2022 RAM 1500 cooling

8
TOWING A DISABLED VEHICLE .......................... 390 Two-Wheel Drive Models............................... 391
Four-Wheel Drive Models.............................. 392Emergency Tow Hooks — If Equipped .......... 392
ENHANCED ACCIDENT RESPONSE SYSTEM
(EARS) .................................................................. 392
EVENT DATA RECORDER (EDR) ......................... 392
SERVICING AND MAINTENANCE
SCHEDULED SERVICING — GASOLINE
ENGINE ................................................................. 393
Maintenance Plan ......................................... 394
SCHEDULED SERVICING — DIESEL
ENGINE ................................................................. 398
Maintenance Plan — Diesel Fuel Up To B5
Biodiesel ....................................................... 399
Additional Maintenance — B6 To B20
Biodiesel ........................................................ 402
ENGINE COMPARTMENT .................................... 403
3.6L Engine With Stop/Start ........................ 403
5.7L Engine Without Stop/Start ................... 404
5.7L Engine With Stop/Start ........................ 405
3.0L Diesel Engine ........................................ 406
Checking Oil Level ......................................... 407
Adding Washer Fluid ..................................... 407
Maintenance-Free Battery ............................ 408
Pressure Washing ......................................... 408 VEHICLE MAINTENANCE..................................... 408
Engine Oil — Gas Engine .............................. 409Engine Oil Filter ............................................ 409
Engine Air Cleaner Filter ............................... 410
Draining Fuel/Water Separator
Filter — Diesel Engine ................................... 412Underbody Mounted Fuel Filter
Replacement — Diesel Engine...................... 413Priming If The Engine Has Run Out
Of Fuel — Diesel Engine ................................ 414Intervention Regeneration Strategy —
Message Process Flow (Diesel Engine) ....... 414
Diesel Exhaust Fluid...................................... 415
Air Conditioner Maintenance........................ 415
Accessory Drive Belt Inspection ................... 418Body Lubrication ........................................... 418Windshield Wiper Blades.............................. 419Exhaust System ............................................ 420
Cooling System ............................................. 421Charge Air Cooler — Inter-Cooler
(Diesel Engine) .............................................. 424
Brake System ............................................... 425
Automatic Transmission .............................. 426Rear Axle And 4x4 Front Driving Axle
Fluid Level...................................................... 427
Transfer Case ................................................ 427Fuses.............................................................. 427
Bulb Replacement......................................... 438 TIRES ..................................................................... 444
Tire Safety Information ................................. 444
Tires — General Information ......................... 451
Tire Types....................................................... 455Spare Tires — If Equipped............................. 455Wheel And Wheel Trim Care......................... 457
Snow Traction Devices ................................. 458
Tire Rotation Recommendations ................ 460
DEPARTMENT OF TRANSPORTATION
UNIFORM TIRE QUALITY GRADES .................... 460
Treadwear...................................................... 460
Traction Grades ............................................. 461Temperature Grades..................................... 461
STORING THE VEHICLE ....................................... 461
BODYWORK .......................................................... 461
Protection From Atmospheric Agents .......... 461
Body And Underbody Maintenance ............. 462
Preserving The Bodywork ............................. 462
INTERIORS ........................................................... 464
Seats And Fabric Parts ................................. 464
Plastic And Coated Parts .............................. 465
Leather Surfaces........................................... 465
Glass Surfaces ............................................. 465

22_DT_OM_EN_USC_t.book Page 8

GETTING TO KNOW YOUR VEHICLE63
NOTE:Icons and descriptions can vary based upon
vehicle equipment.
MAX A/C Button
Press and release the MAX A/C button on
the touchscreen to change the current
setting to the coldest output of air. The
MAX A/C indicator illuminates when
MAX A/C is on. Pressing the button again will cause
the MAX A/C operation to exit.
NOTE:
MAX A/C sets the control for maximum cooling
performance.
The MAX A/C button is only available on the
touchscreen.
A/C Button

Press and release this button on the
touchscreen, or push the button on the
faceplate to change the current setting. The
A/C indicator illuminates when A/C is on.

Recirculation Button
Press and release this button on the
touchscreen, or push the button on the
faceplate, to change the system between
Recirculation mode and outside air
mode. The Recirculation indicator and the A/C
indicator illuminate when the Recirculation button
is pressed. Recirculation can be used when outside conditions, such as smoke, odors, dust, or
high humidity are present. Recirculation can be
used in all modes. Recirculation may be
unavailable (button on the touchscreen greyed
out) if conditions exist that could create fogging on
the inside of the windshield. The A/C can be
deselected manually without disturbing the mode
control selection. Continuous use of the
Recirculation mode may make the inside air stuffy
and window fogging may occur. Extended use of
this mode is not recommended. Recirculation
mode may automatically adjust to optimize
customer experience for warming, cooling,
dehumidification, etc.
In cold weather, use of Recirculation mode may
lead to excessive window fogging. The recirculation
feature may be unavailable if conditions exist that
could create fogging on the inside of the
windshield.
Auto Button
Set your desired temperature and press
AUTO. AUTO will achieve and maintain
your desired temperature by
automatically adjusting the blower speed
and air distribution. Air Conditioning (A/C) may be
active during AUTO operation to improve
performance. AUTO mode is highly recommended
for efficiency. You can turn AUTO on in one of two ways:
Press and release this button on the touch
-
screen.
Push the button on the faceplate.
Toggling this function will cause the system to
switch between manual mode and automatic
mode Ú page 67.
Front Defrost Button
Press and release the Front Defrost
button on the touchscreen, or push and
release the button on the faceplate, to
change the current airflow setting to
Defrost mode. The Front Defrost indicator
illuminates when Front Defrost is on. Air comes
from the windshield and side window demist
outlets. When the defrost button is selected, the
blower level may increase. Use Defrost mode with
maximum temperature settings for best
windshield and side window defrosting and
defogging. When toggling the front defrost mode
button, the climate system will return to the
previous setting.
2

22_DT_OM_EN_USC_t.book Page 63

68GETTING TO KNOW YOUR VEHICLE
To provide you with maximum comfort in the
Automatic mode during cold start-ups, the blower
fan will remain on low until the engine warms up.
The blower will increase in speed and transition
into Auto mode.
Manual Operation Override
This system offers a full complement of manual
override features. The AUTO symbol in the front
ATC display will be turned off when the system is
being used in the manual mode.
CLIMATE VOICE RECOGNITION —
I
F EQUIPPED
Adjust vehicle temperatures hands-free and keep
everyone comfortable while you keep moving
ahead.
Push the VR button on the steering wheel. After the
beep, say one of the following commands:
“ Set driver temperature to 70 degrees ”
“Set passenger temperature to 70 degrees ”
Did you know: Voice Command for Climate may
only be used to adjust the interior temperature of
your vehicle. Voice Command will not work to
adjust the heated seats or steering wheel if
equipped.
OPERATING TIPS
Refer to the chart at the end of this section for
suggested control settings for various weather
conditions.
Summer Operation
The engine cooling system must be protected with
a high-quality antifreeze coolant to provide proper
corrosion protection and to protect against engine
overheating. OAT coolant (conforming to
MS.90032) is recommended.
Winter Operation
To ensure the best possible heater and defroster
performance, make sure the engine cooling
system is functioning properly and the proper
amount, type, and concentration of coolant is
used. Use of the Air Recirculation mode during
Winter months is not recommended, because it
may cause window fogging.
Vacation/Storage
For information on maintaining the Climate Control
system when the vehicle is being stored for an
extended period of time, see Ú page 461.
Window Fogging
Vehicle windows tend to fog on the inside in mild,
rainy, and/or humid weather. To clear the
windows, select Defrost or Mix mode and increase
the front blower speed. Do not use the
Recirculation mode without A/C for long periods,
as fogging may occur.
Outside Air Intake
Make sure the air intake, located directly in front of
the windshield, is free of obstructions, such as
leaves. Leaves collected in the air intake may
reduce airflow, and if they enter the air distribution
box, they could plug the water drains. In Winter
months, make sure the air intake is clear of ice,
slush, and snow.
Cabin Air Filter
The Climate Control system filters out dust and
pollen from the air. Contact an authorized dealer to
service your cabin air filter, and to have it replaced
when needed.
Stop/Start System — If Equipped
While in an Autostop, the Climate Control system
may automatically adjust airflow to maintain cabin
comfort. Customer settings will be maintained
upon return to an engine running condition.

22_DT_OM_EN_USC_t.book Page 68

GETTING TO KNOW YOUR INSTRUMENT PANEL107
BASE / MIDLINE INSTRUMENT CLUSTER
D
ESCRIPTIONS — GASOLINE

1. Tachometer

Indicates the engine speed in revolutions
per minute (RPM x 1000).
2. Voltmeter
When the vehicle is in the RUN state, the
gauge indicates the electrical system
voltage. The pointer should stay within the
normal range if the battery is charged. If the
pointer moves to either extreme left or right
and remains there during normal driving,
the electrical system should be serviced.
NOTE:In vehicles equipped with Stop/Start, a reduced
voltage may be present during an Autostop.
3. Instrument Cluster Display
When the appropriate conditions exist, this
display shows the instrument cluster
display messages Ú page 114.
The display always shows one of the main
menu items after ignition on. 4. Oil Pressure Gauge
The pointer should always indicate the oil
pressure when the engine is running. A
continuous high or low reading under
normal driving conditions may indicate a
lubrication system malfunction. Immediate
service should be obtained from an autho
-
rized dealer.
NOTE:In vehicles equipped with Stop/Start, an oil
pressure indication of zero is normal during an
Autostop.
5. Speedometer
Indicates vehicle speed.
6. Temperature Gauge
The pointer shows engine coolant tempera -
ture. The pointer positioned within the
normal range indicates that the engine
cooling system is operating satisfactorily.
The pointer will likely indicate a higher
temperature when driving in hot weather,
up mountain grades, or when towing a
trailer. It should not be allowed to exceed
the upper limits of the normal operating
range. 7. Fuel GaugeThe pointer shows the level of fuel in the
fuel tank when the ignition is in the ON/RUN
position.
 The fuel pump symbol points to
the side of the vehicle where the
fuel door is located.
WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. You may want to call an authorized
dealer for service if your vehicle overheats
Ú page 423.
CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge
reads “H,” pull over and stop the vehicle. Idle the
vehicle with the air conditioner turned off until
the pointer drops back into the normal range. If
the pointer remains on the “H,” turn the engine
off immediately and call an authorized dealer for
service.
3

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GETTING TO KNOW YOUR INSTRUMENT PANEL109
PREMIUM INSTRUMENT CLUSTER
D
ESCRIPTIONS — GASOLINE

1. Tachometer

Indicates the engine speed in revolutions
per minute (RPM x 1000).
2. Instrument Cluster Display
When the appropriate conditions exist, this
display shows the instrument cluster
display messages Ú page 114.
The display always shows one of the main
menu items after ignition on.
3. Speedometer
Indicates vehicle speed. 4. Temperature Gauge
The pointer shows engine coolant tempera
-
ture. The pointer positioned within the
normal range indicates that the engine
cooling system is operating satisfactorily.
The pointer will likely indicate a higher
temperature when driving in hot weather,
up mountain grades, or when towing a
trailer. It should not be allowed to exceed
the upper limits of the normal operating
range. 5. Fuel Gauge
The pointer shows the level of fuel in the
fuel tank when the ignition is in the ON/RUN
position.
 The fuel pump symbol points to
the side of the vehicle where the
fuel door is located.
WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. You may want to call an authorized
dealer for service if your vehicle overheats
Ú page 423.
CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge
reads “H,” pull over and stop the vehicle. Idle the
vehicle with the air conditioner turned off until
the pointer drops back into the normal range. If
the pointer remains on the “H,” turn the engine
off immediately and call an authorized dealer for
service.
3

22_DT_OM_EN_USC_t.book Page 109

GETTING TO KNOW YOUR INSTRUMENT PANEL111
BASE / MIDLINE INSTRUMENT CLUSTER
D
ESCRIPTIONS — DIESEL

1. Tachometer

Indicates the engine speed in revolutions
per minute (RPM x 1000).
2. Engine Coolant Temperature
This gauge shows the engine coolant
temperature. The gauge pointer will likely
show higher temperatures when driving in
hot weather, up mountain grades, or in
heavy stop and go traffic. If the red Warning
Light turns on while driving, safely bring the
vehicle to a stop, and turn off the engine.
DO NOT operate the vehicle until the cause
is corrected. 3. Instrument Cluster Display
When the appropriate conditions exist, this
display shows the instrument cluster
display messages Ú
page 114.
The display always shows one of the main
menu items after ignition on.
4. Oil Pressure Gauge
The pointer should always indicate some oil
pressure when the engine is running. A
continuous high or low reading under
normal driving conditions may indicate a
lubrication system malfunction. Immediate
service should be obtained from an autho -
rized dealer.
5. Speedometer
Indicates vehicle speed.
WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. You may want to call an authorized
dealer for service if your vehicle overheats
Ú page 423.
WARNING!
Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge
reads “H” pull over and stop the vehicle. Idle the
vehicle with the air conditioner turned off until
the pointer drops back into the normal range. If
the pointer remains on the “H”, turn the engine
off immediately and call an authorized dealer
for service.
3

22_DT_OM_EN_USC_t.book Page 111

STARTING AND OPERATING147
Winter Front Cover

Winter Front Cover

A Winter front or cold weather cover can be used in
ambient temperatures below 32°F (0°C),
especially during extended idle conditions. This
cover is equipped with four flaps for managing
total grille opening in varying ambient
temperatures. If a Winter front or cold weather
cover is to be used the flaps should be in the full
open position to allow air flow to the cooling
module and automatic transmission oil cooler.
When ambient temperatures drop below 0°F
(-17°C) the four flaps need to be closed. A suitable
cold weather cover is available from a Mopar®
dealer.
Engine Warm-Up
Avoid full throttle operation when the engine is
cold. When starting a cold engine, bring the engine
up to operating speed slowly to allow the oil
pressure to stabilize as the engine warms up.
If temperatures are below 32°F (0°C), operate the
engine at moderate speeds for five minutes before
full loads are applied.
ENGINE IDLING
Avoid prolonged idling. Long periods of idling may
be harmful to your engine because combustion
chamber temperatures can drop so low that the
fuel may not burn completely. Incomplete
combustion allows carbon and varnish to form on
piston rings, cylinder head valves, turbochargers,
and injector nozzles. Also, the unburned fuel can
enter the crankcase, diluting the oil and causing
rapid wear to the engine.
4

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174STARTING AND OPERATING
NOTE:
Even if the power steering assistance is no
longer operational, it is still possible to steer the
vehicle. Under these conditions there will be a
substantial increase in steering effort, espe -
cially at low speeds and during parking maneu -
vers.
If the condition persists, see an authorized
dealer for service.
FUEL SAVER TECHNOLOGY 5.7L ENGINES
ONLY — IF EQUIPPED
This feature offers improved fuel economy by
shutting off four of the engine's eight cylinders
during light load and cruise conditions. The system
is automatic with no driver inputs or additional
driving skills required.
NOTE:This system may take some time to return to full
functionality after a battery disconnect.
STOP/START SYSTEM — IF EQUIPPED
The Stop/Start function, included with eTorque
equipped vehicles, is developed to save fuel and
reduce emissions. The system will stop the engine
automatically as the vehicle decelerates at low
speeds if the required conditions are met. Releasing the brake pedal or shifting out of DRIVE
will automatically restart the engine.
Vehicles equipped with eTorque contain a
heavy-duty motor generator and an additional
hybrid electric battery to store energy from vehicle
deceleration used to expand engine off energy
storage and for engine startup after a stop, as well
as providing engine torque assist when conditions
are met to enable this.
AUTOSTOP MODE
The Stop/Start feature is enabled after every
normal customer engine start. It will remain in
STOP/START NOT READY until you drive forward
with a vehicle speed greater than 2 mph (3 km/h).
At that time, the system will go into STOP/START
READY and if all other conditions are met, the
system may go into STOP/START AUTOSTOP
ACTIVE Autostop mode.
To Activate The Autostop Mode, The Following
Must Occur:

1. The system must be in STOP/START READY
state. A STOP/START READY message will be
displayed in the instrument cluster within the
Stop/Start section
Ú
page 114.

2. The vehicle must be decelerating and likely coming to a complete stop.
3. The transmission gear selector must be in DRIVE and the brake pedal pressed. The engine will shut down, the tachometer will
move to the zero position and the stop/start
telltale will illuminate indicating you are in an
Autostop. While in an Autostop, the Climate
Controls system may automatically adjust airflow
to maintain cabin comfort. Customer settings will
be maintained upon return to an engine running
condition.
POSSIBLE REASONS THE ENGINE DOES
N
OT AUTOSTOP
Prior to engine shut down, the system will check
many safety and comfort conditions to see if they
are fulfilled. In following situations, the engine will
not Autostop:
Driver’s seat belt is not buckled
Driver’s door is not closed
The vehicle is on a steep grade
Cabin heating or cooling is in process and an
acceptable cabin temperature has not been
achieved
HVAC is set to full defrost mode at a high blower
speed
Engine has not reached normal operating
temperature
Engine or exhaust temperature is too high
The battery is charging

22_DT_OM_EN_USC_t.book Page 174