cooling RAM CHASSIS CAB 2023 Owners Manual

4
GETTING TO KNOW YOUR
INSTRUMENT PANEL

MIDLINE INSTRUMENT CLUSTER — GASOLINE.....78

Midline Instrument Cluster Descriptions ........79

HIGHLINE INSTRUMENT CLUSTER — GASOLINE...80

Highline Instrument Cluster Descriptions.......81

PREMIUM INSTRUMENT CLUSTER — GASOLINE ..82

Premium Instrument Cluster Descriptions —
Gasoline ............................................................83
BASE INSTRUMENT CLUSTER — DIESEL ........... 84
Diesel Instrument Cluster ...............................85
MIDLINE INSTRUMENT CLUSTER — DIESEL ...... 86
Diesel Instrument Cluster ...............................87
PREMIUM INSTRUMENT CLUSTER — DIESEL .... 88
Premium Instrument Cluster Descriptions —
Diesel ................................................................89
INSTRUMENT CLUSTER DISPLAY ........................ 89
Instrument Cluster Display Location and
Controls .............................................................90
Oil Life Reset ....................................................92
Display Menu Items .........................................93
Diesel Messages And Warnings ......................98
Battery Saver On/Battery Saver Mode
Message — Electrical Load Reduction
Actions — If Equipped ................................... 101 WARNING LIGHTS AND MESSAGES ................. 102
Red Warning Lights ....................................... 103
Yellow Warning Lights ................................... 105Yellow Indicator Lights .................................. 108
Green Indicator Lights .................................. 109
White Indicator Lights ................................... 110Blue Indicator Lights ..................................... 111
ONBOARD DIAGNOSTIC SYSTEM — OBD II ..... 111
Onboard Diagnostic System
(OBD II) Cybersecurity ................................... 111
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS.......................................................... 112
STARTING AND OPERATING
STARTING THE ENGINE— GASOLINE ENGINE.. 113
Automatic Transmission ............................... 113
AutoPark — Rotary Shifter and 8-Speed
Transmission Only ......................................... 113
Tip Start Feature .......................................... 115
Keyless Enter ‘n Go™ — Ignition................... 115Normal Starting Using ENGINE START/STOP
Button ........................................................... 115
Cold Weather Operation
(Below –22°F Or −30°C) ............................ 117
After Starting ................................................. 117 STARTING THE ENGINE — DIESEL ENGINE....... 117
Automatic Transmission ............................... 117
Keyless Enter ‘n Go™ — Ignition .................. 117
Extreme Cold Weather .................................. 119Normal Starting Procedure — Engine Manifold
Air Temperature Above 66°F (19°C) .......... 119
Starting Procedure — Engine Manifold
Air Temperature 0°F To 66°F
(–18°C to 19°C) ........................................... 120
Starting Procedure — Engine Manifold Air
Temperature Below 0°F (-18°C) ................. 121
Starting Fluids ............................................... 121
NORMAL OPERATION — DIESEL ENGINE ......... 122
Cold Weather Precautions ............................ 122
Engine Idling ................................................. 124
Noise .............................................................. 124
Stopping The Engine ..................................... 125Idle Shutdown ............................................... 125Programmable Maximum Vehicle Speed .... 126
Operating Precautions .................................. 126Cooling System Tips ...................................... 126
Diesel Particulate Filter (DPF) Manual
Regeneration — If Equipped ......................... 127
ENGINE BLOCK HEATER — IF EQUIPPED .......... 127
ENGINE BREAK-IN RECOMMENDATIONS—
GASOLINE ENGINE .............................................. 127

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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

23_DPF_OM_EN_USC_t.book Page 7

GETTING TO KNOW YOUR VEHICLE59
AUTOMATIC CLIMATE CONTROL
D
ESCRIPTIONS AND FUNCTIONS

Uconnect 5/5 NAV With 8.4-inch Display Automatic
Temperature Controls
Uconnect 5 NAV With 12-inch Display Automatic Temperature Controls

NOTE:Icons and descriptions can vary based upon
vehicle equipment.
MAX A/C Button
Press and release the MAX A/C button on
the touchscreen to change the current
setting to the coldest output of air. The
MAX A/C indicator illuminates when MAX
A/C is on. Pressing the button again will cause the
MAX A/C operation to exit. Pressing other settings
will also cause the MAX A/C to exit.
NOTE:
MAX A/C sets the control for maximum cooling
performance.
The MAX A/C button is only available on the
touchscreen.
A/C Button
Press and release this button on the
touchscreen, or push the button on
the faceplate to change the current
setting. The A/C indicator illuminates
when A/C is on.
Recirculation Button
Press and release this button on the
touchscreen, or push the button on the
faceplate, to change the system between
Recirculation mode and outside air
mode. The Recirculation indicator and the A/C
indicator illuminate when the Recirculation button
is pressed. Recirculation can be used when
outside conditions, such as smoke, odors, dust, or
high humidity are present. Recirculation can be
used in all modes. Recirculation may be
unavailable (button on the touchscreen greyed
out) if conditions exist that could create fogging on
the inside of the windshield. The A/C can be
deselected manually without disturbing the mode
control selection. Continuous use of the
Recirculation mode may make the inside air stuffy
and window fogging may occur. Extended use of
this mode is not recommended. Recirculation
mode may automatically adjust to optimize
customer experience for warming, cooling,
dehumidification, etc.
In cold weather, use of Recirculation mode may
lead to excessive window fogging. The
Recirculation feature may be unavailable if
conditions exist that could create fogging on the
inside of the windshield.
2

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64GETTING TO KNOW YOUR VEHICLE
Mix Mode
Air is directed through the floor, defrost,
and side window demister outlets. This
setting works best in cold or snowy
conditions that require extra heat to the
windshield. This setting is good for maintaining
comfort while reducing moisture on the
windshield.
AUTOMATIC TEMPERATURE CONTROL
(ATC)
Automatic Operation

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

2. Next, adjust the temperature you would like the system to maintain by adjusting the driver
and passenger temperature control buttons.
Once the desired temperature is displayed, the
system will achieve and automatically
maintain that comfort level.
3. When the system is set up for your comfort level, it is not necessary to change the
settings. You will experience the greatest
efficiency by simply allowing the system to
function automatically.
NOTE:
It is not necessary to move the temperature
settings for cold or hot vehicles. The system
automatically adjusts the temperature, mode,
and blower speed to provide comfort as quickly
as possible.
The temperature can be displayed in U.S. or
Metric units by selecting the U.S./Metric within
Uconnect Settings Ú page 199.
To provide you with maximum comfort in the
Automatic mode during cold start-ups, the blower
fan will remain on low until the engine warms up.
The blower will increase in speed and transition
into Auto mode.
Manual Operation Override
This system offers a full complement of manual
override features. The AUTO symbol in the front
ATC display will be turned off when the system is
being used in the manual mode.
CLIMATE VOICE RECOGNITION —
I
F EQUIPPED
Adjust vehicle temperatures hands-free and keep
everyone comfortable while you keep moving
ahead. Push the VR button on the steering wheel. After the
beep, say one of the following commands:
“
Set driver temperature to 70 degrees ”
“Set passenger temperature to 70 degrees ”
Did you know: Voice Command for Climate may
only be used to adjust the interior temperature of
your vehicle. Voice Command will not work to
adjust the heated seats or steering wheel if
equipped.
OPERATING TIPS
Refer to the chart at the end of this section for
suggested control settings for various weather
conditions.
Summer Operation
The engine cooling system must be protected with
a high-quality antifreeze coolant to provide proper
corrosion protection and to protect against engine
overheating. OAT coolant (conforming to
MS.90032) is recommended.
Winter Operation
To ensure the best possible heater and defroster
performance, make sure the engine cooling
system is functioning properly and the proper
amount, type, and concentration of coolant is
used. Use of the Air Recirculation mode during
Winter months is not recommended, because it
may cause window fogging.

23_DPF_OM_EN_USC_t.book Page 64

GETTING TO KNOW YOUR INSTRUMENT PANEL79
Use this QR code to access your
digital experience.
MIDLINE INSTRUMENT
C
LUSTER DESCRIPTIONS

1. Tachometer

Indicates the engine speed
in revolutions per minute (RPM x 1000).
2. Voltmeter
When the vehicle is in the RUN state, the
gauge indicates the electrical system
voltage. The pointer should stay within the
normal range if the battery is charged. If the
pointer moves to either extreme left or right
and remains there during normal driving,
the electrical system should be serviced.
3. Instrument Cluster Display
When the appropriate conditions exist, this
display shows the instrument cluster
display messages Ú page 89.
The display always shows one of the main
menu item after the ignition is placed on.
4. Oil Pressure Gauge
The pointer should always indicate the oil
pressure when the engine is running. A
continuous high or low reading under
normal driving conditions may indicate a lubrication system malfunction. Immediate
service should be obtained from an autho
-
rized dealer.
5. Speedometer
Indicates vehicle speed.
6. Temperature Gauge
The gauge pointer shows engine coolant
temperature. The pointer positioned within
the normal range indicates that the engine
cooling system is operating satisfactorily.
The gauge pointer will likely indicate a
higher temperature when driving in hot
weather, up mountain grades, or when
towing a trailer. It should not be allowed to
exceed the upper limits of the normal oper -
ating range. 7. Fuel Gauge
The pointer shows the level of fuel in the
fuel tank when the ignition is in the ON/RUN
position.
 The fuel pump symbol points to
the side of the vehicle where the
fuel door is located.
NOTE:The Instrument Cluster Warning Indicators will illu -
minate briefly for a bulb check when the ignition is
first cycled.
WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. It is recommended to call an authorized
dealer for service if your vehicle overheats. If you
decide to look under the hood yourself, Follow
the warnings under the Cooling System Pressure
Cap paragraph Ú page 368.
CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge
reads “H,” pull over and stop the vehicle. Idle the
vehicle with the air conditioner turned off until
the pointer drops back into the normal range. If
the pointer remains on the “H,” turn the engine
off immediately and call an authorized dealer for
service.
3

23_DPF_OM_EN_USC_t.book Page 79

GETTING TO KNOW YOUR INSTRUMENT PANEL81
HIGHLINE INSTRUMENT CLUSTER
D
ESCRIPTIONS

1. Tachometer

Indicates the engine speed in revolutions
per minute (RPM x 1000).
2. Instrument Cluster Display
When the appropriate conditions exist, this
display shows the instrument cluster
display messages Ú page 89.
The display always shows one of the main
menu item after the ignition is placed on.
3. Speedometer
Indicates vehicle speed.
4. Temperature Gauge
The gauge pointer shows engine coolant
temperature. The pointer positioned within
the normal range indicates that the engine
cooling system is operating satisfactorily.
The gauge pointer will likely indicate a
higher temperature when driving in hot
weather, up mountain grades, or when
towing a trailer. It should not be allowed to
exceed the upper limits of the normal oper -
ating range. 5. Fuel Gauge
The pointer shows the level of fuel in the
fuel tank when the ignition is in the ON/RUN
position.
 The fuel pump symbol points to
the side of the vehicle where the
fuel door is located.
NOTE:The Instrument Cluster Warning Indicators will illu -
minate briefly for a bulb check when the ignition is
first cycled.
WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. It is recommended to call an authorized
dealer for service if your vehicle overheats. If you
decide to look under the hood yourself, Follow
the warnings under the Cooling System Pressure
Cap paragraph Ú page 368.
CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge
reads “H,” pull over and stop the vehicle. Idle the
vehicle with the air conditioner turned off until
the pointer drops back into the normal range. If
the pointer remains on the “H,” turn the engine
off immediately and call an authorized dealer for
service.
3

23_DPF_OM_EN_USC_t.book Page 81

GETTING TO KNOW YOUR INSTRUMENT PANEL83
PREMIUM INSTRUMENT CLUSTER
D
ESCRIPTIONS — GASOLINE

1. Temperature Gauge

The temperature gauge shows engine
coolant temperature. Any reading within
203°F - 230°F (95°C - 110°C) indicates
that the engine cooling system is operating
satisfactorily.
The pointer will likely indicate a higher
temperature when driving in hot weather,
up mountain grades, or when towing a
trailer. It should not be allowed to exceed
the upper limits of the normal operating
range. 2. Speedometer
Indicates vehicle speed.
3. Fuel Gauge
The pointer shows the level of fuel in the
fuel tank when the Keyless Push Button
Ignition is in the ON/RUN position.
 The fuel pump symbol points to
the side of the vehicle where the
fuel door is located.
4. Tachometer
Indicates the engine speed in revolutions
per minute (RPM x 1000).
5. Instrument Cluster Display
The instrument cluster display features a
driver interactive display Ú page 89.
NOTE:The hard telltales will illuminate for a bulb check
when the ignition is first cycled.
WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. It is recommended to call an authorized
dealer for service if your vehicle overheats. If you
decide to look under the hood yourself, Follow
the warnings under the Cooling System Pressure
Cap paragraph Úpage 368.
CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge
reads “H,” pull over and stop the vehicle. Idle the
vehicle with the air conditioner turned off until
the pointer drops back into the normal range. If
the pointer remains on the “H,” turn the engine
off immediately and call an authorized dealer for
service.
3

23_DPF_OM_EN_USC_t.book Page 83

GETTING TO KNOW YOUR INSTRUMENT PANEL85
DIESEL INSTRUMENT CLUSTER

1. Tachometer

Indicates the engine speed in revolutions
per minute (RPM x 1000).
2. Engine Coolant Temperature

This gauge shows the engine coolant tempera -
ture. The gauge pointer will likely show higher
temperatures when driving in hot weather, up
mountain grades, or in heavy stop and go
traffic. If the red Warning Light turns on while
driving, safely bring the vehicle to a stop, and
turn off the engine. DO NOT operate the
vehicle until the cause is corrected.
3. Instrument Cluster Display
When the appropriate conditions exist, this
display shows the instrument cluster
display messages Ú
page 89.
The display always shows one of the main
menu item after the ignition is placed on.
4. Oil Pressure Gauge
The pointer should always indicate some oil
pressure when the engine is running. A
continuous high or low reading under
normal driving conditions may indicate a
lubrication system malfunction. Immediate
service should be obtained from an autho -
rized dealer.
5. Speedometer
Indicates vehicle speed.
6. Diesel Exhaust Fluid (DEF) Gauge
The DEF Gauge displays the actual level of
Diesel Exhaust Fluid in the DEF tank. DEF is
required to maintain normal vehicle opera -
tion and emissions compliance. If some -
thing is wrong with the gauge, a DEF
Warning Message or Malfunction Indicator
Light (MIL) will be displayed. More informa -
tion is available in the instrument cluster
display section under the heading of DEF
Warning Messages. 7. Fuel Gauge
The pointer shows the level of fuel in the
fuel tank when the ignition switch is in the
ON/RUN position.
 The fuel pump symbol points to
the side of the vehicle where the
fuel filler door is located.
NOTE:
The gauge may take up to five seconds to
update after adding a gallon or more of DEF to
the DEF tank. If you have a fault related to the
DEF system, the gauge may not update to the
new level. See an authorized dealer for service.
The DEF gauge may also not immediately
update after a refill if the temperature of the
DEF fluid is below 39°F (4°C). The DEF tank
heater will possibly warm up the DEF fluid and
allow the gauge to update after a period of run
time. Under very cold conditions, it is possible
that the gauge may not reflect the new fill level
for several drives.
NOTE:The Instrument Cluster Warning Indicators will illu -
minate briefly for a bulb check when the ignition is
first cycled.
WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. It is recommended to call an authorized
dealer for service if your vehicle overheats.
CAUTION!

Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge reads
greater “H,” pull over and stop the vehicle. Idle the
vehicle with the air conditioner turned off until the
pointer drops back into the normal range. If the
pointer remains on the “h,” turn the engine off
immediately and call an authorized dealer for service.

3

23_DPF_OM_EN_USC_t.book Page 85

GETTING TO KNOW YOUR INSTRUMENT PANEL89
PREMIUM INSTRUMENT CLUSTER
D
ESCRIPTIONS — DIESEL

1. Temperature Gauge

The temperature gauge shows engine
coolant temperature. Any reading within
203°F - 230°F (95°C - 110°C) indicates
that the engine cooling system is operating
satisfactorily.
The pointer will likely indicate a higher
temperature when driving in hot weather,
up mountain grades, or when towing a
trailer. It should not be allowed to exceed
the upper limits of the normal operating
range. 2. Speedometer
Indicates vehicle speed.
3. Fuel Gauge
The pointer shows the level of fuel in the
fuel tank when the Keyless Push Button
Ignition is in the ON/RUN position.
 The fuel pump symbol points to
the side of the vehicle where the
fuel door is located.
4. Tachometer
Indicates the engine speed in revolutions
per minute (RPM x 1000). 5. Instrument Cluster Display
The instrument cluster display features a
driver interactive display Ú
page 89.
NOTE:The hard telltales will illuminate for a bulb check
when the ignition is first cycled.
INSTRUMENT CLUSTER DISPLAY
Your vehicle is equipped with an instrument cluster
display, which offers useful information to the
driver. With the ignition in the OFF mode, opening/
closing of a door will activate the display for
viewing, and display the total miles, or kilometers,
in the odometer. Your instrument cluster display is
designed to display important information about
your vehicle’s systems and features. Using a driver
interactive display located on the instrument
panel, your instrument cluster display can show
you how systems are working and give you
warnings when they are not. The steering wheel
mounted controls allow you to scroll through the
main menus and submenus. You can access the
specific information you want and make selections
and adjustments.
WARNING!
A hot engine cooling system is dangerous. You or
others could be badly burned by steam or boiling
coolant. It is recommended to call an authorized
dealer for service if your vehicle overheats. If you
decide to look under the hood yourself, Follow
the warnings under the Cooling System Pressure
Cap paragraph Úpage 368.
CAUTION!
Driving with a hot engine cooling system could
damage your vehicle. If the temperature gauge
reads “H,” pull over and stop the vehicle. Idle the
vehicle with the air conditioner turned off until
the pointer drops back into the normal range. If
the pointer remains on the “H,” turn the engine
off immediately and call an authorized dealer for
service.
3

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126STARTING AND OPERATING
PROGRAMMABLE MAXIMUM VEHICLE
S
PEED
This feature allows the owner to set a maximum
vehicle speed for the vehicle. The 2500 and 3500
Series maximum vehicle speed can be set
between 40 mph to 87 mph (64 km/h to
140 km/h). The 4500/5500 Series maximum
vehicle speed can be set between 40 mph to
85 mph (64 km/h to 136 km/h). See an
authorized dealer to enable this feature.
NOTE:DO NOT set the maximum vehicle speed to a value
greater than what the vehicle tires are rated for.
OPERATING PRECAUTIONS
Avoid Overheating The Engine
The temperature of the engine coolant (antifreeze:
a mixture of 50% ethylene-glycol and 50% water)
must not exceed the normal range of the
temperature gauge 240°F (116°C) with a 21 psi
(145 kPa) coolant pressure cap.
Usually the engine coolant (antifreeze)
temperature indicated during operation will be to
the left of center in the normal range of the gauge.
Avoid Low Coolant Temperature Operation
Continual operation at low engine coolant
(antifreeze) temperature below the normal range
on the gauge 140°F (60°C) can be harmful to the engine. Low engine coolant (antifreeze)
temperature can cause incomplete combustion
which allows carbon and varnish to form on piston
rings and injector nozzles. Also, the unburned fuel
can enter the crankcase, diluting the lubricating oil
and causing rapid wear to the engine.
COOLING SYSTEM TIPS
To reduce potential for engine and transmission
overheating in high ambient temperature
conditions, take the following actions:
City Driving — When stopped, shift the transmis
-
sion into NEUTRAL and increase engine idle
speed.
Highway Driving — Reduce your speed.
Up Steep Hills — Select a lower transmission
gear.
Air Conditioning — Turn it off temporarily.
Do Not Operate The Engine With Low Oil
Pressure
When the engine is at normal operating
temperature, the minimum oil pressures required
are:
Do Not Operate The Engine With Failed
Parts
All engine failures give some warning before the
parts fail. Be on the alert for changes in
performance, sounds, and visual evidence that the
engine requires service. Some important clues are:
Engine misfiring or vibrating severely.
Sudden loss of power.
Unusual engine noises.
Fuel, oil or coolant leaks.
Sudden change, outside the normal operating
range, in the engine operating temperature.
Excessive smoke.
Oil pressure drop.
Idle 700 to 800 RPM 10 psi (69 kPa)
Full speed and load 30 psi (207 kPa)
CAUTION!
If oil pressure falls to less than normal readings,
shut the engine off immediately. Failure to do so
could result in immediate and severe engine
damage.

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