air condition Ram 2500 2020 Owner's Manual

8
ENHANCED ACCIDENT RESPONSE SYSTEM
(EARS) ................................................................ 371
EVENT DATA RECORDER (EDR) ....................... 371
BULB REPLACEMENT ........................................ 372 Replacement Bulbs ...................................372
Replacing Exterior Bulbs ...........................374
SERVICING AND MAINTENANCE
SCHEDULED SERVICING — GAS ENGINE ....... 380Maintenance Plan — Gasoline Engine......380
Heavy Duty Use Of The Vehicle ................. 384
SCHEDULED SERVICING— DIESEL ENGINE .... 384
Oil Change Indicator System — Cummins
Diesel ..........................................................385 Perform Service Indicator — Cummins
Diesel ..........................................................385
Maintenance Plan — Cummins Diesel
Engine ........................................................ 386
ENGINE COMPARTMENT .................................. 391
6.4L Engine ...............................................391
6.7L Diesel Engine — Six-Speed 68RFE ..392
6.7L Diesel Engine — Six-Speed
AS69RC HD ................................................393 Checking Oil Level — Gas Engine .............394
Checking Oil Level — Diesel Engine ..........394
Adding Washer Fluid..................................394
Maintenance-Free Battery .......................395
Pressure Washing ......................................395 DEALER SERVICE ..............................................396
Engine Oil .................................................. 396
Engine Oil Filter .......................................... 398
Engine Air Cleaner Filter............................ 398
Air Conditioner Maintenance .................... 400
Accessory Drive Belt Inspection ............... 403
Draining Fuel/Water Separator Filter —
Diesel Engine ............................................ 403 Engine Mounted Fuel Filter Replacement —
Diesel Engine ............................................. 405 Underbody Mounted Fuel Filter
Replacement — Diesel Engine .................. 406 Priming If The Engine Has Run Out Of
Fuel — Diesel Engine ................................. 407 Intervention Regeneration Strategy —
Message Process Flow ............................. 407 Diesel Exhaust Fluid .................................. 408
Body Lubrication ........................................ 408
Windshield Wiper Blades .......................... 409
Exhaust System ........................................ 410
Cooling System ......................................... 411
Charge Air Cooler — Inter-Cooler .............. 415
Brake System ............................................ 415
Automatic Transmission............................ 416
Rear Axle And 4x4 Front Driving Axle Fluid
Level .......................................................... 418 Transfer Case ............................................ 419
Noise Control System Required
Maintenance & Warranty ......................... 419 HOISTING ........................................................... 422
TIRES ................................................................... 422
Tire Safety Information.............................. 422
Tires — General Information .................... 428
Tire Types ................................................... 432
Spare Tires — If Equipped ......................... 433
Wheel And Wheel Trim Care ..................... 434
Tire Chains And Traction Devices ............ 435
Tire Rotation Recommendations ............. 436
DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES .................................... 438
Treadwear .................................................. 438
Traction Grades ......................................... 438
Temperature Grades ................................. 438
STORING THE VEHICLE ..................................... 439
BODYWORK ........................................................ 439
Protection From Atmospheric Agents....... 439
Body And Underbody Maintenance .......... 439
Preserving The Bodywork.......................... 440
INTERIORS ......................................................... 442
Seats And Fabric Parts .............................. 442
Plastic And Coated Parts........................... 442
Leather Parts ............................................. 443
Glass Surfaces .......................................... 443

20_DJD2_OM_EN_USC_t.book Page 8

22GETTING TO KNOW YOUR VEHICLE
Le présent appareil est conforme aux CNR
d`Innovation, Science and Economic Develop -
ment applicables aux appareils radio exempts
de licence. L'exploitation est autorisée aux deux
conditions suivantes:

1. l'appareil ne doit pas produire de brouil -
lage, et

2. l'utilisateur de l'appareil doit accepter tout brouillage radioélectrique subi, même si le
brouillage est susceptible d'en comprom -
ettre le fonctionnement.
La operación de este equipo está sujeta a las
siguientes dos condiciones:

1. es posible que este equipo o dispositivo no cause interferencia perjudicial y

2. este equipo o dispositivo debe aceptar cual -
quier interferencia, incluyendo la que
pueda causar su operación no deseada.
NOTE:
Changes or modifications not expressly
approved by the party responsible for compli -
ance could void the user’s authority to operate
the equipment.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).
NOTE:
Obstructions between the vehicle and the
key fob may reduce this range.
The Remote Start system will wait for the
“Wait To Start” Indicator Light 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.
Refer to “Wait To Start Light,” located in
“Warning Lights And Messages” in “Getting
To Know Your Instrument Panel” for more
information.
How To Use Remote Start
All of the following conditions must be met
before the engine will remote start:
Transmission in PARK
Doors closed
Hood closed
Hazard switch off
Brake switch inactive (brake pedal not
pushed)
Battery at an acceptable charge level
PANIC button not pushed
Fuel meets minimum requirement
Water In Fuel Indicator Light is not illumi -
nated
Wait To Start Light Indicator Light is not illu -
minated
Malfunction Indicator Light is not illuminated

20_DJD2_OM_EN_USC_t.book Page 22

GETTING TO KNOW YOUR VEHICLE23
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 Aborted — Door Open
Remote Start Aborted — Hood Open
Remote Start Aborted — Fuel Low
Remote Start Aborted — System Fault
The instrument cluster display message is
stored until the ignition is placed in the ON/RUN
position.
To Enter Remote Start Mode
Push and release the Remote Start button on
the key fob twice, within five seconds. The
parking lights will flash and the horn will chirp
twice (if programmed). In cold ambient
temperature conditions, the diesel vehicle may
delay crank up to 30 seconds for the Intake Air
Heater. Once the vehicle has started, the
engine will run for 15 minutes.
NOTE:
Crank may be delayed up to 75 seconds for
intake air heater operation at high altitudes,
and/or extreme cold.
The park lamps will turn on and remain on
during Remote Start mode.
For security, power window and power
sunroof operation (if equipped) are disabled
when the vehicle is in the Remote Start
mode.
Additional features, such as windshield
wipers, will also not be available while the
vehicle is in the Remote Start mode.
The engine can be started two consecutive
times (two 15 minute cycles) with the key
fob. However, the ignition switch must be placed in the ON/RUN position before you
can repeat the start sequence for a third
cycle.
To Exit Remote Start Mode Without Driving
The Vehicle
Push and release the Remote Start button one
time or allow the engine to run for the entire
15 minute cycle.
NOTE:
To avoid unintentional shut downs, the system
will disable for two seconds after receiving a
valid Remote Start request.
To Exit Remote Start Mode And Drive The
Vehicle
To exit Remote Start Mode and drive the vehicle
before the end of the 15 minute cycle, push and
release the unlock button on the key fob to
unlock the door and disarm the vehicle security
alarm System (if equipped). Then, prior to the
end of the 15 minute cycle, place the ignition in
the ON/RUN position.
NOTE:
The ignition switch must be in the ON/RUN posi
-
tion in order to drive the vehicle.
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. Opera -
tion of the Remote Start System, windows,
door locks or other controls could cause
serious injury or death.
2

20_DJD2_OM_EN_USC_t.book Page 23

GETTING TO KNOW YOUR VEHICLE57
NOTE:
The Rain Sensing feature will not operate
when the wiper switch is in the low or
high-speed position.
The Rain Sensing feature may not function
properly when ice, or dried salt water is
present on the windshield.
Use of Rain-X or products containing wax or
silicone may reduce Rain Sensing perfor -
mance.
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 igni-
tion 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 Remote Starting 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 condi -
tions (mentioned previously) exist.
CLIMATE CONTROLS
The Climate Control system allows you to regu -
late 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.
Manual Climate Control Overview

Manual Climate Controls

2

20_DJD2_OM_EN_USC_t.book Page 57

58GETTING TO KNOW YOUR VEHICLE
Icon Description
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 the 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 pushed. 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.
Temperature Control
Temperature Control regulates the temperature of the air forced through the Climate Control 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.

20_DJD2_OM_EN_USC_t.book Page 58

GETTING TO KNOW YOUR VEHICLE59

Mode Control
Turn the Mode Control knob to adjust the airflow distribution. The airflow distribution mode can be adjusted so air comes
from the instrument panel outlets, floor outlets, defrost outlets and demist outlets. The Mode settings are as follows:
Panel Mode 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 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 conditions to provide cooler air out of the panel outlets and warmer air from the
floor outlets.
Floor Mode
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 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.
Icon Description
2

20_DJD2_OM_EN_USC_t.book Page 59

GETTING TO KNOW YOUR VEHICLE63
NOTE:
Icons and descriptions can vary based upon vehicle equipment.
Icon Description
MAX A/C
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:
The MAX A/C button is only available on the touchscreen.
Faceplate A/C Button
Touchscreen A/C Button A/C Button
Press and release the button on the touchscreen, or push and release 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 to change the system between recirculation mode and outside air mode. The Recirculation
indicator illuminates when Recirculation is on. 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.2

20_DJD2_OM_EN_USC_t.book Page 63

GETTING TO KNOW YOUR VEHICLE67
Panel ModePanel 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 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 conditions to provide cooler air out of the panel outlets and warmer air from the
floor outlets.
Floor Mode
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 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 this button to turn the Climate Control ON/OFF.
Icon Description
2

20_DJD2_OM_EN_USC_t.book Page 67

68GETTING TO KNOW YOUR VEHICLE
Climate Control Functions
A/C (Air Conditioning)
The Air Conditioning (A/C) button allows the
operator to manually activate or deactivate the
air conditioning system. When the air condi -
tioning system is turned on, cool dehumidified
air will flow through the outlets into the cabin.
For improved fuel economy, press the A/C
button to turn off the air conditioning and manu -
ally adjust the blower and airflow mode settings.
Also, make sure to select only Panel, Bi-Level, or
Floor modes.
NOTE:
For Manual Climate Controls, if the system is
in Mix, Floor or Defrost Mode, the A/C can be
turned off, but the A/C system shall remain
active to prevent fogging of the windows.
If fog or mist appears on the windshield or
side glass, select Defrost mode, and increase
blower speed if needed.
If your air conditioning performance seems
lower than expected, check the front of the
A/C condenser (located in front of the radi -
ator), for an accumulation of dirt or insects. Clean with a gentle water spray from the front
of the radiator and through the condenser.
MAX A/C
MAX A/C sets the control for maximum cooling
performance.
Press and release to toggle between MAX A/C
and the prior settings. The button illuminates
when MAX A/C is on.
In MAX A/C, the blower level and mode position
can be adjusted to desired user settings.
Pressing other settings will cause the MAX A/C
operation to switch to the selected setting and
MAX A/C to exit.
Recirculation
In cold weather, use of Recirculation mode may
lead to excessive window fogging. The Recircu -
lation feature may be unavailable (button on
the touchscreen greyed out) if conditions exist
that could create fogging on the inside of the
windshield.
On systems with Manual Climate Controls, if
equipped, 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
blink and then turns off.
Automatic Temperature Control (ATC)
Automatic Operation

1. Push the AUTO button on the faceplate, or the AUTO button on the touchscreen on the
Automatic Temperature Control (ATC)
Panel.

2. Next, adjust the temperature you would like the system to maintain by adjusting the
driver and passenger temperature control
buttons. Once the desired temperature is
displayed, the system will achieve and auto -
matically maintain that comfort level.
3. When the system is set up for your comfort level, it is not necessary to change the
settings. You will experience the greatest
efficiency by simply allowing the system to
function automatically.

20_DJD2_OM_EN_USC_t.book Page 68

GETTING TO KNOW YOUR VEHICLE69
NOTE:
It is not necessary to move the temperature
settings for cold or hot vehicles. The system
automatically adjusts the temperature,
mode, and blower speed to provide comfort
as quickly as possible.
The temperature can be displayed in U.S. or
Metric units by selecting the U.S./Metric
customer-programmable feature. Refer to
the “Uconnect Settings” in “Multimedia” for
further information.
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.
Operating Tips
NOTE:
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 recom -
mended, because it may cause window fogging.
Vacation/Storage
Before you store your vehicle, or keep it out of
service (i.e., vacation) for two weeks or more,
run the air conditioning system at idle for about
five minutes, in fresh air with the blower setting
on high. This will ensure adequate system lubri -cation to minimize the possibility of compressor
damage when the system is started again.
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.
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

20_DJD2_OM_EN_USC_t.book Page 69