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2021 RAM 1500 Owners Manual - VEHICLE MAINTENANCE



VEHICLE MAINTENANCE

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

Intentional tampering with emissions control systems may void your warranty and could result in civil penalties being assessed against you.

8

ENGINE OIL — GAS ENGINE

Engine Oil Selection — Gasoline Engine For best performance and maximum protection under all types of operating conditions, FCA only

recommends engine oils that are API Certified

and meet the requirements of FCA Material Standard MS-6395.

Hemi engines (5.7L) at times can tick right after startup and then quiet down after approxi- mately 30 seconds. This is normal and will not harm the engine. This characteristic can be caused by short drive cycles. For example, if the vehicle is started then shut off after driving a short distance. Upon restarting, you may experi- ence a ticking sound. Other causes could be if the vehicle is unused for an extended period of time, incorrect oil, extended oil changes or extended idling. If the engine continues to tick or if the Malfunction Indicator Light (MIL) comes on, see the nearest authorized dealer.

Engine Oil Selection — Diesel Engine

For best performance and maximum protection under all types of operating conditions, FCA recommends engine oils that meet the requirements of FCA Material Standard

MS-12991, and that are API SN certified and meet the requirements of FCA LLC.

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

This symbol certifies 0W-20, 5W-20, 0W-30, 5W-30 and 10W-30 engine oils.

You may use synthetic engine oils provided the recommended oil quality requirements are met, and the recommended maintenance intervals for oil and filter changes are followed.

Synthetic engine oils which do not have both the engine oil certification mark and the correct SAE viscosity grade number should not be used.

FCA strongly recommends against the addition of any additives (other than leak detection dyes) to the engine oil. Engine oil is an engineered product and its performance may be impaired by supplemental additives.

Care should be taken in disposing of used engine oil and oil filters from your vehicle. Used oil and oil filters, indiscriminately discarded, can present a problem to the environment. Contact an authorized dealer, service station or governmental agency for advice on how and where used oil and oil filters can be safely discarded in your area.

ENGINE OIL FILTER

The engine oil filter should be replaced with a new filter at every engine oil change.

A full-flow type disposable oil filter should be used for replacement. The quality of replacement filters varies considerably. Only high quality Mopar certified filters should be used.

ENGINE AIR CLEANER FILTER

For the proper maintenance intervals

page 395.

Be sure to follow the “Severe Duty Conditions” maintenance interval if applicable.

The quality of replacement filters varies considerably. Only high quality Mopar certified filters should be used.

Inspect engine air cleaner filter for dirt and or debris, if you find evidence of either dirt or debris you should change your engine air cleaner filter.

    With suitable tool fully loosen (six) fasteners on the engine air cleaner filter cover.

    — Fasteners
    — Engine Air Cleaner Filter Cover

    Lift the engine air cleaner filter cover to access the engine air cleaner filter.
    Remove the engine air cleaner filter from the housing assembly.

Engine Air Cleaner Filter 1 — Engine Air Cleaner Filter Cover 2 — Engine Air Cleaner Filter

8

Inspect and clean the housing if dirt or debris is present before replacing the engine air cleaner filter.

    Install the engine air cleaner filter into the housing assembly with the engine air cleaner filter inspection surface facing downward.
    Install the engine air cleaner filter cover onto the housing assembly.
    Tighten the fasteners (six) on the engine air cleaner filter assembly.

DRAINING FUEL/WATER SEPARATOR FILTER — DIESEL ENGINE

The fuel/water separator filter housing is located inside the frame rail, behind the left front wheel. The best access to this water drain valve is from under the vehicle.

(Continued)

If water is detected in the water separator while the engine is running, or while the ignition switch is in the ON/RUN position, the “Water In Fuel Indicator Light” will illuminate and an audible chime will be heard. At this point, you should stop the engine and drain the water from the filter housing.

1 — Water In Fuel Drain Valve

If the “Water In Fuel Indicator Light” comes on and a single chime is heard while you are driving, or with the ignition in the ON position, there may be a problem with your water separator wiring or sensor. See an authorized dealer for service.

Upon proper draining of the water from the fuel filter, the “Water In Fuel Indicator Light” will remain illuminated for approximately 10 seconds. If the water was drained while the engine was running, the “Water In Fuel Indicator Light” may remain on for approximately three minutes.

Care should be taken in disposing of used fluids from your vehicle. Used fluids, indiscriminately discarded, can present a problem to the envi- ronment. Contact an authorized dealer, service station, or government agency for advice on recycling programs and for where used fluids and filters can be properly disposed of in your area.

Drain the fuel/water separator filter when the “Water In Fuel Indicator Light” is ON. Within 10 minutes of vehicle shutdown, turn the filter drain valve (located on the bottom of the filter housing) counterclockwise to drain fuel/water, then turn the ignition switch to the ON position, and allow any accumulated water to drain.

Leave the drain valve open until all water and contaminants have been removed. When clean fuel is visible, close the drain valve by turning it clockwise, and turn the ignition switch to OFF.

If more than two ounces or 60 milliliters of fuel have been drained page 414.

UNDERBODY MOUNTED FUEL FILTER REPLACEMENT — DIESEL ENGINE

Using a fuel filter that does not meet FCA’s filtra- tion and water separating requirements can severely impact fuel system life and reliability. Under normal conditions the diesel fuel filter should be replaced every 20,000 miles (every other oil change). If the vehicle is being used in severe operating conditions, or In certain geographical areas of the country (Pennsyl- vania, New York, Ohio, Maryland, West Virginia, Arkansas, Oklahoma, Kansas, Iowa, Missouri

and Nebraska) due to fuel cleanliness’ issues, it’s recommended to replace the fuel filter every 10,000 miles.

1 — Water In Fuel Drain Valve 2 — Fuel Filter Access

    Turn engine off.
    Place a drain pan under the fuel filter assembly.
    Open the water drain valve, and let any accumulated water drain.
    Close the water drain valve.
    Remove bottom cover using a strap wrench. Rotate counterclockwise for removal. Remove the used o-ring and discard it.
    Remove the used filter cartridge from the housing and dispose of it according to your local regulations.
    Wipe the sealing surfaces of the lid and housing clean.
    Install a new o-ring into the ring groove on the filter housing and lubricate with clean engine oil.

PRIMING IF THE ENGINE HAS RUN OUT OF FUEL — DIESEL ENGINE

    Add a substantial amount of fuel to the tank, approximately 2 to 5 gal (8 L to 19 L).
    Press ignition switch twice without your foot on brake to put vehicle in ON/RUN position. This will activate the in tank fuel pump for approximately 30 seconds. Repeat this process twice.
    Start the engine using the “Normal Starting” procedure page 144.

The engine may run rough until the air is forced from all the fuel lines.

    Use of biodiesel mixture in excess of 20% can negatively impact the fuel filter's ability to separate water from the fuel, resulting in high pressure fuel system corrosion or damage.
    In addition, commercially available fuel addi- tives are not necessary for the proper opera- tion of your diesel engine.
    For extreme cold conditions, "Mopar Premium Diesel Fuel Treatment" is recom- mended to assist with cold starting.

INTERVENTION REGENERATION STRATEGY — MESSAGE PROCESS FLOW (DIESEL ENGINE)

This engine meets all required diesel engine emissions standards. To achieve these emissions standards, your vehicle is equipped with a state-of-the-art engine and exhaust system. These systems are seamlessly integrated into your vehicle and managed by the Powertrain Control Module (PCM). The PCM manages engine combustion to allow the exhaust system’s catalyst to trap and burn Particulate Matter (PM) pollutants, with no input or interaction on your part.

Additionally, your vehicle has the ability to alert you to additional maintenance required on your vehicle or engine page 114.

DIESEL EXHAUST FLUID

Diesel Exhaust Fluid (DEF) sometimes known simply by the name of its active component, UREA—is a key component of Selective Catalytic Reduction (SCR) systems, which help diesel vehicles meet stringent emission regulations. DEF is a liquid reducing agent that reacts with engine exhaust in the presence of a catalyst to convert smog-forming nitrogen oxides (NOx) into harmless nitrogen and water vapor.

Refer to Engine Fluids And Lubricants

page 475 for further information.

AIR CONDITIONER MAINTENANCE

For best possible performance, your air conditioner should be checked and serviced by an authorized dealer at the start of each warm season. This service should include cleaning of the condenser fins and a performance test.

Drive belt tension should also be checked at this time.

R–1234yf Air Conditioning Refrigerant is a hydrofluoroolefin (HFO) that is endorsed by the Environmental Protection Agency and is an ozone-friendly substance with a low

global-warming potential. It is recommended that air conditioning service be performed by an authorized dealer using recovery and recycling equipment.

Use only FCA approved A/C system PAG compressor oil, and refrigerants.

For the proper maintenance intervals

page 395.

8

The cabin air filter is located in the fresh air inlet behind the glove compartment. Perform the following procedure to replace the filter:

    Open the glove compartment and remove all contents.
    With the glove compartment door open, remove the glove compartment tension tether and tether clip by sliding the clip toward the face of the glove compartment door. Lift the clip out of glove compartment door and release into dash panel.

    — Glove Compartment Door
    — Glove Compartment Tension Tether

    There are glove compartment travel stops on both sides of the glove compartment door. Push inward on both sides of the glove compartment to release the glove compartment travel stops.

    — Glove Compartment Travel Stop
    — Glove Compartment Tension Tether 3 — Glove Compartment Door

    Disengage the glove compartment door from its hinges by opening the glove compartment past the travel stop and pulling it toward you.

    Remove the filter cover by pushing in on the finger tabs on each end of the filter cover.

Filter Cover Removal

1 — Finger Tabs

    Remove the cabin air filter by pulling it straight out of the housing.

    Install the cabin air filter with the arrow on the filter pointing toward the floor. When installing the filter cover, press on each end until you hear an audible click.

    Reinstall the glove compartment on the hinges.

    Pull the tension tether outward and reinstall the glove compartment past the travel stops by pushing in on the glove compartment sides.

    — Glove Compartment Travel Stop
    — Glove Compartment Tension Tether 3 — Glove Compartment Door

Ensure the glove compartment door hinges and glove compartment travel stops are fully engaged.

    Reattach the glove compartment tension tether by inserting the tether clip in the glove compartment and sliding the clip away from the face of the glove compartment door.

ACCESSORY DRIVE BELT INSPECTION

8

When inspecting accessory drive belts, small

cracks that run across the ribbed surface of the belt from rib to rib, are considered normal. This is not a reason to replace the belt. However, cracks running along a rib (not across) are not normal. Any belt with cracks running along a rib must be replaced. Also have the belt replaced if it has excessive wear, frayed cords or severe glazing.

Conditions that would require replacement:

    Rib chunking (one or more ribs has sepa- rated from belt body)
    Rib or belt wear
    Longitudinal belt cracking (cracks between two ribs)
    Belt slips
    “Groove jumping" (belt does not maintain correct position on pulley)
    Belt broken
    Noise (objectionable squeal, squeak, or rumble is heard or felt while drive belt is in operation)

Identify and correct problem before new belt is installed.

If your vehicle is equipped with a Stop/Start, belt must be replaced with an OEM grade Mopar belt.

Some conditions can be caused by a faulty component such as a belt pulley. Belt pulleys should be carefully inspected for damage and proper alignment.

Belt replacement on some models requires the use of special tools, we recommend having your vehicle serviced at an authorized dealer.

BODY LUBRICATION

Locks and all body pivot points, including such items as seat tracks, door hinge pivot points and rollers, liftgate, tailgate, decklid, sliding doors and hood hinges, should be lubricated periodically. Use a lithium-based grease, such as Mopar Spray White Lube to assure quiet, easy operation and to protect against rust and wear. Prior to the application of any lubricant, the parts concerned should be wiped clean to remove dust and grit; after lubricating excess oil and grease should be removed. Particular

attention should also be given to hood latching components to ensure proper function. When performing other underhood services, the hood latch release mechanism, and safety catch should be cleaned and lubricated.

The external lock cylinders should be lubricated twice a year, preferably in the Autumn and Spring. Apply a small amount of a high quality lubricant, such as Mopar Lock Cylinder Lubricant directly into the lock cylinder.

WINDSHIELD WIPER BLADES

Clean the rubber edges of the wiper blades and the windshield periodically with a sponge or soft cloth and a mild nonabrasive cleaner. This will remove accumulations of salt or road film.

Operation of the wipers on dry glass for long periods may cause deterioration of the wiper blades. Always use washer fluid when using the wipers to remove salt or dirt from a dry windshield.

Avoid using the wiper blades to remove frost or ice from the windshield. Keep the blade rubber out of contact with petroleum products such as engine oil, gasoline, etc.

Life expectancy of wiper blades varies depending on geographical area and frequency of use. If chattering, marks, water lines or wet spots are present, clean the wiper blades or replace as necessary.

The wiper blades and wiper arms should be inspected periodically, not just when wiper performance problems are experienced. This inspection should include the following points:

    Wear or uneven edges
    Foreign material
    Hardening or cracking
    Deformation or fatigue

If a wiper blade or wiper arm is damaged, replace the affected wiper arm or blade with a new unit. Do not attempt to repair a wiper arm or blade that is damaged.

    Lift the wiper arm to raise the wiper blade off of the glass, until the wiper arm is in the full up position.

1 — Wiper Blade 2 — Wiper Arm 3 — Release Tab

    To disengage the wiper blade from the wiper arm, press the release tab on the wiper blade and while holding the wiper arm with one hand, slide the wiper blade down towards the base of the wiper arm.

    — Wiper Blade
    — Wiper Arm J Hook
    — J Hook Retainer 8
    With the wiper blade disengaged, remove the wiper blade from the wiper arm.
    Gently lower the wiper arm onto the glass.
    Lift the wiper arm off of the glass, until the wiper arm is in the full up position.
    Position the wiper blade near the hook on the tip of the wiper arm.
    Slide the wiper blade up into the hook on the wiper arm, latch engagement will be accompanied by an audible click.
    Gently lower the wiper blade onto the glass.

EXHAUST SYSTEM

The best protection against carbon monoxide entry into the vehicle body is a properly maintained engine exhaust system.

If you notice a change in the sound of the exhaust system; or if the exhaust fumes can be detected inside the vehicle; or when the underside or rear of the vehicle is damaged; have an authorized technician inspect the complete exhaust system and adjacent body areas for broken, damaged, deteriorated, or mispositioned parts. Open seams or loose connections could permit exhaust fumes to seep into the passenger compartment. In addition, have the exhaust system inspected

each time the vehicle is raised for lubrication or oil change. Replace as required.

(Continued)

Under normal operating conditions, the catalytic converter will not require maintenance. However, it is important to keep the engine properly tuned to assure proper catalyst operation and prevent possible catalyst damage.

Intentional tampering with emissions control systems can result in civil penalties being assessed against you.

In unusual situations involving grossly malfunctioning engine operation, a scorching odor may suggest severe and abnormal catalyst

overheating. If this occurs, stop the vehicle, turn off the engine and allow it to cool. Service, including a tune-up to manufacturer's specifications, should be obtained immediately.

To minimize the possibility of catalytic converter damage:

    Do not interrupt the ignition when the trans- mission is in gear and the vehicle is in motion.
    Do not try to start the vehicle by pushing or towing the vehicle.
    Do not idle the engine with any ignition components disconnected or removed, such as when diagnostic testing, or for prolonged periods during very rough idle or malfunc- tioning operating conditions.

COOLING SYSTEM Engine Coolant Checks

Check the engine coolant (antifreeze) protection every 12 months (before the onset of freezing weather, where applicable). If the engine coolant is dirty or rusty in appearance, the system should be drained, flushed and refilled with fresh coolant. Check the front of the A/C condenser (if equipped) or radiator for any accumulation of bugs, leaves, etc. If dirty, clean by gently spraying water from a garden hose vertically down the face of the A/C condenser (if equipped) or the back of the radiator core.

Check the engine cooling system hoses for brittle rubber, cracking, tears, cuts and tightness of the connection at the coolant recovery bottle and radiator. Inspect the entire system for leaks.

DO NOT REMOVE THE COOLANT PRESSURE CAP WHEN THE COOLING SYSTEM IS HOT.

Some vehicles require special tools to add coolant properly. Failure to fill these systems properly could lead to severe internal engine damage. If any coolant is needed to be added to the system please contact an authorized dealer.

If the engine coolant (antifreeze) is dirty or contains visible sediment, have an authorized dealer clean and flush with OAT coolant (conforming to MS.90032).

For the proper maintenance intervals

page 395.

For further information page 475. NOTE:

    Mixing of engine coolant (antifreeze) other than specified Organic Additive Technology (OAT) engine coolant, may result in engine damage and may decrease corrosion protec- tion. OAT engine coolant is different and should not be mixed with Hybrid Organic Additive Technology (HOAT) engine coolant or any “globally compatible” coolant. If a

non-OAT engine coolant is introduced into the cooling system in an emergency, the cooling system will need to be drained, flushed, and refilled with fresh OAT coolant (conforming to MS.90032), by an authorized dealer as soon as possible.

    Do not use water alone or alcohol-based engine coolant products. Do not use addi- tional rust inhibitors or anti-rust products, as they may not be compatible with the radiator engine coolant and may plug the radiator.
    This vehicle has not been designed for use with propylene glycol-based engine coolant. Use of propylene glycol-based engine coolant is not recommended.
    Some vehicles require special tools to add coolant properly. Failure to fill these systems properly could lead to severe internal engine damage. If any coolant is needed to be added to the system please contact an authorized dealer.

Your vehicle has been built with an improved engine coolant (OAT coolant conforming to MS.90032) that allows extended maintenance intervals. This engine coolant (antifreeze) can

be used up to 10 years or 150,000 miles (240,000 km) before replacement. To prevent reducing this extended maintenance period, it is important that you use the same engine coolant (OAT coolant conforming to MS.90032) throughout the life of your vehicle.

Please review these recommendations for using Organic Additive Technology (OAT) engine coolant that meets the requirements of FCA Material Standard MS.90032. When adding engine coolant:

    We recommend using Mopar® Antifreeze/ Coolant 10 Year/150,000 Mile (240,000 km) Formula OAT that meets the requirements of FCA Material Standard MS.90032.
    Mix a minimum solution of 50% OAT engine coolant that meets the requirements of FCA Material Standard MS.90032 and distilled water. Use higher concentrations (not to exceed 70%) if temperatures below −34°F (−37°C) are anticipated. Please contact an authorized dealer for assistance.
    Use only high purity water such as distilled or deionized water when mixing the water/ engine coolant solution. The use of lower quality water will reduce the amount of corro- sion protection in the engine cooling system.
    It is the owner's responsibility to maintain the proper level of protection against freezing according to the temperatures occurring in the area where the vehicle is operated.
    Some vehicles require special tools to add coolant properly. Failure to fill these systems properly could lead to severe internal engine damage. If any coolant is needed to be added to the system, please contact an authorized dealer.
    Mixing engine coolant types is not recom- mended and can result in cooling system damage. If HOAT and OAT coolant are mixed in an emergency, have an authorized dealer drain, flush, and refill with OAT coolant (conforming to MS.90032) as soon as possible.

The cap must be fully tightened to prevent loss of engine coolant (antifreeze), and to ensure that engine coolant will return to the radiator from the coolant expansion bottle/recovery tank (if equipped).

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

Used ethylene glycol-based coolant (antifreeze) is a regulated substance requiring proper disposal. Check with your local authorities to determine the disposal rules for your community. To prevent ingestion by animals or children, do not store ethylene glycol-based coolant in open containers or allow it to remain in puddles on the ground, clean up any ground spills immediately. If ingested, seek emergency assistance immediately.

Checking Coolant Level — 3.6L Engine The level of the coolant in the pressurized coolant bottle should be between the “MIN” and

“MAX” range on the bottle when the engine is

cold.

The radiator normally remains completely full, so there is no need to remove the cap unless checking for coolant freeze point or replacing engine coolant (antifreeze). Advise your service attendant of this. As long as the engine operating temperature is satisfactory, the coolant bottle need only be checked once a month. When additional engine coolant is needed to maintain the proper level, it should be added to the coolant bottle. Do not overfill.

With the engine off and cold, the level of the

engine coolant should be between the ADD and 8

SAFE range on the dipstick.

To check the coolant level:

    Open the coolant reservoir.
    Lift and remove the plastic dipstick from the reservoir neck.

    Check the coolant level on the dipstick.

The radiator normally remains completely full, so there is no need to remove the radiator cap unless checking for engine coolant (antifreeze) freeze point or replacing engine coolant. Advise your service attendant of this. As long as the engine operating temperature is satisfactory, the coolant bottle need only be checked once a month.

When additional engine coolant is needed to maintain the proper level, it should be added to the coolant bottle. Do not overfill.

When the vehicle is stopped after a few miles/ kilometers of operation, you may observe vapor coming from the front of the engine compart- ment. This is normally a result of moisture from rain, snow, or high humidity accumulating on the radiator and being vaporized when the ther- mostat opens, allowing hot engine coolant (anti- freeze) to enter the radiator.

If an examination of your engine compartment shows no evidence of radiator or hose leaks, the vehicle may be safely driven. The vapor will soon dissipate.

    Do not overfill the coolant expansion bottle.
    Check the coolant freeze point in the radiator and in the coolant expansion bottle. If engine coolant needs to be added, the contents of the coolant expansion bottle must also be protected against freezing.
    If frequent engine coolant additions are required, the cooling system should be pres- sure tested for leaks.

    Maintain engine coolant concentration at a minimum of 50% OAT coolant (conforming to MS.90032) and distilled water for proper corrosion protection of your engine which contains aluminum components.
    Make sure that the coolant expansion bottle overflow hoses are not kinked or obstructed.
    Keep the front of the radiator clean. If your vehicle is equipped with air conditioning, keep the front of the condenser clean.
    Do not change the thermostat for Summer or Winter operation. If replacement is ever necessary, install ONLY the correct type ther- mostat. Other designs may result in unsatis- factory engine cooling performance, poor gas mileage, and increased emissions.

CHARGE AIR COOLER — INTER-COOLER (DIESEL ENGINE)

The charge air cooler is positioned in front of the radiator and the air conditioner condenser. Air enters the engine through the air cleaner and passes through the turbocharger, where it is pressurized. This pressurized air rapidly reaches high temperature. The air is then directed through a hose to the charge air cooler

and through another hose to the intake manifold of the engine. This cooling process enables more efficient burning of fuel resulting in fewer emissions.

To guarantee optimum performance of the system, keep the surfaces of the charge air cooler, condenser and radiator clean and free of debris. Periodically check the hoses leading to and from the charge air cooler for cracks or loose clamps resulting in loss of pressure and reduced engine performance.

BRAKE SYSTEM

In order to ensure brake system performance, all brake system components should be inspected periodically page 395.

Fluid Level Check — Brake Master Cylinder The fluid level of the brake master cylinder should be checked whenever the vehicle is

serviced, or immediately if the brake system

warning light is on. If necessary, add fluid to bring level within the designated marks on the side of the reservoir of the brake master cylinder. Be sure to clean the top of the master cylinder area before removing cap. With disc brakes, fluid level can be expected to fall as the brake pads wear. Brake fluid level should be checked when pads are replaced. If the brake fluid is abnormally low, check the system for leaks page 478.

(Continued)

AUTOMATIC TRANSMISSION

FCA strongly recommends against using any special additives in the transmission. Automatic Transmission Fluid (ATF) is an engineered product and its performance may be impaired by supplemental additives. Therefore, do not add any fluid additives to the transmission.

Avoid using transmission sealers as they may adversely affect seals.

The fluid level is preset at the factory and does not require adjustment under normal operating conditions. Routine fluid level checks are not required, therefore the transmission has no dipstick. An authorized dealer can check your transmission fluid level using special service tools.

If you notice fluid leakage or transmission malfunction, visit an authorized dealer immediately to have the transmission fluid level checked. Operating the vehicle with an improper fluid level can cause severe transmission damage.

Under normal operating conditions, the fluid installed at the factory will provide satisfactory lubrication for the life of the vehicle.

Routine fluid and filter changes are not required. However, change the fluid and filter if the fluid becomes contaminated (with water, etc.), or if the transmission is disassembled for any reason.

It is important to use the proper transmission fluid to ensure optimum transmission

performance and life. Use only the recommended transmission fluid page 478. It is important to maintain the transmission fluid at the correct level using the recommended fluid. No chemical flushes should be used in any transmission; only the approved lubricant should be used.

REAR AXLE AND 4X4 FRONT DRIVING AXLE FLUID LEVEL

For normal service, periodic fluid level checks are not required. When the vehicle is serviced for other reasons the exterior surfaces of the axle assembly should be inspected. If gear oil leakage is suspected inspect the fluid level

page 478. This inspection should be made

with the vehicle in a level position.

The fluid level should be even with the bottom of the fill hole (within 1/4 in (6.4 mm) of edge of hole) for the front axle and rear axle.

For the proper maintenance intervals

page 395.

For further information page 478.

The presence of water in the gear lubricant will result in corrosion and possible failure of differ- ential components. Operation of the vehicle in water, as may be encountered in some

off-highway types of service, will require draining and refilling the axle to avoid damage.

Rear axles equipped with a Limited Slip Differential require that 5 oz. (148 ml) Mopar Limited Slip Additive be added to the gear lubricant page 478. The Mopar Limited Slip Additive should be added to the gear lubricant whenever a fluid change is made to an axle equipped with a Limited Slip Differential.

When refilling a limited slip differential axle which requires a friction modification additive, the additive should be added before the gear lubricant to ensure proper additive fill.

TRANSFER CASE

This fluid level can be checked by removing the filler plug. The fluid level should be to the bottom edge of the filler plug hole (or within 1/8 inch of the bottom) with the vehicle in a level position.

For the proper maintenance intervals

page 395.

Use only the recommended fluid page 478.

FUSES

The fuses protect electrical systems against excessive current.

When a device does not work, you must check the fuse element inside the blade fuse for a break/melt.

Also, please be aware that when using power outlets for extended periods of time with the engine off may result in vehicle battery discharge.

    — Fuse Element
    — Blade Fuse with a good/functional fuse ele- ment
    — Blade fuse with a bad/not functional fuse el- ement (blown fuse)

The Power Distribution Center is located in the engine compartment near the battery. This center contains cartridge fuses, micro fuses, relays, and circuit breakers. A description of each fuse and component may be stamped on the inside cover, otherwise the cavity number of each fuse is stamped on the inside cover that corresponds to the following chart.

Cavity

Cartridge Fuse

Micro Fuse

Description

F01

25 Amp Clear

Fuel Pump Motor

F03

5 Amp Tan

MGU

F04

Spare

F05

Spare

8

Cavity

Cartridge Fuse

Micro Fuse

Description

F26

50 Amp Red

ESP Module

F27

30 Amp Pink

Front Wiper

F28

10 Amp Red

PCM / ECM

F29

40 Amp Green

ESP Module

F30

Spare

F31

Spare

F32

20 Amp Blue

ECM / PCM

F33

30 Amp Pink

Brake Vacuum Pump

F34

Spare

F35

10 Amp Red

PCM / ECM / Power Pack Unit (PPU) Motor Generator Unit (MGU) Wake Up / EPS / Active Tuned Mass Module (ATMM) / ESP

F36

Spare

F37

5 Amp Tan

R / S Output to iPDC

F38

10 Amp Red

DTCM / Active CL TEMP VLV

F39

15 Amp Red

MOD ATMM

F40

40 Amp Green

Starter

F41

10 Amp Red

IRCAM Heaters

F42

20 Amp Blue

AUX SWITCH #5 — If Equipped

F43

20 Amp Yellow

MGU Coolant Pump

F44

10 Amp Red

Trailer Camera

F45

10 Amp Red

ADCM — If Equipped

8

The Power Distribution Center is located under the drivers side instrument panel. This center contains cartridge fuses, micro fuses, relays, and circuit breakers. A description of each fuse and component may be stamped on the inside cover, otherwise the cavity number of each fuse is stamped on the inside cover that corresponds to the following chart.

Cavity

Cartridge Fuse

Micro Fuse

Description

F01

30 Amp Pink

Trailer Tow Receptacle

F03

20 Amp Yellow

Module Seat Heater Front (Pass)

F04

Spare

F05

20 Amp Yellow

Module PPU Cooling Fan

F06

Spare

F07

40 Amp Green

Mod CBC 3 PWR Locks

F08

Spare

8

Cavity

Cartridge Fuse

Micro Fuse

Description

F29

20 Amp Yellow

Mod CRSM (Heat Rear LT)

F30

30 Amp Pink

Mod DTCM / Mod Tailgate

F31

30 Amp Pink

Mod CBC 1 Interior Light

F32

20 Amp Yellow

RT Spot Lamp — If Equipped

F33

10 Amp Red

Assy Overhead Console / Switch 911 / Switch Assist / Heads Up Display (HUD)

F34

15 Amp Blue

Frt & RR Ventilated Seat Motor

F35

10 Amp Red

Mod Inverter / Mtr Sunshade Sunroof / Mtr Dual Sunroof / USB Charge Only

F36

40 Amp Green

Mod CBC 2 Exterior Light 1

F37

Spare

F38

Spare

F39

Spare

F40

20 Amp Blue

Dome Pursuit Vehicle — If Equipped

F41 A&B

15 Amp Blue

Lumbar Support & Pass SW / Mod ICS Sw Bank / HVAC Ctrl / Sw Bank Upper / Mod Ctrl Steering

F42 A&B

10 Amp Red

Mod Transfer Case Switch Module (TCSM) / SBW / Electric Park Brake SW / Overhead Console (OHC) SW / E-Call / Bank 3 SW / Seat LT & RT Vent / Mod Trailer A&B Tire Pressure / Mod Gateway Trailer

F43 A&B

10 Amp Red

Port Diagnostics / Mod CD / Front & Rear USB

F44

20 Amp Yellow

Radio / DCSD / Telematics Box Mod / Fleet Telematics Module (FTM)

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Cavity

Cartridge Fuse

Micro Fuse

Description

F63

Spare

F64

Spare

F65

10 Amp Red

Mod ORC

F66

10 Amp Red

Run Accessory Feed — If Equipped

BULB REPLACEMENT

See an authorized dealer for LED bulb replacement.

All of the inside bulbs are brass or glass-wedge base. Aluminum base bulbs are not approved.

Interior Bulbs

Bulb Name

Bulb Number

Overhead Console Lamps

TS 212–9

Dome Lamp

7679

NOTE:

For lighted switches, see an authorized dealer for replacement instructions.

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Exterior Bulbs

Bulb Name

Bulb Number

Front Side Marker (Halogen Reflector Headlamp)

W5W

Front Side Marker (LED Headlamps)

LED (Serviced at an authorized dealer)

Front Fog Lamps (Halogen Reflector Headlamp)

H11LL

Front Fog Lamps (LED Headlamps)

LED (Serviced at an authorized dealer)

Side Indicators (Front And Side View Mirror)

LED (Serviced at an authorized dealer)

Base Rear Tail/Turn and Stop Lamp

7440LL/W21WLL

Premium Rear Tail/Turn/Backup and Stop Lamp

LED (Serviced at an authorized dealer)

Base Backup Lamp

7440/W21W

Center High Mounted Stop Lamp (CHMSL)

921

Cargo Lamp

921

Rear License Plate Lamp

LED (Serviced at an authorized dealer)

Base Turn Lamp

7440NA / WY21W

Base Quad: Low Beam Headlamp, High Beam Headlamp, Front Park And Turn — If Equipped

Low Beam

See below steps to replace:

    Open the hood.
    Disconnect and isolate the negative battery cable.
    Locate the low beam access cover, which

It may be necessary to remove/reposition Air Cleaner Assembly to access passenger side headlamp/side marker light bulbs.

    Disengage the bulb access cover by rotating counterclockwise.
    Disconnect the internal lamp wiring harness connector from the low beam bulb.

High Beam Headlight Cover

can be found on the back side of the headlamps.

    Rotate the bulb counterclockwise a quarter turn to unlock the bulb from the lamp.
    Pull the bulb straight out from the housing.
    Reverse the procedure for installation of new bulb and covers.

See below steps to replace:

    Open the hood.
    Disconnect and isolate the negative battery cable.
    Locate the high beam access cover, which can be found on the back side of the headlamps.

It may be necessary to remove/reposition Air Cleaner Assembly to access passenger side headlamp/side marker light bulbs.

    Reach behind the headlamp and disengage the access cover by rotating counter- clockwise.
    Disconnect the internal lamp wiring harness connector from the high beam bulb.

    Rotate the bulb counterclockwise a quarter turn to unlock the bulb from the lamp.
    Pull the bulb straight out from the housing.
    Reverse the procedure for installation of new bulb and cover.

See below steps to replace:

    Open the hood.
    Disconnect and isolate the negative battery cable.
    Locate the park and turn socket, which can be found on the back side of the headlamps.

    Reach behind the headlamp and unlock the park and turn socket from the lamp by rotating counterclockwise a quarter turn.
    Pull the bulb straight out from the housing.

    Separate the bulb from the socket without twisting.
    Reverse the procedure for installation of new bulb and covers.

See below steps to replace:

    Open the hood.
    Disconnect and isolate the negative battery cable.
    Locate the side marker lamp, which can be found on the back side of the headlamps.

    Disengage the side marker socket by rotating counterclockwise a quarter turn.
    Pull the socket and bulb straight out from the housing.
    Separate the bulb from the socket without twisting.
    Reverse the procedure for installation of new bulb and covers.

Fog Lamps — If Equipped

Please see an authorized dealer for service on LED and Halogen front fog lamps.

See below steps to replace:

    Reach under and behind the front fascia/ bumper to access the back of the front fog lamp housing.
    Disconnect the fog lamp wiring harness connector from the fog lamp bulb.

    Rotate the bulb counterclockwise a quarter turn to unlock the bulb from the housing.
    Pull the bulb straight out from the housing.
    Reverse the procedure to install the bulb and cover.

Rear Tail/Stop, Turn Signal And Backup Lamps See below steps to replace:

    Remove the two screws and push pins retainers that pass through the bed sheet metal.

    — Tail Lamp
    — Fasteners
    — Push - Pin Retainers

    Pull the outboard side of the lamp rearward far enough to unsnap the two receptacles on the outboard side of the lamp housing from the two plastic snap post retainers in the outer box side panel.

    Disconnect the wiring harness connectors from the bulb socket.

    Rotate the bulb socket counterclockwise a quarter turn to unlock it from the housing.
    Pull the bulb straight out of the socket.

    Reverse the procedure to install the bulb and housing.

Center High Mounted Stop Lamp (CHMSL) With Cargo Lamp

See below steps to replace:

    Remove the four screws holding the housing/lens to the body as shown.

    Separate the connector holding the housing and wiring harness to the body.

    Turn the desired bulb socket a quarter turn counterclockwise and remove the socket and bulb from housing.
    Pull the desired bulb straight from the socket.

    Outside Bulbs: Cargo Lamps
    Inside Bulb: Center High Mounted Stop Lamp
    Reverse the procedure for installation of bulbs and housing.

TIRE SAFETY INFORMATION

Tire Markings

    European — Metric tire sizing is based on European design standards. Tires designed to this standard have the tire size molded into the sidewall beginning with the section width. The letter "P" is absent from this tire size designation. Example: 215/65R15 96H.
    LT (Light Truck) — Metric tire sizing is based on US design standards. The size designation for LT-Metric tires is the same as for P-Metric tires except for the letters “LT” that are molded into the sidewall preceding the size designation. Example: LT235/85R16.
    Temporary spare tires are designed for temporary emergency use only. Temporary high pressure compact spare tires have the letter “T” or “S” molded into the sidewall preceding the size designation. Example: T145/80D18 103M.

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    High flotation tire sizing is based on US

design standards and it begins with the tire diameter molded into the sidewall. Example: 31x10.5 R15 LT.


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