2022 RAM CHASSIS CAB air condition

7
SERVICING AND MAINTENANCE
SCHEDULED SERVICING — GASOLINE
ENGINE .................................................................. 328Maintenance Plan – Gasoline Engine.......... 329
SCHEDULED SERVICING — DIESEL ENGINE .... 332
Oil Change Indicator System — Diesel
Engine ............................................................ 332
Perform Service Indicator — Diesel
Engine ............................................................ 333
Maintenance Plan — Diesel Engine ............. 334
ENGINE COMPARTMENT .................................... 338
6.4L Gasoline Engine ................................... 3386.7L Diesel Engine ........................................ 339
Checking Oil Level ......................................... 340
Adding Washer Fluid ..................................... 340
Maintenance-Free Battery ........................... 340
Pressure Washing ......................................... 341
VEHICLE MAINTENANCE .................................... 341
Engine Oil ...................................................... 341Engine Oil Filter ............................................. 342
Engine Air Cleaner Filter ............................... 342
Air Conditioner Maintenance ........................ 344
Accessory Drive Belt Inspection ................... 346
Draining Fuel/Water Separator Filter .......... 347
Engine Mounted Fuel Filter Replacement ... 348
Underbody Mounted Fuel Filter
Replacement ................................................. 349
Priming If The Engine Has Run Out Of
Fuel ................................................................ 350 Intervention Regeneration Strategy —
Message Process Flow ................................ 350
Diesel Exhaust Fluid (DEF) ........................... 351Body Lubrication ........................................... 351Windshield Wiper Blades.............................. 351Exhaust System ............................................ 353
Cooling System ............................................. 354Charge Air Cooler — Inter-Cooler ................. 357
Brake System ............................................... 358
Automatic Transmission ............................... 358
Rear Axle And 4x4 Front Driving Axle Fluid
Level .............................................................. 360
Transfer Case ............................................... 361
Noise Control System Required
Maintenance & Warranty ............................. 361
Fuses.............................................................. 364
Bulb Replacement......................................... 371
TIRES..................................................................... 376
Tire Safety Information ................................. 376
Tires — General Information ......................... 383
Tire Types....................................................... 386
Spare Tires — If Equipped ............................. 387
Wheel And Wheel Trim Care ......................... 389
Snow Traction Devices ................................. 390
Tire Rotation Recommendations ................. 391
DEPARTMENT OF TRANSPORTATION
UNIFORM TIRE QUALITY GRADES ................... 392
Treadwear ...................................................... 392
Traction Grades ............................................. 393Temperature Grades ..................................... 393 STORING THE VEHICLE ....................................... 393
BODYWORK .......................................................... 393
Protection From Atmospheric Agents .......... 393
Body And Underbody Maintenance ............. 394
Preserving The Bodywork ............................. 394
INTERIORS ........................................................... 395
Seats And Fabric Parts ................................. 395
Plastic And Coated Parts .............................. 395
Leather Surfaces........................................... 396
Glass Surfaces ............................................. 396
TECHNICAL SPECIFICATIONS
VEHICLE IDENTIFICATION NUMBER (VIN) ....... 397
BRAKE SYSTEM .................................................. 397Hydraulic Brake Assist — If Equipped .......... 397
WHEEL AND TIRE TORQUE SPECIFICATIONS .. 397
Torque Specifications ................................... 397
FUEL REQUIREMENTS— GASOLINE ENGINE .... 399
6.4L Engine ................................................... 399
Reformulated Gasoline................................. 399
Materials Added To Fuel ............................... 399
Gasoline/Oxygenate Blends ......................... 399
Do Not Use E-85 In Non-Flex Fuel
Vehicles ......................................................... 400
CNG And LP Fuel System Modifications ...... 400Methylcyclopentadienyl Manganese
Tricarbonyl (MMT) In Gasoline ..................... 400Fuel System Cautions ................................... 400

22_DPF_OM_EN_USC_t.book Page 7

GETTING TO KNOW YOUR VEHICLE21
TO EXIT REMOTE START MODE
To drive the vehicle after starting the Remote Start
system, push and release the START/STOP ignition
button while pressing the brake pedal prior to the
end of the 15 minute cycle.
The Remote Start system will turn the engine off if
the Remote Start button on the key fob is pushed
again, or if the engine is allowed to run for the
entire 15 minute cycle. Once the ignition is placed
in the ON/RUN position, the climate controls will
resume the previously set operations
(temperature, blower control, etc.).
NOTE:
For vehicles equipped with the Keyless Enter ‘n
Go™ — Passive Entry feature, the message
“Remote Start Active — Push Start Button” will
display in the instrument cluster display until
you push the START/STOP ignition button.
To avoid unintentional shutdowns, the system
will disable for two seconds after receiving a
valid Remote Start request.
REMOTE START FRONT DEFROST
A
CTIVATION — IF EQUIPPED
When Remote Start is active, and the outside
ambient temperature is 40°F (4.5°C) or below, the
system will automatically activate front defrost for
15 minutes or less. The time is dependent on the
ambient temperature. Once the timer expires, the system will automatically adjust the settings
depending on ambient conditions. See “Remote
Start Comfort Systems — If Equipped” in the next
section for detailed operation.
REMOTE START COMFORT SYSTEMS —
I
F EQUIPPED
When Remote Start is activated, the front and rear
defrost will automatically turn on in cold weather.
The heated steering wheel and driver heated seat
feature will turn on if programmed in the comfort
menu screen within Uconnect Settings
Ú page 191. In warm weather, the driver vented
seat feature will automatically turn on when
Remote Start is activated, if programmed in the
comfort menu screen. The vehicle will adjust the
climate control settings depending on the outside
ambient temperature.
Automatic Temperature Control (ATC) —
If Equipped
The climate controls automatically adjust to an
optimal temperature and mode, dependent on the
outside ambient temperature. When the ignition is
placed in the ON/RUN position, the climate
controls will resume their previous settings.
Manual Temperature Control (MTC) — If Equipped
In ambient temperatures of 40°F (4.5°C) or
below, the climate settings will default to
maximum heat, with fresh air entering the cabin. If the front defrost timer expires, the
vehicle will enter Mix Mode.
In ambient temperatures from 40°F (4.5°C) to
78°F (26°C), the climate settings will be based
on the last settings selected by the driver.
In ambient temperatures of 78°F (26°C) or
above, the climate settings will default to MAX
A/C, Bi-Level mode, with Recirculation on.
For more information on ATC, MTC, and climate
control settings, see Ú page 54.
NOTE:These features will stay on through the duration of
Remote Start, or until the ignition is placed in the
ON/RUN position. The climate control settings will
change, and exit the automatic defaults, if
manually adjusted by the driver while the vehicle is
in Remote Start mode. This includes turning the
climate controls off using the OFF button.
REMOTE START WINDSHIELD WIPER
D
E–ICER ACTIVATION — IF EQUIPPED
When Remote Start is active and the outside
ambient temperature is less than 33°F (0.6°C),
the Windshield Wiper De-Icer will activate. Exiting
Remote Start will resume its previous operation. If
the Windshield Wiper De-Icer was active, the timer
and operation will continue.
2

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22GETTING TO KNOW YOUR VEHICLE
REMOTE START ABORT MESSAGE
The following messages will display in the
instrument cluster display if the vehicle fails to
remote start or exits Remote Start prematurely:
Remote Start Cancelled — Door Open
Remote Start Cancelled — Hood Open
Remote Start Cancelled — Fuel Low
Remote Start Cancelled — System Fault
Remote Start Disabled — Start Vehicle to Reset
The instrument cluster display message stays
active until the ignition is placed in the ON/RUN
position.
REMOTE START — IF EQUIPPED (DIESEL)
This system uses the key fob to start the
engine conveniently from outside the
vehicle while still maintaining security.
The system has a range of approximately
300 ft (91 m).
Remote Start is used to defrost windows in cold
weather, and to reach a comfortable climate in all
ambient conditions before the driver enters the
vehicle.
NOTE:
Obstructions between the vehicle and the key
fob may reduce this range.
The Remote Start system will wait for the Wait
To Start Light Úpage 101 to extinguish before
cranking the engine. This allows time for the
intake heater to preheat the incoming air, and is
normal operation in cold weather Ú page 412.
HOW TO USE REMOTE START
Push and release the Remote Start button on the
key fob twice within five seconds. The vehicle
doors will lock, the parking lights will flash, and the
horn will chirp twice (if programmed). Then, the
engine will start, and the vehicle will remain in the
Remote Start mode for a 15 minute cycle.
Pushing the Remote Start button a third time shuts
the engine off.
To drive the vehicle, push the unlock button, and
place the ignition in the ON/RUN position.
All of the following conditions must be met before
the engine will remote start:
Gear selector in PARK
Doors closed
Hood closed
Hazard switch off
Brake switch inactive (brake pedal not pressed)
Battery at an acceptable charge level
PANIC button not pushed
Fuel meets minimum requirement
Water In Fuel Indicator Light is not illuminated
Wait To Start Light is not illuminated
Malfunction Indicator Light (MIL) is not illumi -
nated
For additional functions of the Remote Start
system, see Ú page 21
WARNING!
Do not start or run an engine in a closed
garage or confined area. Exhaust gas contains
Carbon Monoxide (CO) which is odorless and
colorless. Carbon Monoxide is poisonous and
can cause serious injury or death when
inhaled.
Keep key fobs away from children. Operation
of the Remote Start system, windows, door
locks or other controls could cause serious
injury or death.

22_DPF_OM_EN_USC_t.book Page 22

54GETTING TO KNOW YOUR VEHICLE
RAIN SENSING WIPERS — IF EQUIPPED
This feature senses rain or snowfall on the
windshield and automatically activates the wipers.
Rotate the end of the multifunction lever to one of
five detent positions to activate this feature.
The sensitivity of the system can be adjusted with
the multifunction lever. Wiper delay position 1 is
the least sensitive, and wiper delay position 5 is
the most sensitive. Position 3 should be used for
normal rain conditions. Positions 1 and 2 can be
used if the driver desires less wiper sensitivity.
Positions 4 and 5 can be used if the driver desires
more sensitivity. Place the wiper switch in the
O (off) position when not using the system.
NOTE:
The Rain Sensing feature will not operate when
the wiper switch is in the low or high-speed posi -
tion.
The Rain Sensing feature may not function prop -
erly when ice, or dried salt water is present on
the windshield.
Use of Rain-X or products containing wax or sili-
cone may reduce Rain Sensing performance.
The Rain Sensing feature can be turned on and
off using the Uconnect system Ú page 191.The Rain Sensing system has protection features
for the wiper blades and arms, and will not operate
under the following conditions:
Low Ambient Temperature
— When the ignition
is first placed in the ON position, the Rain
Sensing system will not operate until the wiper
switch is moved, vehicle speed is greater than
0 mph (0 km/h), or the outside temperature is
greater than 32°F (0°C).
Transmission In NEUTRAL Position — When the
ignition is ON, and the transmission is in the
NEUTRAL position, the Rain Sensing system will
not operate until the wiper switch is moved,
vehicle speed is greater than 5 mph (8 km/h),
or the gear selector is moved out of the
NEUTRAL position.
Remote Start Mode Inhibit — On vehicles
equipped with the Remote Start system, Rain
Sensing wipers are not operational when the
vehicle is in the Remote Start mode. Once the
operator is in the vehicle and has placed the
ignition switch in the RUN position, Rain Sensing
wiper operation can resume, if it has been
selected, and no other inhibit conditions
(mentioned previously) exist.
CLIMATE CONTROLS
The Climate Control system allows you to regulate
the temperature, air flow, and direction of air
circulating throughout the vehicle. The controls are
located on the touchscreen (if equipped), on the
sides of the touchscreen, or on the instrument
panel below the radio.
AUTOMATIC CLIMATE CONTROL
D
ESCRIPTIONS AND FUNCTIONS

Uconnect 5/5 NAV With 8.4–inch Display Automatic
Temperature Controls

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GETTING TO KNOW YOUR VEHICLE55

Uconnect 5 NAV With 12–inch Display Automatic Temperature Controls

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. Pressing other settings
will also cause the MAX A/C 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. 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 touchscreen.

Push the button on the faceplate.
Toggling this function will cause the system to
switch between manual mode and automatic
mode Ú page 60.
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
2

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GETTING TO KNOW YOUR VEHICLE57
Touchscreen
Use the small blower icon to reduce the blower
setting and the large blower icon to increase the
blower setting. Blower can also be selected by
pressing the blower bar area between the icons.
Mode Control
Select Mode by pressing one of the Mode
buttons on the touchscreen, or pushing
the Mode button on the faceplate, to
change the airflow distribution mode.
The airflow distribution mode can be adjusted so
air comes from the instrument panel outlets, floor
outlets, defrost outlets, and demist outlets.
Faceplate
Push the Mode Button to change the airflow
distribution mode. The airflow distribution mode
can be adjusted so air comes from the instrument
panel outlets, floor outlets, defrost outlets and
demist outlets.
Touchscreen
Press one of the “MODE” buttons to change the
airflow distribution mode. The airflow distribution
mode can be adjusted so air comes from the
instrument panel outlets, floor outlets, defrost
outlets and demist outlets.
Panel Mode
Air comes from the outlets in the
instrument panel. Each of these outlets
can be individually adjusted to direct the
flow of air. The air vanes of the center
outlets and outboard outlets can be moved up and
down or side to side to regulate airflow direction.
There is a shut-off wheel located below the air
vanes to shut off or adjust the amount of airflow
from these outlets.
Bi-Level Mode
Air comes from the instrument panel
outlets and floor outlets. A slight amount
of air is directed through the defrost and
side window demister outlets.
NOTE:Bi-Level mode is designed under comfort condi -
tions to provide cooler air out of the panel outlets
and warmer air from the floor outlets.
Floor Mode
Air comes from the floor outlets. A slight
amount of air is directed through the
defrost and side window demister
outlets.
Mix Mode
Air is directed through the floor, defrost,
and side window demister outlets. This
setting works best in cold or snowy
conditions that require extra heat to the
windshield. This setting is good for maintaining
comfort while reducing moisture on the
windshield.
Climate Control OFF Button
Press and release the OFF button on the
touchscreen, or push the OFF button on
the faceplate (if equipped) to turn the
Climate Control on/off.
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58GETTING TO KNOW YOUR VEHICLE
MANUAL CLIMATE CONTROL
D
ESCRIPTIONS AND FUNCTIONS

Uconnect 3 With 5-inch Display Manual Temperature
Controls
Uconnect 5 With 8.4-inch Display Manual Temperature Controls

MAX A/C Setting
Set the temperature control knob to the
MAX A/C setting to change the current
setting to the coldest output of air.
Moving the temperature control knob
away from the MAX A/C setting causes the
MAX A/C operation to exit.
A/C Button
Push the A/C button to engage the Air
Conditioning (A/C). The A/C indicator
illuminates when A/C is on.
Recirculation Button
Push the Recirculation button 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
humidity are present. Recirculation can be used in
all modes except for Defrost. Recirculation may be
unavailable 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. On vehicles equipped with the Manual Climate
Controls system, the Recirculation mode is not
allowed in Defrost mode to improve window
clearing operation. Recirculation is disabled
automatically if this mode is selected. Attempting
to use Recirculation while in this mode causes the
LED in the control button to link, and then turn off.
Front Defrost Setting
Turn the mode control knob to the Front
Defrost mode setting. 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.
Rear Defrost Button
Push and release the Rear Defrost
Control button to turn on the rear window
defroster and the heated outside mirrors
(if equipped). The Rear Defrost indicator
illuminates when the rear window defroster is on.
The rear window defroster automatically turns off
after 10 minutes.

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GETTING TO KNOW YOUR VEHICLE59
Temperature Control
Temperature Control regulates the temperature of
the air forced through the climate system.
The temperature increases as you turn
the temperature control knob clockwise.
The temperature decreases as you turn
the temperature control knob
counterclockwise.
Blower Control
Blower Control regulates the amount of
air forced through the climate control
system. There are seven blower speeds
available. The blower speed increases as
you turn the blower control knob clockwise from
the lowest blower setting. The blower speed
decreases as you turn the blower control knob
counterclockwise.
Mode Control
Turn the mode control knob to adjust
airflow distribution. The airflow
distribution mode can be adjusted so air
comes from the instrument panel
outlets, floor outlets, defrost outlets and demist
outlets.
Panel Mode
Air comes from the outlets in the
instrument panel. Each of these outlets
can be individually adjusted to direct the
flow of air. The air vanes of the center
outlets and outboard outlets can be moved up and
down or side to side to regulate airflow direction.
There is a shut-off wheel located below the air
vanes to shut off or adjust the amount of airflow
from these outlets.
Bi-Level Mode
Air comes from the instrument panel
outlets and floor outlets. A slight amount
of air is directed through the defrost and
side window demister outlets.
NOTE:Bi-Level mode is designed under comfort condi -
tions to provide cooler air out of the panel outlets
and warmer air from the floor outlets.
Floor Mode
Air comes from the floor outlets. A slight
amount of air is directed through the
defrost and side window demister
outlets.
Mix Mode
Air is directed through the floor, defrost,
and side window demister outlets. This
setting works best in cold or snowy
conditions that require extra heat to the
windshield. This setting is good for maintaining
comfort while reducing moisture on the
windshield.
CAUTION!
Failure to follow these cautions can cause
damage to the heating elements:
Use care when washing the inside of the rear
window. Do not use abrasive window cleaners
on the interior surface of the window. Use a
soft cloth and a mild washing solution, wiping
parallel to the heating elements. Labels can
be peeled off after soaking with warm water.
Do not use scrapers, sharp instruments, or
abrasive window cleaners on the interior
surface of the window.
Keep all objects a safe distance from the
window.
2

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