run flat RAM CHASSIS CAB 2023 Owners Manual

The driver’s primary responsibility is the safe operation of the vehicle. Driving while distracted can result in loss of vehicle control, resulting in an accident and personal injury. FCA US LLC strongly recommends that the driver use extreme caution when using any device or feature that may take their attention off the road. Use of any electrical devices, such as cellular telephones, computers, portable radios, vehicle navigation or other devices, by the driver while the vehicle is moving is dangerous and could lead to a serious accident. Texting while driving is also dangerous and should never be done while the vehicle is moving. If you find yourself unable to devote your full attention to vehicle operation, pull off the road to a safe location and stop your vehicle. Some states or provinces prohibit the use of cellular telephones or texting while driving. It is always the driver’s responsibility to comply with all local laws.
This Owner’s Manual has been prepared to help you get acquainted with your new Ram brand vehicle and to provide a convenient reference for common questions.
Not all features shown in this manual may apply to your vehicle. For additional information on accessories to help personalize your vehicle, visit mopar.com/om (USA), owners.mopar.ca (Canada) or your local Ram brand dealer.
This Owner’s Manual is intended to familiarize you with the important features of your vehicle. Your most up-to-date Owner’s Manual, Navigation/Uconnect manuals and Warranty Booklet can be found by visiting the website on the back cover.
U.S. Residents: If you are the first registered retail owner of your vehicle, you may obtain a complimentary printed copy of the Warranty Booklet by calling 1-866-726-4636 or by contacting your dealer. Replacement kits can be purchased by visiting www.techauthority.com.
Canadian Residents: If you are the first registered retail owner of your vehicle, you may obtain a complimentary printed copy of the Warranty Booklet or purchase a replacement kit by calling 1-800-387-1143 or by contacting your dealer.
DRIVING AND ALCOHOL
Drunk driving is one of the most frequent causes of accidents. Your driving ability can be seriously impaired with blood alcohol levels far below the legal minimum. If you are drinking, don’t drive. Ride with a designated non-drinking driver, call a cab, a friend or use public transportation.
WARNING
Driving after drinking can lead to an accident. Your perceptions are less sharp, your reflexes are slower and your judgment is impaired when you have been drinking. Never drink and then drive.
WARNING: Operating, servicing and maintaining a passenger vehicle or off-highway
motor vehicle can expose you to chemicals including engine exhaust, carbon monoxide, phthalates,
and lead, which are known to the State of California to cause cancer and birth defects or other
reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except
as necessary, service your vehicle in a well-ventilated area and wear gloves or wash your hands frequently
when servicing your vehicle. For more information go to www.P65Warnings.ca.gov/passenger-vehicle.
This Owner’s Manual illustrates and describes the operation of features and equipment that are either standard or optional on this vehicle. This manual may also include a description of features and equipment that are no longer available or were not ordered on this vehicle. Please disregard any features and equipment described in this manual that are not on this vehicle. FCA US LLC reserves the right to make changes in design and specifications, and/or make additions to or improvements to its products without imposing any obligation upon itself to install them on products previously manufactured.
With respect to any vehicles sold in Canada, the name FCA US LLC shall be deemed to be deleted and the name FCA Canada Inc. used in substitution therefore.
FCA US LLC reserves the right to modify the terms or discontinue the Roadside Assistance Program at any time. The Roadside Assistance Program is subject to restrictions and conditions of use, that are determined solely by FCA US LLC.
ROADSIDE ASSISTANCE 24 HOURS, 7 DAYS A WEEK AT YOUR SERVICE. CALL 1-800-521-2779 OR VISIT CHRYSLER.RSAHELP.COM (USA) CALL 1-800-363-4869 OR VISIT FCA.ROADSIDEAID.COM (CANADA) SERVICES: Flat Tire Service, Out Of Gas/Fuel Delivery, Battery Jump Assistance, Lockout Service and Towing Service
Please see the Customer Assistance chapter in this Owner’s Manual for further information.

5
ENGINE BREAK-IN RECOMMENDATIONS —
DIESEL ENGINE .................................................... 128
PARKING BRAKE ................................................ 128

DIESEL EXHAUST BRAKE (ENGINE BRAKING) .. 129
AUTOMATIC TRANSMISSION.............................. 130 Ignition Park Interlock ................................... 131Brake/Transmission Shift Interlock (BTSI)
System .......................................................... 131
8-Speed Automatic Transmission —
If Equipped .................................................... 132
6-Speed Automatic Transmission —
If Equipped .................................................... 135
AUXILIARY SWITCHES — IF EQUIPPED ............. 139
FOUR-WHEEL DRIVE OPERATION —
IF EQUIPPED ........................................................ 140
Electronically Shifted Transfer Case
(8-Speed Transmission) — If Equipped ....... 140Electronically Shifted Transfer Case
(6-Speed Transmission) —
If Equipped..................................................... 143
Manually Shifted Transfer Case —
If Equipped..................................................... 145
LIMITED-SLIP DIFFERENTIAL ............................ 147
POWER TAKE OFF (PTO) OPERATION —
IF EQUIPPED ........................................................ 147
HYDRAULIC POWER STEERING .........................148
Power Steering Fluid Check .......................... 148

CRUISE CONTROL SYSTEMS — IF EQUIPPED .... 148

Cruise Control ............................................... 149
Adaptive Cruise Control (ACC) ...................... 150 PARKSENSE FRONT/REAR PARK ASSIST —
IF EQUIPPED ....................................................... 159
ParkSense Sensors ....................................... 159
ParkSense Warning Display ......................... 159
ParkSense Display ........................................ 159Enabling And Disabling ParkSense .............. 162
Service The ParkSense Park Assist System ...162

Cleaning The ParkSense System ................. 162
ParkSense System Usage Precautions........ 162
LANESENSE — IF EQUIPPED ............................. 163
LaneSense Operation ................................... 163Turning LaneSense On Or Off ....................... 164
LaneSense Warning Message ...................... 164Changing LaneSense Status ........................ 166
Turn Signal Activated Blind Spot Assist —
If Equipped..................................................... 166
PARKVIEW REAR BACK UP CAMERA............... 166
SURROUND VIEW CAMERA SYSTEM —
IF EQUIPPED ........................................................ 168
TRAILER CAMERAS — IF EQUIPPED ................. 173 Trailer Surround View Camera System —
If Equipped..................................................... 173AUX Camera — If Equipped ........................... 176
ENGINE RUNAWAY ............................................. 176
REFUELING THE VEHICLE—
GASOLINE ENGINE ............................................. 177
Loose Fuel Filler Cap Message ................... 177
REFUELING THE VEHICLE — DIESEL ENGINE... 177
Diesel Exhaust Fluid...................................... 178 VEHICLE LOADING .............................................. 180
Gross Vehicle Weight Rating (GVWR) ......... 180
Payload .......................................................... 180Gross Axle Weight Rating (GAWR)................ 180Tire Size ......................................................... 181
Rim Size ......................................................... 181
Inflation Pressure .......................................... 181Curb Weight ................................................... 181
Loading .......................................................... 181
TRAILER TOWING ................................................ 181
Common Towing Definitions......................... 181
Trailer Hitch Type and Maximum Trailer
Weight ............................................................ 185
Trailer Towing Weights (Maximum Traile
r Weight Ratings) .......................................... 186Trailer And Tongue Weight .......................... 186
Towing Requirements .................................. 186Towing Tips ................................................... 192
SNOWPLOW — IF EQUIPPED.............................. 192
Before Plowing .............................................. 192

Snowplow Prep Package Model Availability....193

Over The Road Operation With Snowplow
Attached......................................................... 193
Operating Tips ............................................... 193General Maintenance ................................... 193

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7
SAFETY TIPS ........................................................ 321 Transporting Passengers .............................. 321Transporting Pets ......................................... 322
Connected Vehicles....................................... 322
Safety Checks You Should Make Inside The
Vehicle ........................................................... 322Periodic Safety Checks You Should Make
Outside The Vehicle ...................................... 323Exhaust Gas ................................................... 324Carbon Monoxide Warnings ......................... 324
IN CASE OF EMERGENCY
HAZARD WARNING FLASHERS ........................ 325
ASSIST AND SOS SYSTEM — IF EQUIPPED ...... 326
JACKING AND TIRE CHANGING.......................... 329 4500/5500 Models ...................................... 329Preparations For Jacking .............................. 329Jacking Instructions 4500 And
5500 Series ................................................... 330To Stow The Flat Or Spare — If Equipped ... 332
Hub Caps/Wheel Covers —If Equipped ........ 332
JUMP STARTING .................................................. 333
Preparations For Jump Start......................... 333Jump Starting Procedure .............................. 334
IF YOUR ENGINE OVERHEATS ........................... 335
GEAR SELECTOR OVERRIDE .............................. 336 6–Speed Transmission — If Equipped ........ 336 MANUAL PARK RELEASE ................................... 337
8–Speed Transmission — If Equipped ......... 337
FREEING A STUCK VEHICLE .............................. 338
TOWING A DISABLED VEHICLE ......................... 339
Two-Wheel Drive Models .............................. 340Four-Wheel Drive Models ............................. 340
Emergency Tow Hooks — If Equipped .......... 341
ENHANCED ACCIDENT RESPONSE SYSTEM
(EARS) .................................................................. 341
EVENT DATA RECORDER (EDR) ........................ 341
SERVICING AND MAINTENANCE
SCHEDULED SERVICING ................................... 342
Maintenance Plan — Gasoline Engine ......... 344Maintenance Plan — Diesel Engine ............ 346
ENGINE COMPARTMENT .................................... 350
6.4L Gasoline Engine ................................... 3506.7L Diesel Engine ........................................ 351Checking Oil Level ......................................... 352
Adding Washer Fluid .................................... 352
Maintenance-Free Battery ............................ 352
Pressure Washing ......................................... 353 VEHICLE MAINTENANCE .................................... 353
Engine Oil ...................................................... 353
Engine Oil Filter ............................................. 354Engine Air Cleaner Filter .............................. 355
Air Conditioner Maintenance ....................... 357
Accessory Drive Belt Inspection ................... 359Draining Fuel/Water Separator Filter .......... 360
Engine Mounted Fuel Filter Replacement ... 361Underbody Mounted Fuel Filter
Replacement ................................................. 362

Priming If The Engine Has Run Out Of Fuel ...363

Intervention Regeneration Strategy —
Message Process Flow ................................ 364Diesel Exhaust Fluid (DEF) ........................... 364
Body Lubrication ........................................... 364
Windshield Wiper Blades.............................. 365
Exhaust System ............................................ 367
Cooling System ............................................. 368Charge Air Cooler — Inter-Cooler ................. 370
Brake System ............................................... 371Automatic Transmission ............................... 372
Rear Axle And 4x4 Front Driving Axle
Fluid Level ..................................................... 374
Transfer Case ............................................... 374Noise Control System Required
Maintenance & Warranty ............................ 374
Fuses.............................................................. 377
Bulb Replacement ........................................ 384

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68GETTING TO KNOW YOUR VEHICLE
Overhead Sunglass Storage
At the front of the overhead console, a
compartment is provided for the storage of one
pair of sunglasses.
From the closed position, push the door latch to
open the compartment.

Overhead Sunglass Door

The door will slowly rotate to the full open position.
Front Bench Seat Storage — If Equipped
If your vehicle is equipped with a front bench seat,
storage can be found by folding down the center
seatback. A console storage area and cupholders
are available. With the seatback in the upright
position, lifting the seat bottom also reveals a
storage location.
Front Bench Seat Storage Location

Seatback Storage — If Equipped
Located in the back of both the driver and
passenger front seats are pockets that can be
used for storage.

Driver’s Side Seatback Storage

Storage Bin (Regular Cab)
The storage bin is located behind the front seats
and runs the length of the cab.
Storage Bin

Fold Flat Load Floor — If Equipped
Crew Cab models with a 60/40 rear seat may be
equipped with a folding load floor.
WARNING!
Do not operate the vehicle with loose items
stored on the load floor. While driving or in an
accident you may experience abrupt stopping,
rapid acceleration, or sharp turns. Loose objects
stored on the load floor may move around with
force and strike occupants, resulting in serious
or fatal injury.

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192STARTING AND OPERATING
TOWING TIPS
Before setting out on a trip, practice turning,
stopping, and backing up the trailer in an area
located away from heavy traffic.
Automatic Transmission

The DRIVE range can be selected when towing. The
transmission controls include a drive strategy to
avoid frequent shifting when towing. However, if
frequent shifting does occur while in DRIVE, select
TOW/HAUL mode or select a lower gear range (using
the Electronic Range Select (ERS) shift control).

NOTE:Using TOW/HAUL mode or selecting a lower gear
range (using the ERS shift control) while operating
the vehicle under heavy loading conditions will
improve performance and extend transmission life
by reducing excessive shifting and heat build-up.
This action will also provide better engine braking.
6-Speed Automatic Transmission Only
When towing a loaded trailer up steep grades at
low speeds (20 mph [32 km/h] or below), holding
your vehicle in FIRST gear (using the ERS shift
control) can help to avoid transmission
overheating.

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 344.

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.
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.

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216MULTIMEDIA
Suspension/Air Suspension
Key Off Power Delay/Engine Off Power Delay This setting will keep certain electrical features running after the engine is
turned off. When any door is opened, the electronics will deactivate. The
available settings are “0 sec”, “45 sec”, “5 min”, and “10 min”.
Headlight Off Delay This setting will allow you to set the amount of time the headlights remain on
after the vehicle has been turned off. The “+” will increase the amount of
time. The “-” will decrease the amount of time.
Setting Name
Description
When the Suspension/Air Suspension button is pressed on the touchscreen, the system will display settings related to the vehicle’s air suspension.
NOTE:Depending on the vehicle’s options, feature settings may vary.
Setting NameDescription
Display Suspension Messages This setting will display suspension messages in the Instrument Cluster
Display. The “All” setting will display all available messages. The “Warnings
Only” setting will only display warning messages.
Tire Jack Mode This setting will disable the Air Suspension system to assist in changing a
spare tire.
Transport Mode This setting will disable the Air Suspension system for flat towing.
Wheel Alignment Mode This setting must be activated before performing a wheel alignment. Contact
an authorized dealer for further information.

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252MULTIMEDIA
Remote Vehicle Start
Description
The Remote Vehicle Start feature provides you with
the ability to start the engine on your vehicle
without the keys and from virtually any distance.
Once started, the preset climate controls in your
vehicle can warm up or cool down the interior.
You can also send a command to turn off an
engine that has been started using Remote Vehicle
Start. After 15 minutes, if you have not entered
your vehicle with the key, the engine will shut off
automatically.
This remote function requires your vehicle to be
equipped with a factory-installed Remote Start
system.
You can set up push notifications every time a
command is sent to activate or cancel Remote
Start.
Working Vehicle Conditions
The vehicle must be off or in ACC mode.
The vehicle has been started with the key fob
within the last 14 days.
The vehicle must be in PARK or at a standstill.
The vehicle’s security system has been armed
and not triggered since the last vehicle start.
The doors, hood, and trunk/liftgate are closed.
The vehicle’s check engine light must be off.
The vehicle must have at least a quarter tank of
fuel, along with oil and battery power.
The vehicle’s hazard lights must be off.
If equipped, the vehicle must have an automatic
transmission.
The vehicle must be in an open area with cell
tower reception.
Your mobile device must have a cellular or Wi-Fi
connection.
If the Panic button has been pressed, the
vehicle must be started at least once after
alarming the system.
NOTE:The SiriusXM Guardian™ Customer Care agents
are not authorized for Remote Vehicle Start
services. Contact the Uconnect Care Team for
assistance.
Remote Horn & Lights
Description
It is easy to locate a vehicle in a dark, crowded or
noisy parking area by activating the horn and
lights. It may also help if you need to draw attention
to your vehicle for any reason.
If you want, you can set up push notifications every
time a command is sent to turn on the horn and
lights. Working Vehicle Conditions
The vehicle must in PARK or at a standstill.
The vehicle must be in an open area with cell
tower reception.
Your mobile device must have a cellular or Wi-Fi
connection.
NOTE:The Remote Horn & Lights feature is designed to
be loud and get noticed. Please keep in mind the
surroundings when using this feature. You are
responsible for compliance with local laws, rules
and ordinances in the location of your vehicle
when using Remote Horn & Lights.
Assist — If Equipped
Description
Vehicles equipped with the SiriusXM Guardian™
connected services feature may contain an ASSIST
button in the vehicle. Once your SiriusXM
Guardian™ connected services have been
activated, the ASSIST button can connect you
directly to the Customer Care call center (if
equipped). You will be directed to one of the
following four services:
Roadside Assistance
— If you get a flat tire or
need a tow, you’ll be connected to someone
who can help anytime.

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SAFETY285
Follow the on screen prompts to select the number
of axles (1-3), the number of trailer tires (2, 4, 6, 8,
or 12), and the set trailer tire pressure. The range
is selectable anywhere between 25-125 psi
(172-862 kPa).
Once psi (kPa) is programmed, the pairing screen
appears. Tire sensors must be paired in order
shown. Starting with Tire 1, deflate tire by 5 psi
(34 kPa) and wait for a horn chirp. It may take up
to three minutes for the chirp to occur, indicating
that the sensor has paired. Repeat process on
each tire, in order, until complete. Do not exit the
pairing screen until process is complete. If pairing
was unsuccessful, a double horn chirp will sound,
and a prompt on the touchscreen will allow you to
retry the procedure; “Retry” will only appear when
setup fails. Each tire must be successfully paired
during a single pairing process to receive the
success screen.
NOTE:If the pairing process times out after three minutes
of no communication with a sensor, a double horn
chirp will occur indicating the pairing has failed and
a message will display on the radio indicating the
process was unsuccessful. Under certain circum -
stances, the double horn chirp may continue to
happen every three minutes indicating the failed
pairing. If this happens, the horn chirping may be
canceled by cycling the ignition button OFF and
then back to ON/RUN position. Trailer Tire Pressure Monitoring System Low
Pressure Warnings
When a low tire pressure in one or more of the
active road tires is detected, the instrument cluster
will display a message stating “Trailer Tire
Pressure Low”. The instrument cluster will then
display the TTPMS graphic showing the pressure
values of each tire with the low tire pressure values
in a different color.

Should this occur, you should stop as soon as possible
and inflate the tires with a low pressure condition
(those in a different color in the instrument cluster
graphic) to the customer programmed target tire
pressure value as shown at the top of the TTPMS
instrument cluster graphic. Once the tire(s) are inflated,
the system will automatically update the graphic
display in the instrument cluster, returning to its
original color. The vehicle may need to be driven for up
to 10 minutes above 15 mph (24 km/h) in order for the
TTPMS to receive the updated information.

Service TTPMS Warning
If a system fault is detected, the instrument cluster
will display a “Trailer Tire Pressure System Service
Required” message for a minimum of five seconds.
Once the system fault is corrected the "Trailer Tire
Pressure System Service Required" message will
no longer be displayed. The vehicle may need to be
driven for up to 10 minutes above 15 mph
(24 km/h) in order for the TTPMS to receive the
trailer tire pressure information. Trailer Tire Pressure System Not Configured
A “Trailer Tire Pressure System Not Configured”
message will be displayed in the instrument
cluster on the TTPMS instrument cluster graphic
when a trailer number is selected that has not had
trailer tire pressure sensors paired Ú
page 199.
Trailer Sensors Detected Do Not Match Active
Trailer
The “Trailer Sensors Detected Do Not Match Active
Trailer” message will be displayed in the
instrument cluster when the trailer sensors being
received by the TTPMS module do not match the
trailer sensors paired to the current trailer number
selected. This message will be displayed when the
sensors being received completely match the
sensors paired to another trailer number
configured in the TTPMS module.
To correct this condition, the correct trailer number
must be selected in the radio Ú page 199.
System Limitations
The TTPMS may have difficulty transmitting
through steel-walled tires or on trailers longer than
30 ft. It is recommended to use standard tires and
trailers less than 30 ft long to avoid dropouts or
difficulty when pairing.
NOTE:The vehicle may not be driven until the pairing
process is complete.
6

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286SAFETY
Tire Fill Alert — If Equipped
This feature notifies the user when the placard tire
pressure is attained while inflating or deflating the
tire.
The customer may choose to disable or enable the
Tire Fill Alert feature through use of the customer
settings in the radio.
NOTE:The Tire Fill Alert feature disables every time the
ignition is placed in the OFF position. The feature
must be re-enabled through the radio each time
the ignition is placed back in the ON/RUN position
Úpage 199.
NOTE:
Only one tire can be filled at a time when using
the Tire Fill Alert system.
The Tire Fill Alert feature cannot be entered if an
existing TPMS fault is set to “active” or if the
system is in deactivation mode (if equipped).
The system will be activated when the TPMS
receiver module detects a change in tire pressure.
The ignition must be in the RUN mode, with the
transmission in PARK (P).
NOTE:It is not required to have the engine running to
enter Tire Fill Alert mode. The hazard lamps will come on to confirm the
vehicle is in Tire Fill Alert mode.
If the hazard lamps do not come on while inflating
the tire, the TPMS sensor may be in a null spot
preventing the TPMS sensor signal from being
received. In this case, the vehicle may need to be
moved either forward or backward slightly to exit
the null spot.
When Tire Fill Alert mode is entered, the tire
pressure display screen will be displayed in the
instrument cluster.
Operation:
The horn will chirp once to let the user know
when to stop filling the tire, when it reaches
recommended pressure.
The horn will chirp three times if the tire is over
-
filled and will continue to chirp every five
seconds if the user continues to inflate the tire.
The horn will chirp once again when enough air
is let out to reach proper inflation level.
The horn will also chirp three times if the tire is
then underinflated and will continue to chirp
every five seconds if the user continues to
deflate the tire.
SELECTABLE TIRE FILL ALERT (STFA) —
IF EQUIPPED
The Selectable Tire Fill Alert (STFA) system is an
optional feature that is included as part of the
normal Tire Fill Alert system. The system is
designed to allow the customer to select a
pressure to inflate or deflate the vehicle's front and
rear axle tires to and to provide feedback to the
customer while inflating or deflating the vehicle's
tires.
In the Selectable Tire Fill Alert application, which is
located in the apps menu of the Uconnect system,
the customer will be able to select a pressure
setting for both the front and rear axle tire
pressures by scrolling through a pressure range
from XX to 15 psi in 1 psi increments for each axle
setting. XX = the vehicle’s cold placard pressure
values for the front and rear axles as shown on the
vehicle placard pressure label.
NOTE:The Tire Fill Alert feature disables every time the
ignition is placed in the OFF position. The feature
must be re-enabled through the radio each time
the ignition is placed back in the ON/RUN position
Ú page 199.

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SAFETY287
The customer may also store the pressure values
chosen for each axle in the radio as a preset
pressure. The customer will be allowed to store up
to two sets of preset values in the radio for the
front and rear axle pressure values.
Once the customer selects the tire pressures for
the front and rear axles that they want to inflate or
deflate to, they can begin inflating or deflating one
tire at a time.
NOTE:The STFA system will only support inflating or
deflating one tire at a time.
The customer may choose to disable or enable the
STFA feature through use of the TFA settings in the
radio. If STFA appears grayed out it must be turned
on prior to selecting.
In order to use STFA, the Tire Fill Alert feature must
be enabled through the radio Ú page 199.
The system will be activated when the TPMS
receiver module detects a change in tire pressure.
The ignition must be in the RUN mode, with the
transmission in PARK (P).
The hazard lamps will come on to confirm the
vehicle is in Tire Fill Alert mode.
If the hazard lamps do not come on while inflating
or deflating the tire, the TPMS sensor may be in a
null spot preventing the TPMS sensor signal from
being received. In this case, the vehicle may need to be moved either forward or backward slightly to
exit the null spot.
When Tire Fill Alert mode is entered, the tire
pressure display screen will be displayed in the
instrument cluster.
Operation:
The horn will chirp once when the selected pres
-
sure is reached to let the user know when to
stop inflating or deflating the tire.
The horn will chirp three times if the tire is over -
inflated or over deflated and will continue to
chirp every five seconds if the user continues to
inflate or deflate the tire.
The horn will chirp once again when enough air
is added or removed to reach proper selected
pressure level.
Tire Pressure Information System (TPIS)
3500/4500/5500 Series Trucks
Your vehicle may be equipped with a Tire Pressure
Information System (TPIS).
The Tire Pressure Information System (TPIS) uses
wireless technology with wheel rim mounted
electronic sensors to transmit tire pressure levels.
Sensors mounted to each wheel as part of the
valve stem transmit tire pressure readings to the
receiver module.
NOTE:It is particularly important for you to check the tire
pressure in all of the tires on your vehicle monthly
and to maintain the proper pressure.
The TPIS consists of the following components:
Receiver module
Four TPMS sensors (Single Rear Wheel (SRW)
applications)
Six TPMS sensors (Dual Rear Wheel (DRW)
applications)
Pressure display in the instrument cluster
The TPIS will display all four (Single Rear Wheel
(SRW) applications) or six (Dual Rear Wheel (DRW)
applications) tire pressure values in the instrument
cluster display.
If a system fault is detected, the instrument cluster
will display a "SERVICE TPM SYSTEM" message for
a minimum of five seconds and then display
dashes (- -) in place of the pressure value to
indicate which sensor is not being received.
If the ignition switch is cycled, this sequence will
repeat, providing the system fault still exists. If the
system fault no longer exists, the "SERVICE TPM
SYSTEM" message will no longer be displayed, and
a pressure value will display in place of the dashes.
6

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