2021 RAM CHASSIS CAB window

42GETTING TO KNOW YOUR VEHICLE
Automatic Dimming Mirror — If Equipped
The mirror head can be adjusted up, down, left,
and right. The mirror should be adjusted to
center on the view through the rear window.
This mirror automatically adjusts for headlight
glare from vehicles behind you.
NOTE:
The Automatic Dimming feature is disabled
when the vehicle is in REVERSE to improve rear
view viewing.
The Automatic Dimming feature can be turned
on or off through the touchscreen.

Automatic Dimming Mirror

Automatic Dimming Mirror With Rear View
Camera Display — If Equipped
A single ball joint mirror is provided in the
vehicle. It is a twist on mirror that has a fixed
position at the windshield. The mirror installs on
the windshield button with a counterclockwise
rotation and requires no tools for mounting.
The mirror head can be adjusted up, down, left,
and right for various drivers. The mirror should
be adjusted to center on the view through the
rear window.
This mirror automatically adjusts for headlight
glare from vehicles behind you.
When the vehicle is placed into reverse gear, a
video display illuminates to display the image
generated by the rear view camera (for the 3500,
4500, and 5500 Chassis Cab vehicles, the Rear
Backup Camera is shipped loose and not
installed. Please refer to the Ram Body Builders
Guide for more information). The auto dimming
feature is also disabled to improve rear view
viewing.
Automatic Dimming Mirror With Rear View Camera

CAUTION!
To avoid damage to the mirror during
cleaning, never spray any cleaning solution
directly onto the mirror. Apply the solution
onto a clean cloth and wipe the mirror clean.

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GETTING TO KNOW YOUR VEHICLE43
Digital Rearview Mirror — If Equipped
The Digital Rearview Mirror provides a high
definition, wide and unobstructed view of the
road behind while driving.
To activate the Digital Rearview Mirror, push the
control on the bottom of the mirror forward.

Digital Rearview Mirror
Push the menu button next to the on/off control
to access the following mirror options:
Brightness
Tilt
Use the left and right buttons to scroll through
menu options.
When not in use, pull the on/off control back
toward the steering wheel to return the mirror to
the regular Automatic Dimming Mirror.
NOTE:

The Digital Rearview Mirror is not as effective
during night time driving in low light applications.

ILLUMINATED VANITY MIRROR — IF
E
QUIPPED
Illuminated vanity mirrors are located on each
sun visor. To use the mirror, rotate the sun visor
down and swing the mirror cover upward. The lights will turn on automatically. Closing the
mirror cover turns off the light.

Lift Cover For Illuminated Mirror

“Slide-On-Rod” Features Of Sun Visor — If
Equipped
The sun visor “Slide-On-Rod” feature allows for
additional flexibility in positioning the sun visor
to block out the sun.

1. Fold down the sun visor.

2. Unclip the visor from the corner clip.
3. Pivot the sun visor toward the side window.
1 — On/Off Control
2 — Menu Button
3 — Left Scroll Button
4 — Right Scroll Button
2

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46GETTING TO KNOW YOUR VEHICLE
TRAILER TOWING MIRRORS
These mirrors are designed with an adjustable
mirror head to provide a greater vision range
when towing extra-wide loads. To change
position inboard or outboard, the mirror head
should be rotated (flipped in or out).

Trailer Towing Position

NOTE:
Fold the trailer towing mirrors rearward prior to
entering an automated car wash.
A small blindspot mirror is located next to the
main mirror and can be adjusted manually.
Blindspot Mirror

HEATED MIRRORS — IF EQUIPPED
These mirrors are heated to melt frost
or ice. This feature will be activated
whenever you turn on the rear window
defroster (if equipped) Ú
page 58.
TILT SIDE MIRRORS IN REVERSE — IF
E
QUIPPED
This feature provides automatic outside mirror
positioning which will assist with the driver’s
ground visibility. The outside mirrors will move
slightly downward from the present position
when the vehicle is shifted into REVERSE. The outside mirrors will then return to the
original position when the vehicle is shifted out
of REVERSE. If the vehicle is equipped with
Driver Memory Settings, this feature will be
linked to the programmable settings.
NOTE:
The Tilt Side Mirrors In Reverse feature can be
turned on and off using the Uconnect system
Ú
page 228.
OUTSIDE MIRRORS FOLDING FEATURE
All outside mirrors are designed to be able to be
manually folded both forward and rearward to
prevent damage.

Folding Mirror

21_DPF_OM_EN_USC_t.book Page 46

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

Uconnect 4/4C/4C NAV With 8.4–inch Display
Automatic Temperature Controls
Uconnect 4C 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.
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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60GETTING TO KNOW YOUR VEHICLE
(Continued)
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 64.
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 10 minutes.

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.
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.
CAUTION! (Continued)

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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.

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GETTING TO KNOW YOUR VEHICLE63
Attempting to use Recirculation while in this
mode causes the LED in the control button to
link, 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
10 minutes.

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.
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.
2

21_DPF_OM_EN_USC_t.book Page 63

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.

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