2023 RAM CHASSIS CAB ECU

STARTING AND OPERATING127
DIESEL PARTICULATE FILTER (DPF)
M
ANUAL REGENERATION — IF EQUIPPED
On equipped Chassis Cabs, a manual regeneration
can be enable through the instrument cluster. The
manual regeneration will allow the DPF to
complete a regeneration, lowering the soot level
without having to drive the vehicle. The vehicle
must be in PARK to access this feature, and the
fuel level must be over 12.5% full. A message
displaying the time left on the regeneration will
appear on the instrument cluster, and the
instrument cluster will display the soot level
Ú page 89.
ENGINE BLOCK HEATER — IF EQUIPPED
The engine block heater warms the engine, and
permits quicker starts in cold weather. Connect the
cord to a standard 110-115 Volt AC electrical
outlet with a grounded, three-wire extension cord.
The engine block heater cord is routed behind the
front bumper and accessible through the right hole
of the air dam.
The engine block heater must be plugged in at
least one hour to have an adequate warming effect
on the engine. It includes a removable cap that is secured by a
tethered strap. It also has a c-clip that is used for
storage when not in use for the Winter months.
During Winter months, remove the heater cord
wiring assembly from itself on the c-clip.
NOTE:The block heater will require 110 Volt AC and
6.5 Amps to activate the heater element.
Block Heater Usage
For ambient temperatures below 0°F (-18°C),
engine block heater usage is recommended.
For ambient temperatures below –20°F (-29°C),
engine block heater usage is required.
ENGINE BREAK-IN RECOMMENDATIONS—
GASOLINE ENGINE
A long break-in period is not required for the engine
and drivetrain (transmission and axle) in your
vehicle.
Drive moderately during the first 300 miles
(500 km). After the initial 60 miles (100 km),
speeds up to 50 or 55 mph (80 or 90 km/h) are
desirable. While cruising, brief full-throttle acceleration within
the limits of local traffic laws contributes to a good
break-in. Wide-open throttle acceleration in low
gear can be detrimental and should be avoided.
The engine oil installed in the engine at the factory
is a high-quality energy conserving type lubricant.
Oil changes should be consistent with anticipated
climate conditions under which vehicle operations
will occur. For the recommended viscosity and
quality grades Ú
page 419.
NOTE:A new engine may consume some oil during its first
few thousand miles (kilometers) of operation. This
should be considered a normal part of the break-in
and not interpreted as a problem. Please check
your oil level with the engine oil indicator often
during the break in period. Add oil as required.
CAUTION!
Never use Non-Detergent Oil or Straight Mineral
Oil in the engine or damage may result.
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130STARTING AND OPERATING
(Continued)
(Continued)
NOTE:For optimum braking power it is recommended to
use the exhaust brake while in TOW/HAUL mode.
The exhaust brake feature can also be used to
reduce the engine warm-up time. To use the
exhaust brake as a warm-up device, the vehicle
must be stopped or moving less than 5 mph
(8 km/h), the Exhaust Brake Indicator must be on,
and the coolant temperature must be below
180°F (82°C) and ambient temperature below
60°F (16°C).
Automatic “Smart” Exhaust Brake
Automatic “Smart” Exhaust Brake technology
delivers smoother, less aggressive exhaust
braking characteristics during downhill descents.
Although it can apply full exhaust braking force if
needed, Automatic “Smart” Exhaust Brake may
not apply obvious braking if the vehicle speed is
not increasing. Automatic “Smart” Exhaust Brake
is intended to maintain vehicle speed, while Full
Exhaust Brake is intended to reduce vehicle speed. Automatic “Smart” Exhaust Brake can be enabled
by pushing the exhaust brake button (on the center
stack) again anytime after the normal Full Exhaust
Brake has been turned on. The Exhaust Brake
Indicator in the instrument cluster display will
change from Yellow to Green when Automatic
“Smart” Exhaust Brake is enabled. Pushing the
exhaust brake button again will toggle the exhaust
brake mode to off.
AUTOMATIC TRANSMISSION
You must press and hold the brake pedal while
shifting out of PARK.
CAUTION!
Use of aftermarket exhaust brakes is not
recommended and could lead to engine
damage.
WARNING!
It is dangerous to shift out of PARK or
NEUTRAL if the engine speed is higher than
idle speed. If your foot is not firmly pressing
the brake pedal, the vehicle could accelerate
quickly forward or in reverse. You could lose
control of the vehicle and hit someone or
something. Only shift into gear when the
engine is idling normally and your foot is firmly
pressing the brake pedal.
The transmission may not engage PARK if the
vehicle is moving. Always bring the vehicle to a
complete stop before shifting to PARK, and
verify that the transmission gear position indi
-
cator solidly indicates PARK (P) without
blinking. Ensure that the vehicle is completely
stopped, and the PARK position is properly
indicated, before exiting the vehicle.
Unintended movement of a vehicle could
injure those in or near the vehicle. As with all
vehicles, you should never exit a vehicle while
the engine is running. Before exiting a vehicle,
always come to a complete stop, then apply
the parking brake, shift the transmission into
PARK, turn the engine OFF, and remove the
key fob. When the ignition is in the LOCK/OFF
(key removal) position, (or, with Keyless Enter
‘n Go™, when the ignition is in the OFF posi -
tion) the transmission is locked in PARK,
securing the vehicle against unwanted move -
ment.
When leaving the vehicle, always make sure
the ignition is in the OFF position, remove the
key fob from the vehicle, and lock the vehicle.
WARNING!

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STARTING AND OPERATING181
Each axle GAWR is determined by the components
in the system with the lowest load carrying capacity
(axle, springs, tires or wheels). Heavier axles or
suspension components sometimes specified by
purchasers for increased durability does not
necessarily increase the vehicle's GVWR.
TIRE SIZE
The tire size on the Vehicle Certification Label
represents the actual tire size on your vehicle.
Replacement tires must be equal to the load
capacity of this tire size.
RIM SIZE
This is the rim size that is appropriate for the tire
size listed.
INFLATION PRESSURE
This is the cold tire inflation pressure for your
vehicle for all loading conditions up to full GAWR.
CURB WEIGHT
The curb weight of a vehicle is defined as the total
weight of the vehicle with all fluids, including
vehicle fuel, at full capacity conditions, and with no
occupants or cargo loaded into the vehicle. The
front and rear curb weight values are determined
by weighing your vehicle on a commercial scale
before any occupants or cargo are added.
LOADING
The actual total weight and the weight of the front
and rear of your vehicle at the ground can best be
determined by weighing it when it is loaded and
ready for operation.

The entire vehicle should first be weighed on a
commercial scale to ensure that the GVWR has not
been exceeded. The weight on the front and rear of the
vehicle should then be determined separately to be
sure that the load is properly distributed over the front
and rear axles. Weighing the vehicle may show that the
GAWR of either the front or rear axle has been
exceeded but the total load is within the specified
GVWR. If so, weight must be shifted from front to rear
or rear to front as appropriate until the specified weight
limitations are met. Store the heavier items down low
and be sure that the weight is distributed equally. Stow
all loose items securely before driving.

Improper weight distributions can have an adverse
effect on the way your vehicle steers and handles
and the way the brakes operate.
TRAILER TOWING
In this section you will find safety tips and
information on limits to the type of towing you can
reasonably do with your vehicle. Before towing a
trailer, carefully review this information to tow your
load as efficiently and safely as possible.
To maintain the New Vehicle Limited Warranty
coverage, follow the requirements and
recommendations in this manual concerning
vehicles used for trailer towing.
COMMON TOWING DEFINITIONS
The following trailer towing related definitions will
assist you in understanding the following
information:
Gross Vehicle Weight Rating (GVWR)
The GVWR is the total allowable weight of your
vehicle. This includes driver, passengers, cargo
and tongue weight. The total load must be limited
so that you do not exceed the GVWR Ú page 180.
Gross Trailer Weight (GTW)
The GTW is the weight of the trailer plus the weight
of all cargo, consumables and equipment
(permanent or temporary) loaded in or on the
trailer in its "loaded and ready for operation"
condition.WARNING!
Do not load your vehicle any heavier than the
GVWR, maximum Payload or maximum front and
rear GAWR. If you do, parts on your vehicle can
break, or it can change the way your vehicle
handles. This could cause you to lose control.
Overloading can shorten the life of your vehicle.
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186STARTING AND OPERATING
(Continued)
TRAILER TOWING WEIGHTS (MAXIMUM
T
RAILER WEIGHT RATINGS)
NOTE:For trailer towing information (maximum trailer
weight ratings) refer to the following website
addresses:
ramtrucks.com/en/towing_guide/
ramtruck.ca (Canada)
rambodybuilder.com
TRAILER AND TONGUE WEIGHT
Never exceed the maximum tongue weight
stamped on your bumper or trailer hitch.

Weight Distribution
Consider the following items when computing the
weight on the rear axle of the vehicle:The tongue weight of the trailer.
The weight of any other type of cargo or equip
-
ment put in or on your vehicle.
The weight of the driver and all passengers.
NOTE:Remember that everything put into or on the trailer
adds to the load on your vehicle. Also, additional
factory-installed options or dealer-installed options
must be considered as part of the total load on
your vehicle. For the maximum combined weight of
occupants and cargo for your vehicle Úpage 394.
TOWING REQUIREMENTS
To promote proper break-in of your new vehicle
drivetrain components, the following guidelines
are recommended.
Perform the maintenance listed in the “Scheduled
Servicing” Ú page 342. When towing a trailer,
never exceed the GAWR or GCWR ratings.
WARNING!
Always load a trailer with 60% of the weight in
the front of the trailer. This places 10% of the
GTW on the tow hitch of your vehicle. Loads
balanced over the wheels or heavier in the rear
can cause the trailer to sway severely side to
side which will cause loss of control of the
vehicle and trailer. Failure to load trailers heavier
in front is the cause of many trailer collisions.
CAUTION!
Do not tow a trailer at all during the first
500 miles (805 km) the new vehicle is driven.
The engine, axle or other parts could be
damaged.
Then, during the first 500 miles (805 km) that
a trailer is towed, do not drive over 50 mph
(80 km/h) and do not make starts at full
throttle. This helps the engine and other parts
of the vehicle wear in at the heavier loads.
WARNING!
Make certain that the load is secured in the
trailer and will not shift during travel. When
trailering cargo that is not fully secured,
dynamic load shifts can occur that may be
difficult for the driver to control. You could lose
control of your vehicle and have a collision.

23_DPF_OM_EN_USC_t.book Page 186

STARTING AND OPERATING195
(Continued)
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.
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.
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.
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!
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199
MULTIMEDIA
UCONNECT SYSTEMS
For detailed information about your Uconnect 5/
5 NAV With 8.4-inch Display system or your
Uconnect 5 NAV With 12-inch Display system, refer
to your Uconnect Owner’s Manual Supplement.
NOTE:Uconnect screen images are for illustration
purposes only and may not reflect exact software
for your vehicle.
CYBERSECURITY
Depending on applicability, your vehicle may be
able to send or receive information from a wired or
wireless network. This information allows systems
and features in your vehicle to function properly.
Your vehicle may be equipped with certain security
features to reduce the risk of unauthorized and
unlawful access to vehicle systems and wireless
communications. Vehicle software technology
continues to evolve over time and FCA US LLC,
working with its suppliers, evaluates and takes
appropriate steps as needed. As always, if you
experience unusual behavior, contact an
authorized dealer immediately, Úpage 422, or
refer to your Uconnect Owner’s Manual
Supplement for additional contact information. The risk of unauthorized and unlawful access to
your vehicle systems may still exist, even if the
most recent version of vehicle software (such as
Uconnect software) is installed.
NOTE:To help further improve user experience, features,
stability, etc., and minimize the potential risk of a
security breach, vehicle owners should routinely
check
www.driveuconnect.com (US Residents) or www.driveuconnect.ca (Canadian Residents) to
learn about available Uconnect software updates.
UCONNECT SETTINGS
The Uconnect system uses a combination of
buttons on the touchscreen and buttons on the
faceplate located on the center of the instrument
panel. These buttons allow you to access and
change the Customer Programmable Features.
Many features can vary by vehicle.
Buttons on the faceplate are located below and/or
beside the Uconnect system in the center of the
instrument panel. In addition, there is a SCROLL/
ENTER control knob located on the right side. Turn
the control knob to scroll through menus and
change settings. Push the center of the control
knob one or more times to select or change a
setting.
Your Uconnect system may also have SCREEN OFF
and MUTE buttons on the faceplate.
Push the SCREEN OFF button on the faceplate to
turn off the Uconnect screen. Push the button
again or tap the screen to turn the screen on.
Press the Back Arrow button to exit out of a Menu
or certain option on the Uconnect system.
For the Uconnect 5 systems, push and hold the
Power button on the radio’s faceplate for a
minimum of 15 seconds to reset the radio.
WARNING!
ONLY insert trusted media devices/compo -
nents into your vehicle. Media of unknown
origin could possibly contain malicious soft -
ware, and if installed in your vehicle, it may
increase the possibility for vehicle systems to
be breached.
As always, if you experience unusual vehicle
behavior, contact an authorized dealer imme -
diately.
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MULTIMEDIA223
SAFETY AND GENERAL INFORMATION
Safety Guidelines
Please read this manual carefully before using the
system. It contains instructions on how to use the
system in a safe and effective manner.
Do NOT attach any object to the touchscreen.
Doing so can result in damage to the touchscreen.
Please read and follow these safety precautions.
Failure to do so may result in injury or property
damage.
Become familiar with the Uconnect features and
applications in this vehicle before you drive on
the roadway so using Uconnect will be more
intuitive and will not require prolonged viewing
of the screen while you are driving.
When driving, looking at the touchscreen should
only be done by a glance when safe to do so. If
prolonged viewing of the screen is required,
choose a safe and secure location where you
can pull over and park safely to do so.
Stop use immediately if a problem occurs.
Failure to do so may cause injury or damage to
the product. See an authorized dealer for repair.
Ensure the volume level of the system is set to a
level that still allows you to hear outside traffic
and emergency vehicles.
Safe Usage Of The Uconnect System
The Uconnect system is a sophisticated elec -
tronic device. Do not let young children use the
system.
Permanent hearing loss may occur if you play
your music or sound system at loud volumes.
Exercise caution when setting the volume on the
system.
Keep drinks, rain and other sources of moisture
away from the system. Besides damage to the
system, moisture can cause electric shocks as
with any electronic device.
NOTE:Many features of this system are speed
dependent. For your own safety, it is not possible to
use some of the touchscreen features while the
vehicle is in motion.
Care And Maintenance
Do not press the touchscreen with any hard or
sharp objects (pen, USB stick, jewelry, etc.),
which could scratch the surface.
Do not spray any liquid or chemicals directly on
the screen! Use a clean and dry microfiber lens
cleaning cloth in order to clean the touchscreen.
If necessary, use a lint-free cloth dampened
with a cleaning solution, such as isopropyl
alcohol or an isopropyl alcohol and water solu -
tion ratio of 50:50. Be sure to follow the solvent
manufacturer's precautions and directions
Ú page 427.
WARNING!
ALWAYS obey traffic laws and pay attention to
the road. Your complete attention is always
required while driving to maintain safe control of
your vehicle. Only use and interact with the
features and applications when it is safe to do
so. Failure to follow these warnings can result in
a collision and death or serious personal injury.
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MULTIMEDIA247
Edit/Edit Profile:
To manage the details of your SiriusXM
Guardian™ account, such as your contact infor -
mation, password and SiriusXM Guardian™ PIN,
click on the Edit/Edit Profile button to access
the details of your account.
Connected Services Status:
This statement will indicate your SiriusXM
Guardian™-equipped vehicle.
Remote Commands:
For vehicles with an active SiriusXM Guardian™
subscription, press one of these icons and enter
your four-digit SiriusXM Guardian™ Security PIN
to remotely start (if equipped), lock/unlock
doors or sound the horn and flash the lights.
Editing Your Notifications
Notifications are an important element of your
SiriusXM Guardian™ account. For example, any
time you use your remote services (such as
Remote Door Unlock), you can elect to receive a
text message, push notification, and/or E-mail to
notify you of the event. To set up the notifications,
please follow these instructions.
1. Log on to your Owner’s Account at

https://
www.mopar.com/en-us.html (US Residents)
and select “Dashboard”, or www.mopar.ca

(Canadian Residents), select “My Vehicle”
and then “Dashboard”.

2. Click the Edit/Edit Profile button.
3. Once there, select “SiriusXM Guardian™” where you can edit Notification Preferences.
4. You can enter a mobile phone and/or email address to notify you, and you can customize
the types of messages.
USING SIRIUSXM GUARDIAN™
SOS Call — If Equipped
Access To Emergency Services At The Push Of A
Button
SiriusXM Guardian™ In-Vehicle Assistance
Features
With SiriusXM Guardian™, your vehicle has
onboard assistance features located on the
rearview mirror or overhead console designed to
enhance your driving experience if you should ever
need assistance or support.
Description
SOS Call offers a convenient way to get in contact
with a SiriusXM Guardian™ Customer Care agent
in the event of an emergency. When the
connection between the vehicle and the live agent
is made, your vehicle will automatically transmit
location information. In the event of a minor
collision, medical or any other emergency, press
the SOS button to be connected to a call center
agent who can send emergency assistance to your
vehicle’s location.
WARNING!
Some SiriusXM Guardian™ connected services,
including SOS Call and Roadside Assistance
Call, will NOT work without a network connection
compatible with your device.
Center Light Status Description
Off No call activated
Green Active call in progress Red System error
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