2021 RAM CHASSIS CAB display

62GETTING TO KNOW YOUR VEHICLE
Bi-Level Mode

Air comes from the instrument panel
outlets and floor outlets. A slight amount
of air is directed through the defrost and
side window demister outlets.

NOTE:
Bi-Level mode is designed under comfort condi -
tions to provide cooler air out of the panel
outlets and warmer air from the floor outlets.
Floor Mode
Air comes from the floor outlets.
A slight amount of air is directed
through the defrost and side window
demister outlets.
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.
Climate Control OFF Button
Press and release the OFF button on
the touchscreen, or push the OFF
button on the faceplate (if equipped)
to turn the Climate Control on/off.
MANUAL CLIMATE CONTROL
D
ESCRIPTIONS AND FUNCTIONS

Uconnect 3 With 5-inch Display Manual Temperature
Controls

MAX A/C Setting
Set the temperature control knob to
the MAX A/C setting to change the
current setting to the coldest output
of air. Moving the temperature control
knob away from the MAX A/C setting causes the
MAX A/C operation to exit.
A/C Button
Push the A/C button to engage the Air
Conditioning (A/C). The A/C indicator
illuminates when A/C is on.
Recirculation Button

Push the Recirculation button 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 humidity are present.
Recirculation can be used in all modes except for
Defrost. Recirculation may be unavailable 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.

On vehicles equipped with the Manual Climate
Controls system, the Recirculation mode is not
allowed in Defrost mode to improve window
clearing operation. Recirculation is disabled
automatically if this mode is selected.

21_DPF_OM_EN_USC_t.book Page 62

64GETTING TO KNOW YOUR VEHICLE
Panel Mode
Air comes from the outlets in the
instrument panel. Each of these
outlets can be individually adjusted to
direct the flow of air. The air vanes of
the center outlets and outboard outlets can be
moved up and down or side to side to regulate
airflow direction. There is a shut off wheel
located below the air vanes to shut off or adjust
the amount of airflow from these outlets.
Bi-Level Mode

Air comes from the instrument panel
outlets and floor outlets. A slight amount
of air is directed through the defrost and
side window demister outlets.

NOTE:
Bi-Level mode is designed under comfort condi -
tions to provide cooler air out of the panel
outlets and warmer air from the floor outlets.
Floor Mode
Air comes from the floor outlets.
A slight amount of air is directed
through the defrost and side window
demister outlets.
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
C
ONTROL (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 228.
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.

21_DPF_OM_EN_USC_t.book Page 64

72GETTING TO KNOW YOUR VEHICLE
USB/AUX CONTROL
Located on the center stack, just below the
instrument panel, is the main media hub. There
are four total USB ports: Two Mini-USBs (Type C)
and two Standard USBs (Type A). There is also
an AUX port located in the middle of the USB
Ports.
Plugging in a smartphone device to a USB port
may activate Android Auto™ or Apple CarPlay®
features, if equipped. For further information,
refer to “Android Auto™” or “Apple CarPlay®” in
the Owner’s Manual Supplement.
NOTE:
Two devices can be plugged in at the same
time, and both ports will provide charging capa-
bilities. Only one port can transfer data to the
system at a time. A pop-up will appear and allow
you to select the device transferring data.
For example, if a device is plugged into the Type
A USB port and another device is plugged into
the Type C USB port, a message will appear and
allow you to select which device to use.
Center Stack USB/AUX Media Hub
Rear USB Ports
Third and fourth USB ports are located behind
the center console, above the power inverter.
One of these USBs ports is charge only.
Applicable to only Uconnect 4C/4C NAV With
8.4-inch Display, and Uconnect 4C NAV With
12-inch Display radios, different scenarios are
listed below when a non-phone device is
plugged into the smaller and larger USB ports,
and when a phone device is plugged into the
smaller and larger USB ports:
“A new device is now connected. Previous
connection was lost”.
“(Phone Name) now connected. Previous
connection was lost”.
“Another device is in use through the same
USB port. Please disconnect the first device
to use the second device”.
Plugging in a phone or another USB device may
cause the connection to a previous device to be
lost.
If equipped, your vehicle may also contain a
USB port located on the top tray of the vehicles
center console.
1 — USB Port #1
2 — AUX Port
3 — USB Port #2
1 — Rear Media USB Ports
2 — Rear Charge Only USB Ports

21_DPF_OM_EN_USC_t.book Page 72

GETTING TO KNOW YOUR INSTRUMENT PANEL81
BASE / MIDLINE INSTRUMENT CLUSTER
D
ESCRIPTIONS

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 90.

Base Instrument Cluster Display

The display always shows one of the main
menu item after ignition 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. Imme
-
diate service should be obtained from an
authorized dealer.
5. Speedometer
Indicates vehicle speed.
1 – Instrument Cluster Display Controls
2 – Instrument Cluster Display Screen
3

21_DPF_OM_EN_USC_t.book Page 81

84GETTING TO KNOW YOUR INSTRUMENT PANEL
PREMIUM 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 90.

Premium Instrument Cluster Display

The display always shows one of the main
menu item after ignition 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
operating 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.
1 – Instrument Cluster Display Controls
2 – Instrument Cluster Display Screen
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 383.

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.

21_DPF_OM_EN_USC_t.book Page 84

86GETTING TO KNOW YOUR INSTRUMENT PANEL
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
temperature. 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 90.

Base Instrument Cluster Display

The display always shows one of the main
menu item after ignition on.
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.

1 – Instrument Cluster Display Controls
2 – Instrument Cluster Display Screen

21_DPF_OM_EN_USC_t.book Page 86

GETTING TO KNOW YOUR INSTRUMENT PANEL87
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. Imme-
diate service should be obtained from an
authorized 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
operation and emissions compliance. If
something 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.
3

21_DPF_OM_EN_USC_t.book Page 87

GETTING TO KNOW YOUR INSTRUMENT PANEL89
DIESEL INSTRUMENT CLUSTER

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 90.

Premium Instrument Cluster Display

The display always shows one of the main
menu item after ignition on. 3. Speedometer
Indicates vehicle speed.
4. 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 operation and emissions compli -
ance. If something is wrong with the
gauge, a DEF Warning Message or
Malfunction Indicator Light (MIL) will be
displayed. More information is available
in the instrument cluster display section
under the heading of Diesel Exhaust
Fluid (DEF) Warning Messages.
5. 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 DEF tank on these vehicles is designed
with a large amount of full reserve. So the
level sensor will indicate a full reading even
before the tank is completely full. To put it
another way, there’s additional storage
capacity in the tank above the Full mark
that’s not represented in the gauge. You may
not see any movement in the reading – even
after driving up to 200 miles (321 kilome
-
ters) in some cases.
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.
1 – Instrument Cluster Display Controls
2 – Instrument Cluster Display Screen
3

21_DPF_OM_EN_USC_t.book Page 89