air filter Ram 2500 2020 Owner's Guide

SERVICING AND MAINTENANCE407
Priming If The Engine Has Run Out Of Fuel —
Diesel Engine

1. Add a substantial amount of fuel to the
tank, approximately 2 to 5 gal (8L to 19L).

2. Three priming cycles must be completed. Turn ignition to the RUN position and wait
approximately 30 seconds. This will activate
the in tank fuel pump. Turn the ignition
switch to the off position, and leave off for at
least 30 seconds. Repeat this procedure
three times before cranking the engine.
3. Start the engine using the “Normal Starting” procedure. Refer to “Starting Procedures”
in “Starting and Operating” for further infor -
mation.
4. Once the engine starts, allow the engine to idle for a minimum of 30 seconds. NOTE:
The engine may run rough until the air is forced
from all the fuel lines.
NOTE:
A maximum blend of 5% biodiesel, meeting
ASTM specification D-975 may be used with
your Cummins diesel engine. (Chassis Cab
models not configured with B20 capability.)
A maximum blend of 20% biodiesel, meeting
ASTM specification D-7467 may be used with
your Cummins diesel engine. (Pickup models
and Chassis Cab models configured with B20
capability.)
Use of biodiesel mixture in excess of 20% can
negatively impact the fuel filter's ability to
separate water from the fuel, resulting in
high pressure fuel system corrosion or
damage.
Ethanol blends are not recommended or
approved for use with your Cummins diesel
engine.
In addition, commercially available fuel addi
-
tives are not necessary for the proper opera -
tion of your Cummins diesel engine.
Intervention Regeneration Strategy —
Message Process Flow
The Cummins diesel engine meets all Environ -
mental Protection Agency (EPA) Heavy Duty
Diesel Engine Emissions Standards, resulting in
one of the lowest emitting diesel engines ever
produced.
To achieve these emissions standards, your
vehicle is equipped with a state-of-the-art
engine and exhaust system. The engine and
WARNING!
Do not open the high pressure fuel system
with the engine running. Engine operation
causes high fuel pressure. High pressure fuel
spray can cause serious injury or death.
CAUTION!
Do not engage the starter motor for more
than 15 seconds at a time. Allow two minutes
between the cranking intervals.
WARNING!
Do not use alcohol or gasoline as a fuel
blending agent. They can be unstable under
certain conditions and be hazardous or
explosive when mixed with diesel fuel.
CAUTION!
Due to lack of lubricants in alcohol or
gasoline, the use of these fuels can cause
damage to the fuel system.
7

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416SERVICING AND MAINTENANCE
Automatic Transmission
Selection Of Lubricant
It is important to use the proper transmission
fluid to ensure optimum transmission perfor-
mance and life. Use only the manufacturer’s
specified transmission fluid. Refer to “Fluids
And Lubricants” in “Technical Specifications”. It
is important to maintain the transmission fluid
at the correct level using the recommended
fluid. No chemical flushes should be used in any
transmission; only the approved lubricant
should be used.
Special Additives
The manufacturer strongly recommends
against using any special additives in the trans -
mission. Automatic Transmission Fluid (ATF) is an engineered product and its performance
may be impaired by supplemental additives.
Therefore, do not add any fluid additives to the
transmission. The only exception to this policy is
the use of special dyes for diagnosing fluid
leaks in six-speed transmissions. Avoid using
transmission sealers as they may adversely
affect seals.
Fluid Level Check — Eight-Speed
Transmission
The fluid level is preset at the factory and does
not require adjustment under normal operating
conditions. Routine fluid level checks are not
required, therefore the transmission has no
dipstick. An authorized dealer can check your
transmission fluid level using special service
tools.
If you notice fluid leakage or transmission
malfunction, visit an authorized dealer immedi
-
ately to have the transmission fluid level
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 reser -
voir cap secured at all times. Brake fluid in
a 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
contaminate the brake fluid. Brake seal
components could be damaged, causing
partial or complete brake failure. This could
result in a collision.
WARNING! (Continued)
CAUTION!
Using a transmission fluid other than the
manufacturer’s recommended fluid may
cause deterioration in transmission shift
quality and/or torque converter shudder, and
(for six-speed transmissions) will require
more frequent fluid and filter changes. Refer
to “Fluids And Lubricants” in “Technical
Specifications” for fluid specifications.
CAUTION!
Do not use chemical flushes in your
transmission as the chemicals can damage
your transmission components. Such damage
is not covered by the New Vehicle Limited
Warranty.

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420SERVICING AND MAINTENANCE
The air filter element must also be clean and
serviced according to the instructions outlined
in the Scheduled Maintenance section of this
manual.
Tampering With Noise Control System
Prohibited
Federal law prohibits the following acts or the
causing thereof: (1) the removal or rendering
inoperative by any person, other than for
purposes of maintenance, repair, or replace -
ment, of any device or element of design incor -
porated into any new vehicle for the purpose of
noise control prior to its sale or delivery to the
ultimate purchaser or while it is in use, or (2) the
use of the vehicle after such device or element
of design has been removed or rendered inop -
erative by any person.
Among those acts presumed to constitute
tampering are the acts listed below. AIR CLEANER

Removal of the air cleaner.
Removal of the air cleaner filter element from
the air cleaner housing.
Removal of the air ducting.
EXHAUST SYSTEM
Removal or rendering inoperative exhaust
system components including the muffler or
tailpipe.
ENGINE COOLING SYSTEM
Removal or rendering inoperative the fan
clutch.
Removal of the fan shroud.
Noise Emission Warranty
The manufacturer warrants that this vehicle as
manufactured by the manufacturer, was
designed, built and equipped to conform at the
time it left the manufacturer's control with all
applicable U.S. EPA Noise Control Regulations.
This warranty covers this vehicle as designed,
built and equipped by the manufacturer, and is
not limited to any particular part, component or
system of the vehicle manufactured by the
manufacturer. Defects in design, assembly or in
any part, component or system of the vehicle as
manufactured by the manufacturer, which, at
the time it left the manufacturer's control,
caused noise emissions to exceed Federal stan -
dards, are covered by this warranty for the life of
the vehicle.

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448TECHNICAL SPECIFICATIONS
NOTE:
Intentional tampering with the emissions
control system can result in civil penalties being
assessed against you.
Carbon Monoxide Warnings
FUEL REQUIREMENTS – DIESEL ENGINE
Use good quality diesel fuel from a reputable
supplier in your vehicle. Federal law requires
that you must fuel this vehicle with Ultra Low
Sulfur Highway Diesel fuel (15 ppm Sulfur
maximum) and prohibits the use of Low Sulfur
Highway Diesel fuel (500 ppm Sulfur maximum)
to avoid damage to the emissions control
system.
For most year-round service, No. 2 diesel fuel
meeting ASTM (formerly known as the American
Society for Testing and Materials) specification
D-975 Grade S15 will provide good perfor -
mance. If the vehicle is exposed to extreme cold
(below 20°F or -7°C), or is required to operate
at colder-than-normal conditions for prolonged
periods, use climatized No. 2 diesel fuel or
dilute the No. 2 diesel fuel with 50% No. 1 diesel
fuel. This will provide better protection from fuel
gelling or wax-plugging of the fuel filters. Diesel fuel is seldom completely free of water.
To prevent fuel system trouble, drain the accu
-
mulated water from the fuel/water separator
using the fuel/water separator drain provided
on both fuel filters. If you buy good quality fuel
and follow the cold weather advice above, fuel
conditioners should not be required in your
vehicle. If available in your area, a high cetane
“premium” diesel fuel may offer improved
cold-starting and warm-up performance.
Fuel Specifications
The Cummins® Turbo Diesel engine has been
developed to take advantage of the high energy
content and generally lower cost No. 2 Ultra Low
Sulfur diesel fuel or No. 2 Ultra Low Sulfur clima-
tized diesel fuels. Experience has shown that it
also operates on No. 1 Ultra Low Sulfur diesel
fuels or other fuels within specification.
WARNING!
Carbon monoxide (CO) in exhaust gases is
deadly. Follow the precautions below to
prevent carbon monoxide poisoning:
Do not inhale exhaust gases. They contain
carbon monoxide, a colorless and odorless
gas, which can kill. Never run the engine in
a closed area, such as a garage, and never
sit in a parked vehicle with the engine
running for an extended period. If the
vehicle is stopped in an open area with the
engine running for more than a short
period, adjust the ventilation system to
force fresh, outside air into the vehicle.
Guard against carbon monoxide with
proper maintenance. Have the exhaust
system inspected every time the vehicle is
raised. Have any abnormal conditions
repaired promptly. Until repaired, drive with
all side windows fully open.WARNING!
Do not use alcohol or gasoline as a fuel
blending agent. They can be unstable under
certain conditions and hazardous or
explosive when mixed with diesel fuel.
CAUTION!
If the “Water in Fuel Indicator Light” remains
on, DO NOT START engine before you drain
the water from the fuel filter(s) to avoid
engine damage. Refer to “Draining Fuel/
Water Separator Filter” in “Servicing And
Maintenance” for further information.

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540
INDEX
A
Adaptive Cruise Control (ACC) (Cruise
Control)
.......................................................... 275
Adding Engine Coolant (Antifreeze)............... 413
Adding Fuel.......................................... 312, 313
Additives, Fuel............................................... 446AdjustDown
........................................................... 34
Forward....................................................... 34
Rearward..................................................... 34
Up................................................................ 34
Adjustable Pedals............................................ 43
Air BagAir Bag Operation
...................................... 184
Air Bag Warning Light................................ 181Enhanced Accident Response......... 189, 371
Event Data Recorder (EDR)....................... 371
If Deployment Occurs................................ 188Knee Impact Bolsters................................ 184
Maintaining Your Air Bag System.............. 189
Maintenance............................................. 189Redundant Air Bag Warning Light.............182
Transporting Pets...................................... 208
Air Bag Light............................... 130, 181, 209
Air Cleaner, Engine (Engine Air Cleaner
Filter)
................................................... 398, 419
Air Conditioner Maintenance........................ 400
Air Conditioner Refrigerant........................... 400
Air Conditioner System................................. 400
Air Conditioning......................................... 57, 68
Air Conditioning Filter..............................70, 401
Air Conditioning System................................... 68Air Conditioning, Operating Tips....................... 69
Air Filter........................................................ 398
Air PressureTires
......................................................... 429
AlarmPanic
........................................................... 15
Security Alarm....................................25, 131
Alterations/ModificationsVehicle
......................................................... 12Android Auto................................................. 533
Antifreeze (Engine Coolant)................. 412, 451
Capacites................................................. 451Disposal................................................... 414
Anti-Lock Brake System (ABS)...................... 144
Anti-Lock Warning Light................................ 136Apple CarPlay................................................ 533
Assist, Hill Start............................................. 151
Audio Systems (Radio).................................. 458
Auto Down Power Windows............................. 71
Automatic Door Locks...................................... 31
Automatic Headlights.......................................51
Automatic Tailgate Release.............................75
Automatic Temperature Control (ATC)..............68
Automatic Transmission....................... 233, 418
Adding Fluid.............................................. 418
Fluid And Filter Change............................. 418Fluid Change............................................. 418
Fluid Level Check............................. 416, 417
Fluid Type...............................416, 454, 457
Shifting..................................................... 237
Special Additives...................................... 416
Automatic Transmission Limp Home Mode... 236
AUX Camera......................................... 304, 311
Auxiliary Driving Systems.............................. 153
Axle Fluid.....................................418, 454, 457Axle Lubrication............................................ 418
B
Back-Up
......................................................... 302
Back-Up Camera........................................... 302
Bar, Stabilizer/Sway System......................... 253Battery................................................. 132, 395
Blanket..................................................... 223
Charging System Light.............................. 132Keyless Key Fob Replacement....................15
Battery Saver Feature......................................53

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542
Differential, Limited Slip
................................ 264
Disabled Vehicle Towing................................ 369
Disposal Antifreeze (Engine Coolant)
....................... 414
Do Not Disturb............................................... 532
Door Ajar........................................................ 133
Door Ajar Light............................................... 133Door LocksAutomatic
.................................................... 31
Doors............................................................... 27Draining Fuel/Water Separator Filter............ 403
Driver’s Seat Back Tilt..................................... 32
DrivingOff-Pavement
............................................ 255
Off-Road.................................................... 255Through Flowing, Rising, Or Shallow Standing Water
..................................... 335
Dual Rear Wheels................................ 437, 444
E
Electric Brake Control System
....................... 145
Anti-Lock Brake System............................. 144
Electronic Roll Mitigation................. 149, 153
Electrical Power Outlets................................... 88Electronic Range Select (ERS)............. 236, 241
Electronic Stability Control (ESC)...................146
Electronic Throttle Control Warning Light...... 132
Electronically Shifted Transfer Case.............. 244
Emergency Braking........................................ 229
Emergency, In Case OfFreeing Vehicle When Stuck
..................... 367
Hazard Warning Flasher........................... 338
Jump Starting........................................... 362
Emission Control System Maintenance........ 142
Engine......................................... 391, 392, 393
Air Cleaner................................................ 398Block Heater.................................... 218, 227
Break-In Recommendations..................... 228
Compartment.................................. 392, 393Compartment Identification...................... 391
Coolant (Antifreeze)......................... 452, 454
Exhaust Gas Caution....................... 208, 448
Fails To Start............................................ 214
Flooded, Starting...................................... 214Fuel Requirements.......................... 446, 451
Identifcation.................................... 392, 393
Idling........................................................ 224
Jump Starting........................................... 362Oil..................................396, 451, 452, 454
Oil Filler Cap.................................... 391, 397
Oil Filter.................................................... 398
Oil Reset................................................... 119
Oil Selection.................................... 396, 451
Oil Synthetic............................................. 398
Overheating.............................................. 367
Runaway................................................... 312
Starting..................................................... 212
Engine Oil Viscosity....................................... 397
Enhanced Accident Response
Feature
................................................ 189, 371
Entry System, Illuminated................................55
Ethanol.......................................................... 446
Exhaust Brake............................................... 230
Exhaust Gas Cautions.......................... 208, 448
Exhaust System..........................208, 410, 419Exterior Lighting...............................................49
Exterior Lights........................................ 49, 210
F
FiltersAir Cleaner
................................................ 398
Air Conditioning................................. 70, 401
Engine Fuel............................................... 403
Engine Oil...............................398, 452, 454
Engine Oil Disposal................................... 398
FlashersTurn Signals
.............................. 52, 140, 210
Flash-To-Pass...................................................51
Flat Tire Stowage.......................................... 350
Fluid Capacities............................................ 451
Fluid Leaks.................................................... 210
Fluid Level ChecksBrake........................................................ 415
Fluid, Brake................................................... 454
Fluids And Lubricants........................... 452, 454
Fog Lights.............................................. 52, 376
Fold Flat Load Floor.........................................86
Fold-Flat Seats.................................................32

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543
Forward Collision Warning
............................. 160
Four Wheel Drive........................................... 244
Four-Way Hazard Flasher............................... 338
Freeing A Stuck Vehicle................................. 367
Front Axle (Differential).................................. 418
Fuel..................................................... 446, 448
Adding............................................. 312, 313Additives................................................... 446
Capacity.................................................... 451
Clean Air.................................................... 446Diesel.............................................. 448, 454
Ethanol...................................................... 446
Filler Cap (Gas Cap)................................... 313
Filter.......................................................... 403
Gasoline.................................................... 446Light.......................................................... 135
Materials Added........................................ 446
Methanol................................................... 446
Octane Rating................................. 446, 452Requirements........................ 446, 448, 451
Specifications............................................ 448
Tank Capacity............................................ 451
Fueling........................................................... 313
Fuses............................................................. 353
G
Garage Door Opener (HomeLink)
.................... 76
Gas Cap (Fuel Filler Cap)............................... 313
Gasoline, Clean Air........................................ 446
Gasoline, Reformulated................................. 446
Gauges Voltage
..................................................... 221
Gear Ranges................................................. 238
Gear Selector Override................................. 365
Glass Cleaning.............................................. 443
Gross Axle Weight Rating.............................. 319
Gross Vehicle Weight Rating......................... 318GuideBody Builders
.............................................. 12
GVWR............................................................ 317
H
HazardDriving Through Flowing, Rising, Or Shallow Standing Water
.................................... 335
Hazard Warning Flashers.............................. 338
Head Restraints............................................... 39
Head Rests...................................................... 39
Headlights.................................................... 374
Automatic High Beam.................................. 50
Cleaning................................................... 439
High Beam................................................... 50
Lights On Reminder..................................... 52
Passing........................................................ 51Switch.......................................................... 49
Heated Mirrors................................................. 47
Heater, Engine Block.................................... 227
Hill Descent Control...................................... 149
Hill Descent Control Indicator....................... 149
Hill Start Assist.............................................. 151
HitchesTrailer Towing
........................................... 322
Hoisting......................................................... 422
HomeLink (Garage Door Opener).....................76
Hood Prop........................................................74
Hood Release...................................................74
Hub Caps...................................................... 352
I
Idle-Up Feature
............................................. 224Ignition.............................................................18
Switch..........................................................18
Illuminated Entry..............................................55
In Vehicle HelpVehicle User Guide
......................................13
Inside Rearview Mirror.................... 43, 44, 338
Instrument Cluster............ 113, 114, 116, 117
Descriptions.............................................. 140
Display...................................................... 117
Engine Oil Reset....................................... 119
Instrument Panel Lens Cleaning................... 443
Integrated Trailer Brake Control.................... 325
Interior Appearance Care.............................. 442
Interior Lights...................................................53Intermittent Wipers (Delay Wipers)..................55
Intervention Regeneration Strategy..... 124, 407
Inverter Outlet (115V)......................................90
iPod/USB/MP3 Control................................. 52511

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