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2019 RAM 2500 Owners Manual - CLIMATE CONTROLS



CLIMATE CONTROLS

The Climate Control System allows you to regulate the temperature, air flow, and direction of air circulating throughout the vehicle. The controls are located on the touchscreen (if equipped), on the sides of the touchscreen, or on the instrument panel below the radio.

obtain desired interior conditions.

Manual Climate Controls

Icon

Description

MAX A/C Setting

Rotate the temperature control knob until it is set to MAX A/C. This is the coldest setting and puts the

A/C to maximum power.

A/C Button

Push the A/C button to engage the Air Conditioning (A/C). A LED will illuminate when the A/C

system is engaged.

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. 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.

Temperature Control

Use this control knob to regulate the temperature of the air inside the passenger compartment. Rotating the knob counterclockwise, from top center into the blue area of the scale, indicates cooler

temperatures. Rotating the knob clockwise, into the red area, indicates warmer temperatures.

Blower Control

There are seven blower speeds. Use this control knob 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.

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Description

Mix Mode

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.

Front Defrost Setting

Turn the Mode Control knob to the Defrost mode. Air comes from the windshield and side window demist outlets. Use Defrost mode with maximum temperature settings for best windshield and side

window defrosting and defogging.

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 illuminates when the rear window defroster is on. The rear window defroster turns off after a short

period of time.

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 control knob to the desired temperature. Also, make sure to select only Panel, Bi-Level or Floor modes.

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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 equip- ment.

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Icon

Description

AUTO Control Knob

AUTO Button

AUTO

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 Operation” within this section for more information.

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 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 previous setting.

Rear Defrost Button

Press 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 defroster is on. The rear window defroster automatically turns off

after ten minutes.

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Icon

Description

Blower Control Knob

Blower Control

Blower Control is used to regulate the amount of air forced through the climate 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.

Blower Control Buttons

    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 counter- clockwise.

    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.

NOTE:

On Uconnect 4C NAV With 12–inch display radios, pressing the blower control button below one turns the Climate Control system OFF.

Mode Control Knob

Mode Controls Button

Modes Control

Control Knob: Push the Mode Control Knob 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.

Touchscreen: Select Mode by pressing one of the Mode buttons on the touchscreen 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.

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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:

    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 radiator), for an accumulation of dirt or insects. Clean with a gentle water spray from the front of the radi- ator and through the condenser.

MAX A/C

MAX A/C sets the control for maximum cooling perfor- mance.

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 position can be adjusted to desired user settings. Pressing other settings will cause the MAX A/C operation to switch to the selected setting and MAX A/C to exit.

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 condi- tions exist that could create fogging on the inside of the windshield.

On systems with Manual Climate Controls, if equipped, the Recirculation mode is not allowed in Defrost mode to improve window clearing 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 turns off.

    Push the AUTO button on the faceplate, or the AUTO

    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” for further information.

button on the touchscreen on the Automatic Temperature

To provide you with maximum comfort in the Automatic 2

Control (ATC) Panel.

    Next, adjust the temperature you would like the system to maintain by adjusting the driver and passenger temperature control buttons. Once the desired tempera- ture is displayed, the system will achieve and automati- cally maintain that comfort level.
    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 func- tion 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.

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.

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.

NOTE:

Refer to the chart at the end of this section for suggested control settings for various weather conditions.

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.

To ensure the best possible heater and defroster perfor- mance, 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.

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 adequate system lubrication to minimize the possibility of compressor damage when the system is started again.

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.

Make sure the air intake, located directly in front of the wind- shield, is free of obstructions, such as leaves. Leaves collected

in the air intake may reduce airflow, and if they enter the 2

plenum, they could plug the water drains. In Winter months, make sure the air intake is clear of ice, slush, and snow.

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.


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