2021 RAM 1500 climate control

GETTING TO KNOW YOUR VEHICLE61
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.
Auto Button
Set your desired temperature and
press AUTO. AUTO will achieve and
maintain your desired temperature by
automatically adjusting the blower speed and air distribution. AUTO mode is highly
recommended for efficiency.
You can turn AUTO on in one of two ways:
Press and release this button on the touch
-
screen.
Push the button on the faceplate.
Toggling this function will cause the system to
switch between manual mode and automatic
mode Ú page 65.
Front Defrost Button
Press and release the Front Defrost
button on the touchscreen, or push
and release the button on the
faceplate, to change the current
airflow setting to Defrost mode. The Front
Defrost indicator illuminates when Front
Defrost is on. Air comes from the windshield
and side window demist outlets. When the
defrost button is selected, the blower level may
increase. Use Defrost mode with maximum
temperature settings for best windshield and
side window defrosting and defogging. When
toggling the front defrost mode button, the
climate system will return to the previous
setting.
Rear Defrost Button
Press and release the Rear Defrost
button on the touchscreen, or push
and release the button on the
faceplate, to turn on the rear window
defroster and the heated outside mirrors (if
equipped). The Rear Defrost indicator
illuminates when the rear window defroster is
on. The rear window defroster automatically
turns off after 15 minutes.
CAUTION!
Failure to follow these cautions can cause
damage to the heating elements:
Use care when washing the inside of the
rear window. Do not use abrasive window
cleaners on the interior surface of the
window. Use a soft cloth and a mild
washing solution, wiping parallel to the
heating elements. Labels can be peeled off
after soaking with warm water.
Do not use scrapers, sharp instruments, or
abrasive window cleaners on the interior
surface of the window.
Keep all objects a safe distance from the
window.
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62GETTING TO KNOW YOUR VEHICLE
Driver And Passenger Temperature Up And
Down Buttons
These buttons provide the driver and passenger
with independent temperature control.
Push the red button (or rotate knob if
equipped) on the faceplate or
touchscreen, or press and slide the
temperature bar towards the red
arrow button on the touchscreen for warmer
temperature settings.
Push the blue button (or rotate knob if
equipped) on the faceplate or
touchscreen, or press and slide the
temperature bar towards the blue
arrow button on the touchscreen for cooler
temperature settings.
NOTE:
The numbers within the temperature display
will only appear if the system is equipped
with an automatic climate control system.
Up and down buttons are only available on
vehicles equipped with a 12-inch display.
SYNC Button
Press the SYNC button on the
touchscreen to toggle the SYNC
feature on/off. The SYNC indicator
illuminates when SYNC is on. SYNC
synchronizes the passenger temperature
setting with the driver temperature setting.
Changing the passenger’s temperature setting
while in SYNC will automatically exit this
feature.
NOTE:
The SYNC button is only available on the touch -
screen.
Blower Control
Blower Control regulates the amount
of air forced through the climate
control system. There are seven
blower speeds available. Adjusting
the blower will cause automatic mode to switch
to manual operation. The speeds can be
selected using either the blower control knob on
the faceplate or the buttons on the
touchscreen. Faceplate
The blower speed increases as you turn the
blower control knob clockwise from the lowest
blower setting. The blower speed decreases as
you turn the blower control knob
counterclockwise.
Touchscreen
Use the small blower icon to reduce the blower
setting and the large blower icon to increase the
blower setting. Blower can also be selected by
pressing the blower bar area between the icons.
Mode Control
Select Mode by pressing one of the
Mode buttons on the touchscreen, or
pushing the Mode button on the
faceplate, to change the airflow
distribution mode. The airflow distribution mode
can be adjusted so air comes from the
instrument panel outlets, floor outlets, defrost
outlets, and demist outlets.

21_DT_OM_EN_USC_t.book Page 62

GETTING TO KNOW YOUR VEHICLE63
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.
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.
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64GETTING TO KNOW YOUR VEHICLE
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.
NOTE:
For Manual Climate Controls, if the system is
in Mix, Floor or Defrost Mode, the A/C can be
turned off, but the A/C system shall remain
active to prevent fogging of the windows.
If fog or mist appears on the windshield or
side glass, select Defrost mode, and increase
blower speed if needed.
If your air conditioning performance seems
lower than expected, check the front of the
A/C condenser (located in front of the radi -
ator), for an accumulation of dirt or insects.
Clean with a gentle water spray from the front
of the radiator and through the condenser.
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 systems with Manual Climate Controls, the
Recirculation mode is not allowed in Defrost
mode to improve window cleaning operation.
Recirculation is disabled automatically if this
mode is selected. Attempting to use
Recirculation while in this mode causes the LED
in the control button to blink and then turn off.
Front Defrost Setting
Turn the mode control knob to the
Front Defrost mode setting. Air comes
from the windshield and side window
demist outlets. When the defrost
button is selected, the blower level may
increase. Use Defrost mode with maximum
temperature settings for best windshield and
side window defrosting and defogging.
Rear Defrost Button
Push and release the Rear Defrost
Control button to turn on the rear
window defroster and the heated
outside mirrors (if equipped). The
Rear Defrost indicator illuminates when the rear
window defroster is on. The rear window
defroster automatically turns off after
15 minutes.
CAUTION!
Failure to follow these cautions can cause
damage to the heating elements:
Use care when washing the inside of the
rear window. Do not use abrasive window
cleaners on the interior surface of the
window. Use a soft cloth and a mild
washing solution, wiping parallel to the
heating elements. Labels can be peeled off
after soaking with warm water.
Do not use scrapers, sharp instruments, or
abrasive window cleaners on the interior
surface of the window.
Keep all objects a safe distance from the
window.

21_DT_OM_EN_USC_t.book Page 64

GETTING TO KNOW YOUR VEHICLE65
Temperature Control
Temperature Control regulates the temperature
of the air forced through the climate system.
The temperature increases as you
turn the temperature control knob
clockwise.
The temperature decreases as you
turn the temperature control knob
counterclockwise.
Blower Control
Blower Control regulates the amount
of air forced through the climate
control system. There are seven
blower speeds available. The blower
speed increases as you turn the blower control
knob clockwise from the lowest blower setting.
The blower speed decreases as you turn the
blower control knob counterclockwise.
Mode Control
Turn the mode control knob to adjust
airflow distribution. The airflow
distribution mode can be adjusted so
air comes from the instrument panel
outlets, floor outlets, defrost outlets and demist
outlets.
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 CONTROL
(ATC) — I
F EQUIPPED
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 that 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.
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66GETTING TO KNOW YOUR VEHICLE
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 US or
Metric units by selecting the US/Metric
customer-programmable feature within
Uconnect Settings Úpage 237.
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
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
NOTE:
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.
Vacation/Storage
For information on maintaining the Climate
Control system when the vehicle is being stored
for an extended period of time, see
Ú
page 461.
Window Fogging
Vehicle windows tend to fog on the inside in
mild, rainy, and/or humid weather. To clear the
windows, select Defrost or Mix mode and
increase the front blower speed. Do not use the
Recirculation mode without A/C for long
periods, as fogging may occur.
Outside Air Intake
Make sure the air intake, located directly in
front of the windshield, is free of obstructions,
such as leaves. Leaves collected in the air
intake may reduce airflow, and if they enter the
air distribution box, they could plug the water
drains. In Winter months, make sure the air
intake is clear of ice, slush, and snow.

21_DT_OM_EN_USC_t.book Page 66

GETTING TO KNOW YOUR VEHICLE67
Cabin Air Filter
The Climate Control system filters out dust and
pollen from the air. Contact an authorized
dealer to service your cabin air filter, and to
have it replaced when needed.
Stop/Start System — If Equipped
While in an Autostop, the Climate Control
system may automatically adjust airflow to
maintain cabin comfort. Customer settings will
be maintained upon return to an engine running
condition.
Windshield Wiper De-Icer — If Equipped
The windshield wiper de-icer is a heating
element located at the base of the windshield.
It operates automatically once the following
conditions are met:
Activation By Front Defrost
The wiper de-icer activates automatically
during a cold weather manual start with full
defrost, and when the ambient temperature
is below 33°F (0.6°C) .
Activation By Rear Defrost
The wiper de-icer activates automatically
when the Rear Defrost is operating and the
ambient temperature is below 33°F (0.6°C) .
Activation By Remote Start Operation
When the Remote Start is activated and the
outside ambient temperature is less than
33°F (0.6°C) the windshield wiper de-icer is
activated. Upon exiting Remote Start, the
climate control functions will resume their
previous operation except, if the de-icer is
active, the de-icer timer and operation will
continue.
Operating Tips Chart
WEATHER CONTROL
SETTINGS
Hot Weather And
Vehicle Interior Is Very Hot Set the mode control
to (Panel Mode), (A/C) on, and
blower on high. Roll
down the windows for a minute to flush out
the hot air. Adjust the
controls as needed to achieve comfort.
Warm Weather Turn (A/C) on and
set the mode control to the (Panel Mode)position.
Cool Sunny Operate in
(Bi-Level Mode) position.
Cool & Humid Conditions Set the mode control
to (Floor Mode)
position and turn on (A/C) to keep
windows clear.
Cold Weather Set the mode control
to the (Floor
Mode) position. If
windshield fogging
starts to occur, move the control to the (Mix Mode) position.
WEATHER CONTROL
SETTINGS
2

21_DT_OM_EN_USC_t.book Page 67

GETTING TO KNOW YOUR VEHICLE73
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

The third and fourth USB ports are located
behind the center console, above the power
inverter. One of these USBs ports are 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.
If equipped, two Mini-USB ports (Type C), two
Standard USB ports (Type A), and one AUX port
may be located to the left of the center stack,
just below the climate controls.
1 — USB Port #1
2 — AUX Port
3 — USB Port #2
1 — Rear Media USB Ports
2 — Rear Charge Only USB Ports
2

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