engine coolant RAM CHASSIS CAB 2022 Owner's Guide

SERVICING AND MAINTENANCE357
Checking Coolant Level — 6.4L 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.
Cooling System Notes
NOTE:When the vehicle is stopped after a few miles/kilo -
meters of operation, you may observe vapor
coming from the front of the engine compartment.
This is normally a result of moisture from rain,
snow, or high humidity accumulating on the
radiator and being vaporized when the thermostat
opens, allowing hot engine coolant (antifreeze) 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 (antifreeze) 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 pressure
tested for leaks.
Maintain engine coolant concentration at a
minimum of 50% OAT coolant (conforming to
MS.90032) and distilled water for proper corro -
sion 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 neces -
sary, install ONLY the correct type thermostat.
Other designs may result in unsatisfactory
engine cooling performance, poor gas mileage,
and increased emissions.
CHARGE AIR COOLER — INTER-COOLER
The charge air cooler is positioned below 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.
The air entering the engine has been cooled by
about 50° to 100°F (10° to 38°C). 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.
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404TECHNICAL SPECIFICATIONS
ENGINE FLUIDS AND LUBRICANTS
6.4L GASOLINE ENGINE
Component Fluid, Lubricant, or Genuine Part
Engine Coolant We recommend using Mopar® Antifreeze/Coolant 10–Year/150,000 Mile
(240,000 km) Formula OAT (Organic Additive Technology).
Engine Oil We recommend using Mopar® API Certified SAE 0W-40 Full Synthetic Engine
Oil which meets the requirements of the manufacturer Material Standard
MS-A0921. Equivalent full synthetic SAE 0W-40 engine oil can be used but
must have the API Donut trademark Ú
page 342.
Engine Oil Filter We recommend using a Mopar® Engine Oil Filter. If a Mopar® Engine Oil Filter
is unavailable only use filters that meet or exceed SAE/USCAR-36 Filter
Performance Requirements.
Fuel Selection 87 Octane (R+M)/2 Method, 0-15% Ethanol (Do not use E-85).

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TECHNICAL SPECIFICATIONS405
6.7L DIESEL ENGINE
Component Fluid, Lubricant, or Genuine Part
Engine Coolant We recommend using Mopar® Antifreeze/Coolant 10 Year/150,000 Mile
(240,000 km) Formula OAT (Organic Additive Technology).
Engine Oil In ambient temperatures above 0°F (-18°C), we recommend using 10W-30
engine oil such as Mopar®, Shell Rotella and Shell Rimula that meets the
manufacturer Material Standard MS-10902 and the API CK-4 engine oil
category is required. Products meeting Cummins® CES 20081 may also be
used. The identification of these engine oils is typically located on the back of
the oil container.
In ambient temperatures below 0°F (-18°C), we recommend using 5W-40
synthetic
engine oil such as Mopar®, Shell Rotella and Shell Rimula that
meets the manufacturer Material Standard MS-10902 and the API CK-4
engine oil category is required.
Engine Oil Filter We recommend using a Mopar® Engine Oil Filter. If a Mopar® Engine Oil Filter
is unavailable only use filters that meet or exceed SAE/USCAR-36 Filter
Performance Requirements.
Fuel Filters We recommend using Mopar® Fuel Filter. Must meet 3 micron rating (engine
mounted filter). Must meet 5 micron rating (chassis mounted filter).
Using a
fuel filter that does not meet the manufacturer’s filtration and water
separating requirements can severely impact fuel system life and reliability.
Crankcase Ventilation Filter We recommend using Mopar® CCV Filter.
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406TECHNICAL SPECIFICATIONS
(Continued)
Fuel Selection
Use good quality diesel fuel from a reputable supplier in your vehicle. Federal
law requires that you must fuel this vehicle with Ultra Low Sulfur Highway
Diesel fuel (15 ppm Sulfur maximum) and prohibits the use of Low Sulfur
Highway Diesel fuel (500 ppm Sulfur maximum) to avoid damage to the
emissions control system.
For most year-round service, Number 2 diesel fuel meeting ASTM specification
D-975 Grade S15 will provide good performance.

If climatized or diesel Number 1 ULSD fuel is not available, and you are
operating below (20°F/-6°C), in sustained arctic conditions, Mopar® Premium
Diesel Fuel Treatment (or equivalent) is recommended to avoid gelling.

This vehicle is fully compatible with biodiesel blends up to 5% biodiesel
meeting ASTM specification D-975.
Pickup models, and Chassis Cab models
configured with optional B20 capability, are additionally compatible with 20%
biodiesel meeting ASTM specification D-7467.
Diesel Exhaust Fluid Mopar® Diesel Exhaust Fluid (API Certified) (DEF) or equivalent that has been
API Certified to the ISO 22241 standard. Use of fluids not API Certified to ISO
22241 may result in system damage. You can receive assistance in locating
DEF in the United States by calling 866-RAM-INFO (866-726-4636). In Canada
call 1–800–465–2001 (English) or 1–800–387–9983 (French).
Component
Fluid, Lubricant, or Genuine Part
CAUTION!
Mixing of engine coolant (antifreeze) other than specified Organic Additive Technology (OAT) engine coolant (antifreeze), may result in engine damage and
may decrease corrosion protection. Organic Additive Technology (OAT) engine coolant is different and should not be mixed with Hybrid Organic Additive Tech -
nology (HOAT) engine coolant (antifreeze) or any “globally compatible” coolant (antifreeze). If a non-OAT engine coolant (antifreeze) 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.

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TECHNICAL SPECIFICATIONS407
CHASSIS FLUIDS AND LUBRICANTS
6.4L GASOLINE ENGINE
Do not use water alone or alcohol-based engine coolant (antifreeze) products. Do not use additional rust inhibitors or antirust 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 (antifreeze). Use of propylene glycol-based engine coolant (antifreeze)
is not recommended.
Component Fluid, Lubricant, or Genuine Part
Automatic Transmission – 8-Speed Use only Mopar® ZF 8 & 9 Speed ATF Automatic Transmission Fluid, or
equivalent. Failure to use the correct fluid may affect the function or
performance of your transmission.
Automatic Transmission – 6-Speed Use only Mopar® ASRC Automatic Transmission Fluid or equivalent. Failure to
use the proper fluid may affect the function or performance of your
transmission.
Transfer Case We recommend using Mopar® Transfer Case Lubricant for Borg Warner 44-44
and 44-45.
Front and Rear Axle Fluid We recommend using SAE 75W-85 HD Ram GL-5 Synthetic Axle Lubricant.
Limited slip additive is required for limited slip axles. If the axle fluid is not
pre-mixed with limited slip additive we recommend using Mopar®
MS-10111 Limited Slip Additive.
Brake Master Cylinder We recommend using Mopar® DOT 3 and SAE J1703.
Power Steering Reservoir
We recommend using Mopar® Power Steering Fluid +4, Mopar® ATF+4 Automatic
Transmission Fluid.

CAUTION!
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413
INDEX
A
Adaptive Cruise Control (ACC) (Cruise
Control)
................................................ 141, 143Adding Engine Coolant (Antifreeze)............... 355Adding Fuel.................................................... 169Additives, Fuel............................................... 399AdjustDown........................................................... 32Forward....................................................... 32Rearward..................................................... 32Up................................................................ 32Adjustable Pedals............................................ 37Advance Phone Connectivity......................... 231Air BagAir Bag Operation...................................... 286Air Bag Warning Light................................ 284Enhanced Accident Response......... 290, 327Event Data Recorder (EDR)....................... 327If Deployment Occurs................................ 289Knee Impact Bolsters................................ 286Maintaining Your Air Bag System.............. 291Maintenance............................................. 291Redundant Air Bag Warning Light.............285Transporting Pets...................................... 307Air Bag Light..................................95, 284, 307
Air Cleaner, Engine (Engine Air Cleaner
Filter)................................................... 342, 361Air Conditioner Maintenance........................ 344Air Conditioner Refrigerant........................... 344Air Conditioner System................................. 344Air Conditioning................................................ 58Air Conditioning Filter....................................... 61Air Conditioning System................................... 60Air Conditioning, Operating Tips....................... 60Air Filter........................................................ 342Air PressureTires......................................................... 383AlarmSecurity Alarm...................................... 23, 96Alterations/ModificationsVehicle......................................................... 10Antifreeze (Engine Coolant).......................... 355Capacities................................................. 403Disposal................................................... 356Anti-Lock Brake System (ABS)...................... 259Anti-Lock Warning Light................................ 100Assist, Hill Start............................................. 264Audio Settings............................................... 219Audio Systems (Radio).................................. 190Auto Down Power Windows............................. 71Automatic Door Locks...................................... 26
Automatic Headlights.......................................48Automatic Temperature Control (ATC)..............60Automatic Transmission....................... 122, 360Adding Fluid.............................................. 360Fluid And Filter Change............................. 360Fluid Change............................................. 360Fluid Level Check............................. 358, 359Fluid Type........................................ 360, 407Shifting..................................................... 126Special Additives...................................... 358Automatic Transmission Limp Home Mode... 125AutoPark....................................................... 105AUX Camera......................................... 165, 168Auxiliary Driving Systems.............................. 266Axle Fluid.....................................360, 361, 407Axle Lubrication................................... 360, 361
B
Back-Up......................................................... 159Back-Up Camera........................................... 159Battery................................................... 96, 340Blanket..................................................... 114Charging System Light.................................96Keyless Key Fob Replacement....................16Battery Saver Feature......................................51Belts, Seat.................................................... 307
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Bluetooth Connecting To A Particular Mobile PhoneOr Audio Device After Pairing
................227Body Builders Guide........................................ 10Body Mechanism Lubrication........................ 351B-Pillar Location............................................. 380Brake Assist System...................................... 260Brake Control System.................................... 260Brake Fluid.......................................... 358, 407Brake System...................................... 358, 397Fluid Check............................................... 358Master Cylinder......................................... 358Parking...................................................... 119Warning Light.............................................. 95Brake/Transmission Interlock....................... 122Bulb Replacement......................................... 371Bulbs, Light.......................................... 309, 371
C
Cab Top Clearance Lights.............................. 375Camera.......................................................... 159Camera, AUX........................................ 165, 168Camera, Rear...................................... 159, 161Camera, Trailer 360...................................... 165Capacities, Antifreeze (Engine Coolant)......... 403Capacities, Fluid............................................ 403Caps, FillerOil (Engine)................................................ 338Power Steering.......................................... 140Radiator (Coolant Pressure)...................... 356
Car Washes................................................... 394Carbon Monoxide Warning................... 309, 310Cargo Light....................................................... 50CD................................................................. 221Cellular Phone.............................................. 252Center High Mounted Stop Light................... 375Center Seat Storage Compartment.................. 62Changing A Flat Tire...................................... 315Charge Air Cooler.......................................... 357Chart, Tire Sizing........................................... 377Check Engine Light (Malfunction Indicator
Light)............................................................. 104Checking Your Vehicle For Safety................. 307Checks, Safety.............................................. 307Child Restraint.............................................. 291Child RestraintsBooster Seats........................................... 294Child Seat Installation..................... 300, 302How To Stow An unused ALR Seat Belt.... 299Infant And Child Restraints....................... 293Locating The LATCH Anchorages.............. 298Lower Anchors And Tethers For Children.. 295Older Children And Child Restraints......... 293Seating Positions...................................... 295Clean Air Gasoline......................................... 399CleaningWheels..................................................... 389Climate Control................................................ 54Automatic.................................................... 54Manual........................................................ 58
Cold Weather Operation................................ 108Compact Spare Tire...................................... 387Connected Services...................................... 233Connected Services FAQ............................... 247Connected Services Features....................... 236Connected Services, Getting Started............ 235Connected Services, Introduction................. 233Contract, Service........................................... 410Controls........................................................ 214Cooling Pressure Cap (Radiator Cap)............ 356Cooling System............................................. 354Adding Coolant (Antifreeze)...................... 355Coolant Level................................... 355, 357Cooling Capacity....................................... 403Disposal Of Used Coolant......................... 356Drain, Flush, And Refill............................. 355Inspection................................................. 357Points To Remember................................ 357Pressure Cap............................................ 356Radiator Cap............................................. 356Selection Of Coolant (Antifreeze)..... 355, 404Corrosion Protection..................................... 393Cruise Control (Speed Control)............. 141, 143Cruise Light................................................... 102Customer Assistance.................................... 409Cybersecurity................................................ 190

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415
D
Daytime Running Lights
................................... 48Dealer Service............................................... 341Defroster, Rear Window................................... 58Defroster, Windshield............................. 58, 307Delay (Intermittent) Wipers.............................. 53Deleting A Phone........................................... 227Diagnostic System, Onboard......................... 103Diesel Exhaust Brake.................................... 120Diesel Fuel..................................................... 401Diesel Fuel Requirements............................. 401Diesel Fuel System, Re-Priming..................... 350Differential, Limited Slip................................ 139Dipsticks Power Steering.......................................... 140Disabled Vehicle Towing................................ 325Disc Drive...................................................... 221Disconnecting................................................ 227DisposalAntifreeze (Engine Coolant)....................... 356Disturb........................................................... 230Door Ajar.......................................................... 97Door Ajar Light................................................. 97Door LocksAutomatic.................................................... 26Doors............................................................... 24Draining Fuel/Water Separator Filter............ 347Driver Memory Presets.................................. 219Driver’s Seat Back Tilt..................................... 31
DrivingThrough Flowing, Rising, Or Shallow Standing Water
.................................... 189Dual Rear Wheels....................... 318, 392, 397
E
Electric Brake Control System....................... 260Anti-Lock Brake System............................ 259Electronic Roll Mitigation................. 260, 265Electrical Power Outlets................................... 68Electronic Range Select (ERS)............. 125, 130Electronic Stability Control (ESC).................. 261Electronic Throttle Control Warning Light......... 96Electronically Shifted Transfer Case.... 132, 135Emergency Braking....................................... 119Emergency, In Case OfFreeing Vehicle When Stuck..................... 324Hazard Warning Flasher........................... 311Jacking..................................................... 315Jump Starting........................................... 319Emission Control System Maintenance........ 104Engine.................................................. 338, 339Air Cleaner................................................ 342Block Heater............................................. 110Break-In Recommendations............ 118, 119Compartment........................................... 339Compartment Identification...................... 338Coolant (Antifreeze).................................. 404Exhaust Gas Caution....................... 309, 310
Fails To Start............................................. 107Flooded, Starting...................................... 107Fuel Requirements................................... 399Identification............................................. 339Idling......................................................... 115Jump Starting........................................... 319Oil.................................................... 341, 404Oil Filler Cap............................................. 338Oil Filter.................................................... 342Oil Reset......................................................82Oil Selection.............................................. 341Oil Synthetic.............................................. 342Overheating.............................................. 322Runaway................................................... 168Starting..................................................... 107Enhanced Accident Response
Feature................................................ 290, 327Entry System, Illuminated................................52Ethanol.......................................................... 399Exhaust Brake............................................... 120Exhaust Gas Cautions.......................... 309, 310Exhaust System..........................309, 353, 361Exterior Lighting...............................................47Exterior Lights........................................ 47, 309
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Seat Belt Automatic Locking Retractor (ALR)
............ 283Seat Belt Reminder......................................... 94Seat Belts............................................ 276, 307Adjustable Shoulder Belt........................... 280Adjustable Upper Shoulder Anchorage...... 280Adjustable Upper Shoulder Belt Anchorage............................................. 280Child Restraints......................................... 291Extender.................................................... 282Front Seat....................................... 276, 279Inspection................................................. 307Lap/Shoulder Belt Operation.................... 279Lap/Shoulder Belt Untwisting...................279Operating Instructions............................... 279Pregnant Women...................................... 282Reminder.................................................. 276Seat Belt Extender.................................... 282Seat Belt Reminder................................... 276Untwisting Procedure................................ 279Seat Belts Maintenance................................ 395Seats........................................................ 31, 32Adjustment........................................... 31, 32Easy Entry................................................... 33Folding Floor............................................... 65Head Restraints.......................................... 35Memory....................................................... 29Power.......................................................... 32Rear Folding................................................ 31Tilting.......................................................... 31
Security Alarm........................................... 23, 96Selection Of Coolant (Antifreeze).................. 404Send & Go........................................... 242, 248Sentry Key (Immobilizer).................................. 18Service Assistance........................................ 409Service Contract........................................... 410Service Manuals........................................... 411Settings, Audio.............................................. 219Shift Lever Override...................................... 322Shifting......................................................... 121Automatic Transmission.................. 122, 126Transfer Case........................................... 139Transfer Case, Shifting Into Transfer Case Neutral (N)................................... 186Transfer Case, Shifting Out Of TransferCase Neutral (N)................................... 187Signals, Turn................................. 50, 102, 309Sirius Satellite Radio..................................... 215Favorites................................................... 218Replay...................................................... 217SiriusXM Satellite RadioBrowse in SXM......................................... 218Favorites................................................... 218Replay...................................................... 217Sliding Rear Window, Power............................ 72Smart Watch................................................. 247Snow Chains (Tire Chains)............................ 390Snow Plow.................................................... 183
Snow Tires.................................................... 387SOS Call............................................... 236, 248Spare Tires........................................... 387, 388Speed ControlAccel/Decel.............................................. 142Cancel....................................................... 142Resume.................................................... 142Speed Control (Cruise Control)............. 141, 143Starting....................................... 105, 107, 108Automatic Transmission.................. 105, 109Button..........................................................18Cold Weather............................................ 108Engine Block Heater................................. 110Engine Fails To Start................................. 107Starting And Operating.................................. 107Starting Procedures............................. 107, 108Starting Procedures (Diesel Engines)............ 108Starting Procedures (Gas Engines)............... 105SteeringPower........................................................ 140Tilt Column...................................................27Wheel, Heated...................................... 27, 28Wheel, Tilt....................................................27Steering Wheel Audio Controls...................... 213Steering Wheel Mounted Sound System....... 213Stolen Vehicle Assistance.................... 244, 249Storage............................................................61Storage Compartment, Center Seat.................62

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