Ram 3500 2018 Service Manual

IconDescription
Temperature Control
Press the arrows on the touchscreen or faceplate to regulate the temperature of the air inside the passenger compart-
ment. Pressing the down arrow indicates cooler temperatures, and pressing the up arrow indicates warmer tempera-
tures.
Blower Control
There are seven blower speeds. Press the buttons to regulate the amount of air forced through the system in any mode
you select. The blower speed increases as you move the control clockwise from the off position.
Panel Mode
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
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 conditions to provide cooler air out of the panel outlets and warmer air from
the floor outlets.
Floor Mode
Floor Mode
Air comes from the floor outlets. A slight amount of air is directed through the defrost and side window demister out-
lets.
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IconDescription
Mix Mode
Mix Mode
Air is directed through the floor, defrost, and side window demister outlets. This setting works best in cold or snowy con-
ditions that require extra heat to the windshield. This setting is good for maintaining comfort while reducing moisture on
the windshield.
Economy Mode
If ECONOMY mode is desired, push the A/C
button to turn off the LED indicator and the
A/C compressor. Rotate the temperature con-
trol knob to the desired temperature. Also,
make sure to select only Panel, Bi-Level or
Floor modes.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 instru-
ments, or abrasive window cleaners on
the interior surface of the window.
• Keep all objects a safe distance from
the window.
GETTING TO KNOW YOUR VEHICLE
40

Automatic Climate Controls With A Touchscreen
Uconnect 4C/4C NAV Automatic Climate Controls
41

Automatic Climate Control Knobs
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42

Control Descriptions
NOTE:
Icons and descriptions can vary based upon
vehicle equipment.
IconDescription
MAX A/C Button
Press and release to change the current setting, the indicator illuminates when MAX A/C is on. Performing this function
again will cause the MAX A/C operation to switch into manual mode and the MAX A/C indicator will turn off.
A/C Button
Press and release the button on the touchscreen, or push and release the button on the faceplate, to change the current
setting, the indicator illuminates when A/C is on.
Recirculation Button
Press and release this button to change the system between recirculation mode and outside air mode. Recirculation can
be used when outside conditions such as smoke, odors, dust, or high humidity are present.
NOTE:
• 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.
• The use of the Recirculation mode in cold or damp weather could cause windows to fog on the inside, because of
moisture buildup inside the vehicle. Select the outside air position for maximum defogging.
• Recirculation can be used in all modes except for Defrost.
• The A/C can be deselected manually without disturbing the mode control selection.
AUTO Button — If Equipped
Automatically controls the interior cabin temperature by adjusting airflow distribution and amount. Toggling this
function will cause the system to switch between manual mode and automatic modes. Refer to “Automatic Opera-
tion” for more information.
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IconDescription
Front Defrost Button
Press and release the touchscreen button, or push and release the button on the faceplate, to change the current airflow
setting to Defrost mode. The indicator illuminates when this feature is on. Air comes from the windshield and side win-
dow demist outlets. When the defrost button is selected, the blower level may increase. Use Defrost mode with maxi-
mum temperature settings for best windshield and side window defrosting and defogging. When toggling the front de-
frost mode button, the climate system will return to previous setting.
Rear Defrost Button
Push and release the 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). An indicator will illuminate when the rear window de-
froster is on. The rear window defroster automatically turns off after ten minutes.
Uconnect 3
Uconnect 4C/4C NAV
Driver and Passenger Temperature Up and Down Buttons
Provides the driver and passenger with independent temperature control. Push the up arrow button on the faceplate,
press the up arrow button on the touchscreen, or press and slide the temperature bar towards the red arrow button on
the touchscreen for warmer temperature settings. Push the down arrow button on the faceplate, press the down arrow
button on the touchscreen, or press and slide the temperature bar towards the blue arrow button on the touchscreen for
cooler temperature settings. When the SYNC feature is active, the passenger’s temperature will move up and down with
the driver’s temperature, when it is increased and decreased, respectively.
NOTE:
Temperature numbers will only be displayed if the system is equipped with Automatic Temperature Control.
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44

IconDescription
SYNC Button — If Equipped
Press the SYNC button on the touchscreen to toggle the SYNC feature on/off. The SYNC indicator is illuminated when
this feature is enabled. SYNC is used to synchronize the passenger temperature setting with the driver temperature set-
ting. The SYNC feature also synchronizes the rear passengers’ temperature to the driver temperature setting. Changing
the passenger temperature setting while in SYNC will automatically exit this feature.
Faceplate Knob
Touchscreen Buttons
Blower Control
Blower Control is used to regulate the amount of air forced through the climate system. There are seven blower speeds
available. The speeds can be selected using either the blower control knob on the faceplate or the buttons on the touch-
screen.
• 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. For Uconnect 3, press the button
to access the blower screen and control the blower.
Panel Mode
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
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 conditions to provide cooler air out of the panel outlets and warmer air from
the floor outlets.
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IconDescription
Floor Mode
Floor Mode
Air comes from the floor outlets. A slight amount of air is directed through the defrost and side window demister outlets.
Mix ModeMix Mode
Air is directed through the floor, defrost, and side window demister outlets. This setting works best in cold or snowy con-
ditions 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 this button on the touchscreen, or push the faceplate button, to turn the Climate Control System off.
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 instru- ments, or abrasive window cleaners on
the interior surface of the window.
CAUTION!
• Keep all objects a safe distance from
the window.
Climate Control Functions
A/C (Air Conditioning)
The Air Conditioning (A/C) button allows the
operator to manually activate or deactivate
the air conditioning system. When the air
conditioning system is turned on, cool dehu-
midified air will flow through the outlets into
the cabin. For improved fuel economy, press the A/C button to turn off the air conditioning
and manually adjust the blower and airflow
mode settings. Also, make sure to select only
Panel, Bi-Level, or Floor modes.
NOTE:
• If fog or mist appears on the windshield or
side glass, select Defrost mode, and in-
crease 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 ra-
diator), for an accumulation of dirt or in-
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46

sects. Clean with a gentle water spray from
the front of the radiator and through the
condenser.
MAX A/C
MAX A/C sets the control for maximum cool-
ing performance.
Press and release to toggle between MAX A/C
and the prior settings. The button illuminates
when MAX A/C is on.
In MAX A/C, the blower level and mode posi-
tion can be adjusted to desired user settings.
Pressing other settings will cause the MAX
A/C operation to switch to the selected set-
ting and MAX A/C to exit.
Recirculation
When outside air contains smoke, odors, or
high humidity, or if rapid cooling is desired,
you may wish to recirculate interior air by
pressing the Recirculation control button.
The Recirculation indicator will illuminate
when this button is selected. Press the button
a second time to turn off the Recirculation
mode and allow outside air into the vehicle. NOTE:
In cold weather, use of Recirculation mode
may lead to excessive window fogging. The
Recirculation feature may be unavailable
(button on the touchscreen greyed out) if
conditions exist that could create fogging on
the inside of the windshield.
Automatic Temperature Control
(ATC) — If 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 you would like the system to maintain by adjusting
the driver and passenger temperature
control buttons. Once the desired tem-
perature 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 US/Metric
customer-programmable feature. Refer to
the “Uconnect Settings” in “Multimedia”
in your Owner’s Manual for further
information.
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.
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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.
Operating Tips
Summer Operation
The engine cooling system must be protected
with a high-quality antifreeze coolant to pro-
vide proper corrosion protection and to pro-
tect against engine overheating. OAT coolant
(conforming to MS.90032) is recommended.
Winter Operation
To ensure the best possible heater and de-
froster 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 Recircula-
tion mode during Winter months is not rec-
ommended, because it may cause window
fogging.
Vacation/Storage
Before you store your vehicle, or keep it out of
service (i.e., vacation) for two weeks or more,
run the air conditioning system at idle for
about five minutes, in fresh air with the
blower setting on high. This will ensure ad-
equate system lubrication to minimize the
possibility of compressor damage when the
system is started again.
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 obstruc-
tions, such as leaves. Leaves collected in the
air intake may reduce airflow, and if they
enter the plenum, they could plug the water
drains. In Winter months, make sure the air
intake is clear of ice, slush, and snow.
Cabin Air Filter
The climate control system filters out dust
and pollen from the air. Contact an autho-
rized dealer to service your cabin air filter,
and to have it replaced when needed.
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