radiator RAM 1500 2022 User Guide

424SERVICING AND MAINTENANCE
Checking Coolant Level — 5.7L Engines
With the engine off and cold, the level of the engine
coolant should be between the ADD and SAFE
range on the dipstick.
To check the coolant level:

1. Open the coolant reservoir.

2. Lift and remove the plastic dipstick from the
reservoir neck.

Coolant Reservoir Dipstick

3. 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.
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 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
(D
IESEL 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.

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SERVICING AND MAINTENANCE425
(Continued)
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 Ú
page 394.
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
Úpage 476.
WARNING!
Riding the brakes can lead to brake failure and
possibly a collision. Driving with your foot resting
or riding on the brake pedal can result in
abnormally high brake temperatures, excessive
lining wear, and possible brake damage. You
would not have your full braking capacity in an
emergency.WARNING!
Use only manufacturer's recommended brake
fluid Ú page 476. Using the wrong type of
brake fluid can severely damage your brake
system and/or impair its performance. The
proper type of brake fluid for your vehicle is
also identified on the original factory installed
hydraulic master cylinder reservoir.
To avoid contamination from foreign matter or
moisture, use only new brake fluid or fluid that
has been in a tightly closed container. Keep
the master cylinder reservoir cap secured at
all times. Brake fluid in an open container
absorbs moisture from the air resulting in a
lower boiling point. This may cause it to boil
unexpectedly during hard or prolonged
braking, resulting in sudden brake failure. This
could result in a collision.
Overfilling the brake fluid reservoir can result
in spilling brake fluid on hot engine parts,
causing the brake fluid to catch fire. Brake
fluid can also damage painted and vinyl
surfaces, care should be taken to avoid its
contact with these surfaces.
Do not allow petroleum based fluid to contam -
inate the brake fluid. Brake seal components
could be damaged, causing partial or
complete brake failure. This could result in a
collision.
WARNING!
8

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TECHNICAL SPECIFICATIONS475
NOTE:If Climatized or 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.
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.
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.
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482 Bed Divider
...................................................... 97Bed Step.......................................................... 90Bedliner......................................................... 463Belts, Seat..................................................... 368Blind Spot Monitoring.................................... 319Bluetooth Connecting To A Particular MobilePhone Or Audio Device After Pairing
..... 276Body Builders Guide........................................ 11Body Mechanism Lubrication........................ 418Bodywork....................................................... 461B-Pillar Location............................................. 448Brake Assist System...................................... 313Brake Control System.................................... 313Brake Fluid.......................................... 425, 476Brake System...................................... 425, 466Fluid Check............................................... 425Master Cylinder......................................... 425Parking...................................................... 150Warning Light............................................ 128Brake/Transmission Interlock....................... 154Bulb Replacement......................................... 438Bulbs, Light.......................................... 370, 438
C
Camera.......................................................... 199Camera, AUX.................................................. 203Camera, Rear................................................ 199Camera, Surround View................................. 200
Camera, Trailer 360...................................... 203Capacities, Fuel............................................ 472Caps, FillerOil (Engine)............................................... 403Radiator (Coolant Pressure)..................... 423Car Washes................................................... 462Carbon Monoxide Warning............................ 370Care And Maintenance................................. 461Cargo Light..............................................57, 135CD................................................................. 270Cellular Phone.............................................. 302Center High Mounted Stop Light................... 443Center Seat Storage Compartment.................. 70Charge Air Cooler.......................................... 424Chart, Tire Sizing........................................... 445Check Engine Light
(Malfunction Indicator Light)......................... 139Checking Your Vehicle For Safety................. 368Checks, Safety.............................................. 368Child Restraint.............................................. 354Child RestraintsBooster Seats........................................... 357Child Seat Installation..................... 363, 364How To Stow An unused ALR Seat Belt.... 362Infant And Child Restraints....................... 356Locating The LATCH Anchorages.............. 361Lower Anchors And Tethers ForChildren................................................ 359Older Children And Child Restraints......... 357Seating Positions...................................... 358
Clean Air Gasoline......................................... 468CleaningWheels...................................................... 457Climate Control................................................62Automatic....................................................62Manual........................................................65Cold Weather Operation................................ 145Compact Spare Tire...................................... 456Connected Services...................................... 282Connected Services FAQ............................... 297Connected Services Features....................... 286Connected Services, Getting Started............ 284Connected Services, Introduction................. 283Contract, Service........................................... 478Controls........................................................ 262Cooling Pressure Cap (Radiator Cap)............ 423Cooling System.................................... 130, 421Adding Coolant (Antifreeze)...................... 422Coolant Level..........................421, 423, 424Cooling Capacity....................................... 472Disposal Of Used Coolant......................... 423Drain, Flush, And Refill............................. 422Inspection........................................ 423, 424Points To Remember................................ 424Pressure Cap............................................ 423Radiator Cap............................................. 423Selection Of Coolant (Antifreeze)......................... 422, 472, 473Corrosion Protection..................................... 461

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488 Power Steering
.............................................. 173Pregnant Women And Seat Belts...................340Presets.......................................................... 268Pressure Washing.......................................... 408Pretensioners Seat Belts.................................................. 340Profile Settings.............................................. 236
R
Radial Ply Tires.............................................. 452Radiator Cap
(Coolant Pressure Cap)........................ 421, 423RadioOff Road Pages......................................... 306Presets...................................................... 268Settings..................................................... 234Sound Setting............................................ 255Radio Controls............................................... 262Radio Mode................................................... 262Radio Operation.................................. 262, 302Radio Remote Controls.................................. 262Rain Sensitive Wiper System........................... 62RamBox........................................................... 94RamBox Safety................................................ 96Rear Axle (Differential)................................... 427Rear Cargo Area Utility Rails............................ 93Rear Cross Path............................................. 322Rear ParkSense System................................ 186Rear Window, Sliding....................................... 81Reclining Rear Seats....................................... 37
Recreational Towing..................................... 227Four-Wheel Drive Models......................... 228Shifting Into Transfer Case Neutral (N)..... 229Shifting Out Of Transfer CaseNeutral (N)........................................... 230Two-Wheel Drive Models.......................... 228Reformulated Gasoline................................. 468Refrigerant.................................................... 415Registering SiriusXM Guardian..................... 284Release, Hood................................................. 85Release, Tailgate............................................. 86Reminder, Seat Belt...................................... 335Remote Features, Door Lock/Unlock... 290, 298Remote Features, Horn And Lights............... 291Remote Features, Starting................... 290, 299Remote Keyless EntryProgramming Additional Key Fobs............... 22Remote Sound System (Radio) Control......... 262Remote Start (Diesel)...................................... 27Remote Start (Gasoline).................................. 24Remote StartingComfort Systems......................................... 26Exit Remote Start Mode.............................. 25Remote Starting System........................... 24, 27Remove, Tailgate............................................. 88Replacement Bulbs...................................... 438Replacement Tires........................................ 454Reporting Safety Defects.............................. 479Restraints, Child........................................... 354Restraints, Head.............................................. 41
Roadside Assistance............................ 291, 298Rotation, Tires............................................... 460
S
Safety............................................................ 261Safety Checks Inside Vehicle........................ 368Safety Checks Outside Vehicle...................... 369Safety Defects, Reporting............................. 479Safety Features............................................. 261Safety Information, Tire................................. 444Safety Tips.................................................... 368Safety, Exhaust Gas...................................... 370Satellite Radio............................................... 264Saved Radio Stations.................................... 268Schedule, Maintenance..............393, 398, 399Seat Belt Reminder....................................... 130Seat Belts............................................ 335, 368Adjustable Shoulder Belt.......................... 339Adjustable Upper Shoulder Anchorage..... 339Adjustable Upper Shoulder BeltAnchorage............................................ 339Automatic Locking Retractor (ALR)........... 340Child Restraints........................................ 354Energy Management Feature................... 340Extender................................................... 339Front Seat............................... 335, 336, 338Inspection................................................. 368Lap/Shoulder Belt Operation.................... 338Lap/Shoulder Belt Untwisting................... 338Lap/Shoulder Belts................................... 336

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