2009 DODGE RAM 3500 DIESEL air conditioning

When you press the VR button, you will hear a beep. The
beep is your signal to give a command.
NOTE:If you do not say a command within a few
seconds, the system will present you with a list of
options.
If you ever wish to interrupt the system while it lists
options, press the VR button, listen for the beep, and say
your command.
Pressing the VR button while the system is speaking is
known as “barging in.” The system will be interrupted,
and after the beep, you can add or change commands.
This will become helpful once you start to learn the
options.
NOTE: At any time, you can say the words “Cancel”,
“Help”, or “Main Menu”. These commands are universal and can be used from any
menu. All other commands can be used depending upon
the active application.
For example, if you are in the disc menu and you are
listening to FM radio, you can speak commands from the
disc menu or from the FM radio menu.
When using this system, you should speak clearly and at
a normal speaking volume.
The system will best recognize your speech if the win-
dows are closed, and the heater/air conditioning fan is
set to low.
At any point, if the system does not recognize one of your
commands, you will be prompted to repeat it.
To hear the first available Menu, press the VR button and
say “Help” or “Main Menu”.
UNDERSTANDING THE FEATURES OF YOUR VEHICLE 115
3

▫Using The PTY (Program Type) Button —
If Equipped ........................ 229
▫ PTY Button Scan ................... 230
▫ PTY Button Seek ................... 230
▫ Satellite Antenna ................... 230
▫ Reception Quality ................... 230
 Video Entertainment System (VES)™ —
If Equipped .......................... 231
 Remote Sound System Controls —
If Equipped .......................... 231
▫ Radio Operation .................... 232
▫ CD Player ........................ 232 
CD/DVD Maintenance ................ 232
 Radio Operation And Cellular Phones ...... 233
 Climate Controls ..................... 234
▫ Heater Only — If Equipped ............ 234
▫ Air Conditioning And Heating —
If Equipped ........................ 237
▫ Air Conditioning With Dual Zone
Temperature Control — If Equipped ....... 240
▫ Operating Tips ..................... 244
▫ Operating Tips Chart ................ 246
UNDERSTANDING YOUR INSTRUMENT PANEL 183
4

Air Conditioning and Heating — If EquippedAir Conditioning Operation
To turn on the Air Conditioning, set the fan
control at any speed and press the snowflake
button located at the right of the control panel.
Conditioned air will be directed through the
outlets selected by the mode control. A light in the
snowflake button shows that the air conditioning is on.
Press the button a second time to turn the air condition-
ing off.
Slight changes in engine speed or power may be noticed
when the air conditioning compressor is on. This is a
normal occurrence as the compressor will cycle on and
off to maintain comfort and increase fuel economy.
Air Conditioning And Heating
UNDERSTANDING YOUR INSTRUMENT PANEL 237
4

The mode control (at the right of the
control panel) can be set in any of the
following positions:
NOTE: To improve your selection choices, the system
allows you to operate at intermediate positions between
the major modes. These intermediate positions are iden-
tified by the small dots.
Recirculation Modes (Panel or Bi-Level)
Select the recirculation modes when
the outside air contains smoke, odors,
high humidity, or if rapid cooling is
desired. This feature allows for recir-
culation of interior air only. Air flows
through the panel only, or through both the panel and floor vents depending on the selected
mode (panel vs bi-level).
NOTE:
Selecting a Recirculation Mode does not neces-
sarily consume more fuel than normal A/C mode.
Panel
Outside air flows through the outlets located in the
instrument panel.
Bi-Level
Outside air flows through the outlets located in the
instrument panel and at the floor.
Floor
Outside air flows primarily through the floor out-
lets located under the instrument panel.
Mix
Outside air flows in equal proportions through the
floor and defroster outlets, and the air conditioning
may be on.
238 UNDERSTANDING YOUR INSTRUMENT PANEL

Defrost
Outside air is primarily directed to the windshield
through the defroster outlets located at the base of
the windshield, and the demister outlets located at the
edge of each side of the instrument panel, and the air
conditioning may be on.
NOTE: The air conditioning compressor operates in
both Mix and Defrost or a blend of these modes, even if
the A/C button has not been pressed. This dehumidifies
the air to help dry the windshield.
Blower Control
The rotary knob on the left of the
control panel is the blower control.
Turn the knob clockwise to one of the
four positions to obtain the blower
speed you desire. To turn the blower
off, turn the knob to the far left
position.
Temperature Control
The rotary knob at the center of the
control panel controls the temperature
of the interior air. You can choose your
degree of comfort by rotating the
knob. The coldest temperature setting
is to the extreme left (blue region) and
the warmest setting is to the extreme
right (red region) of the rotation.
CirculationThe cab is designed with features to promote outside air
circulation. There are grilles in the cab back panel. These
are air exhausters that provide the means for regular
exchange of cab air.
Side window demisters direct airflow specifically to the
window glass to help prevent interior fogging of the
glass. They are located in the extreme outside upper
UNDERSTANDING YOUR INSTRUMENT PANEL 239
4

edges of the instrument panel. The demisters also pro-
vide extra air ducts for circulation. They are in operation
whenever the Floor, Mix or Defrost modes are in use. To
remove frost from the side windows, it is best to use the
full defrost mode.
NOTE:When you turn off the engine you may hear a
hissing sound from under the hood for a short period of
time. This is a normal condition that occurs if the air
conditioning system has been on. It is not an indication of
a problem with the air conditioning system.Air Conditioning with Dual Zone Temperature
Control — If EquippedWith the Dual Zone Temperature Control System, each
front seat occupant can independently control the tem-
perature of air coming from the outlets on their side of
the vehicle.
Air Conditioning and Heating OperationTo turn on the Air Conditioning, set the fan control at any
speed and press the snowflake button located on the
control panel. Conditioned air will be directed through
the outlets selected by the mode control. A light in the
snowflake button shows that the air conditioning is on.
Press the button a second time to turn the air condition-
ing off.
Dual Zone Control Head
240 UNDERSTANDING YOUR INSTRUMENT PANEL

A/C Pushbutton
With the fan control in the ON posi-
tion, pushing the A/C button turns on
the air conditioning compressor. An
indicator light on the button shows
that the Air Conditioning compressor
is on. Conditioned air is now directed
through the mode outlets selected.
Pushing the button a second time turns the compressor
OFF.
Recirculation Pushbutton
Pushing the Recirculation button al-
lows interior air to recirculate continu-
ously in any position except defrost
and defrost/floor mode for rapid cool
down of the interior. See “Fast
Cooldown” later in this section.
Mode Control
The mode control allows you to
choose from several patterns of air
distribution.
NOTE: To improve your selection choices, the system
allows you to operate at intermediate positions between
the major modes. These intermediate positions are iden-
tified by the small dots and give an even blend of both
modes.
Panel
Outside air flows through the outlets located in the
instrument panel. These outlets can be adjusted to
direct the airflow.
UNDERSTANDING YOUR INSTRUMENT PANEL 241
4

Bi-Level
Air flows through the outlets located in the instru-
ment panel and those located on the floor.
NOTE: There is a difference in temperature between the
upper and lower outlets for added comfort. The warmer
air goes to the floor outlets. This feature gives improved
comfort during sunny but cool conditions.
Heat
Outside air flows primarily through the floor out-
lets located under the instrument panel.
Mix
Outside air flows in equal proportions through the
floor and defroster outlets.
Defrost
Outside air is primarily directed to the windshield
through the defroster outlets located at the base of
the windshield and side window demist outlets.
NOTE: The air conditioning compressor operates in
both Mix and Defrost or a blend of these modes, even if
the A/C button has not been pressed. This dehumidifies
the air to help dry the windshield.
Blower Control
The rotary knob on the left of the
control panel is the blower control.
Turn the knob clockwise to one of the
four positions to obtain the blower
speed you desire. To turn the blower
off, turn the knob to the far left
position.
242 UNDERSTANDING YOUR INSTRUMENT PANEL