplug life and reduce emission system performance in some vehicles. The manufacturer recom- mends that gasoline without MMT be used in your vehicle. The MMT content of gasoline may not be indi- cated on the gasoline pump, therefore, you should ask your gasoline retailer if the gasoline contains MMT.

338 STARTING AND OPERATING

and California-

It is even more important to look for gasoline without MMT in Canada, because MMT can be used at levels higher than those allowed in the United States. MMT is prohibited in Federal reformulated gasoline. Materials Added To Fuel All gasoline sold in the United States is required to contain effective detergent additives. Use of additional detergents or other additives are not needed under normal conditions and would result in additional cost. Therefore you should not have to add anything to the fuel.

Fuel System Cautions

CAUTION!

Follow these guidelines to maintain your vehicle’s performance:

• The use of leaded gasoline is prohibited by Federal law. Using leaded gasoline can impair engine perfor- mance, and damage the emission control system. • An out-of-tune engine, or certain fuel or ignition malfunctions, can cause the catalytic converter to overheat. If you notice a pungent burning odor or some light smoke, your engine may be out of tune or malfunctioning and may require immediate service. Contact your authorized dealer for service assistance.

• The use of fuel additives which are now being sold as octane enhancers is not recommended. Most of these products contain high concentrations of methanol. Fuel system damage or vehicle performance problems resulting from the use of such fuels or additives is not the responsibility of the manufacturer.

Intentional tampering with emissions control in civil penalties being assessed

NOTE: systems can result against you. Carbon Monoxide Warnings

WARNING!

Carbon monoxide (CO) in exhaust gases is deadly. Follow the precautions below to prevent carbon monoxide poisoning:

STARTING AND OPERATING 339

• Do not inhale exhaust gases. They contain carbon monoxide, a colorless and odorless gas which can kill. Never run the engine in a closed area, such as a garage, and never sit in a parked vehicle with the engine running for an extended period. If the vehicle is stopped in an open area with the engine running for more than a short period, adjust the ventilation system to force fresh, outside air into the vehicle. • Guard against carbon monoxide with proper mainte- nance. Have the exhaust system inspected every time the vehicle is raised. Have any abnormal conditions repaired promptly. Until repaired, drive with all side windows fully open. • Keep the swing gate closed when driving your vehicle to prevent carbon monoxide and other poisonous exhaust gases from entering the vehicle.

340 STARTING AND OPERATING

ADDING FUEL

Fuel Filler Cap (Gas Cap) The gas cap is located on the driver’s side of the vehicle. If the gas cap is lost or damaged, be sure the replacement cap is the correct one for this vehicle.

Loose Fuel Filler Cap Message (gASCAP) After fuel has been added, the vehicle diagnostic system can determine if the fuel filler cap is possibly loose, improperly installed, or damaged. If the system detects a malfunction, the “gASCAP” message will display in the odometer display. Tighten the gas cap until a ⬙clicking⬙ sound is heard. This is an indication that the gas cap is properly tightened. Press the odometer reset button to turn the message off. If the problem persists, the message will appear the next time the vehicle is started. This might indicate a damaged cap. If the problem is detected twice in a row, the system will turn on the Malfunction Indicator Light. Resolving the problem will turn the MIL light off.

Fuel Filler Cap

STARTING AND OPERATING 341

CAUTION!

WARNING!

Damage to the fuel system or emission control sys- tem could result from using an improper fuel cap (gas cap). A poorly fitting cap could let impurities into the fuel system. Also, a poorly fitting after- market cap can cause the Malfunction Indicator Light to illuminate, due to fuel vapors escaping from the system.

• Never have any smoking materials lit in or near the vehicle when the gas cap is removed or the tank filled. • Never add fuel when the engine is running. This is in violation of most state and federal fire regula- tions and will cause the Malfunction Indicator Light to turn on.

CAUTION!

To avoid fuel spillage and overfilling, do not “top off” the fuel tank after filling.

NOTE: When the fuel nozzle “clicks” or shuts off, the fuel tank is full.

NOTE: Tighten the gas cap about 1/4 turn until you hear one click. This is an indication that cap is properly tightened. If the gas cap is not tightened properly, the Malfunction Indicator Light will come on. Be sure the gas cap is tightened every time the vehicle is refueled.

342 STARTING AND OPERATING

WARNING!

A fire may result if gasoline is pumped into a portable container that is inside of a vehicle. You could be burned. Always place gas containers on the ground while filling.

VEHICLE LOADING

Certification Label As required by National Highway Traffic Safety Admin- istration regulations, your vehicle has a certification label affixed to the driver’s side door or B-Pillar. This label contains the month and year of manufacture, Gross Vehicle Weight Rating (GVWR), Gross Axle Weight Rating (GAWR) front and rear, and Vehicle Identification Number (VIN). A Month-Day-Hour (MDH) number is

included on this label and indicates the month, day, and hour of manufacture. The bar code that appears on the bottom of the label is your VIN. Gross Vehicle Weight Rating (GVWR) The GVWR is the total permissible weight of your vehicle including driver, passengers, vehicle, options, trailer tongue weight, and cargo. The label also specifies maxi- mum capacities of front and rear axle systems (GAWR). Total load must be limited, so GVWR, and front and rear GAWR are not exceeded. Payload The payload of a vehicle is defined as the allowable load weight a truck can carry, including the weight of the driver, all passengers, options and cargo. Gross Axle Weight Rating (GAWR) The GAWR is the maximum permissible load on the front and rear axles. The load must be distributed in the cargo area so that the GAWR of each axle is not exceeded.

Each axle’s GAWR is determined by the components in the system with the lowest load carrying capacity (axle, springs, tires, or wheels). Heavier axles or suspension components, sometimes specified by purchasers for in- creased durability, does not necessarily increase the ve- hicle’s GVWR. Tire Size The tire size on the label represents the actual tire size on your vehicle. Replacement tires must be equal to the load capacity of this tire size. Rim Size This is the rim size that is appropriate for the tire size listed. Inflation Pressure This is the cold tire inflation pressure for your vehicle for all loading conditions up to full GAWR.

STARTING AND OPERATING 343

Curb Weight The curb weight of a vehicle is defined as the total weight of the vehicle with all fluids, including vehicle fuel, at full capacity conditions, and with no occupants or cargo loaded into the vehicle. The front and rear curb weight values are determined by weighing your vehicle on a commercial scale before any occupants or cargo are added. Loading The actual total weight and the weight of the front and rear of your vehicle at the ground can best be determined by weighing it when it is loaded and ready for operation. The entire vehicle should first be weighed on a commer- cial scale to ensure that the GVWR has not been ex- ceeded. The weight on the front and rear of the vehicle should then be determined separately to be sure that the load is properly distributed over front and rear axle. Weighing the vehicle may show that the GAWR of either

344 STARTING AND OPERATING

the front or rear axles has been exceeded, but the total load is within the specified GVWR. If so, weight must be shifted from front to rear, or rear to front, as appropriate until the specified weight limitations are met. Store the heavier items down low and be sure that the weight is distributed equally. Stow all loose items securely before driving. Improper weight distributions can have an adverse affect on the way your vehicle steers and handles, and the way the brakes operate.

CAUTION!

Do not load your vehicle any heavier than the GVWR or the maximum front and rear GAWR. If you do, parts on your vehicle can break, or it can change the way your vehicle handles. This could cause you to lose control. Also, overloading can shorten the life of your vehicle.

TRAILER TOWING In this section you will find safety tips and information on limits to the type of towing you can reasonably do with your vehicle. Before towing a trailer carefully re- view this information to tow your load as efficiently and safely as possible. To maintain warranty coverage, follow the requirements and recommendations in this Owner’s Manual concern- ing vehicles used for trailer towing.

Common Towing Definitions The following trailer towing-related definitions will as- sist you in understanding the following information: Gross Vehicle Weight Rating (GVWR) The GVWR is the total allowable weight of your vehicle. This includes driver, passengers, cargo and trailer tongue weight. The total load must be limited so that you do not exceed the GVWR. Gross Trailer Weight (GTW) The GTW is the weight of the trailer plus the weight of all cargo, consumables and equipment (permanent or tem- porary) loaded in or on the trailer in its ⬙loaded and ready for operation⬙ condition. The recommended way to measure GTW is to put your fully-loaded trailer on a vehicle scale. The entire weight of the trailer must be supported by the scale.

STARTING AND OPERATING 345

Gross Combination Weight Rating (GCWR) The GCWR is the total permissible weight of your vehicle and trailer when weighed in combination. (Note that GCWR ratings include a 150 lbs (68 kg) allowance for the presence of a driver). Gross Axle Weight Rating (GAWR) The GAWR is the maximum capacity of the front and rear axles. Distribute the load over the front and rear axles evenly. Make sure that you do not exceed either front or rear GAWR.

WARNING!

It is important that you do not exceed the maximum front or rear GAWR. A dangerous driving condition can result if either rating is exceeded. You could lose control of the vehicle and have an accident.

346 STARTING AND OPERATING

Trailer Tongue Weight (TW) The trailer tongue weight is the downward force exerted on the hitch ball by the trailer. In most cases it should not be less than 10% or more than 15% of the trailer load. You must consider this as part of the load on your vehicle. Frontal Area The frontal area is the maximum height and maximum width of the front of a trailer. Trailer Sway Control The trailer sway control is a telescoping link that can be installed between the hitch receiver and the trailer tongue. It typically provides adjustable friction associ- ated with the telescoping motion to dampen any un- wanted trailer swaying motions while traveling. Weight-Carrying Hitch A weight-carrying hitch supports the trailer tongue weight, just as if it were luggage located at a hitch ball or some other connecting point of the vehicle. This kind of

hitch is the most popular on the market today and is commonly used to tow small and medium-sized trailers. Weight-Distributing Hitch A weight-distributing hitch system works by applying leverage through spring (load) bars. It is typically used for heavier loads, to distribute trailer tongue weight to the tow vehicle’s front axle and the trailer axle(s). When used in accordance with the manufacturers’ directions, it provides for a more level ride, offering more consistent steering and brake control thereby enhancing towing safety. The addition of a friction/hydraulic sway control also dampens sway caused by traffic and crosswinds, and contributes positively to tow vehicle and trailer stability. Trailer sway control and a weight-distributing (load-equalizing) hitch are recommended for heavier tongue weights (TW) and may be required depending on vehicle and trailer configuration/loading to comply with Gross Axle Weight Rating (GAWR) requirements.

WARNING!

STARTING AND OPERATING 347

An improperly adjusted weight-distributing hitch system may reduce handling, stability, braking per- formance, and could result in an accident. Weight-Distributing Hitch Systems may not be com- patible with Surge Brake Couplers. Consult with your hitch and trailer manufacturer or a reputable Recreational Vehicle additional information.

dealer

for

Weight-Distributing Hitch System

348 STARTING AND OPERATING

Improper Adjustment of Weight-Distributing System

Trailer Hitch Classification The following chart provides the industry standard for the maximum trailer weight a given trailer hitch class can tow and should be used to assist you in selecting the correct trailer hitch for your intended towing condition.

Refer to the Trailer Towing Weights (Maximum Trailer Weight Ratings) chart for the Max. GTW towable for your given drivetrain.

Trailer Hitch Classification

Class

Max. GTW (Gross Trailer

Wt.)

2,000 lbs (907 kg) 3,500 lbs (1 587 kg)

Class I - Light Duty Class II - Medium Duty All trailer hitches should be professionally installed on your vehicle. Trailer Towing Weights (Maximum Trailer Weight Ratings) The following chart provides the maximum trailer weight ratings towable for your given drivetrain.

Engine/

Transmission

3.8L/Manual

3.8L/Manual

3.8L/

Automatic 3.8L/Manual

3.8L/Manual

3.8L/

Automatic 3.8L/Manual

Axle

Model

3.21

3.73

3.73

3.21

3.73

3.73

4.10

2–Door X

Model (4WD)

2–Door X

Model (4WD)

2–Door X

Model (4WD) 2–Door Sahara Model (4WD) 2–Door Sahara Model (4WD) 2–Door Sahara Model (4WD) 2–Door Rubi- con Model

(4WD)

STARTING AND OPERATING 349

GCWR (Gross Combined Wt.

Rating) 4,987 lbs (2 262 kg) 5,987 lbs (2 716 kg) 6,032 lbs (2 736 kg) 5,163 lbs (2 342 kg) 6,163 lbs (2 795 kg) 6,163 lbs (2 795 kg) 6,236 lbs (2 829 kg)

Frontal Area

Max. GTW (Gross Trailer

Wt.)

25 sq ft

(2.32 sq m)

25 sq ft

(2.32 sq m)

25 sq ft

(2.32 sq m)

25 sq ft

(2.32 sq m)

25 sq ft

(2.32 sq m)

25 sq ft

(2.32 sq m)

25 sq ft

(2.32 sq m)

1,000 lbs (453 kg) 2,000 lbs (907 kg) 2,000 lbs (907 kg) 1,000 lbs (453 kg) 2,000 lbs (907 kg) 2,000 lbs (907 kg) 2,000 lbs (907 kg)

Max. Trailer Tongue Wt. (See Note)

100 lbs (45 kg)

200 lbs (91 kg)

200 lbs (91 kg)

100 lbs (45 kg)

200 lbs (91 kg)

200 lbs (91 kg)

200 lbs (91 kg)

350 STARTING AND OPERATING

3.8L/

Automatic

3.8L/Manual

3.8L/Manual

3.8L/

Automatic 3.8L/Manual

3.8L/Manual

3.8L/

Automatic 3.8L/Manual

3.8L/Manual

4.10

3.21

3.73

3.73

3.21

3.73

3.73

3.21

3.73

2–Door Rubi- con Model

(4WD)

4–Door X

Model (2WD)

4–Door X

Model (2WD)

4–Door X

Model (2WD) 4–Door Sahara Model (2WD) 4–Door Sahara Model (2WD) 4–Door Sahara Model (2WD)

4–Door X

Model (4WD)

4–Door X

Model (4WD)

6,281 lbs (2 849 kg)

5,121 lbs (2 323 kg) 7,621 lbs (3 457 kg) 7,647 lbs (3 469 kg) 5,277 lbs (2 394 kg) 7,777 lbs (3 527 kg) 7,803 lbs (3 539 kg) 5,325 lbs (2 415 kg) 7,825 lbs (3 549 kg)

25 sq ft

(2.32 sq m)

32 sq ft

(2.97 sq m)

32 sq ft

(2.97 sq m)

32 sq ft

(2.97 sq m)

32 sq ft

(2.97 sq m)

32 sq ft

(2.97 sq m)

32 sq ft

(2.97 sq m)

32 sq ft

(2.97 sq m)

32 sq ft

(2.97 sq m)

2,000 lbs (907 kg)

1,000 lb s (453 kg) 3,500 lbs (1 587 kg) 3,500 lbs (1 587 kg) 1,000 lbs (453 kg) 3,500 lbs (1 587 kg) 3,500 lbs (1 587 kg) 1,000 lbs (453 kg) 3,500 lbs (1 587 kg)

200 lbs (91 kg)

100 lbs (45 kg) 350 lbs (159 kg) 350 lbs (159 kg) 100 lbs (45 kg) 350 lbs (159 kg) 350 lbs (159 kg) 100 lbs (45 kg) 350 lbs (159 kg)

3.8L/

Automatic 3.8L/Manual

3.8L/Manual

3.8L/

Automatic 3.8L/Manual

3.8L/

Automatic

3.73

3.21

3.73

3.73

4.10

4.10

4–Door X

Model (4WD) 4–Door Sahara Model (4WD) 4–Door Sahara Model (4WD) 4–Door Sahara Model (4WD) 4–Door Rubi- con Model

(4WD)

4–Door Rubi- con Model

(4WD)

STARTING AND OPERATING 351

7,825 lbs (3 549 kg) 5,481 lbs (2 486 kg) 7,981 lbs (3 620 kg) 8,027 lbs (3 641 kg) 8,059 lbs (3 655 kg)

8,104 lbs (3 676 kg)

32 sq ft

(2.97 sq m)

32 sq ft

(2.97 sq m)

32 sq ft

(2.97 sq m)

32 sq ft

(2.97 sq m)

32 sq ft

(2.97 sq m)

32 sq ft

(2.97 sq m)

3,500 lbs (1 587 kg) 1,000 lbs (453 kg) 3,500 lbs (1 587 kg) 3,500 lbs (1 587 kg) 3,500 lbs (1 587 kg)

3,500 lbs (1 587 kg)

350 lbs (159 kg) 100 lbs (45 kg) 350 lbs (159 kg) 350 lbs (159 kg) 350 lbs (159 kg)

350 lbs (159 kg)

Refer to local laws for maximum trailer towing speeds.

NOTE: The trailer tongue weight must be considered as part of the combined weight of occupants and cargo, and should never exceed the weight referenced on the Tire

and Loading Information placard. Refer to the “Tire Safety Information” section in this manual.

352 STARTING AND OPERATING

Trailer and Trailer Tongue Weight Always load a trailer with 60% to 65% of the weight in the front of the trailer. This places 10% to 15% of the Gross Trailer Weight (GTW) on the tow hitch of your vehicle. Loads balanced over the wheels or heavier in the rear can cause the trailer to sway severely side-to-side which will cause loss of control of vehicle and trailer. Failure to load trailers heavier in front is the cause of many trailer accidents.

Consider the following items when computing the weight on the rear axle of the vehicle: • The trailer tongue weight. • The weight of any other type of cargo or equipment • The weight of the driver and all passengers.

put in or on your vehicle.

NOTE: Remember that everything put into or on the trailer adds to the load on your vehicle. Also, additional factory-installed options, or authorized dealer-installed options, must be considered as part of the total load on your vehicle. Refer to the Tire and Loading Information placard in the “Tire Safety Information” section of this manual for the maximum combined weight of occupants and cargo for your vehicle. Towing Requirements To promote proper break-in of your new vehicle driv- etrain components, the following guidelines are recom- mended: NOTE: Trailer towing requires special rear axle lubri- cant. Refer to “Fluids, Lubricants, and Genuine Parts” in Section 7 for more information.

STARTING AND OPERATING 353

CAUTION!

• Avoid towing a trailer for the first 500 mi (805 km) of vehicle operation. Doing so may damage your vehicle.

Perform the maintenance listed in the “Maintenance Schedule.” Refer to Section 8 of this manual. When towing a trailer, never exceed the GAWR, or GCWR, ratings.

354 STARTING AND OPERATING

WARNING!

Improper towing can lead to an injury accident. Follow these guidelines to make your trailer towing as safe as possible: Make certain that the load is secured in the trailer and will not shift during travel. When trailering cargo that is not fully secured, dynamic load shifts can occur that may be difficult for the driver to control. You could lose control of your vehicle and have an accident.

• When hauling cargo or towing a trailer, do not over- load your vehicle or trailer. Overloading can cause a loss of control, poor performance or damage to brakes, axle, engine, transmission, steering, suspension, chas- sis structure or tires.

• Safety chains must always be used between your vehicle and trailer. Always connect the chains to the frame or hook retainers of the vehicle hitch. Cross the chains under the trailer tongue and allow enough slack for turning corners. • Vehicles with trailers should not be parked on a grade. When parking, apply the parking brake on the tow vehicle. Put the tow vehicle automatic transmission in PARK. With a manual transmission, shift the transmis- sion into 1st gear. And with four-wheel-drive vehicles, make sure the transfer case is not in N (Neutral). Always, block or ⬙chock⬙ the trailer wheels.

• GCWR must not be exceeded. • Total weight must be distributed between the tow vehicle and the trailer such that the following four ratings are not exceeded: 1. GVWR

2. GTW 3. GAWR 4. Tongue weight rating for the trailer hitch utilized (This requirement may limit the ability to always achieve the 10% to 15% range of tongue weight as a percentage of total trailer weight).

Towing Requirements — Tires − Do not attempt to tow a trailer while using a compact

spare tire.

− Proper tire inflation pressures are essential to the safe and satisfactory operation of your vehicle. Refer to the “Tires–General Information” section of this manual for proper tire inflation procedures.

− Also, check the trailer tires for proper tire inflation

pressures before trailer usage.

STARTING AND OPERATING 355

− Check for signs of tire wear or visible tire damage before towing a trailer. Refer to the “Tires–General Information” section of this manual for the proper inspection procedure.

− When replacing tires, refer to the “Tires–General Infor- mation” section for proper tire replacement proce- dures. Replacing tires with a higher load carrying capacity will not increase the vehicle’s GVWR and GAWR limits.

Towing Requirements — Trailer Brakes − Do not interconnect the hydraulic brake system or vacuum system of your vehicle with that of the trailer. This could cause inadequate braking and possible personal injury.

356 STARTING AND OPERATING

− An electronically-actuated trailer brake controller is required when towing a trailer with electronically actuated brakes. When towing a trailer equipped with a hydraulic surge-actuated brake system, an electronic brake controller is not required.

− Trailer brakes are recommended for trailers over 1,000
lbs (454 kg) and required for trailers in excess of 2,000
lbs (907 kg).

CAUTION!

If the trailer weighs more than 1,000 lbs (454 kg) loaded, it should have its own brakes and they should be of adequate capacity. Failure to do this could lead to accelerated brake lining wear, higher brake pedal effort, and longer stopping distances.

WARNING!

Do not connect trailer brakes to your vehicle’s hy- draulic brake lines. It can overload your brake sys- tem and cause it to fail. You might not have brakes when you need them and could have an accident. Towing any trailer will increase your stopping dis- tance. When towing you should allow for additional space between your vehicle and the vehicle in front of you. Failure to do so could result in an accident.

Towing Requirements — Trailer Lights & Wiring Whenever you pull a trailer, regardless of the trailer size, stop lights and turn signals on the trailer are required for motoring safety.

The Trailer Tow Package will include a 4–pin wiring harness. Use a factory-approved trailer harness and connector. NOTE: Do not cut or splice wiring into the vehicles wiring harness. The electrical connections are all complete to the vehicle but you must mate the harness to a trailer connector. Refer to the following illustration.

STARTING AND OPERATING 357

4 - Pin Connector

Towing Tips Before setting out on a trip, practice turning, stopping and backing the trailer in an area away from heavy traffic.

358 STARTING AND OPERATING

If using a manual transmission vehicle for trailer towing, all starts must be in 1st gear to avoid excessive clutch slippage. Towing Tips — Automatic Transmission The DRIVE range can be selected when towing. How- ever, if frequent shifting occurs while in this range, the OVERDRIVE range should be selected. NOTE: Using “O/D OFF” while operating the vehicle under heavy operating conditions will improve perfor- mance and extend transmission life by reducing exces- sive shifting and heat build up. This action will also provide better engine braking. The automatic transmission fluid and filter should be changed if you REGULARLY tow a trailer for more than 45 minutes of continuous operation. Refer to the “Main- tenance Schedule” in Section 8 of this manual for trans- mission fluid change intervals.

NOTE: Check the automatic transmission fluid level before towing. Towing Tips — O/D Off To reduce potential for automatic transmission overheat- ing, select the “O/D OFF” feature when driving in hilly areas or shift the transmission to DRIVE position 2 on more severe grades. Refer to “Transmission Shifting” in this section. Towing Tips — Electronic Speed Control (If Equipped) − Don’t use in hilly terrain or with heavy loads. − When using the speed control, if you experience speed drops greater than 10 mph (16 km/h), disengage until you can get back to cruising speed.

− Use speed control in flat terrain and with light loads to

maximize fuel efficiency.

Towing Tips — Cooling System To reduce potential for engine and transmission over- heating, take the following actions: − Highway Driving Reduce speed. − Air Conditioning Turn off temporarily. − refer to Cooling System Operating information in the Maintenance section of this manual for more informa- tion.

STARTING AND OPERATING 359

RECREATIONAL TOWING (BEHIND MOTORHOME, ETC.)

CAUTION!

Front or rear wheel lifts should not be used. Internal damage to the transmission or transfer case will occur if a front or rear wheel lift is used when recreational towing.

Towing – 2WD Models

Recreational towing is allowed ONLY if the rear drive- shaft is removed. See your authorized dealer or refer to the Service Manual. Towing with the rear wheels on the ground while the driveshaft is connected can result in severe transmission damage.

360 STARTING AND OPERATING

Towing – 4WD Models

NOTE: The transfer case must be shifted into N (Neu- tral) for recreational towing. Shifting Into Neutral (N) Use the following procedure to prepare your vehicle for recreational towing.

CAUTION!

It is necessary to follow these steps to be certain that the transfer case is fully in N (Neutral) before recre- ational towing to prevent damage to internal parts.

1. Depress brake pedal. 2. Shift automatic transmission into NEUTRAL or de- press clutch pedal on manual transmission. 3. Shift transfer case lever into N (Neutral).

4. Start engine. 5. Shift automatic transmission into DRIVE or manual transmission into gear. 6. Release brake pedal and ensure that there is no vehicle movement. 7. Shut the engine off and place the ignition key into the ACC position. 8. Shift automatic transmission into PARK. 9. Apply parking brake. 10. Attach vehicle to the tow vehicle with tow bar. 11. Release parking brake. 12. Disconnect the negative battery cable, and secure it away from the negative battery post.

CAUTION!

Damage to the transmission may occur if the trans- mission is shifted into PARK with the transfer case in N (Neutral) and the engine running. With the trans- fer case in N (Neutral) ensure that the engine is off prior to shifting the transmission into PARK (refer to steps 7 – 8above).

Shifting Out Of Neutral (N) Use the following procedure to prepare your vehicle for normal usage. 1. Shift automatic transmission into NEUTRAL or de- press clutch pedal on manual transmission. 2. Shift transfer case lever into desired position. 3. Shift automatic transmission into DRIVE or release clutch on manual transmissions.

STARTING AND OPERATING 361

NOTE: When shifting out of transfer case N (Neutral) on automatic transmission-equipped vehicles, turning the engine off may be required to avoid gear clash.

WARNING!

You or others could be injured if you leave the vehicle unattended with the transfer case in the N (Neutral) position without first fully engaging the parking brake. The transfer case N (Neutral) position disengages both the front and rear driveshafts from the powertrain and will allow the vehicle to move despite the transmission position. The parking brake should always be applied when the driver is not in the vehicle.

362 STARTING AND OPERATING

CAUTION!

• Do not use a bumper-mounted clamp-on tow bar on your vehicle. The bumper face bar will be damaged.

WHAT TO DO IN EMERGENCIES

CONTENTS

䡵 Hazard Warning Flashers . . . . . . . . . . . . . . . . . 364
䡵 If Your Engine Overheats . . . . . . . . . . . . . . . . . 365
䡵 Jacking And Tire Changing . . . . . . . . . . . . . . . . 366
▫ Jack Location . . . . . . . . . . . . . . . . . . . . . . . . 366
▫ Spare Tire Stowage . . . . . . . . . . . . . . . . . . . . 367

▫ Preparations For Jacking . . . . . . . . . . . . . . . . 367
▫ Jacking Instructions . . . . . . . . . . . . . . . . . . . . 368
䡵 Jump Starting . . . . . . . . . . . . . . . . . . . . . . . . . 371
䡵 Emergency Tow Hooks — If Equipped . . . . . . . . 374
䡵 Towing A Disabled Vehicle . . . . . . . . . . . . . . . . 374

364 WHAT TO DO IN EMERGENCIES

HAZARD WARNING FLASHERS Your vehicle’s hazard warning flasher is an emergency warning system. When you activate it, all front and rear directional signals will flash intermittently. Use it when your vehicle is disabled on or near the road. It warns other drivers to steer clear of you and your vehicle. This is an emergency warning system, not to be used when the vehicle is in motion. To activate the warning flashers, press the switch on the lower switch bank (below the climate controls). To turn the warning flashers off, press the switch again.

Hazard Warning Switch

NOTE: With extended use, the flasher may wear down your battery.

IF YOUR ENGINE OVERHEATS In any of the following situations, you can reduce the potential for overheating by taking the appropriate ac- tion. • On the highways — Slow down. • In city traffic — While stopped, shift transmission into

NEUTRAL, but do not increase engine idle speed.

NOTE: There are steps that you can take to slow down an impending overheat condition. If your air conditioner is on, turn it off. The air conditioning system adds heat to the engine cooling system and turning off the A/C removes this heat. You can also turn the Temperature Control to maximum heat, the Mode Control to floor, and the Fan Control to High. This allows the heater core to act as a supplement to the radiator and aids in removing heat from the engine cooling system.

WHAT TO DO IN EMERGENCIES 365

CAUTION!

Driving with a hot cooling system could damage your vehicle. If the temperature gauge reads HOT (H), pull over and stop the vehicle. Idle the vehicle with the air conditioner turned off until the pointer drops back into the normal range. If the pointer remains on HOT (H), and you hear continuous chimes, turn the engine off immediately, and call for service.

366 WHAT TO DO IN EMERGENCIES

JACKING AND TIRE CHANGING

Jack Location

The jack and lug wrench are located in the rear storage compartment. Refer to “Storage” in Section 3 of this manual.

WARNING!

• Getting under a jacked-up vehicle is dangerous. The vehicle could slip off the jack and fall on you. You could be crushed. Never get any part of your body under a vehicle that is on a jack. If you need to get under a raised vehicle, take it to a service center where it can be raised on a lift. • The jack is designed to use as a tool for changing tires only. The jack should not be used to lift the vehicle for service purposes. The vehicle should be jacked on a firm level surface only. Avoid ice or slippery areas.

Jack Storage

Spare Tire Stowage To remove the spare tire from the carrier, remove the tire cover, if equipped, and remove the lug nuts with the lug wrench turning them counterclockwise. If you have added aftermarket accessories to the NOTE: spare tire mounted carrier, it cannot exceed a gross weight of 50 lbs (23 kg) including the weight of the spare tire. Preparations For Jacking Park on a firm level surface, avoid ice or slippery areas, set the parking brake and shift automatic transmission into PARK, or manual transmission into REVERSE. Turn OFF the ignition.

WHAT TO DO IN EMERGENCIES 367

WARNING!

Do not attempt to change a tire on the side of the vehicle close to moving traffic. Pull far enough off the road to avoid being hit when operating the jack or changing the wheel.

Warning Flashers” in this section.

• Turn on the hazard warning flashers. Refer to “Hazard • Block both the front and rear of the wheel diagonally oppo- site of the jacking position. For example, if changing the right front tire, block the left rear wheel. • Passengers should not remain in the vehicle when the

vehicle is being jacked.

368 WHAT TO DO IN EMERGENCIES

Jacking Instructions

WARNING!

Jack Warning Label

raised.

of the roadway as possible before raising the vehicle.

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 • Block the wheel diagonally opposite the wheel to be • Set the parking brake firmly, and shift a automatic transmission into PARK; or a manual transmission into REVERSE. • Never start or run the engine with the vehicle on a jack. • 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 and for • If working on or near a roadway, be extremely careful of • To assure that spare tires, flat or inflated are securely stowed, spares must be stowed with the valve stem facing the ground.

lifting this vehicle during a tire change.

• Turn on the hazard warning flasher.

motor traffic.

1. Remove spare tire, jack and tools from stored location. 2. Loosen (but do not remove) the wheel lug nuts by turning them to the left one turn while the wheel is still on the ground. 3. Assemble the jack and jacking tools. Connect jack handle driver to extension, then to lug wrench. 4. Operate jack from the front or the rear of the vehicle. Place the jack under the axle tube, as shown. Do not raise the vehicle until you are sure the jack is fully engaged.

WHAT TO DO IN EMERGENCIES 369

Jacking Locations

5. Raise the vehicle by turning the jack screw to the right. Raise the vehicle only until the tire just clears the surface and enough clearance is obtained to install the spare tire. Minimum tire lift provides maximum stability.

370 WHAT TO DO IN EMERGENCIES

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 spare wheel/tire on vehicle and install lug nuts with cone-shaped end toward wheel. Lightly tighten nuts clockwise. 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 by turning the jack screw to the left, and remove the jack and wheel blocks.

9. Finish tightening the lug nuts. Push down on the wrench while tightening for increased leverage. Alternate nuts until each nut has been tightened twice. Correct wheel nut tightness is 95 ft lbs (130 N·m). If in doubt about the correct tightness, have them checked with a torque wrench by your authorized dealer or at a service station. 10. Remove jack assembly and wheel blocks.

WARNING!

A loose tire or jack, thrown forward in a collision or hard stop, could endanger the occupants of the ve- hicle. Always stow the jack parts and the spare tire in the places provided.

11. Secure the tire, jack, and tools in their proper loca- tions.

JUMP STARTING If the vehicle has a discharged battery, booster cables may be used to obtain a start from a booster battery or the battery in another vehicle. This type of start can be dangerous if done improperly, so follow this procedure carefully.

WHAT TO DO IN EMERGENCIES 371

WARNING!

Battery fluid is a corrosive acid solution; do not allow battery fluid to contact eyes, skin or clothing. Don’t lean over battery when attaching clamps or allow the clamps to touch each other. If acid splashes in eyes or on skin, flush contaminated area immediately with large quantities of water. A battery generates hydrogen gas which is flam- mable and explosive. Keep flame or spark away from the vent holes. 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.

1. Remove all metal jewelry such as watch bands or bracelets which might make an unintended electrical contact.

372 WHAT TO DO IN EMERGENCIES

2. Park the booster vehicle within cable reach but with- out letting the vehicles touch. Set the parking brake on both vehicles, shift the automatic transmission into PARK, or the manual transmission into NEUTRAL, and turn the ignition OFF. 3. Turn off the heater, radio, and all unnecessary electri- cal loads. 4. Connect one end of a jumper cable to the positive terminal of the booster battery. Connect the other end of the same cable to the positive terminal of the discharged battery.

WARNING!

Do not permit vehicles to touch each other as this could establish a ground connection and personal injury could result.

5. Connect the other cable, first to the negative terminal of the booster battery and then to 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.

WARNING!

Any procedure other than above could result in: 1. Personal injury caused by electrolyte squirting out the battery vent; 2. Personal injury or property damage due to battery explosion; 3. Damage to charging system of booster vehicle or of immobilized vehicle.

WHAT TO DO IN EMERGENCIES 373

WARNING!

or towing.

• You should not try to start your vehicle by pushing • Do not connect the cable to the negative post of the discharge battery. The resulting electrical spark could cause the battery to explode. • During cold weather when temperatures are be- low freezing point, electrolyte in a discharged battery may freeze. Do not attempt jump starting because the battery could rupture or explode. The battery temperature must be brought up above freezing point before attempting jump start.

374 WHAT TO DO IN EMERGENCIES

EMERGENCY TOW HOOKS — IF EQUIPPED If your vehicle is equipped with tow hooks, they are mounted in the front and the rear.

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. Tow straps are recommended when towing the vehicle, chains may cause vehicle damage.

WARNING!

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.

MAINTAINING YOUR VEHICLE

CONTENTS

䡵 Engine Compartment – 3.8L . . . . . . . . . . . . . . . 378
䡵 Onboard Diagnostic System — OBD II . . . . . . . . 379
▫ Loose Fuel Filler Cap Message . . . . . . . . . . . . 380

䡵 Emissions Inspection And Maintenance

Programs

. . . . . . . . . . . . . . . . . . . . . . . . . . . . 380
䡵 Replacement Parts . . . . . . . . . . . . . . . . . . . . . . 382
䡵 Authorized Dealer Service . . . . . . . . . . . . . . . . 382
䡵 Maintenance Procedures . . . . . . . . . . . . . . . . . . 383
. . . . . . . . . . . . . . . . . . . . . . . . . . 383

▫ Engine Oil

▫ Drive Belts — Check Condition And Tension . . 386
▫ Spark Plugs . . . . . . . . . . . . . . . . . . . . . . . . . 386
▫ Catalytic Converter . . . . . . . . . . . . . . . . . . . . 386
▫ Crankcase Emission Control System . . . . . . . . 388
▫ Fuel Filter . . . . . . . . . . . . . . . . . . . . . . . . . . 388
▫ Engine Air Cleaner Filter . . . . . . . . . . . . . . . . 389
▫ Maintenance-Free Battery . . . . . . . . . . . . . . . . 389
▫ Air Conditioner Maintenance . . . . . . . . . . . . . 390
▫ Power Steering Fluid Check . . . . . . . . . . . . . . 391

376 MAINTAINING YOUR VEHICLE

▫ Driveline And Steering Component

Lubrication . . . . . . . . . . . . . . . . . . . . . . . . . . 392
▫ Body Lubrication . . . . . . . . . . . . . . . . . . . . . 392
▫ Windshield Wiper Blades . . . . . . . . . . . . . . . . 392
▫ Windshield And Rear Window Washers . . . . . 393
▫ Exhaust System . . . . . . . . . . . . . . . . . . . . . . 393
▫ Cooling System . . . . . . . . . . . . . . . . . . . . . . . 394
▫ Hoses And Vacuum/Vapor Harnesses . . . . . . . 399
▫ Brake System . . . . . . . . . . . . . . . . . . . . . . . . 399
▫ Automatic Transmission . . . . . . . . . . . . . . . . 401
▫ Hydraulic Clutch Fluid — Manual

Transmission . . . . . . . . . . . . . . . . . . . . . . . . 403
▫ Manual Transmission . . . . . . . . . . . . . . . . . . 403
▫ Transfer Case . . . . . . . . . . . . . . . . . . . . . . . . 404

▫ Front/Rear Axle Fluid . . . . . . . . . . . . . . . . . . 405
▫ Maintenance After Off-Road Driving . . . . . . . . 405
▫ Appearance Care And Protection From

Corrosion . . . . . . . . . . . . . . . . . . . . . . . . . . . 406
䡵 Fuses (Totally Integrated Power Module) . . . . . . 413
䡵 Vehicle Storage . . . . . . . . . . . . . . . . . . . . . . . . 419
䡵 Replacement Bulbs — If Equipped . . . . . . . . . . . 420
䡵 Bulb Replacement . . . . . . . . . . . . . . . . . . . . . . 420
▫ Head Light . . . . . . . . . . . . . . . . . . . . . . . . . . 420
▫ Front Park/Turn Signal . . . . . . . . . . . . . . . . . 421
▫ Front Side Marker . . . . . . . . . . . . . . . . . . . . . 422
▫ Front Fog Light . . . . . . . . . . . . . . . . . . . . . . 422
▫ Rear Tail, Stop, Turn Signal, And Backup

Lights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 422

▫ Center High-Mounted Stop Light (CHMSL) . . . 423
䡵 Fluid Capacities . . . . . . . . . . . . . . . . . . . . . . . . 424
䡵 Fluids, Lubricants And Genuine Parts . . . . . . . . 424

MAINTAINING YOUR VEHICLE 377

▫ Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 424
▫ Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . 425

378 MAINTAINING YOUR VEHICLE

ENGINE COMPARTMENT – 3.8L

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 authorized dealer for service as soon as possible.

MAINTAINING YOUR VEHICLE 379

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 drivability. 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.

380 MAINTAINING YOUR VEHICLE

Loose Fuel Filler Cap Message After fuel is added, the vehicle diagnostic system can determine if the fuel filler cap is possibly loose, improp- erly installed, or damaged. A “gASCAP” message will be displayed in the odometer. Tighten the gas cap until a ⬙clicking⬙ sound is heard. This is an indication that the gas cap is properly tightened. Press the odometer reset button to turn the message off. If the problem persists, the message will appear the next time the vehicle is started. This might indicate a damaged cap. If the prob- lem is detected twice in a row, the system will turn on the “Malfunction Indicator Light.” Resolving the problem will turn the “Malfunction Indicator Light.” off.

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 that require an Inspection and Mainte- nance (I/M), this check verifies the Malfunction Indicator Light (MIL) is functioning and is not on when the engine is running, and that the OBD II system is ready for testing. Normally, the OBD II system will be ready. The OBD II system may not be ready if your vehicle was recently serviced, recently had a dead battery, or a battery replace- ment. If the OBD II 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 II 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 the 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

MAINTAINING YOUR VEHICLE 381

the ignition key or start the engine. This means that your vehicle’s OBD II 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 II system is ready , and you can proceed to the I/M station.

If your OBD II 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 II 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 II system is ready or not ready, if the MIL is illuminated during normal vehicle operation, you should have your vehicle

382 MAINTAINING YOUR VEHICLE

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

NOTE: systems can result against you.

Intentional tampering with emissions control in civil penalties being assessed

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

AUTHORIZED DEALER SERVICE Your authorized dealer has the qualified service person- nel, 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 Service manuals before attempting any procedure yourself.

WARNING!

You can be badly injured working on or around a motor vehicle. Only do 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.

MAINTAINING YOUR VEHICLE 383

Checking the oil while the vehicle is on level ground will improve the accuracy of the oil level readings. Always maintain the oil level within the SAFE zone on the dipstick. Adding 1 U.S. Quart (0.95L) of oil when the reading is at the bottom of the SAFE zone will result in a reading at the top of the safe zone on these engines.

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 lubrication of your vehicle’s engine, the engine oil must be maintained at the correct level. The best time to check the engine oil level is about five minutes after a fully warmed up engine is shut off or before starting the engine after it has sat overnight.

384 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 Refer to the Maintenance Schedule in Section 8 for recommended engine oil change intervals. 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.

Engine Oil Viscosity (3.8L Engines) SAE 5W-20 engine oil is recommended for all operating temperatures. This engine oil improves low temperature starting and vehicle fuel economy. The engine oil filler cap also shows the recommended engine oil viscosity for your engine. For information on engine oil filler cap location, refer to the “Engine Com- partment” illustration in this section.

Lubricants which do not have both, the engine oil certi- fication mark and the correct SAE viscosity grade num- ber, should not be used. Synthetic Engine Oils Synthetic engine oils can be used if the recommended oil quality requirements are met, and the recommended maintenance intervals for oil and filter changes are followed. 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 its performance may be impaired by supplemental addi- tives. Disposing of Used Engine Oil Care should be taken in disposing of used engine oil from your vehicle. Used oil, indiscriminately discarded, can present a problem to the environment. Contact your

MAINTAINING YOUR VEHICLE 385

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 at every engine 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. MOPAR威 engine oil filters are high quality oil filters and are recommended.

386 MAINTAINING YOUR VEHICLE

Drive Belts — Check Condition and Tension Belt tension is controlled by means of an automatic tensioner. No belt tension adjustments are required. However, belt and belt tensioner condition should be inspected at the specified intervals, and replaced if re- quired. See your authorized dealer for service At the mileage indicated in the Maintenance Schedule, the condition of all the belts and tensioner should be checked. Refer to Section 8 of this manual. Improper belt tension can cause belt slippage and failure. Belts should be inspected for evidence of cuts, cracks, glazing, or frayed cords and replaced if there is indication of damage, which could result in belt failure. Low generator belt tension can cause battery failure. Also, check belt routing to make sure there is no inter- ference between the belts and other engine components.

Spark Plugs Spark plugs must fire properly to assure engine perfor- mance and emission control. New plugs should be in- stalled at the mileage specified in the Maintenance Sched- ule. Refer to Section 8 of this manual. The entire set should be replaced if there is any malfunction due to a faulty spark plug. Refer to Fluids, Lubricants, and Genu- ine Parts in this section 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.

CAUTION!

WARNING!

MAINTAINING YOUR VEHICLE 387

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 exhaust system. Do not park or operate your vehicle in areas where your exhaust system can contact anything 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.

388 MAINTAINING YOUR VEHICLE

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.

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.

Engine Air Cleaner Filter Refer to the Maintenance Schedule in Section 8 for recommended engine air cleaner filter change intervals.

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 compartment 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.

MAINTAINING YOUR VEHICLE 389

WARNING!

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

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 before connecting the charger to battery. Do not use a “fast charger” to provide starting voltage.

390 MAINTAINING YOUR VEHICLE

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.

WARNING!

• Use only refrigerants and compressor lubricants approved by the manufacturer for your air condi- tioning system. Some unapproved refrigerants are flammable and can explode, injuring you. Other unapproved refrigerants or lubricants can cause the system to fail, requiring costly repairs. Refer to Section 3 of the Warranty Information Book for further warranty information. • The air conditioning system contains refrigerant under high pressure. To avoid risk of personal injury or damage to the system, adding refrigerant or any repair requiring lines to be disconnected should be done by an experienced repairman.

NOTE: Use only manufacturer approved A/C System Sealers, Stop Leak Products, Seal Conditioners, Compres- sor Oil, and Refrigerants. Refrigerant Recovery and Recycling R-134a Air Conditioning Refrigerant is a hydrofluoro- carbon (HFC) that is endorsed by the Environmental Protection Agency (EPA) and is an ozone-saving product. However, the manufacturer recommends that air condi- tioning service be performed by authorized dealers or other service facilities using recovery and recycling equipment. 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 an autho- rized DaimlerChrysler Dealership.

MAINTAINING YOUR VEHICLE 391

WARNING!

Fluid level should be checked on a level surface with the engine off to prevent injury from moving parts, and to ensure accurate fluid level reading. Do not overfill. Use only the manufacturer’s recommended power steering 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 Fluids, Lubricants, and Genuine Parts in this section for correct fluid type. NOTE: Upon initial start-up in cold weather, the power steering pump may make noise for a short period of time. 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.

392 MAINTAINING YOUR VEHICLE

Driveline And Steering Component Lubrication All driveline and steering components are sealed and do not require lubrication. Driveshafts are not serviceable. 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 ensure 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 Clean the rubber edges of the wiper blades and the windshield periodically with a sponge or soft cloth and a mild non-abrasive cleaner. This will remove accumula- tions 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 remove frost or ice from the windshield. Keep the blade rubber out of contact with petroleum products such as engine oil, gasoline, etc.

Windshield And Rear Window Washers The fluid reservoir for the windshield washers and the rear window washer (if equipped) is shared. The fluid reservoir is located in the engine compartment. Be sure to check the fluid level at regular intervals. Fill the reservoir with windshield washer solvent only (not radiator anti- freeze). When refilling the washer fluid reservoir, take some washer fluid and apply it to a cloth or towel and wipe clean the wiper blades, this will help blade perfor- mance. To prevent freeze-up of your windshield washer system in cold weather, select a solution or mixture that meets or exceeds the temperature range of your climate. This rating information can be found on most washer fluid containers.

MAINTAINING YOUR VEHICLE 393

WARNING!

Commercial windshield washer solvents are flam- mable. 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

394 MAINTAINING YOUR VEHICLE

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 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 (if equipped) or radiator for any accumulation of bugs, leaves, etc. If dirty, clean by gently spraying water from a garden hose vertically down the face of the A/C con- denser (if equipped) or the back of the radiator core. 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 antifreeze/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 RE- MOVE THE COOLANT PRESSURE CAP WHEN THE COOLING SYSTEM IS HOT.

Cooling System — Drain, Flush, And Refill The cooling system should be drained, flushed, and refilled, at the intervals shown on the Maintenance Schedule. Refer to Section 8 of this manual. 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. Discard old antifreeze/coolant solution according to rec- ommended procedure. Selection Of Engine Coolant Use only the manufacturer’s recommended antifreeze/ coolant. Refer to Fluids, Lubricants, and Genuine Parts in this section for correct antifreeze/coolant type.

MAINTAINING YOUR VEHICLE 395

CAUTION!

If

a non-HOAT antifreeze/coolant

• Mixing of antifreeze/coolants other than the speci- fied HOAT antifreeze/coolants, may result in en- gine damage and may decrease corrosion protec- tion. is introduced into the cooling system in an emer- gency, it should be replaced with the specified antifreeze/coolant as soon as possible. • 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/coolants. Use of Propylene Glycol base antifreeze/coolants is not recommended.

396 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
mi (160 000 km) before replacement. To prevent reducing this extended 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 Technology (HOAT) antifreeze/coolant. When adding antifreeze/coolant: • The manufacturer

recommends using MOPAR威 Antifreeze/Coolant 5 Year/100,000 Mile Formula HOAT (Hybrid Organic Additive Technology). • Mix a minimum solution of 50% HOAT engine coolant and distilled water. Use higher concentrations (not to exceed 70%) if temperatures below -34°F (-37°C) are anticipated.

• Use only high purity water such as distilled or deion- ized water when mixing the water/engine coolant 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 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 ensure that antifreeze/coolant will return to the radiator from the coolant reserve tank.

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

WARNING!

The warning words DO NOT OPEN HOT on the cooling system pressure cap are a safety precaution. Never add 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-