2013 Jeep Wrangler Owners Manual

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the tire. 498 STARTING AND OPERATING Premium and Base TPM 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. NOTE: It is particularly important for you to check the tire pressure in all of your tires regularly and to maintain the proper pressure. 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 , a “LOW illuminate in the instrument cluster, TIRE PRESSURE” message will display in the EVIC, and an audible 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 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 20 minutes above 15 mph (24 km/h) to receive this information. 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: Base Tire Pressure Monitoring Vehicles not equipped with EVIC will inform the driver which tire(s) are low but not provide actual tire pressure. The low tire ISO telltale will illuminate along with “LoTIrE” message displayed in the ODO and then it will scroll to which tire location is lower than the Placard Value. STARTING AND OPERATING 499 Tire location will be displayed as follows: LF = Left Front rF = right Front Lr = Left rear rr = right rear Premium Tire Pressure Monitoring Vehicles equipped with a EVIC will display specific tire pressure information. When tire pressure is low the low tire ISO telltale will illuminate and the EVIC will display actual individual tire pressure when the tire pressure is lower than the Placard Value. 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. 500 STARTING AND OPERATING 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. NOTE: • If your vehicle is equipped with a matching 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 20 minutes above 15 mph (24 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 threshold. • If your vehicle is not equipped with a matching 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 20 minutes above 15 mph (24 km/h), the “Tire Pressure Monitor- ing 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 Tell- tale Light” will turn OFF, as long as no tire pressure is below the low-pressure warning limit in any of the four active road tires. The vehicle may need to be driven for up to 20 minutes above 15 mph (24 km/h) in order for the TPMS to receive this information. Premium System – If Equipped 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. NOTE: It is particularly important, for you to regularly check the tire pressure in all of your tires and to maintain the proper pressure. STARTING AND OPERATING 501 The Tire Pressure Monitor System (TPMS) consists of the following components: • Receiver Module • Four Tire Pressure Monitoring Sensors • Various Tire Pressure Monitoring System Messages, which display in the Electronic Vehicle Information Center (EVIC), and a graphic displaying tire pressures • 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. 502 STARTING AND OPERATING Tire Pressure Monitoring Low Pressure Warnings 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. In addition, the EVIC will display a “LOW TIRE PRESSURE” message for a minimum of five seconds, and a graphic display of the pressure value(s) with the low tire(s) “flashing.” Refer to “Electronic Vehicle Information Center (EVIC)” in “Un- derstanding Your further information. Instrument Panel” for NOTE: Your system can be set to display pressure units in PSI, kPa, or BAR. Should a low tire condition occur on any of the four active road tire(s), you should stop as soon as possible, and inflate the low tire(s) that is “flashing” on the graphic display to the vehicle’s recommended cold tire pressure. STARTING AND OPERATING 503 NOTE: Your system can be set to display pressure units in PSI, kPa, or BAR. The system will automatically update, the graphic dis- play of the pressure value(s) will stop “flashing,” and the Tire Pressure Monitoring Telltale Light will extinguish once the updated tire pressure(s) have been received. The vehicle may need to be driven for up to 20 minutes above 15 mph (24 km/h) to receive this information. SERVICE TPM SYSTEM Warning The “Tire Pressure Monitoring Telltale Light” will flash on and off for 75 seconds, and remain on solid when a system fault is detected. The system fault will also sound a chime. The EVIC will display a “SERVICE TPM SYS- TEM” message for a minimum of five seconds. This message is then followed by a graphic display, with “- -“ in place of the pressure value(s), indicating which Tire Pressure Monitoring Sensor(s) is not being received. 504 STARTING AND OPERATING If the ignition switch is cycled, this sequence will repeat, providing the system fault still exists. If the system fault no longer exists, the “Tire Pressure Monitoring Telltale Light” will no longer flash, the ⬙SERVICE TPM SYSTEM⬙ message will not be present, and a pressure value will be displayed instead of dashes. A system fault can occur by any of the following: 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. The EVIC will also display a ⬙SERVICE TPM SYSTEM⬙ message for a minimum of five seconds when a system fault is detected possibly related to an incorrect sensor location fault. In this case, the ⬙SERVICE TPM SYSTEM⬙ message is then followed by a graphic display, with pressure values still shown. This indicates the pressure values are still being received from the TPM Sensors but they may not be located in the correct vehicle position. However, the system still needs to be serviced as long as the ⬙SERVICE TPM SYSTEM⬙ message exists. NOTE: • If your vehicle is equipped with a matching 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 switch cycle will still show the “Tire Pressure Monitoring Telltale Light” to be ON, a chime to sound, a “LOW TIRE PRESSURE” message to appear in the EVIC, and the graphic display will still show the low tire pressure value “flashing.” Driving the vehicle for up to 20 minutes above 15 mph (24 km/h) will turn OFF the “Tire Pressure Monitoring Telltale Light” as long as none of road tires are below the low pressure warning threshold. • If your vehicle is not equipped with a matching 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 switch cycle, the “Tire Pressure Monitoring Telltale Light” will remain ON, a chime will sound, and the EVIC will still display a “flashing” pressure value in the graphic display. After driving the vehicle for up to 20 minutes above 15 mph (24 km/h), the “Tire Pressure Monitoring Telltale Light” will flash on and off for 75 seconds and then remain on solid. STARTING AND OPERATING 505 In addition, the EVIC will display a “SERVICE TPM SYSTEM⬙ message for a minimum of five seconds and then display dashes (- -) in place of the pressure value. For each subsequent ignition switch cycle, a chime will sound, the “Tire Pressure Monitoring Telltale Light” will flash on and off for 75 seconds and then remain on solid, and the EVIC will display a ⬙SERVICE TPM SYSTEM⬙ message for a minimum of five seconds and then display dashes (- -) in place of the pressure value. 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. In addition, the “Tire Pressure Monitoring Telltale Light” will turn OFF and the graphic in the EVIC will display a new pressure value instead of dashes (- -), as long as no tire pressure is below the low-pressure warning limit in any of the four active road tires. The vehicle may need to be driven for up to 20 minutes above 15 mph (24 km/h) in order for the TPMS to receive this information. 506 STARTING AND OPERATING 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 Canada MRXC4W4MA4 2546A-C4W4MA4 FUEL REQUIREMENTS 3.6L Engine This engine is designed to meet all emis- sions regulations and provide excellent fuel economy and performance when using high-quality unleaded “regular” gasoline having an octane rating of 87. The use of premium gasoline is not recommended, as it will not provide any benefit over regular gasoline in these engines. 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 experi- ence these symptoms, try another brand of gasoline before considering service for the vehicle. Over 40 auto manufacturers worldwide have issued and endorsed consistent gasoline specifications (the World- wide Fuel Charter, WWFC) which define fuel properties necessary to deliver enhanced emissions, performance, and durability for your vehicle. The manufacturer recom- mends the use of gasolines that meet 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 gasolines contain oxygenates and are specifi- cally blended to reduce vehicle emissions and improve air quality. The manufacturer supports the use of reformulated gaso- lines. Properly blended reformulated gasolines will pro- vide excellent performance and durability of engine and fuel system components. STARTING AND OPERATING 507 Gasoline/Oxygenate Blends Some fuel suppliers blend unleaded gasoline with oxy- genates such as Ethanol. Fuels blended with oxygenates may be used in your vehicle. CAUTION! DO NOT use gasoline containing Methanol or gaso- line containing more than 10% Ethanol. Use of these blends may result in starting and driveability prob- lems, damage critical fuel system components, cause emissions to exceed the applicable standard, and/or cause the “Malfunction Indicator Light” to illumi- nate. Pump labels should clearly communicate if a fuel contains greater than 10% Ethanol. Problems that result from using gasoline containing Methanol or gasoline containing more than 10% Ethanol are not the responsibility of the manufacturer and may not be covered under warranty. 508 STARTING AND OPERATING E-85 Usage In Non-Flex Fuel Vehicles Non-FFV vehicles are compatible with gasoline contain- ing 10% ethanol (E10). Gasoline with higher ethanol content may void the vehicle’s warranty. If a Non-FFV vehicle is inadvertently fueled with E-85 fuel, the engine will have some or all of these symptoms: • operate in a lean mode • OBD II “Malfunction Indicator Light” on • poor engine performance • poor cold start and cold drivability • increased risk for fuel system component corrosion To fix a Non-FFV vehicle inadvertently fueled once with E-85 perform the following: • drain the fuel tank (see your authorized dealer) • change the engine oil and oil filter • disconnect and reconnect engine controller memory the battery to reset the More extensive repairs will be required for prolonged exposure to E-85 fuel. MMT In Gasoline MMT is a manganese-containing metallic additive that is blended into some gasoline to increase octane. Gasoline blended with MMT provides no performance advantage beyond gasoline of the same octane number without MMT. Gasoline blended with MMT reduces spark plug life and reduces emissions system performance in some vehicles. The manufacturer recommends that gasoline without MMT be used in your vehicle. The MMT content of gasoline may not be indicated on the gasoline pump, therefore, you should ask your gasoline retailer whether the gasoline contains MMT. 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 and Califor- nia 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 is not needed under normal conditions and they 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 gas is prohibited by Federal law. Using leaded gasoline can impair engine perfor- mance and damage the emissions control system. (Continued) STARTING AND OPERATING 509 CAUTION! (Continued) • 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 metha- nol. Fuel system damage or vehicle performance problems resulting from the use of such fuels or additives is not the responsibility of the manufac- turer. NOTE: Intentional tampering with the emissions control system can result in civil penalties being assessed against you. 510 STARTING AND OPERATING Carbon Monoxide Warnings WARNING! Carbon monoxide (CO) in exhaust gases is deadly. Follow the precautions below to prevent carbon monoxide poisoning: • 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. (Continued) WARNING! (Continued) • Guard against carbon monoxide with proper main- tenance. 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. 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. STARTING AND OPERATING 511 CAUTION! (Continued) cap (gas cap). A poorly fitting cap could let impu- rities into the fuel system. Also, a poorly fitting aftermarket cap can cause the “Malfunction Indi- cator Light (MIL)” to illuminate, due to fuel vapors escaping from the system. • To avoid fuel spillage and overfilling, do not “top off” the fuel tank after filling. WARNING! • Never have any smoking materials lit in or near the vehicle when the gas cap is removed or the tank is being filled. • Never add fuel when the engine is running. This is in violation of most state and federal fire regula- tions and may cause the MIL to turn on. Fuel Filler Cap CAUTION! • Damage to the fuel system or emission control system could result from using an improper fuel (Continued) (Continued) 512 STARTING AND OPERATING WARNING! (Continued) • 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. is full. NOTE: • When the fuel nozzle “clicks” or shuts off, the fuel tank • Tighten the gas cap about 1/4 turn until you hear one click. This is an indication that the cap is properly tightened. • If the gas cap is not tightened properly, the MIL will come on. Be sure the gas cap is tightened every time the vehicle is refueled. Loose Fuel Filler Cap Message 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 MIL. Resolving the problem will turn the MIL off. 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 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 and cargo. The label also specifies maximum capacities of front and STARTING AND OPERATING 513 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 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 vehi- cle’s GVWR. 514 STARTING AND OPERATING Tire Size The tire size on the Vehicle Certification 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. 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 insure that the GVWR has not been exceeded. 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 the front and rear axle. Weigh- ing the vehicle may show that the GAWR of either 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 effect 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. STARTING AND OPERATING 515 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 review this information to tow your load as efficiently and safely as possible. To maintain warranty coverage, follow the requirements and recommendations in this manual concerning ve- hicles used for trailer towing. Common Towing Definitions The following trailer towing related definitions will assist 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 tongue weight. The total load must be limited so that you do not 516 STARTING AND OPERATING exceed the GVWR. Refer to “Vehicle Loading/Vehicle Certification Label” in “Starting and Operating” for further information. 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. Gross Combination Weight Rating (GCWR) The GCWR is the total permissible weight of your vehicle and trailer when weighed in combination. NOTE: The GCWR rating includes 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. Refer to “Vehicle Loading/Vehicle Certification Label” in “Starting and Operating” for further information. 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 a collision. Tongue Weight (TW) The 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 multiplied by the maximum width of the front of a trailer. Trailer Sway Control – If Equipped 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. These kinds of hitches are the most popular on the market today and they are commonly used to tow small- and medium- sized trailers. STARTING AND OPERATING 517 Weight-Distributing Hitch A weight-distributing system works by applying lever- age through spring (load) bars. They are 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 manufacturer’s directions, it pro- vides 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. 518 STARTING AND OPERATING WARNING! • An improperly adjusted Weight Distributing Hitch system may reduce handling, stability, braking performance, and could result in a collision. • Weight Distributing Systems may not be compatible with Surge Brake Couplers. Consult with your hitch and trailer manufacturer or a reputable Recreational Vehicle dealer for additional information. 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. Trailer Hitch Classification Definitions Class Max. Trailer Hitch Industry Standards 2,000 lbs (907 kg) 3,500 lbs (1 587 kg) 5,000 lbs (2 268 kg) 10,000 lbs (4 540 kg) Class I - Light Duty Class II - Medium Duty Class III - Heavy Duty Class IV - Extra Heavy Duty Refer to the “Trailer Towing Weights (Maximum Trailer Weight Ratings)” chart for the Maximum Gross Trailer Weight (GTW) towable for your given drivetrain. 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. STARTING AND OPERATING 519 Engine/ Transmission Axle Model 3.6L/Manual 3.21 3.6L/Manual 3.73 3.6L/ Automatic 3.73 Two–Door Sport Model (4WD) Two–Door Sport Model (4WD) Two–Door Sport Model (4WD) GCWR (Gross Combined Wt. Rating) 5,329 lbs (2 417 kg) 6,329 lbs (2 871 kg) 6,353 lbs (2 881 kg) Frontal Area 25 sq ft (2.32 sq m) 25 sq ft (2.32 sq m) 25 sq ft (2.32 sq m) Max. GTW (Gross Trailer Wt.) Max. Trailer Tongue Wt. (See Note) 1,000 lbs (453 kg) 2,000 lbs (907 kg) 2,000 lbs (907 kg) 100 lbs (45 kg) 200 lbs (91 kg) 200 lbs (91 kg) 520 STARTING AND OPERATING Engine/ Transmission Axle Model 3.6L/Manual 3.21 3.6L/Manual 3.73 3.6L/ Automatic 3.73 3.6L/Manual 4.10 Two–Door Sahara Model (4WD) Two–Door Sahara Model (4WD) Two–Door Sahara Model (4WD) 2–Door Rubicon Model (4WD) GCWR (Gross Combined Wt. Rating) 5,430 lbs (2 463 kg) 6,430 lbs (2 916 kg) 6,454 lbs (2 927 kg) 6,507 lbs (2 951 kg) Frontal Area Max. GTW (Gross Trailer Wt.) Max. Trailer Tongue Wt. (See Note) 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) 2,000 lbs (907 kg) 100 lbs (45 kg) 200 lbs (91 kg) 200 lbs (91 kg) 200 lbs (91 kg) Engine/ Transmission Axle Model 3.6L/ Automatic 4.10 3.6L/Manual 3.21 3.6L/Manual 3.73 3.6L/ Automatic 3.73 Two–Door Rubicon Model (4WD) Four–Door Sport Model (4WD) Four–Door Sport Model (4WD) Four–Door Sport Model (4WD) GCWR (Gross Combined Wt. Rating) 6,533 lbs (2 963 kg) 5,742 lbs (2 604 kg) 8,242 lbs (3 738 kg) 8,257 lbs (3 745 kg) STARTING AND OPERATING 521 Max. GTW (Gross Trailer Wt.) Max. Trailer Tongue Wt. (See Note) 2,000 lbs (907 kg) 1,000 lbs (453 kg) 200 lbs (91 kg) 100 lbs (45 kg) Frontal Area 25 sq ft (2.32 sq m) 32 sq ft (2.97 sq m) 32 sq ft (2.97 sq m) 3,500 lbs (1 587 kg) 32 sq ft (2.97 sq m) 3,500 lbs (1 587 kg) 350 lbs (159 kg) 350 lbs (159 kg) 522 STARTING AND OPERATING Engine/ Transmission Axle Model 3.6L/Manual 3.21 3.6L/Manual 3.73 3.6L/ Automatic 3.73 3.6L/Manual 4.10 Four–Door Sahara Model (4WD) Four–Door Sahara Model (4WD) Four–Door Sahara Model (4WD) Four–Door Rubicon Model (4WD) GCWR (Gross Combined Wt. Rating) 5,782 lbs (2 623 kg) 8,282 lbs (3 757 kg) 8,297 lbs (3 763 kg) 8,406 lbs (3 813 kg) Frontal Area 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) Max. GTW (Gross Trailer Wt.) 1,000 lbs (453 kg) 3,500 lbs (1 587 kg) 3,500 lbs (1 587 kg) 3,500 lbs (1 587 kg) Max. Trailer Tongue Wt. (See Note) 100 lbs (45 kg) 350 lbs (159 kg) 350 lbs (159 kg) 350 lbs (159 kg) Engine/ Transmission Axle Model 3.6L/ Automatic 4.10 Four–Door Rubicon Model (4WD) STARTING AND OPERATING 523 GCWR (Gross Combined Wt. Rating) 8,431 lbs (3 824 kg) Frontal Area 32 sq ft (2.97 sq m) Max. GTW (Gross Trailer Wt.) 3,500 lbs (1 587 kg) Max. Trailer Tongue Wt. (See Note) 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 (ie. the GVWR), and the GVWR should never exceed the weight referenced on the Tire and Loading Information placard. Refer to “Tire Safety Information” in “Starting and Operating” for further information. 524 STARTING AND OPERATING Trailer And 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 the vehicle and trailer. Failure to load trailers heavier in front is the cause of many trailer collisions. Never exceed the maximum tongue weight stamped on your bumper or trailer hitch. Consider the following items when computing the weight on the rear axle of the vehicle: • The tongue weight of the trailer. • 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 dealer-installed options must be considered as part of the total load on your vehicle. Refer to the “Tire and Loading Information” placard for the maximum combined weight of occupants and cargo for your vehicle. Towing Requirements To promote proper break-in of your new vehicle drive- train components, the following guidelines are recom- mended: NOTE: Trailer towing requires special rear axle lubri- cant. Refer to “Fluids, Lubricants, and Genuine Parts” in “Maintaining Your Vehicle” for the correct fluid type. STARTING AND OPERATING 525 CAUTION! • Do not tow a trailer at all during the first 500 miles (805 km) the new vehicle is driven. The engine, axle or other parts could be damaged. • Then, during the first 500 miles (805 km) that a trailer is towed, do not drive over 50 mph (80 km/h) and do not make starts at full throttle. This helps the engine and other parts of the vehicle wear in at the heavier loads. 526 STARTING AND OPERATING WARNING! Improper towing can lead to a collision. 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 a collision. • When hauling cargo or towing a trailer, do not overload your vehicle or trailer. Overloading can cause a loss of control, poor performance or dam- age to the brakes, axle, engine, transmission, steer- ing, suspension, chassis structure or tires. WARNING! (Continued) • 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 transmis- sion, shift the transmission into first gear. And with four-wheel-drive vehicles, make sure the transfer case is not in N (Neutral). Always, block or ⴖchockⴖ the trailer wheels. • GCWR must not be exceeded. (Continued) (Continued) WARNING! (Continued) • 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). STARTING AND OPERATING 527 Towing Requirements – Tires – Proper tire inflation pressures are essential to the safe and satisfactory operation of your vehicle. Refer to “Tires – General Information” in “Starting and Oper- ating” for proper tire inflation procedures. – Check the trailer tires for proper tire inflation pressures before trailer usage. – Check for signs of tire wear or visible tire damage before towing a trailer. Refer to “Tires – General Information” in “Starting and Operating” for proper inspection procedure. – When replacing tires, refer to “Tires – General Infor- mation” in “Starting and Operating” for proper tire replacement procedures. Replacing tires with a higher load carrying capacity will not increase the vehicle’s GVWR and GAWR limits. 528 STARTING AND OPERATING 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. • 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 system and cause it to fail. You might not have brakes when you need them and could have a collision. • 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 a collision. Towing Requirements – Trailer Lights And 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 four–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 529 Four-Pin Connector 1 — Female Pins 2 — Male Pin 3 — Ground 4 — Park 5 — Left Stop/Turn 6 — Right Stop/Turn 530 STARTING AND OPERATING Towing Tips Before setting out on a trip, practice turning, stopping and backing the trailer in an area away from heavy traffic. If using a manual transmission vehicle for trailer towing, all starts must be in first gear to avoid excessive clutch slippage. Automatic Transmission – If Equipped The DRIVE range can be selected when towing. How- ever, if frequent shifting occurs while in this range, use the Electronic Range Select (ERS) shift control to select a lower gear range. NOTE: Using a lower gear range while operating the vehicle under heavy loading conditions will improve performance and extend transmission life by reducing excessive shifting and heat buildup. This action will also provide better engine braking. If you REGULARLY tow a trailer for more than 45 min- utes of continuous operation, then change the transmis- sion fluid and filter as specified for ⬙police, taxi, fleet, or trailer towing.⬙ Refer to the “Maintenance frequent Schedule” for the proper maintenance intervals. NOTE: Check the automatic transmission fluid level before towing. Electronic Speed Control – If Equipped • Do not 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. STARTING AND OPERATING 531 Cooling System To reduce potential for engine and transmission over- heating, take the following actions: City Driving When stopped for short periods of time, shift the trans- mission into NEUTRAL and increase engine idle speed. Highway Driving Reduce speed. Air Conditioning Turn off temporarily. 532 STARTING AND OPERATING RECREATIONAL TOWING (BEHIND MOTORHOME, ETC.) Towing This Vehicle Behind Another Vehicle Towing Condition Flat Tow Wheels OFF the Ground NONE Dolly Tow On Trailer Front Rear ALL See Instructions Four-Wheel Drive Models • Automatic transmission in PARK • Manual transmission in gear (NOT in N NEUTRAL) • Transfer case in NEUTRAL (N) • Tow in forward direction NOT ALLOWED NOT ALLOWED OK Recreational Towing – Four-Wheel Drive Models NOTE: The transfer case must be shifted into NEUTRAL (N), automatic transmission must be shifted into PARK, and manual transmission must be placed in gear (NOT in NEUTRAL) for recreational towing. CAUTION! • Front or rear wheel lifts should not be used. Inter- nal damage to the transmission or transfer case will occur if a front or rear wheel lift is used when recreational towing. • Tow only in the forward direction. Towing this vehicle backwards can cause severe damage to the transfer case. • Automatic transmissions must be placed in the PARK position for recreational towing. (Continued) STARTING AND OPERATING 533 CAUTION! (Continued) • Manual transmissions must be placed in gear (not in Neutral) for recreational towing. • Before recreational towing, perform the procedure outlined under “Shifting Into NEUTRAL (N)” to be certain that the transfer case is fully in NEUTRAL (N). Otherwise, internal damage will result. • Towing this vehicle in violation of the above re- quirements can cause severe transmission and/or transfer case damage. Damage from improper tow- ing is not covered under the New Vehicle Limited Warranty. • Do not use a bumper-mounted clamp-on tow bar on your vehicle. The bumper face bar will be damaged. 534 STARTING AND OPERATING Shifting Into NEUTRAL (N) Use the following procedure to prepare your vehicle for recreational towing. WARNING! You or others could be injured if you leave the vehicle unattended with the transfer case in the NEUTRAL (N) position without first fully engaging the parking brake. The transfer case NEUTRAL (N) position disengages both the front and rear drive- shafts from the powertrain and will allow the vehicle to move, even if the transmission is in PARK. The parking brake should always be applied when the driver is not in the vehicle. CAUTION! It is necessary to follow these steps to be certain that the transfer case is fully in NEUTRAL (N) before recreational towing to prevent damage to internal parts. 1. Bring the vehicle to a complete stop. 2. Turn OFF the engine. 3. Press and hold the brake pedal. 4. Shift the automatic transmission into NEUTRAL or depress the clutch pedal on a manual transmission. 5. Shift the transfer case lever into NEUTRAL (N). 6. Start the engine. 7. Shift the transmission into REVERSE. 8. Release the brake pedal (and clutch pedal on manual transmissions) for five seconds and ensure that there is no vehicle movement. 9. Repeat Steps 7 and 8 with automatic transmission in DRIVE or manual transmission in first gear. 10. Turn OFF the engine. 11. Firmly apply the parking brake. 12. Shift the transmission into PARK or place manual transmission in gear (NOT in Neutral). STARTING AND OPERATING 535 CAUTION! Damage to the transmission may occur if the trans- mission is shifted into PARK with the transfer case in NEUTRAL (N) and the engine running. With the transfer case in NEUTRAL (N) ensure that the engine is OFF before shifting the transmission into PARK. 13. Attach the vehicle to the tow vehicle using a suitable tow bar. 14. Release the parking brake. 536 STARTING AND OPERATING Shifting Out of NEUTRAL (N) Use the following procedure to prepare your vehicle for normal usage. 1. Bring the vehicle to a complete stop, leaving it con- nected to the tow vehicle. 2. Firmly apply the parking brake. 3. Turn the ignition switch to the LOCK/OFF position. 4. Turn the ignition switch to the ON/RUN position, but do not start the engine. 5. Press and hold the brake pedal. 6. Shift the transmission into NEUTRAL. 7. Shift the transfer case lever to the desired position. NOTE: When shifting out of transfer case NEUTRAL (N), turning the engine OFF may be required to avoid gear clash. 8. Shift the automatic transmission into PARK, or place manual transmission in Neutral. 9. Release the brake pedal. 10. Disconnect vehicle from the tow vehicle. 11. Start the engine. 12. Press and hold the brake pedal. 13. Release the parking brake. 14. Shift the transmission into gear, release the brake pedal (and clutch pedal on manual transmissions), and check that the vehicle operates normally. WHAT TO DO IN EMERGENCIES CONTENTS 䡵 HAZARD WARNING FLASHERS . . . . . . . . . ..538 䡵 IF YOUR ENGINE OVERHEATS . . . . . . . . . . ..538 䡵 JACKING AND TIRE CHANGING . . . . . . . . ..540 ▫ Jack Location . . . . . . . . . . . . . . . . . . . . . . . .541 ▫ Spare Tire Stowage . . . . . . . . . . . . . . . . . . ..542 ▫ Preparations For Jacking . . . . . . . . . . . . . . ..542 ▫ Jacking Instructions . . . . . . . . . . . . . . . . . ..543 ▫ Road Tire Installation . . . . . . . . . . . . . . . . . ..547 䡵 JUMP-STARTING PROCEDURES. . . . . . . . . . ..548 ▫ Preparations For Jump-Start . . . . . . . . . . . . ..549 ▫ Jump-Starting Procedure . . . . . . . . . . . . . . ..550 䡵 FREEING A STUCK VEHICLE. . . . . . . . . . . . ..552 䡵 EMERGENCY TOW HOOKS — IF EQUIPPED . .554 䡵 SHIFT LEVER OVERRIDE . . . . . . . . . . . . . . ..554 䡵 TOWING A DISABLED VEHICLE . . . . . . . . . ..556 ▫ Without The Ignition Key . . . . . . . . . . . . . . ..557 ▫ Four–Wheel Drive Models . . . . . . . . . . . . . ..558 538 WHAT TO DO IN EMERGENCIES HAZARD WARNING FLASHERS The Hazard Warning flasher switch is located on the instrument panel below the climate controls. Press the switch to turn on the Hazard Warning flasher. When the switch is activated, all direc- tional turn signals will flash on and off to warn oncoming traffic of an emergency. Press the switch a second time to turn off the Hazard Warning flashers. This is an emergency warning system and it should not be used when the vehicle is in motion. Use it when your vehicle is disabled and it is creating a safety hazard for other motorists. When you must leave the vehicle to seek assistance, the Hazard Warning flashers will continue to operate even though the ignition is placed in the OFF position. NOTE: With extended use the Hazard Warning flashers 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 action. • On the highways — slow down. • In city traffic — while stopped, shift transmission into NEUTRAL, but do not increase engine idle speed. 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. NOTE: There are steps that you can take to slow down an impending overheat condition: • If your air conditioner (A/C) is on, turn it off. The A/C system adds heat to the engine cooling system and turning the A/C off can help remove this heat. WHAT TO DO IN EMERGENCIES 539 • You can also turn the temperature control to maximum heat, the mode control to floor and the blower 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. WARNING! You or others can be badly burned by hot engine coolant (antifreeze) or steam from your radiator. If you see or hear steam coming from under the hood, do not 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. 540 WHAT TO DO IN EMERGENCIES JACKING AND TIRE CHANGING 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 the danger of being hit when operating the jack or changing the wheel. • Being under a jacked-up vehicle is dangerous. The vehicle could slip off the jack and fall on you. You could be crushed. Never put 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. (Continued) WARNING! (Continued) • Never start or run the engine while the vehicle is on a jack. • The jack is designed to be used 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 Location The jack and lug wrench are located in the rear storage compartment. WHAT TO DO IN EMERGENCIES 541 NOTE: Turn the black plastic wing nut counter clock- wise to loosen the jack from the storage bin. Jack Storage Jack Wing Nut 542 WHAT TO DO IN EMERGENCIES 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. NOTE: If you have added aftermarket accessories to the 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 1. Park on a firm, level surface. Avoid ice or slippery areas. 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. 2. Turn on the Hazard Warning flasher. 3. Set the parking brake. 4. Shift the automatic transmission into PARK, or a manual transmission into REVERSE. 5. Turn the ignition to LOCK. Block both the front and rear of the wheel diagonally opposite of the jack- ing position. For example, if changing the right front tire, block the left rear wheel. NOTE: Passengers should not remain in the vehicle when the vehicle is being jacked. Jacking Instructions WARNING! Carefully follow these tire changing warnings to help prevent personal injury or damage to your vehicle: • Always park on a firm, level surface as far from the edge of the roadway as possible before raising the vehicle. • Turn on the Hazard Warning flasher. • Block the wheel diagonally opposite the wheel to be raised. • Set the parking brake firmly and set an automatic transmission in PARK; a manual transmission in REVERSE. • Never start or run the engine with the vehicle on a jack. (Continued) WHAT TO DO IN EMERGENCIES 543 WARNING! (Continued) • 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. If you need to get under a raised vehicle, take it to a service center where it can be raised on a lift. • Only use the jack in the positions indicated and for lifting this vehicle during a tire change. • If working on or near a roadway, be extremely careful of motor traffic. • To assure that spare tires, flat or inflated, are securely stowed, spares must be stowed with the valve stem facing the ground. 544 WHAT TO DO IN EMERGENCIES Jack Warning Label CAUTION! Do not attempt to raise the vehicle by jacking on locations other than those indicated in the Jacking Instructions for this vehicle. 1. Remove the spare tire, jack and tools from the 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 the jack handle driver to the extension, then to the lug wrench. 4. Operate the 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. Rear Jacking Location WHAT TO DO IN EMERGENCIES 545 WARNING! Raising the vehicle higher than necessary can make the vehicle less stable and cause a collision. 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. Front Jacking Location 5. Raise the vehicle by turning the jack screw to the right. Raise the vehicle till the tire is raised from the surface of the road. Minimum tire lift provides maximum stability. 546 WHAT TO DO IN EMERGENCIES 7. Position the spare wheel/tire on the vehicle and install the lug nuts with the cone-shaped end toward the wheel. Lightly tighten the lug nuts clockwise. Lug Nut Installation WARNING! To avoid the risk of forcing the vehicle off the jack, do not tighten the lug nuts fully until the vehicle has been lowered. Failure to follow this warning may result in personal injury. 8. Lower the vehicle by turning the jack screw to the left, and remove the jack. 9. Finish tightening the lug nuts. Push down on the wrench while tightening for increased leverage. Alter- nate nuts until each nut has been tightened twice. The 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 the jack assembly and wheel blocks. 11. Secure the tire, jack, and tools in their proper locations. 12. Remove blocks from wheels. 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. Road Tire Installation 1. Mount the road tire on the axle. 2. Install the remaining lug nuts with the cone shaped end of the nut toward the wheel. Lightly tighten the lug nuts. WHAT TO DO IN EMERGENCIES 547 WARNING! To avoid the risk of forcing the vehicle off the jack, do not tighten the lug nuts fully until the vehicle has been lowered. Failure to follow this warning may result in personal injury. 3. Lower the vehicle to the ground by turning the jack handle counterclockwise. 4. Finish tightening the lug nuts. Push down on the wrench while at the end of the handle for increased leverage. Tighten the lug nuts in a star pattern until each nut has been tightened twice. The correct tightness of each lug nut 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 service station. 5. After 25 miles (40 km) check the lug nut torque with a torque wrench to ensure that all lug nuts are properly seated against the wheel. 548 WHAT TO DO IN EMERGENCIES JUMP-STARTING PROCEDURES If your vehicle has a discharged battery it can be jump- started using a set of jumper cables and a battery in another vehicle or by using a portable battery booster pack. Jump-starting can be dangerous if done improperly so please follow the procedures in this section carefully. NOTE: When using a portable battery booster pack follow the manufacturer’s operating instructions and precautions. CAUTION! Do not use a portable battery booster pack or any other booster source with a system voltage greater than 12 Volts or damage to the battery, starter motor, alternator or electrical system may occur. WARNING! Do not attempt jump-starting if the battery is frozen. It could rupture or explode and cause personal injury. Preparations For Jump-Start The battery in your vehicle is located in the right rear of the engine compartment, behind the Power Distribution Center. WHAT TO DO IN EMERGENCIES 549 WARNING! • Take care to avoid the radiator cooling fan when- ever the hood is raised. It can start anytime the ignition switch is ON. You can be injured by moving fan blades. • Remove any metal jewelry such as watch bands or bracelets that might make an inadvertent electrical contact. You could be seriously injured. • Batteries contain sulfuric acid that can burn your skin or eyes and generate hydrogen gas which is flammable and explosive. Keep open flames or sparks away from the battery. Positive Battery Post 550 WHAT TO DO IN EMERGENCIES 1. Set the parking brake, shift the automatic transmission into PARK (manual transmission in NEUTRAL) and turn the ignition to LOCK. 2. Turn off the heater, radio, and all unnecessary electri- cal accessories. 3. If using another vehicle to jump-start the battery, park the vehicle within the jumper cables reach, set the parking brake and make sure the ignition is OFF. WARNING! Do not allow vehicles to touch each other as this could establish a ground connection and personal injury could result. Jump-Starting Procedure WARNING! Failure to follow this procedure could result in per- sonal injury or property damage due to battery ex- plosion. CAUTION! Failure to follow these procedures could result in damage to the charging system of the booster vehicle or the discharged vehicle. 1. Connect the positive (+) end of the jumper cable to the positive (+) post of the discharged vehicle. 2. Connect the opposite end of the positive (+) jumper cable to the positive (+) post of the booster battery. 3. Connect the negative end (-) of the jumper cable to the negative (-) post of the booster battery. 4. Connect the opposite end of the negative (-) jumper cable to a good engine ground (exposed metal part of the discharged vehicle’s engine) away from the battery and the fuel injection system. WARNING! Do not connect the cable to the negative post (-) of the discharged battery. The resulting electrical spark could cause the battery to explode and could result in personal injury. 5. Start the engine in the vehicle that has the booster battery, let the engine idle a few minutes, and then start the engine in the vehicle with the discharged battery. WHAT TO DO IN EMERGENCIES 551 Once the engine is started, remove the jumper cables in the reverse sequence: 6. Disconnect the negative (-) jumper cable from the engine ground of the vehicle with the discharged battery. 7. Disconnect the negative end (-) of the jumper cable from the negative (-) post of the booster battery. 8. Disconnect the opposite end of the positive (+) jumper cable from the positive (+) post of the booster battery. 9. Disconnect the positive (+)end of the jumper cable from the positive (+) post of the discharged vehicle. If frequent jump-starting is required to start your vehicle you should have the battery and charging system in- spected at your authorized dealer. 552 WHAT TO DO IN EMERGENCIES CAUTION! Accessories that can be plugged into the vehicle power outlets draw power from the vehicle’s battery, even when not in use (i.e., cellular phones, etc.). Eventually, if plugged in long enough, the vehicle’s battery will discharge sufficiently to degrade battery life and/or prevent the engine from starting. FREEING A STUCK VEHICLE If your vehicle becomes stuck in mud, sand or snow, it can often be moved using a rocking motion. Turn the steering wheel right and left to clear the area around the front wheels. Then shift back and forth between DRIVE and REVERSE (with automatic transmission) or 2nd gear and REVERSE (with manual transmission), while gently pressing the accelerator. Use the least amount of accel- erator pedal pressure that will maintain the rocking motion, without spinning the wheels, or racing the engine. CAUTION! Racing the engine or spinning the wheels may lead to transmission overheating and failure. Allow the en- gine to idle with the shift lever in NEUTRAL for at least one minute after every five rocking-motion cycles. This will minimize overheating and reduce the risk of transmission failure during prolonged efforts to free a stuck vehicle. NOTE: Press the ⬙ESC Off⬙ switch, to place the Electronic Stability Control (ESC) system in ⬙Partial Off⬙ mode, before rocking the vehicle. Refer to “Electronic Brake Control” in “Starting And Operating” for further infor- mation. Once the vehicle has been freed, press the ⬙ESC Off⬙ switch again to restore ⬙ESC On⬙ mode. CAUTION! • When “rocking” a stuck vehicle by shifting be- tween DRIVE/2nd gear and REVERSE, do not spin the wheels faster than 15 mph (24 km/h), or drive- train damage may result. • Revving the engine or spinning the wheels too fast may lead to transmission overheating and failure. It can also damage the tires. Do not spin the wheels above 30 mph (48 km/h) while in gear (no trans- mission shifting occurring). WHAT TO DO IN EMERGENCIES 553 WARNING! Fast spinning tires can be dangerous. Forces gener- ated by excessive wheel speeds may cause damage, or even failure, of the axle and tires. A tire could explode and injure someone. Do not spin your vehi- cle’s wheels faster than 30 mph (48 km/h) or for longer than 30 seconds continuously without stop- ping when you are stuck and do not let anyone near a spinning wheel, no matter what the speed. 554 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. NOTE: For off-road recovery, it is recommended to use both of the front tow hooks to minimize the risk of damage to the vehicle. Always use an appropriately rated tow strap. WARNING! • Do not use a chain for freeing a stuck vehicle. Chains may break, causing serious injury or death. • Stand clear of vehicles when pulling with tow hooks. Tow straps may become disengaged, caus- ing serious injury. 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. SHIFT LEVER OVERRIDE If a malfunction occurs and the shift lever cannot be moved out of the PARK position, you can use the following procedure to temporarily move the shift lever: 1. Turn the engine OFF. 2. Firmly apply the parking brake. 3. Using a small screwdriver or similar tool, remove the shift lever override access cover (located to the right of the shift lever). 4. Turn the ignition to the ACC or ON/RUN position, but do not start the engine. WHAT TO DO IN EMERGENCIES 555 5. Press and maintain firm pressure on the brake pedal. 6. Insert the screwdriver or similar tool into the access port, and push and hold the override release lever down. 7. Move the shift lever to the NEUTRAL position. 8. The vehicle may then be started in NEUTRAL. 9. Reinstall the shift lever override access cover. Shift Lever Override Access Cover 556 WHAT TO DO IN EMERGENCIES TOWING A DISABLED VEHICLE This section describes procedures for towing a disabled vehicle using a commercial wrecker service. If the trans- mission and drivetrain are operable, disabled vehicles may also be towed as described under “Recreational Towing” in the “Starting And Operating” section. Towing Condition Wheels OFF the Ground 4WD MODELS Flat Tow NONE See instructions under “Recreational Towing” • Automatic Transmission in PARK • Manual Transmission in gear • Transfer Case in NEUTRAL • Tow in forward direction (NOT in Neutral) Wheel Lift or Dolly Tow Flatbed Front Rear ALL NOT ALLOWED NOT ALLOWED BEST METHOD Proper towing or lifting equipment is required to prevent damage to your vehicle. Use only tow bars and other equipment designed for this purpose, following equip- ment manufacturer’s instructions. Use of safety chains is mandatory. Attach a tow bar or other towing device to main structural members of the vehicle, not to bumpers or associated brackets. State and local laws regarding vehicles under tow must be observed. If you must use the accessories (wipers, defrosters, etc.) while being towed, the ignition must be in the ON/RUN position, not the ACC position. If the vehicle’s battery is discharged, refer to “Shift Lever Override” in “What To Do In Emergencies” for instruc- tions on shifting the automatic transmission out of PARK for towing. WHAT TO DO IN EMERGENCIES 557 CAUTION! Do not use sling type equipment when towing. When securing the vehicle to a flatbed truck, do not attach to front or rear suspension components. Damage to your vehicle may result from improper towing. Without The Ignition Key Special care must be taken when the vehicle is towed with the ignition in the OFF position. The only approved method of towing without the key fob is with a flatbed truck. Proper towing equipment is necessary to prevent damage to the vehicle. 558 WHAT TO DO IN EMERGENCIES Four–Wheel Drive Models The manufacturer recommends towing with all wheels OFF the ground. Acceptable methods are to tow the vehicle on a flatbed or with one end of the vehicle raised and the opposite end on a towing dolly. If flatbed equipment is not available and the transfer case is operable, the vehicle may be towed (in the forward direction, with ALL wheels on the ground), IF the transfer case is in NEUTRAL (N) and the transmission is in PARK (for automatic transmissions) or in gear ( NOT in NEUTRAL, for manual transmissions). Refer to “Rec- reational Towing” in “Starting And Operating” for de- tailed instructions. CAUTION! • Front or rear wheel lifts should not be used. Inter- nal transmission damage or transfer case will occur if a front or rear wheel lift is used when towing. • Failure to follow these towing methods can cause severe transmission damage and/or transfer case. Such damage is not covered by the New Vehicle Limited Warranty. MAINTAINING YOUR VEHICLE CONTENTS 䡵 ENGINE COMPARTMENT — 3.6L . . . . . . . . ..561 䡵 ONBOARD DIAGNOSTIC SYSTEM — OBD II . .562 ▫ Loose Fuel Filler Cap Message . . . . . . . . . . ..562 䡵 EMISSIONS INSPECTION AND MAINTENANCE PROGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . .563 䡵 REPLACEMENT PARTS . . . . . . . . . . . . . . . . ..564 䡵 DEALER SERVICE . . . . . . . . . . . . . . . . . . . . . .564 䡵 MAINTENANCE PROCEDURES . . . . . . . . . ..565 ▫ Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . .566 ▫ Engine Oil Filter . . . . . . . . . . . . . . . . . . . . . .569 ▫ Engine Air Cleaner Filter . . . . . . . . . . . . . . ..569 ▫ Maintenance-Free Battery . . . . . . . . . . . . . ..570 ▫ Air Conditioner Maintenance . . . . . . . . . . . ..571 ▫ Body Lubrication . . . . . . . . . . . . . . . . . . . ..572 ▫ Windshield Wiper Blades . . . . . . . . . . . . . ..573 ▫ Adding Washer Fluid . . . . . . . . . . . . . . . . ..574 ▫ Exhaust System . . . . . . . . . . . . . . . . . . . . . .574 ▫ Cooling System . . . . . . . . . . . . . . . . . . . . . .577 ▫ Brake System . . . . . . . . . . . . . . . . . . . . . . . .583 ▫ Automatic Transmission – If Equipped . . . . ..585 560 MAINTAINING YOUR VEHICLE ▫ Clutch Hydraulic System (Manual Transmission) – If Equipped . . . . . . . . . . . . ..588 ▫ Manual Transmission – If Equipped . . . . . . ..588 ▫ Transfer Case . . . . . . . . . . . . . . . . . . . . . . . .589 ▫ Front/Rear Axle Fluid . . . . . . . . . . . . . . . . ..590 ▫ Appearance Care And Protection From Corrosion . . . . . . . . . . . . . . . . . . . . . . . . . . .591 䡵 FUSES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .598 ▫ Totally Integrated Power Module . . . . . . . . ..598 䡵 VEHICLE STORAGE . . . . . . . . . . . . . . . . . . ..605 䡵 REPLACEMENT BULBS . . . . . . . . . . . . . . . ..606 䡵 BULB REPLACEMENT . . . . . . . . . . . . . . . . ..607 ▫ Headlamp . . . . . . . . . . . . . . . . . . . . . . . . . .607 ▫ Front Park/Turn Signal . . . . . . . . . . . . . . . ..608 ▫ Front Side Marker . . . . . . . . . . . . . . . . . . . ..608 ▫ Front Fog Lamp . . . . . . . . . . . . . . . . . . . . . .608 ▫ Rear Tail, Stop, Turn Signal, And Backup ▫ Center High-Mounted Stop Lamp (CHMSL) Lamp . . . . . . . . . . . . . . . . . . . . . . . . . . . . .609 . .609 䡵 FLUID CAPACITIES . . . . . . . . . . . . . . . . . . ..610 䡵 FLUIDS, LUBRICANTS AND GENUINE PARTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .611 ▫ Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . .611 ▫ Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . . .612 ENGINE COMPARTMENT — 3.6L MAINTAINING YOUR VEHICLE 561 1 — Integrated Power Module (Fuses) 2 — Battery 3 — Engine Oil Dipstick 4 — Automatic Transmission Dipstick (Under Engine Cover) 5 — Engine Oil Fill 6 — Brake Fluid Reservoir 7 — Washer Fluid Reservoir 8 — Engine Coolant Reservoir 9 — Air Cleaner Filter 10 — Coolant Pressure Cap 11 — Power Steering Fluid Reservoir 562 MAINTAINING YOUR VEHICLE 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” (MIL). 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

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2013 Jeep Wrangler Owners Manual