2012 Jeep Grand Cherokee SRT8 Owners Manual

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ing the size designation. Example: LT235/85R16. • Temporary spare tires are spares designed for tempo- rary emergency use only. Temporary high pressure compact spare tires have the letter “T” or “S” molded into the sidewall preceding the size designation. Ex- ample: T145/80D18 103M. • High flotation tire sizing is based on U.S. design standards and it begins with the tire diameter molded into the sidewall. Example: 31x10.5 R15 LT. Tire Sizing Chart Size Designation: EXAMPLE: P = Passenger car tire size based on U.S. design standards ⴖ....blank....ⴖ = Passenger car tire based on European design standards LT = Light truck tire based on U.S. design standards T or S = Temporary spare tire 31 = Overall diameter in inches (in) 215 = Section width in millimeters (mm) 65 = Aspect ratio in percent (%) — Ratio of section height to section width of tire 10.5 = Section width in inches (in) R = Construction code — ⬙R⬙ means radial construction — ⬙D⬙ means diagonal or bias construction 15 = Rim diameter in inches (in) STARTING AND OPERATING 443 444 STARTING AND OPERATING Service Description: 95 = Load Index EXAMPLE: — A numerical code associated with the maximum load a tire can carry H = Speed Symbol — A symbol indicating the range of speeds at which a tire can carry a load corresponding to its load index under certain operating conditions — The maximum speed corresponding to the speed symbol should only be achieved under specified operating conditions (i.e., tire pressure, vehicle loading, road conditions, and posted speed limits) Load Identification: ⴖ....blank....ⴖ = Absence of any text on the sidewall of the tire indicates a Standard Load (SL) tire Extra Load (XL) = Extra load (or reinforced) tire Light Load (LL) = Light load tire C, D, E, F, G = Load range associated with the maximum load a tire can carry at a specified pressure Maximum Load — Maximum load indicates the maximum load this tire is designed to carry Maximum Pressure — Maximum pressure indicates the maximum permissible cold tire inflation pressure for this tire Tire Identification Number (TIN) The TIN may be found on one or both sides of the tire, however, the date code may only be on one side. Tires with white sidewalls will have the full TIN, including the date code, located on the white sidewall side of the tire. STARTING AND OPERATING 445 Look for the TIN on the outboard side of black sidewall tires as mounted on the vehicle. If the TIN is not found on the outboard side, then you will find it on the inboard side of the tire. DOT = Department of Transportation — This symbol certifies that the tire is in compliance with the U.S. Department of Transportation tire safety standards and is approved for highway use EXAMPLE: DOT MA L9 ABCD 0301 MA = Code representing the tire manufacturing location (two digits) L9 = Code representing the tire size (two digits) ABCD = Code used by the tire manufacturer (one to four digits) 03 = Number representing the week in which the tire was manufactured (two digits) —03 means the 3rd week. 01 = Number representing the year in which the tire was manufactured (two digits) —01 means the year 2001 — Prior to July 2000, tire manufacturers were only required to have one number to represent the year in which the tire was manufactured. Example: 031 could represent the 3rd week of 1981 or 1991 446 STARTING AND OPERATING Tire Terminology And Definitions B-Pillar Term Cold Tire Inflation Pressure Maximum Inflation Pressure Recommended Cold Tire Inflation Pressure Tire Placard Definition The vehicle B-Pillar is the structural member of the body located behind the front door. Cold tire inflation pressure is defined as the tire pressure after the vehicle has not been driven for at least 3 hours, or driven less than 1 mile (1.6 km) after sitting for a three hour period. Inflation pressure is measured in units of PSI (pounds per square inch) or kPa (kilopascals). The maximum inflation pressure is the maximum permissible cold tire inflation pressure for this tire. The maximum inflation pres- sure is molded into the sidewall. Vehicle manufacturer’s recommended cold tire inflation pressure as shown on the tire placard. A paper label permanently attached to the vehicle describing the vehicle’s loading capacity, the original equipment tire sizes and the recommended cold tire inflation pressures. Tire Loading And Tire Pressure Tire And Loading Information Placard STARTING AND OPERATING 447 Tire And Loading Information Placard Location NOTE: The proper cold tire inflation pressure is listed on the driver’s side B-Pillar or the rear edge of the driver’s side door. Tire and Loading Information Placard This placard tells you important information about the: 1) number of people that can be carried in the vehicle 2) total weight your vehicle can carry 3) tire size designed for your vehicle 4) cold tire inflation pressures for the front, rear, and spare tires. Tire Placard Location 448 STARTING AND OPERATING Loading The vehicle maximum load on the tire must not exceed the load carrying capacity of the tire on your vehicle. You will not exceed the tire’s load carrying capacity if you adhere to the loading conditions, tire size, and cold tire inflation pressures specified on the Tire and Loading Information placard and in the “Vehicle Loading” section of this manual. NOTE: Under a maximum loaded vehicle condition, gross axle weight ratings (GAWRs) for the front and rear axles must not be exceeded. For further information on GAWRs, vehicle loading, and trailer towing, refer to “Vehicle Loading” in this section. To determine the maximum loading conditions of your vehicle, locate the statement “The combined weight of occupants and cargo should never exceed XXX lbs or XXX kg” on the Tire and Loading Information placard. The combined weight of occupants, cargo/luggage and trailer tongue weight (if applicable) should never exceed the weight referenced here. Steps For Determining Correct Load Limit 1. Locate the statement “The combined weight of occu- pants and cargo should never exceed XXX lbs or XXX kg” on your vehicle’s placard. 2. Determine the combined weight of the driver and passengers that will be riding in your vehicle. 3. Subtract the combined weight of the driver and pas- sengers from XXX lbs or XXX kg. 4. The resulting figure equals the available amount of cargo and luggage load capacity. For example, if “XXX” amount equals 1,400 lbs (635 kg) and there will be five 150 lb (68 kg) passengers in your vehicle, the amount of available cargo and luggage load capacity is 650 lbs (295 kg) (since 5 x 150 = 750, and 1400 – 750 = 650 lbs [295 kg]). 5. Determine the combined weight of luggage and cargo being loaded on the vehicle. That weight may not safely exceed the available cargo and luggage load capacity calculated in Step 4. STARTING AND OPERATING 449 6. If your vehicle will be towing a trailer, load from your trailer will be transferred to your vehicle. Consult this manual to determine how this reduces the available cargo and luggage load capacity of your vehicle. NOTE: • The following table shows examples on how to calcu- late total load, cargo/luggage, and towing capacities of your vehicle with varying seating configurations and number and size of occupants. This table is for illustration purposes only and may not be accurate for the seating and load carry capacity of your vehicle. • For the following example, the combined weight of occupants and cargo should never exceed 865 lbs (392 kg). 450 STARTING AND OPERATING WARNING! Safety STARTING AND OPERATING 451 Overloading of your tires is dangerous. Overloading can cause tire failure, affect vehicle handling, and increase your stopping distance. Use tires of the recommended load capacity for your vehicle. Never overload them. TIRES — GENERAL INFORMATION Tire Pressure Proper tire inflation pressure is essential to the safe and satisfactory operation of your vehicle. Three primary areas are affected by improper tire pressure: WARNING! cause collisions. sult in over-heating and tire failure. • Improperly inflated tires are dangerous and can • Under-inflation increases tire flexing and can re- • Over-inflation reduces a tire’s ability to cushion shock. Objects on the road and chuckholes can cause damage that result in tire failure. • Over-inflated or under-inflated tires can affect vehicle handling and can fail suddenly, resulting in loss of vehicle control. • Unequal tire pressures can cause steering prob- lems. You could lose control of your vehicle. (Continued) 452 STARTING AND OPERATING WARNING! (Continued) • Unequal tire pressures from one side of the ve- hicle to the other can cause the vehicle to drift to the right or left. • Always drive with each tire inflated to the recom- mended cold tire inflation pressure. Economy Improper inflation pressures can cause uneven wear patterns to develop across the tire tread. These abnormal wear patterns will reduce tread life resulting in a need for earlier tire replacement. Under-inflation also increases tire fuel rolling consumption. Ride Comfort And Vehicle Stability Proper tire inflation contributes to a comfortable ride. Over-inflation produces a jarring and uncomfortable ride. Both under-inflation and over-inflation affect the resistance resulting higher in stability of the vehicle and can produce a feeling of sluggish response or over responsiveness in the steering. Unequal tire pressures can cause erratic and unpredict- able steering response. Unequal tire pressure from side to side may cause the vehicle to drift left or right. Tire Inflation Pressures The proper cold tire inflation pressure is listed on the driver’s side “B” Pillar or rear edge of the driver’s side door. The pressure should be checked and adjusted, as well as inspected for signs of tire wear or visible damage, at least once a month. Use a good quality pocket-type gauge to check tire pressure. Do not make a visual judgement when determining proper inflation. Radial tires may look properly inflated even when they are under-inflated. CAUTION! After inspecting or adjusting the tire pressure, al- ways reinstall the valve stem cap. This will prevent moisture and dirt from entering the valve stem, which could damage it. Inflation pressures specified on the placard are always cold tire inflation pressure. Cold tire inflation pressure is defined as the tire pressure after the vehicle has not been driven for at least three hours, or driven less than 1 mile (1.6 km) after a three-hour period. The cold tire inflation pressure must not exceed the maximum inflation pres- sure molded into the tire sidewall. Check tire pressures more often if subject to a wide range of outdoor temperatures, as tire pressures vary with temperature changes. STARTING AND OPERATING 453 Tire pressures change by approximately 1 psi (7 kPa) per 12°F (7°C) of air temperature change. Keep this in mind when checking tire pressure inside a garage, especially in the winter. Example: If garage temperature = 68°F (20°C) and the outside temperature = 32°F (0°C) then the cold tire inflation pressure should be increased by 3 psi (21 kPa), which equals 1 psi (7 kPa) for every 12°F (7°C) for this outside temperature condition. Tire pressure may increase from 2 to 6 psi (13 to 40 kPa) during operation. DO NOT reduce this normal pressure build-up, or your tire pressure will be too low. 454 STARTING AND OPERATING Tire Pressures For High Speed Operation The manufacturer advocates driving at safe speeds within posted speed limits. Where speed limits or condi- tions are such that the vehicle can be driven at high speeds, maintaining correct tire inflation pressure is very important. Increased tire pressure and reduced vehicle loading may be required for high-speed vehicle opera- tion. Refer to original equipment or an authorized tire dealer for recommended safe operating speeds, loading and cold tire inflation pressures. WARNING! High speed driving with your vehicle at or above maximum load is dangerous. The added strain on your tires could cause them to fail. You could have a serious collision. Do not drive a vehicle loaded to the maximum capacity at continuous speeds above 75 mph (120 km/h). Radial-Ply Tires WARNING! Combining radial ply tires with other types of tires on your vehicle will cause your vehicle to handle poorly. The instability could cause a collision. Al- ways use radial tires in sets of four. Never combine them with other types of tires. Cuts and punctures in radial tires are repairable only in the tread area because of sidewall flexing. Consult your authorized dealer for radial tire repairs. Spare Tire Matching Original Equipped Tire And Wheel – If Equipped Your vehicle may be equivalent with a spare tire and wheel in look and function as the original equipment tire and wheel found on the front or rear axle of your vehicle. This spare tire may be used in the tire rotation for your vehicle. If your vehicle has this option refer to an authorized tire dealer for the recommended tire rotation pattern. If your vehicle is not equipped with an original equip- ment tire and wheel as a spare, a non-matching tempo- rary emergency use spare may be equipped with your vehicle. Temporary use spares are engineered to be used only with your vehicle. Your vehicle may be equipped with one of the following types of non-matching tempo- rary use spares; compact, full size, or limited-use. Do not install more than one non-matching temporary use spare tire/wheel on the vehicle at any given time. STARTING AND OPERATING 455 CAUTION! Because of the reduced ground clearance, do not take your vehicle through an automatic car wash with a compact, full size or limited-use temporary spare installed. Damage to the vehicle may result. Compact Spare Tire – If Equipped The compact spare is for temporary emergency use only. You can identify if your vehicle is equipped with a compact spare by looking at the spare tire description on the Tire and Loading Information Placard located on the driver’s side door opening or on the sidewall of the tire. Compact spare tire descriptions begin with the letter “T” or “S” preceding the size designation. Example: T145/ 80D18 103M. T, S = Temporary Spare Tire 456 STARTING AND OPERATING Since this tire has limited tread life the original equip- ment tire should be repaired (or replaced) and reinstalled on your vehicle at the first opportunity. NOTE: The compact spare tire is to be used for rear wheel(s) only. For a flat front tire, move the rear tire to the front and use the compact spare on the rear. Do not tow a trailer when using the compact spare tire. Do not install a wheel cover or attempt to mount a conventional tire on the compact spare wheel, since the wheel is designed specifically for the compact spare tire. Do not install more than one compact spare tire and wheel on the vehicle at any given time WARNING! Compact spares are for temporary emergency use only. With these spares, do not drive more than 50 mph (80 km/h). Temporary use spares have limited tread life. When the tread is worn to the tread wear indicators, the temporary use spare tire needs to be replaced. Be sure to follow the warnings, which apply to your spare. Failure to do so could result in spare tire failure and loss of vehicle control. Full Size Spare – If Equipped The full size spare is for temporary emergency use only. This tire may look like the original equipped tire on the front or rear axle of your vehicle, but it is not. This spare tire may have limited tread life. When the tread is worn to the tread wear indicators, the temporary use full size spare tire needs to be replaced. Since it is not the same as your original equipment tire, replace (or repair) the original equipment tire and reinstall on the vehicle at the first opportunity. NOTE: The spare tire is to be used for rear wheel(s) only. For a flat front tire, move the rear tire to the front and use the spare on the rear. Do not tow a trailer when using the spare tire. Limited-Use Spare – If Equipped The limited-use spare tire is for temporary emergency use only. This tire is identified by a label located on the limited-use spare wheel. This label contains the driving limitations for this spare. This tire may look like the STARTING AND OPERATING 457 original equipped tire on the front or rear axle of your vehicle, but it is not. Installation of this limited-use spare tire affects vehicle handling. Since it is not the same as your original equipment tire, replace (or repair) the original equipment tire and reinstall on the vehicle at the first opportunity. WARNING! Limited-use spares are for emergency use only. In- stallation of this limited-use spare tire affects vehicle handling. With this tire, do not drive more than the speed listed on the limit-use spare wheel. Keep inflated to the cold tire inflation pressure listed on your Tire and Loading Information Placard located on the driver’s side door opening. Replace (or repair) the original equipment tire at the first opportunity and reinstall it on your vehicle. Failure to do so could result in loss of vehicle control. 458 STARTING AND OPERATING Tire Spinning When stuck in mud, sand, snow, or ice conditions, do not spin your vehicle’s wheels above 30 mph (48 km/h). WARNING! Fast spinning tires can be dangerous. Forces gener- ated by excessive wheel speeds may cause tire dam- age or failure. A tire could explode and injure some- one. Do not spin your vehicle’s wheels faster than 30 mph (48 km/h) when you are stuck, and do not let anyone near a spinning wheel no matter what the speed. Tread Wear Indicators Tread wear indicators are in the original equipment tires to help you in determining when your tires should be replaced. 1 — Worn Tire 2 — New Tire These indicators are molded into the bottom of the tread grooves. They will appear as bands when the tread depth becomes 1/16 in (2 mm). When the tread is worn to the tread wear indicators, the tire should be replaced. Life Of Tire The service life of a tire is dependent upon various factors including but not limited to: • Driving style • Tire pressure • Distance driven WARNING! Tires and the spare tire should be replaced after six years, regardless of the remaining tread. Failure to follow this warning can result in sudden tire failure. You could lose control and have an collision resulting in serious injury or death. Keep dismounted tires in a cool, dry place with as little exposure to light as possible. Protect tires from contact with oil, grease, and gasoline. STARTING AND OPERATING 459 Replacement Tires The tires on your new vehicle provide a balance of many characteristics. They should be inspected regularly for wear and correct cold tire inflation pressure. The manu- facturer strongly recommends that you use tires equiva- lent to the originals in size, quality and performance when replacement is needed. (Refer to the paragraph on “Tread Wear Indicators”). Refer to the “Tire and Loading Information” placard for the size designation of your tire. The Load Index and Speed Symbol for your tire will be found on the original equipment tire sidewall. See the Tire Sizing Chart example found in the Tire Safety Information section of this manual for more information relating to the Load Index and Speed Symbol of a tire. It is recommended to replace the two front tires or two rear tires as a pair. Replacing just one tire can seriously affect your vehicle’s handling. If you ever replace a wheel, make sure that the wheel’s specifications match those of the original wheels. 460 STARTING AND OPERATING It is recommended you contact your original equipment or an authorized tire dealer with any questions you may have on tire specifications or capability. Failure to use equivalent replacement tires may adversely affect the safety, handling, and ride of your vehicle. WARNING! • Do not use a tire, wheel size or rating other than that specified for your vehicle. Some combinations of unapproved tires and wheels may change sus- pension dimensions and performance characteris- tics, resulting in changes to steering, handling, and braking of your vehicle. This can cause unpredict- able handling and stress to steering and suspen- sion components. You could lose control and have a collision resulting in serious injury or death. Use only the tire and wheel sizes with load ratings approved for your vehicle. (Continued) WARNING! (Continued) • Never use a tire with a smaller load index or capacity than what was originally equipped on your vehicle. Using a tire with a smaller load index could result in tire overloading and failure. You could lose control and have a collision. • Failure to equip your vehicle with tires having adequate speed capability can result in sudden tire failure and loss of vehicle control. CAUTION! Replacing original tires with tires of a different size may result in false speedometer and odometer read- ings. TIRE ROTATION RECOMMENDATIONS The tires on the front and rear of your vehicle operate at different loads and perform different steering, handling, and braking functions. For these reasons, they wear at unequal rates. These effects can be reduced by timely rotation of tires. The benefits of rotation are especially worthwhile with aggressive tread designs such as those on On/Off-Road type tires. Rotation will increase tread life, help to main- tain mud, snow, and wet traction levels, and contribute to a smooth, quiet ride. Refer to the “Maintenance Schedule” for the proper maintenance intervals. More frequent rotation is permis- sible if desired. The reasons for any rapid or unusual wear should be corrected prior to rotation being per- formed. STARTING AND OPERATING 461 NOTE: The premium Tire Pressure Monitor System will automatically locate the pressure values displayed in the correct vehicle position following a tire rotation. The suggested rotation method is the “forward-cross” shown in the following diagram. Tire Rotation 462 STARTING AND OPERATING TIRE PRESSURE MONITOR SYSTEM (TPMS) The Tire Pressure Monitoring System (TPMS) will warn the driver of a low tire pressure based on the vehicle recommended cold tire pressure. The tire pressure will vary with temperature by about 1 psi (7 kPa) for every 12°F (6.5°C). This means that when the outside temperature decreases, the tire pressure will decrease. Tire pressure should always be set based on cold inflation tire pressure. This is defined as the tire pressure after the vehicle has not been driven for at least three hours, or driven less than 1 mile (1.6 km) after a three-hour period. Refer to “Tires – General Informa- tion” in “Starting and Operating” for information on how to properly inflate the vehicle’s tires. The tire pressure will also increase as the vehicle is driven - this is normal and there should be no adjustment for this increased pressure. The TPMS will warn the driver of a low tire pressure if the tire pressure falls below the low pressure warning threshold for any reason, including low temperature effects, or natural pressure loss through the tire. The TPMS will continue to warn the driver of low tire pressure as long as the condition exists, and will not turn off until the tire pressure is at or above recommended cold tire pressure. Once the low tire pressure warning has been illuminated, the tire pressure must be increased to the recommended cold tire pressure in order for the Tire Pressure Monitoring Telltale Light to be turned off. The system will automatically update and the Tire Pressure Monitoring Telltale Light will extinguish once the up- dated 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. For example, your vehicle has a recommended cold (parked for more than three hours) tire pressure of 33 psi (227 kPa). If the ambient temperature is 68°F (20°C) and the measured tire pressure is 28 psi (193 kPa), a tempera- ture drop to 20°F (-7°C) will decrease the tire pressure to approximately 24 psi (165 kPa). This tire pressure is sufficiently low enough to turn ON the Tire Pressure Monitoring Telltale Light. Driving the vehicle may cause the tire pressure to rise to approximately 28 psi (193 kPa), but the Tire Pressure Monitoring Telltale Light will still be ON. In this situation, the Tire Pressure Monitoring Telltale Light will turn OFF only after the tires have been inflated to the vehicle’s recommended cold tire pressure value. STARTING AND OPERATING 463 CAUTION! • The TPMS has been optimized for the original equipment tires and wheels. TPMS pressures have been established for the tire size equipped on your vehicle. Undesirable system operation or sensor damage may result when using replacement equipment that is not of the same size, type, and/or style. Aftermarket wheels can cause sensor dam- age. Do not use aftermarket tire sealants or balance beads if your vehicle is equipped with a TPMS, as damage to the sensors may result. • After inspecting or adjusting the tire pressure always reinstall the valve stem cap. This will prevent moisture and dirt from entering the valve stem, which could damage the Tire Pressure Moni- toring Sensor. while adjusting your tire pressure. 464 STARTING AND OPERATING NOTE: • The TPMS is not intended to replace normal tire care and maintenance, or to provide warning of a tire failure or condition. • The TPMS should not be used as a tire pressure gauge • Driving on a significantly under-inflated tire causes the tire to overheat and can lead to tire failure. Under-inflation also reduces fuel efficiency and tire tread life, and may affect the vehicle’s handling and stopping ability. • The TPMS is not a substitute for proper tire mainte- nance, and it is the driver’s responsibility to maintain correct tire pressure using an accurate tire gauge, 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 TPMS will monitor the actual tire pressure in the tire. Premium 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 regularly NOTE: check the tire pressure in all of your tires and to maintain the proper pressure. The Tire Pressure Monitor System (TPMS) consists of the following components: • Receiver Module • Four Tire Pressure Monitoring Sensors STARTING AND OPERATING 465 NOTE: Your system can be set to display pressure units in PSI, kPa, or BAR. • 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 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 one or more Low Pressure messages (Left Front, Left Rear, Right Front, Right Rear) 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 Instrument Panel” for further informa- tion. 466 STARTING AND OPERATING 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. 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. NOTE: Your system can be set to display pressure units in PSI, kPa, or BAR. 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 the trigger compo- nent an incorrect sensor location fault. In this case, the STARTING AND OPERATING 467 ⬙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: There is no 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 Pres- sure 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. In addition, 468 STARTING AND OPERATING the EVIC will display a “SERVICE TPM SYSTEM⬙ mes- sage for three 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 sec- onds and then remain on solid, and the EVIC will display a ⬙SERVICE TPM SYSTEM⬙ message for three 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. 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 operation. The tire pressure sensors are covered under one of the following licenses: United States . . . . . . . . . . . . . . . . . . . MRXC4W4MA4 Canada . . . . . . . . . . . . . . . . . . . . . 2546A-C4W4MA4 FUEL REQUIREMENTS 6.4L Engine The 6.4L engine is designed to meet all emissions regulations and provide excel- lent fuel economy and performance when using high-quality premium unleaded gasoline with an octane rating of 91 or higher. 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. STARTING AND OPERATING 469 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 spe- cifically blended to reduce vehicle emissions and im- prove 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. 470 STARTING AND OPERATING 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 or E-85 Ethanol. Use of these blends may result in starting and driveability problems and may damage critical fuel system components. Problems that result from using methanol/gasoline or E-85 ethanol 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. 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 the battery to reset the engine controller memory 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 STARTING AND OPERATING 471 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. 472 STARTING AND OPERATING 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. • 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. (Continued) CAUTION! (Continued) • The use of fuel additives, which are now being sold as octane enhancers, is not recommended. Most of these products contain high concentra- tions 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 the emissions con- NOTE: trol system can result in civil penalties being assessed against you. 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) STARTING AND OPERATING 473 WARNING! (Continued) • Guard against carbon monoxide with proper maintenance. Have the exhaust system inspected every time the vehicle is raised. Have any abnor- mal conditions repaired promptly. Until repaired, drive with all side windows fully open. • Keep the liftgate/trunk closed when driving your vehicle to prevent carbon monoxide and other poisonous exhaust gases from entering the vehicle. ADDING FUEL Fuel Filler Cap (Gas Cap) The gas cap is located behind the locking fuel filler door, on the driver’s side of the vehicle. If the gas cap is lost or damaged, be sure the replacement cap is for use with this vehicle. 474 STARTING AND OPERATING 1. Press the fuel filler door release switch (located under the headlamp switch). 2. Open the fuel filler door, and remove the fuel filler cap. Fuel Filler Door Release Switch Fuel Filler Cap CAUTION! • Damage to the fuel system or emission control system could result from using an improper fuel 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. • A poorly fitting gas cap may cause the MIL to turn • To avoid fuel spillage and overfilling, do not “top on. off” the fuel tank after filling. STARTING AND OPERATING 475 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 malfunction indicator light to turn on. • 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. NOTE: • When the fuel nozzle “clicks” or shuts off, the fuel tank is full. 476 STARTING AND OPERATING • Tighten the gas cap about one-quarter 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. Emergency Fuel Filler Door Release If you are unable to open the fuel filler door, use the fuel filler door emergency release. 1. Open the liftgate. 2. Push down on the inboard edge of the left storage bin, this will pop up the outboard edge. 3. Grab popped up outboard edge with other hand to disengage snaps. 4. Remove the storage bin. 5. Pull the release cable. Release Cable Loose Fuel Filler Cap Message If the vehicle diagnostic system determines that the fuel filler cap is loose, improperly installed, or damaged, a loose gascap indicator will display in the EVIC telltale display area. Refer to “Electronic Vehicle Information Center (EVIC)” in “Understanding Your Instrument Panel” for further information. Tighten the fuel filler cap properly and press the SELECT button to turn off the message. If the problem continues, the message will appear the next time the vehicle is started. 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. STARTING AND OPERATING 477 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 or any given vehicle 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, 478 STARTING AND OPERATING 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. 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 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. STARTING AND OPERATING 479 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. WARNING! • Do not tow when the “Tire Pressure Monitoring Telltale Light” is illuminated. Failure to follow this could result in loss of control and serious injury. • The tailpipes may be hot and you could be seri- ously injured if you come into contact with the tailpipes. To maintain warranty coverage, follow the requirements and recommendations in this manual concerning ve- hicles used for trailer towing. 480 STARTING AND OPERATING 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 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. 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. 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. STARTING AND OPERATING 481 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 and maximum width of the front of a trailer. 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 kind of hitches are the most popular on the market today and they are commonly used to tow small- and medium- sized trailers. 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 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. 482 STARTING AND OPERATING WARNING! • An improperly adjusted weight-distributing hitch system may reduce handling, stability, braking performance, and could result in an accident. • Weight-distributing hitch systems may not be compatible with Surge Brake Couplers. Consult with your hitch and trailer manufacturer or a reputable Recreational Vehicle dealer for addi- tional 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. Refer to the Trailer Towing Weights (Maximum Trailer Weight Ratings) chart for the Max. GTW towable for your given drivetrain. 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 Fifth Wheel/ Gooseneck 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. Greater than 10,000 lbs (4 540 kg) Trailer Towing Weights (Maximum Trailer Weight Ratings) The following chart provides the maximum trailer weight ratings towable for your given drivetrain. Engine/ Transmission 6.4L Automatic GCWR (Gross Combined Wt. Rating) Frontal Area 10,400 lbs (4 717 kg) 40 sq ft (3.72 sq m) Max. GTW (Gross Trailer Wt.) 5,000 lbs (2 268 kg) Max. Trailer Tongue Wt. (See Note) 500 lbs (227 kg) Refer to local laws for maximum trailer towing speeds. STARTING AND OPERATING 483 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 “Tire–Safety Information” in “Starting and Operating” for further information. 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 vehicle and trailer. Failure to load trailers heavier in front is the cause of many trailer accidents. 484 STARTING AND OPERATING Never exceed the maximum tongue weight stamped on your trailer hitch. Consider the following items when computing the weight on the front/rear axles of the vehicle: • The trailer tongue weight of the trailer. put in or on your vehicle. • The weight of any other type of cargo or equipment • The weight of the driver and all passengers. 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” in “Tire Safety Information” 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: 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. WARNING! Improper towing can lead to an injury accident. Follow these guidelines to make your trailer towing as safe as possible: (Continued) STARTING AND OPERATING 485 WARNING! (Continued) • 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 overload your vehicle or trailer. Overloading can cause a loss of control, poor performance or dam- age to brakes, axle, engine, transmission, steering, suspension, chassis structure or tires. • Safety chains must always be used between your vehicle and trailer. Always connect the chains to the hook retainers of the vehicle hitch. Cross the chains under the trailer tongue and allow enough slack for turning corners. (Continued) 486 STARTING AND OPERATING WARNING! (Continued) • Vehicles with trailers should not be parked on a grade. When parking, apply the parking brake on the tow vehicle. Put the tow vehicle transmission in PARK. Always, block or ⴖchockⴖ 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 uti- lized (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 − 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 pres- sures 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. 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). STARTING AND OPERATING 487 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 hydraulic 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 an accident. (Continued) 488 STARTING AND OPERATING WARNING! (Continued) • Towing any trailer will increase your stopping distance. When towing you should allow for addi- tional space between your vehicle and the vehicle in front of you. Failure to do so could result in an accident. Towing Tips NOTE: To provide optimum towing performance and to protect transmission components always select Trailer Tow mode when towing a trailer. Before setting out on a trip, practice turning, stopping and backing the trailer in an area away from heavy traffic. Automatic Transmission The DRIVE range can be selected when towing. How- ever, if frequent shifting occurs while in this range, use the AutoStick威 feature to select a lower gear. NOTE: Using a lower gear 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” for the proper maintenance intervals. 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. RECREATIONAL TOWING (BEHIND MOTORHOME, ETC.) Recreational towing is not allowed. STARTING AND OPERATING 489 − Use speed control in flat terrain and with light loads to maximize fuel efficiency. 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. CAUTION! Towing this vehicle with any of its wheels on the ground can cause severe transmission and/or transfer case damage. Damage from improper towing is not covered by your new vehicle warranty. NOTE: This vehicle may be towed on a flatbed or vehicle trailer provided all four wheels are OFF the ground. WHAT TO DO IN EMERGENCIES CONTENTS 䡵 Hazard Warning Flashers . . . . . . . . . . . . . . . . 492 䡵 If Your Engine Overheats . . . . . . . . . . . . . . . . 492 䡵 Jacking And Tire Changing . . . . . . . . . . . . . . . 493 ▫ Run Flat Tires . . . . . . . . . . . . . . . . . . . . . . . 494 ▫ Jack Location . . . . . . . . . . . . . . . . . . . . . . . 494 ▫ Spare Tire Stowage . . . . . . . . . . . . . . . . . . . 495 ▫ Preparations For Jacking . . . . . . . . . . . . . . . 495 ▫ Jacking Instructions . . . . . . . . . . . . . . . . . . . 496 ▫ Road Tire Installation . . . . . . . . . . . . . . . . . 503 䡵 Jump-Starting . . . . . . . . . . . . . . . . . . . . . . . . 504 ▫ Preparations For Jump-Start . . . . . . . . . . . . . 505 ▫ Jump-Starting Procedure . . . . . . . . . . . . . . . 506 䡵 Freeing A Stuck Vehicle . . . . . . . . . . . . . . . . . 508 䡵 Emergency Tow Hooks — If Equipped . . . . . . 509 䡵 Shift Lever Override . . . . . . . . . . . . . . . . . . . 510 䡵 Towing A Disabled Vehicle . . . . . . . . . . . . . . . 511 492 WHAT TO DO IN EMERGENCIES HAZARD WARNING FLASHERS The Hazard Warning flasher switch is located on the switch bank just above the climate controls. Press the switch to turn on the Hazard Warning flasher. When the switch is activated, all directional 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, place the transmission in NEUTRAL, but do not increase the engine idle speed. 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. • 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. 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. 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. JACKING AND TIRE CHANGING WHAT TO DO IN EMERGENCIES 493 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. • Never start or run the engine while the vehicle is on a jack. (Continued) 494 WHAT TO DO IN EMERGENCIES WARNING! (Continued) • 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. Run Flat Tires This vehicle is equipped with a compact spare along with run flat tires. Although the tires are designed with a “run flat” feature that allows the vehicle to be driven approxi- mately 50 miles (80 km) at 55 mph (88 km/h). immediate service should be obtained. NOTE: The compact spare tire is to be used fro rear wheel(s) only. For a flat front tire, move the rear tire to the front and use the compact spare on the rear. WARNING! • Do not exceed 50 mph (80 km/h) if the “Tire Pressure Monitoring Telltale Light” is illuminated. Vehicle handling and braking may be reduced. You could have a collision and be severely or fatally injured. • Do not tow a trailer when using the compact spare tire. Jack Location The scissor-type jack and tire changing tools are located in rear cargo area, below the load floor. WHAT TO DO IN EMERGENCIES 495 Preparations For Jacking 1. Park the vehicle on a firm, level surface. Avoid ice or slippery surfaces. WARNING! Do not attempt to change a tire on the side of the vehicle closest to moving traffic, pull far enough off the road to avoid being hit when operating the jack or changing the wheel. Jack Storage Location Spare Tire Stowage The spare tire is stowed under the load floor in the rear cargo area and is secured to the body with a special wing nut. 2. Turn on the Hazard Warning flasher. 3. Set the parking brake. 4. Place the shift lever into PARK. 5. Turn the ignition OFF. 496 WHAT TO DO IN EMERGENCIES 6. 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. 7. For vehicle equipped with Quadra-Lift威 refer to “Quadra-Lift — If Equipped” in “Starting And Operat- ing” for further information on disabling automatic leveling. 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 • Set the parking brake firmly and set an automatic • Never start or run the engine with the vehicle on a transmission in PARK. be raised. jack. (Continued) WARNING! (Continued) jack. • Do not let anyone sit in the vehicle when it is on a • Do not get under the vehicle when it is on a jack. • Only use the jack in the positions indicated and • If working on or near a roadway, be extremely • To assure that spare tires, flat or inflated, are securely stowed, spares must be stowed with the valve stem facing the ground. for lifting this vehicle during a tire change. careful of motor traffic. WHAT TO DO IN EMERGENCIES 497 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 storage. 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. Jack Warning Label 498 WHAT TO DO IN EMERGENCIES 3. Assemble the jack and jacking tools. Jack and Tool Assembly CAUTION! Do not attempt to raise vehicle by jacking on loca- tions other than those indicated in the Jacking In- structions for this vehicle. Jacking Locations 4. For the front axle, place the jack on the body flange just behind the front tire as indicated by the triangular lift point symbol on the sill molding. Do not raise the vehicle until you are sure the jack is fully engaged. WHAT TO DO IN EMERGENCIES 499 Lift Point Symbol On Sill Molding Front Jacking Location 500 WHAT TO DO IN EMERGENCIES 5. For a rear tire, place the jack in the slot on the rear tie-down bracket, just forward of the rear tire (as indi- cated by the triangular lift point symbol on the sill molding). Do not raise the vehicle until you are sure the jack is fully engaged. Rear Jacking Location 6. Raise the vehicle by turning the jack screw clockwise. 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. Lift Point Symbol On Sill Molding WARNING! Raising the vehicle higher than necessary can make the vehicle less stable. It could slip off the jack and hurt someone near it. Raise the vehicle only enough to remove the tire. 7. Remove the lug nuts and wheel. 8. Position the spare wheel/tire on the vehicle and install the lug nuts with the cone-shaped end toward the wheel. Lightly tighten the nuts. CAUTION! Be sure to mount the spare tire with the valve stem facing outward. The vehicle could be damaged if the spare tire is mounted incorrectly. WHAT TO DO IN EMERGENCIES 501 Mounting Spare Tire WARNING! To avoid the risk of forcing the vehicle off the jack, do not tighten the wheel nuts fully until the vehicle has been lowered. Failure to follow this warning may result in personal injury. 502 WHAT TO DO IN EMERGENCIES 9. Lower the vehicle by turning the jack screw counter- clockwise, and remove the jack and wheel blocks. 10. 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 wheel nut tightness is 110 ft lbs (150 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. 11. Lower the jack to the fully closed position and return it and the tools to the proper positions in the foam tray. 12. Remove the small center cap and securely store the road wheel in the cargo area. Stowed Spare 13. Have the aluminum road wheel and tire repaired as soon as possible, properly secure the spare tire with the special wing nut torqued to 3.7 ft-lbs (5 N·m), reinstall the jack and tool kit foam tray, and latch the rear load floor cover. WARNING! WARNING! WHAT TO DO IN EMERGENCIES 503 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. Have the deflated (flat) tire repaired or replaced immediately. 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. To avoid the risk of forcing the vehicle off the jack, do not tighten the wheel 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 110 ft/lbs (150 N·m). If in doubt about the correct tightness, have them checked with a torque wrench by your authorized dealer or service station. 504 WHAT TO DO IN EMERGENCIES 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. JUMP-STARTING 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 under the passen- ger’s front seat. There are remote locations located under the hood to assist in jump-starting. Remote Battery Posts 1 — Remote Positive (+) Post (covered with protective cap) 2 — Remote Negative (-) Post WHAT TO DO IN EMERGENCIES 505 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. 1. Set the parking brake, shift the automatic transmission into PARK and turn the ignition to LOCK. 2. Turn off the heater, radio, and all unnecessary electri- cal accessories. 506 WHAT TO DO IN EMERGENCIES 3. Remove the protective cover over the remote positive (+) battery post. Pull upward on the cover to remove it. 4. 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 remote 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 the remote negative (-) post of the vehicle with the discharged battery. 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. Once the engine is started, remove the jumper cables in the reverse sequence: 6. Disconnect the negative (-) jumper cable from the remote negative (-) post of the discharged vehicle. 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. WHAT TO DO IN EMERGENCIES 507 9. Disconnect the positive (+) end of the jumper cable from the remote positive (+) post of the discharged vehicle. 10. Reinstall the protective cover over the remote posi- tive (+) battery 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. 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. 508 WHAT TO DO IN EMERGENCIES FREEING A STUCK VEHICLE If the vehicle becomes stuck in snow, sand or mud, it can often be moved by a rocking motion. Move the shift lever rhythmically between DRIVE and REVERSE while ap- plying slight pressure to the accelerator. In general, the least amount of accelerator pedal pressure to maintain the rocking motion without spinning the wheels or racing the engine is most effective. 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. CAUTION! • When “rocking” a stuck vehicle by moving be- tween DRIVE and REVERSE, do not spin the wheels faster than 15 mph (24 km/h), or drivetrain 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 transmission shifting occurring). 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. EMERGENCY TOW HOOKS — IF EQUIPPED If your vehicle is equipped with tow hooks, there will be one in the rear and two mounted on the front of the vehicle. The rear hook will be located on the driver’s side of the vehicle. WHAT TO DO IN EMERGENCIES 509 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. WARNING! • Chains are not recommended 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. 510 WHAT TO DO IN EMERGENCIES 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. Firmly apply the parking brake. 2. Turn the engine OFF. 3. Remove the rubber liner from the cupholder (located next to the shifter on the center console). 4. Using a screwdriver or similar tool, carefully remove the shift lever override access cover, located on the bottom of the cupholder. Shift Lever Override Access Cover 5. Press and maintain firm pressure on the brake pedal. 6. Using the screwdriver or similar tool, press and hold the shift lock 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 and install the rubber liner into the cupholder. WHAT TO DO IN EMERGENCIES 511 TOWING A DISABLED VEHICLE The manufacturer requires towing your vehicle with all four wheels OFF the ground using a flatbed. CAUTION! • Towing this vehicle using any other method could result in extensive damage to the transfer case and/or transmission. • Such damage is not covered by the New Vehicle Limited Warranty. MAINTAINING YOUR VEHICLE CONTENTS 䡵 Engine Compartment — 6.4L . . . . . . . . . . . . . 515 䡵 Onboard Diagnostic System – OBD II . . . . . . . 516 ▫ Loose Fuel Filler Cap Message . . . . . . . . . . . 516 䡵 Emissions Inspection And Maintenance Programs . . . . . . . . . . . . . . . . . . . . . . . . . . . . 517 䡵 Replacement Parts . . . . . . . . . . . . . . . . . . . . . 518 䡵 Dealer Service . . . . . . . . . . . . . . . . . . . . . . . . 519 䡵 Maintenance Procedures . . . . . . . . . . . . . . . . . 519 . . . . . . . . . . . . . . . . . . . . . . . . . 520 ▫ Engine Oil ▫ Engine Oil Filter . . . . . . . . . . . . . . . . . . . . . 523 ▫ Engine Air Cleaner Filter . . . . . . . . . . . . . . . 523 ▫ Maintenance-Free Battery . . . . . . . . . . . . . . 524 ▫ Air Conditioner Maintenance . . . . . . . . . . . . 525 ▫ Body Lubrication . . . . . . . . . . . . . . . . . . . . 526 ▫ Windshield Wiper Blades . . . . . . . . . . . . . . . 527 ▫ Adding Washer Fluid . . . . . . . . . . . . . . . . . 529 ▫ Exhaust System . . . . . . . . . . . . . . . . . . . . . 530 ▫ Cooling System . . . . . . . . . . . . . . . . . . . . . 533 514 MAINTAINING YOUR VEHICLE ▫ Brake System . . . . . . . . . . . . . . . . . . . . . . . 538 ▫ Front/Rear Axle Fluid . . . . . . . . . . . . . . . . . 540 ▫ Transfer Case . . . . . . . . . . . . . . . . . . . . . . . 541 ▫ Automatic Transmission . . . . . . . . . . . . . . . 542 ▫ Appearance Care And Protection From Corrosion . . . . . . . . . . . . . . . . . . . . . . . . . . 543 䡵 Fuses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 548 ▫ Totally Integrated Power Module . . . . . . . . . 548 䡵 Vehicle Storage . . . . . . . . . . . . . . . . . . . . . . . 554 䡵 Replacement Bulbs . . . . . . . . . . . . . . . . . . . . 554 䡵 Bulb Replacement . . . . . . . . . . . . . . . . . . . . . 555 ▫ High Intensity Discharge Headlamps (HID) – If Equipped . . . . . . . . . . . . . . . . . . . . . . . . 555 ▫ Halogen Headlamps – If Equipped . . . . . . . . 556 ▫ Front Turn Signal . . . . . . . . . . . . . . . . . . . . 556 ▫ Front Fog Lamps . . . . . . . . . . . . . . . . . . . . 556 ▫ Rear Tail, Stop, Turn Signal, And Backup Lamps . . . . . . . . . . . . . . . . . . . . . . . . . . . . 558 ▫ Rear Liftgate Mounted Tail Lamp . . . . . . . . . 558 ▫ Center High-Mounted Stop Lamp (CHMSL) . . . . . . . . . . . . . . . . . . . . . . . . . . 559 ▫ Rear License Lamp . . . . . . . . . . . . . . . . . . . 560 䡵 Fluid Capacities . . . . . . . . . . . . . . . . . . . . . . 560 䡵 Fluids, Lubricants, And Genuine Parts . . . . . . . 561 ▫ Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . 561 ▫ Chassis . . . . . . . . . . . . . . . . . . . . . . . . . . . 562 ENGINE COMPARTMENT — 6.4L MAINTAINING YOUR VEHICLE 515 1 — Totally Integrated Power Module (Fuses) 2 — Engine Oil Dipstick 3 — Engine Oil Fill 4 — Brake Fluid Reservoir 5 — Washer Fluid Reservoir 6 — Air Cleaner Filter 7 — Power Steering Fluid Reservoir 8 — Coolant Pressure Cap (Radiator) 9 — Engine Coolant Reservoir 516 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 soon as possible. CAUTION! • Prolonged driving with the MIL 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 performed. • If the MIL is flashing while the engine is running, severe catalytic converter damage and power loss will soon occur. Immediate service is required. Loose Fuel Filler Cap Message If the vehicle diagnostic system determines that the fuel filler cap is loose, improperly installed, or damaged, a loose gascap indicator will display in the EVIC telltale display area. Refer to “Electronic Vehicle Information Center (EVIC)” in “Understanding Your Instrument Panel” for further information. Tighten the fuel filler cap properly and press the SELECT button to turn off the message. If the problem continues, the message will appear the next time the vehicle is started. A loose, improperly installed, or damaged fuel filler cap may also turn on the Malfunction Indicator Light (MIL). 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. MAINTAINING YOUR VEHICLE 517 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. Turn the ignition switch to the ON position, but do not crank or start the engine. 2. If you crank or start the engine, you will have to start this test over. 3. As soon as you turn the ignition switch to the ON position, you will see the MIL symbol come on as part of a normal bulb check. 518 MAINTAINING YOUR VEHICLE 4. Approximately 15 seconds later, one of two things will happen: a. The MIL will flash for about 10 seconds and then return to being fully illuminated until you turn OFF the ignition 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 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, if the MIL is illuminated during normal vehicle operation you should have 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. 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.

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2012 Jeep Grand Cherokee SRT8 Owners Manual