coolant level RAM CHASSIS CAB 2022 User Guide

STARTING AND OPERATING119
(Continued)
and not interpreted as a problem. Please check
your oil level with the engine oil indicator often
during the break in period. Add oil as required.
ENGINE BREAK-IN RECOMMENDATIONS —
DIESEL ENGINE
The Cummins® Turbo Diesel engine does not
require a break-in period due to its construction.
Normal operation is allowed, providing the
following recommendations are followed:
Warm up the engine before placing it under
load.
Do not operate the engine at idle for prolonged
periods.
Use the appropriate transmission gear to
prevent engine lugging.
Observe vehicle oil pressure and temperature
indicators.
Check the coolant and oil levels frequently.
Vary throttle position at highway speeds when
carrying or towing significant weight.
NOTE:Light duty operation such as light trailer towing or
no load operation will extend the time before the
engine is at full efficiency. Reduced fuel economy
and power may be seen at this time.
For additional vehicle break-in requirements
Ú
page 177.
Because of the construction of the Cummins®
Turbo Diesel engine, engine run-in is enhanced by
loaded operating conditions which allow the
engine parts to achieve final finish and fit during
the first 6,000 miles (10,000 km).
PARKING BRAKE
Before leaving the vehicle, make sure that the
parking brake is fully applied. Also, be certain to
leave the transmission in PARK.
The foot operated parking brake is located below
the lower left corner of the instrument panel. To
apply the parking brake, firmly push the parking
brake pedal fully. To release the parking brake, pull
the parking brake release handle.

Parking Brake Release
When the parking brake is applied with the ignition
switch ON, the Brake Warning Light in the
instrument cluster will illuminate.
NOTE:
When the parking brake is applied and the
transmission is placed in gear, the Brake
Warning Light will flash. If vehicle speed is
detected, a chime will sound to alert the driver.
Fully release the parking brake before
attempting to move the vehicle.
This light only shows that the parking brake is
applied. It does not show the degree of brake
application.
When parking on a hill, it is important to turn the
front wheels toward the curb on a downhill grade
and away from the curb on an uphill grade. Apply
the parking brake before placing the gear selector
in PARK, otherwise the load on the transmission
locking mechanism may make it difficult to move
the gear selector out of PARK. The parking brake
should always be applied whenever the driver is
not in the vehicle.
WARNING!
Never use the PARK position as a substitute
for the parking brake. Always apply the
parking brake fully when parked to guard
against vehicle movement and possible injury
or damage.
4

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328
SERVICING AND MAINTENANCE
SCHEDULED SERVICING — GASOLINE
ENGINE
Your vehicle is equipped with an automatic oil
change indicator system. The oil change indicator
system will remind you that it is time to take your
vehicle in for scheduled maintenance.
Based on engine operation conditions, the oil
change indicator message will illuminate. This
means that service is required for your vehicle.
Operating conditions such as frequent short-trips,
trailer tow, extremely hot or cold ambient
temperatures will influence when the “Oil Change
Required” message is displayed. Have your vehicle
serviced as soon as possible, within the next
500 miles (805 km).An authorized dealer will reset the oil change
indicator message after completing the scheduled
oil change. If a scheduled oil change is performed
by someone other than an authorized dealer, the
message can be reset by referring to the steps
described under Instrument Cluster Display
Ú
page 81.
Under no circumstances should oil change
intervals exceed 8,000 miles (13,000 km),
12 months or 350 hours of engine run time,
whichever comes first. The 350 hours of engine
run or idle time is generally only a concern for fleet
customers. Once A Month Or Before A Long Trip:
Check engine oil level.
Check windshield washer fluid level.
Check the tire inflation pressures and look for
unusual wear or damage. Rotate at the first sign
of irregular wear.
Check the fluid levels of the coolant reservoir,
brake master cylinder, power steering and auto
-
matic transmission (6-speed only), and fill as
needed.
Check function of all interior and exterior lights.

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330SERVICING AND MAINTENANCE
Mileage or time passed (whichever comes first)
20,000
30,000
40,000
50,000
60,000
70,000
80,000
90,000
100,000
110,000
120,000
130,000
140,000
150,000
Or Years: 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000
48,000
64,000
80,000
96,000
112,000
128,000
144,000
160,000
176,000
192,000
208,000
224,000
240,000
Additional Inspections
Inspect the CV/Universal joints. X X X X X X X X X X X X X X
Inspect front suspension, tie rod ends, and replace if necessary. X X X X X X X
Inspect the front and rear axle surfaces. If gear oil leakage is
suspected, check the fluid level. If using your vehicle for police,
taxi, fleet, off-road or frequent trailer towing, change axle fluid. X X X X X X X
Inspect the brake linings, parking brake function. X X X X X X X
Additional Maintenance
Replace the cabin air filter. To be replaced every 12,000 mi (19,000 km).
Replace the engine air cleaner filter. XXXXX
Replace spark plugs.
1X
Flush and replace the engine coolant at 10 years or
150,000 miles (240,000 km) whichever comes first. X
X
Change the automatic transmission fluid (AS66RC Transmission
Only). X
XX
Change the automatic transmission fluid and sump filter
(AS66RC Transmission Only). X
X

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332SERVICING AND MAINTENANCE
SCHEDULED SERVICING — DIESEL ENGINE
Required Maintenance Intervals
Refer to the maintenance plan on the following
pages for the required maintenance intervals.
More frequent maintenance may be needed in
severe conditions, such as dusty areas and very
short trip driving. In some extreme conditions,
additional maintenance not specified in the
maintenance schedule may be required.
At Each Stop For Fuel
Check the engine oil level at least 30 minutes after
a fully warmed engine is shut off. Checking the oil
level while the vehicle is on level ground will
improve the accuracy of the oil level reading. Add
oil only when the level is at or below the ADD or
MIN mark.
Once A Month
Inspect the batteries, and clean and tighten the
terminals as required.
Check the fluid levels of the coolant reservoir,
brake master cylinder, and automatic transmis -
sion, and add as needed. At Each Oil Change

Change the engine oil filter.
Inspect the exhaust system.
Check the tire inflation pressures and look for
unusual wear or damage. Rotate at the first sign
of irregular wear.
Inspect engine air cleaner filter. Replace the
engine air cleaner filter, if necessary.
Inspect the CV/Universal joints.
Check the coolant level, hoses, and clamps.
Inspect front end, and lubricate — If equipped
with serviceable fittings.
Inspect and replace the Evaporative System
Fresh Air Filter as necessary, replacement may
be more frequent if vehicle is operated in
extreme dusty conditions.
Inspection and service should also be performed
anytime a malfunction is observed or suspected.
Retain all receipts.
NOTE:Using white lithium grease, lubricate the door
hinge pivot joints twice a year to prevent
premature wear.
OIL CHANGE INDICATOR SYSTEM —
D
IESEL ENGINE
Your vehicle is equipped with an engine oil change
indicator system. This system will alert you when it
is time to change your engine oil by displaying the
words “Oil Change Due” in your instrument cluster
display. The engine oil change indicator system is
duty cycle based, which means the engine oil
change interval may fluctuate depending on your
personal driving style. Failure to change the engine
oil per the maintenance schedule can result in
internal engine damage.
An authorized dealer will reset the oil change
indicator message after completing the scheduled
oil change. If a scheduled oil change is performed
by someone other than an authorized dealer, the
message can be reset by referring to the steps
described under Instrument Cluster Display
Ú page 81.
Replace the engine oil and oil filter every
15,000 miles (24,000 km) or 12 months, or
sooner if prompted by the oil change indicator
system. Under no circumstances should oil change
intervals exceed 15,000 miles (24,000 km) or 12 months, whichever comes first.CAUTION!
Failure to perform the required maintenance
items may result in damage to the vehicle.

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356SERVICING AND MAINTENANCE
Please review these recommendations for using
Organic Additive Technology (OAT) engine coolant
that meets the requirements of the manufacturer
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 the
manufacturer Material Standard MS.90032.
Mix a minimum solution of 50% OAT engine
coolant that meets the requirements of the
manufacturer 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 corrosion protection
in the engine cooling system.
NOTE:
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 a local 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.
Cooling System Pressure Cap
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.Disposal Of Used Coolant
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
by a child or pet, seek emergency assistance
immediately.
WARNING!
Do not open a hot engine cooling system.
Never add engine coolant (antifreeze) when
the engine is overheated. Do not loosen or
remove the cap to cool an overheated engine.
Heat causes pressure to build up in the
cooling system. To prevent scalding or injury,
do not remove the pressure cap while the
system is hot or under pressure.
Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or
engine damage may result.

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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.
8

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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
11

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414
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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