automatic transmission fluid RAM CHASSIS CAB 2022 Owners Manual

4
ONBOARD DIAGNOSTIC SYSTEM — OBD II ...... 103 Onboard Diagnostic System (OBD II)
Cybersecurity ................................................. 103
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS .......................................................... 104
STARTING AND OPERATING
STARTING THE ENGINE— GASOLINE ENGINE .. 105
Automatic Transmission ............................... 105
AutoPark — Rotary Shifter and 8-Speed
Transmission Only ......................................... 105
Tip Start Feature ........................................... 107Keyless Enter ‘n Go™ — Ignition................... 107
Normal Starting Using ENGINE START/
STOP Button .................................................. 107
Cold Weather Operation (Below –22°F Or
−30°C) .......................................................... 108
After Starting.................................................. 108
STARTING THE ENGINE — DIESEL ENGINE....... 108
Automatic Transmission ............................... 109
Keyless Enter ‘n Go™ — Ignition................... 109
Extreme Cold Weather .................................. 110
Normal Starting Procedure — Engine
Manifold Air Temperature Above 66°F (19°C) ..
111
Starting Procedure — Engine Manifold Air
Temperature 0°F To 66°F (–18°C to
19°C) ............................................................. 111
Starting Procedure — Engine Manifold Air
Temperature Below 0°F (-18°C) ................. 112Starting Fluids ............................................... 113 NORMAL OPERATION — DIESEL ENGINE ......... 113
Cold Weather Precautions ............................ 114
Engine Idling ................................................. 115
Noise .............................................................. 116
Stopping The Engine ..................................... 116
Idle Shutdown................................................ 117Programmable Maximum Vehicle Speed .... 117
Operating Precautions .................................. 117
Cooling System Tips ...................................... 117
Diesel Particulate Filter (DPF) Manual
Regeneration — If Equipped ......................... 118
ENGINE BLOCK HEATER — IF EQUIPPED ......... 118
ENGINE BREAK-IN RECOMMENDATIONS —
GASOLINE ENGINE ............................................. 118
ENGINE BREAK-IN RECOMMENDATIONS —
DIESEL ENGINE.................................................... 119
PARKING BRAKE ................................................ 119
DIESEL EXHAUST BRAKE (ENGINE
BRAKING) ............................................................ 120
AUTOMATIC TRANSMISSION ............................. 121 Ignition Park Interlock ................................... 122Brake/Transmission Shift Interlock (BTSI)
System .......................................................... 1228-Speed Automatic Transmission —
If Equipped .................................................... 122
6-Speed Automatic Transmission —
If Equipped .................................................... 126
AUXILIARY SWITCHES — IF EQUIPPED............. 131 FOUR-WHEEL DRIVE OPERATION —
IF EQUIPPED ........................................................ 132
Electronically Shifted Transfer Case
(8-Speed Transmission) — If Equipped ....... 132
Electronically Shifted Transfer Case
(6-Speed Transmission) — If Equipped ........ 135Manually Shifted Transfer Case —
If Equipped .................................................... 138
LIMITED-SLIP DIFFERENTIAL ............................ 139
POWER TAKE OFF (PTO) OPERATION —
IF EQUIPPED ........................................................ 140
HYDRAULIC POWER STEERING ......................... 140
Power Steering Fluid Check ......................... 140
CRUISE CONTROL SYSTEMS —
IF EQUIPPED ........................................................ 141
Cruise Control ............................................... 141Adaptive Cruise Control (ACC) ...................... 143
PARKSENSE FRONT/REAR PARK ASSIST —
IF EQUIPPED ......................................................... 151
ParkSense Sensors ....................................... 152
ParkSense Warning Display ......................... 152
ParkSense Display ........................................ 152
Enabling And Disabling ParkSense.............. 155
Service The ParkSense Park Assist
System ........................................................... 155
Cleaning The ParkSense System ................. 155
ParkSense System Usage Precautions........ 155

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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

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GETTING TO KNOW YOUR INSTRUMENT PANEL97
Electric Power Steering (EPS) Fault
Warning Light
This warning light will turn on when
there's a fault with the EPS system
Úpage 140.
Trailer Brake Disconnected Warning Light
This warning light will illuminate when the
Trailer Brake has been disconnected
Úpage 173.
Transmission Temperature Warning
Light — If Equipped
This warning light will illuminate to warn
of a high transmission fluid temperature.
This may occur with strenuous usage
such as trailer towing. If this light turns
on, stop the vehicle and run the engine at idle or
slightly faster, with the transmission in PARK or
NEUTRAL, until the light turns off. Once the light
turns off, you may continue to drive normally.
Door Open Warning Light
This indicator will illuminate when a door
is ajar/open and not fully closed.
NOTE:If the vehicle is moving there will also be a single
chime.
YELLOW WARNING LIGHTS
Adaptive Cruise Control (ACC) Fault
Warning Light — If Equipped
This warning light will illuminate to
indicate a fault in the ACC system.
Contact a local authorized dealer for
service Ú page 143.
Engine Check/Malfunction Indicator
Warning Light (MIL)
The Engine Check/Malfunction Indicator
Light (MIL) is a part of an Onboard
Diagnostic System called OBD II that
monitors engine and automatic
transmission control systems. This warning light
will illuminate when the ignition is in the ON/RUN
position before engine start. If the bulb does not
come on when turning the ignition switch from OFF
to ON/RUN, have the condition checked promptly.
Certain conditions, such as a loose or missing gas
cap, poor quality fuel, etc., may illuminate the light
after engine start. The vehicle should be serviced if
the light stays on through several typical driving
styles. In most situations, the vehicle will drive
normally and will not require towing.
WARNING!
Continued operation with reduced assist could
pose a safety risk to yourself and others. Service
should be obtained as soon as possible.
WARNING!
If you continue operating the vehicle when the
Transmission Temperature Warning Light is
illuminated you could cause the fluid to boil over,
come in contact with hot engine or exhaust
components and cause a fire.
CAUTION!
Continuous driving with the Transmission
Temperature Warning Light illuminated will
eventually cause severe transmission damage
or transmission failure.
3

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130STARTING AND OPERATING
Electronic Range Select (ERS) Operation
The ERS shift control allows the driver to limit the
highest available gear when the transmission is in
DRIVE. For example, if you set the transmission
gear limit to FOURTH gear, the transmission will
not shift above FOURTH gear, but will shift through
the lower gears normally.
You can switch between DRIVE and ERS mode at
any vehicle speed. When the gear selector is in the
DRIVE position, the transmission will operate
automatically, shifting between all available gears.
Tapping the ERS “-” switch will activate ERS mode,
display the current gear in the instrument cluster,
and set that gear as the top available gear. Once in
ERS mode, tapping “-” or “+” will change the top
available gear.
Electronic Range Select

To exit ERS mode, simply push and hold the
ERS “+” switch until the gear limit display
disappears from the instrument cluster.
NOTE:To select the proper gear position for maximum
deceleration (engine braking), simply push and
hold the ERS “-” switch. The transmission will shift
to the range from which the vehicle can best be
slowed down.
Overdrive Operation
The automatic transmission includes an
electronically controlled Overdrive (FIFTH and
SIXTH gears). The transmission will automatically
shift into Overdrive if the following conditions are
present:
The gear selector is in the DRIVE position.
The transmission fluid has reached an
adequate temperature.
The engine coolant has reached an adequate
temperature.
Vehicle speed is sufficiently high.
The TOW/HAUL switch has not been activated.
The driver is not heavily pressing the acceler -
ator.
1 — GEAR “+” Switch
2 — GEAR “–” Switch
WARNING!
Do not downshift for additional engine braking
on a slippery surface. The drive wheels could
lose their grip and the vehicle could skid,
causing a collision or personal injury.
CAUTION!
When using ERS for engine braking while
descending steep grades, be careful not to
overspeed the engine. Apply the brakes as
needed to prevent engine overspeed.

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STARTING AND OPERATING131
When To Use TOW/HAUL Mode
When driving in hilly areas, towing a trailer, carrying
a heavy load, etc., and frequent transmission
shifting occurs, push the TOW/HAUL switch to
activate TOW/HAUL mode. This will improve
performance and reduce the potential for
transmission overheating or failure due to
excessive shifting. When operating in TOW/HAUL
mode, transmission upshifts are delayed, and the
transmission will automatically downshift (for
engine braking) when the throttle is closed and/or
during steady braking maneuvers.

TOW/HAUL Switch

The TOW/HAUL Indicator Light will illuminate in the
instrument cluster to indicate that TOW/HAUL
mode has been activated. Pushing the switch a
second time restores normal operation. Normal operation is always the default at engine start-up.
If TOW/HAUL mode is desired, the switch must be
pushed each time the engine is started.
Torque Converter Clutch
A feature designed to improve fuel economy has
been included in the automatic transmission on
your vehicle. A clutch within the torque converter
engages automatically at calibrated speeds. This
may result in a slightly different feeling or response
during normal operation in the upper gears. When
the vehicle speed drops or during some
accelerations, the clutch automatically
disengages.
NOTE:
The torque converter clutch will not engage,
until the transmission fluid and engine coolant
are warm (usually after 1 to 3 miles (2 to 5 km)
of driving). Because engine speed is higher
when the torque converter clutch is not engaged, it may seem as if the transmission is
not shifting properly when cold; this is normal.
Using the Electronic Range Select (ERS) shift
control, when the transmission is sufficiently
warm, will demonstrate that the transmission is
able to shift into and out of Overdrive.
If the vehicle has not been driven for several
days, the first few seconds of operation after
shifting the transmission into gear may seem
sluggish. This is due to the fluid partially
draining from the torque converter into the
transmission. This condition is normal and will
not cause damage to the transmission. The
torque converter will refill within five seconds
after starting the engine.
AUXILIARY SWITCHES — IF EQUIPPED
There can be up to six auxiliary switches located in
the lower switch bank of the instrument panel
which can be used to power various electronic
devices and Power Take Off (PTO). If equipped, it
will take the place of the sixth auxiliary switch.
Connections to the switches are found under the
hood in the connectors attached to the auxiliary
Power Distribution Center.
You have the ability to configure the functionality of
the auxiliary switches via the instrument cluster
display. All switches can now be configured for
setting the switch type operation to latching or
WARNING!
Do not use the TOW/HAUL feature when driving
in icy or slippery conditions. The increased
engine braking can cause the rear wheels to
slide, and the vehicle to swing around with the
possible loss of vehicle control, which may
cause an accident possibly resulting in personal
injury or death.
4

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140STARTING AND OPERATING
Care should be taken to avoid sudden
accelerations when both rear wheels are on a
slippery surface. This could cause both rear wheels
to spin, and allow the vehicle to slide sideways on
the crowned surface of a road or in a turn.
POWER TAKE OFF (PTO) OPERATION —
IF EQUIPPED
This vehicle when equipped with PTO Prep and the
AS66RC/AS69RC automatic 6-speed, will allow for
an aftermarket upfit with a transmission driven
PTO (power take off). The customer will have the
ability to operate the PTO in either a “stationary”,
“mobile” or “remote” mode. The vehicles will be
factory set to the “stationary” mode. To select a
different mode, or to change any other PTO setting,
you will need to enter the commercial vehicle
menu on the instrument cluster screen. Details of
the PTO selection modes and further PTO information is available at the Ram Truck Body
Builder’s web site: https://www.ramtrucks.com/
ram-commercial/body-builders-guide.html
HYDRAULIC POWER STEERING
The standard power steering system provides
increased vehicle response and ease of
maneuverability in tight spaces. The system will
provide mechanical steering capability if power
assist is lost.
If for some reason the power assist is interrupted,
it will still be possible to steer your vehicle. Under
these conditions, you will observe a substantial
increase in steering effort, especially at very low
vehicle speeds and during parking maneuvers.
NOTE:
Increased noise levels at the end of the steering
wheel travel are considered normal and do not
indicate that there is a problem with the power
steering system.
Upon initial start-up in cold weather, the power
steering pump may make noise for a short
amount of time. This is due to the cold, thick
fluid in the steering system. This noise should
be considered normal, and it does not in any
way damage the steering system.
POWER STEERING FLUID CHECK
Checking the power steering fluid level at a defined
service interval is not required. The fluid should
only be checked if a leak is suspected, abnormal
noises are apparent, and/or the system is not
functioning as anticipated. Check fluid level when
the engine is cold and off. Coordinate inspection
efforts through an authorized dealer.
WARNING!
On vehicles equipped with a limited-slip
differential never run the engine with one rear
wheel off the ground since the vehicle may drive
through the rear wheel remaining on the ground.
You could lose control of the vehicle.
CAUTION!
Prolonged operation of the steering system at
the end of the steering wheel travel will increase
the steering fluid temperature and it should be
avoided when possible. Damage to the power
steering pump may occur.
WARNING!
Fluid level should be checked on a level surface
and with the engine off to prevent injury from
moving parts and to ensure accurate fluid level
reading. Do not overfill. Use only manufacturer's
recommended power steering fluid.

22_DPF_OM_EN_USC_t.book Page 140

STARTING AND OPERATING183
If you regularly tow a trailer for more than
45 minutes of continuous operation, then change
the automatic transmission fluid and filter(s) as
specified for "police, taxi, fleet, or frequent trailer
towing." Ú page 329.
NOTE:Check the automatic transmission fluid level
before towing (6-speed automatic only).
Tow/Haul Mode
To reduce potential for automatic transmission
overheating, activate TOW/HAUL mode when
driving in hilly areas, or select a lower gear range
(using the Electronic Range Select (ERS) shift
control) on more severe grades.
Cruise Control — If Equipped
Do not use on hilly terrain or with heavy loads.
When using the Cruise Control, if you experience
speed drops greater than 10 mph (16 km/h),
disengage until you can get back to cruising
speed.
Use Cruise Control in flat terrain and with light
loads to maximize fuel efficiency.
SNOWPLOW — IF EQUIPPED
Snowplow Prep Packages are available as a factory
installed option. These packages include
components necessary to equip your vehicle with a
snowplow.
NOTE:Before installation of a snowplow it is highly recom -
mended that the owner/installer obtain and follow
the recommendations contained within the current
Body Builder’s Guide. See an authorized dealer,
installer or snowplow manufacturer for this infor -
mation. There are unique electrical systems that
must be connected to properly ensure operator
safety and prevent overloading vehicle systems.
BEFORE PLOWING
Check the hydraulic system for leaks and proper
fluid level.
Check the mounting bolts and nuts for proper
tightness.
Check the runners and cutting edge for exces -
sive wear. The cutting edge should be ¼ to
½ inches (6 cm to 1.2 cm) above ground in
snow plowing position.
Check that snowplow lighting is connected and
functioning properly.
SNOWPLOW PREP PACKAGE MODEL
A
VAILABILITY
For Information about snowplow applications visit
www.ramtrucks.com or refer to the current Body
Builder’s Guide.

1. The maximum number of occupants in the
truck should not exceed two.

2. The total GVWR or the Front GAWR or the Rear GAWR should never be exceeded.
3. Cargo capacity will be reduced by the addition of options or passengers, etc.WARNING!
Attaching a snowplow to this vehicle could
adversely affect performance of the airbag
system in a collision. Do not expect that the
airbag will perform as described earlier in this
manual.
CAUTION!
The “Lamp Out” indicator could illuminate if
exterior lamps are not properly installed.
4

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STARTING AND OPERATING185
RECREATIONAL TOWING (BEHIND MOTORHOME)
TOWING THIS VEHICLE BEHIND ANOTHER VEHICLE
NOTE:When towing your vehicle, always follow applicable
state and provincial laws. Contact state and
provincial Highway Safety offices for additional
details.
RECREATIONAL TOWING — TWO-WHEEL
D
RIVE MODELS
DO NOT flat tow this vehicle. Damage to the
drivetrain will result.
Recreational towing (for two-wheel drive models) is
allowed ONLY if the rear wheels are OFF the
ground. This may be accomplished using a tow dolly or vehicle trailer. If using a tow dolly, follow
this procedure:

1. Properly secure the dolly to the tow vehicle,
following the dolly manufacturer's
instructions.

2. Drive the rear wheels onto the tow dolly.
3. Firmly apply the parking brake. Place automatic transmission in PARK.
4. Properly secure the rear wheels to the dolly, following the dolly manufacturer's instructions.
5. Turn the ignition to the OFF position and remove the key fob. 6. Install a suitable clamping device, designed for
towing, to secure the front wheels in the
straight position.
Towing Condition Wheels OFF The Ground Two-Wheel Drive ModelsFour-Wheel Drive Models
Flat Tow NONENOT ALLOWED See InstructionsAutomatic transmission in PARK
Transfer case in N (Neutral)
Tow in forward direction
Dolly Tow Front
NOT ALLOWED NOT ALLOWED
Rear OKNOT ALLOWED
On Trailer ALLOKOK
CAUTION!
Towing with the rear wheels on the ground will
cause severe transmission damage. Damage
from improper towing is not covered under the
New Vehicle Limited Warranty.
Do not disconnect the driveshaft because
fluid may leak from the transmission, causing
damage to internal parts.
4

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186STARTING AND OPERATING
(Continued)
RECREATIONAL TOWING —
F
OUR-WHEEL DRIVE MODELS
NOTE:Both the manual shift and electronically shifted
transfer cases must be shifted into N (Neutral) for
recreational towing. Automatic transmissions must
be shifted into PARK for recreational towing. Refer
to the following for the proper transfer case N
(Neutral) shifting procedure for your vehicle.
Shifting Into N (Neutral)
Use the following procedure to prepare your
vehicle for recreational towing.

1. Bring the vehicle to a complete stop on level
ground, with the engine running. Firmly apply
the parking brake.

2. Shift the transmission to NEUTRAL.
3. Press and hold the brake pedal.
CAUTION!
DO NOT dolly tow any four-wheel drive vehicle.
Towing with only one set of wheels on the
ground (front or rear) will cause severe trans -
mission and/or transfer case damage. Tow
with all four wheels either ON the ground, or
OFF the ground (using a vehicle trailer).
Tow only in the forward direction. Towing this
vehicle backwards can cause severe damage
to the transfer case.
Before recreational towing, the transfer case
must be in N (Neutral). To be certain the
transfer case is fully in N (Neutral), perform
the procedure outlined under “Shifting Into N
(Neutral)”. Internal transmission damage will
result, if the transfer case is not in N (Neutral)
during towing.
The transmission must be placed in PARK for
recreational towing.
Towing this vehicle in violation of the above
requirements can cause severe transmission
and/or transfer case damage. Damage from
improper towing is not covered under the New
Vehicle Limited Warranty.
Do not disconnect the rear driveshaft because
fluid will leak from the transfer case, causing
damage to internal parts.
Do not use a bumper-mounted clamp-on tow
bar on your vehicle. The bumper face bar will
be damaged.
CAUTION!
WARNING!
You or others could be injured or killed if you
leave the vehicle unattended with the transfer
case in the N (Neutral) position without first fully
engaging the parking brake. The transfer case N
(Neutral) position disengages both the front and
rear driveshafts from the powertrain, and will
allow the vehicle to roll, even if the automatic
transmission is in PARK. The parking brake
should always be applied when the driver is not
in the vehicle.
CAUTION!
It is necessary to follow these steps to be certain
that the transfer case is fully in N (Neutral)
before recreational towing to prevent damage to
internal parts.

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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.

22_DPF_OM_EN_USC_t.book Page 328