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2020 RAM 2500 Owners Manual - CLIMATE CONTROLS



CLIMATE CONTROLS

The Climate Control system allows you to regu- late the temperature, air flow, and direction of air circulating throughout the vehicle. The

controls are located on the touchscreen (if 2 equipped), on the sides of the touchscreen, or on the instrument panel below the radio.

Manual Climate Controls

Icon

Description

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 the 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 pushed. 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

Temperature Control regulates the temperature of the air forced through the Climate Control 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.

 

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Description

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 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.

Climate Control OFF

To turn the Climate Controls off, turn the Blower Control knob to the O (off) position.

Uconnect 4/4C/4C NAV With 8.4–inch Display Automatic Temperature Controls

Uconnect 4C NAV With 12–inch Display Automatic Temperature Controls

Icons and descriptions can vary based upon vehicle equipment.

Icon

Description

Faceplate Auto Button

Touchscreen Auto Button

AUTO

Press and release this button on the touchscreen, or push the button on the faceplate, to change the current setting. The AUTO indicator illuminates when AUTO is on. This feature 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 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 previous setting.

Rear Defrost Button

Push 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.

 

Icon

Description

Faceplate Blower Knob

Touchscreen Blower Buttons

Blower Control

Blower Control regulates 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 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.

NOTE:

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

Faceplate Mode Button

Touchscreen Mode Buttons

Mode Control

Mode Control regulates the airflow distribution. The airflow distribution outlets are: instrument panel outlets, floor outlets, defrost outlets, and demist outlets. Faceplate: Push the Mode Button to change the airflow distribution mode.

Touchscreen: Press one of the “MODE” buttons to change the airflow distribution mode. The Mode settings are as follows:

 

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 condi- tioning system is turned on, cool dehumidified 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 manu- ally adjust the blower and airflow mode settings. Also, make sure to select only Panel, Bi-Level, or Floor modes.

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.

MAX A/C sets the control for maximum cooling 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 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 Recircu- lation feature may be unavailable (button on the touchscreen greyed out) if conditions 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.

Automatic Operation

Push the AUTO button on the faceplate, or the AUTO button on the touchscreen on the Automatic Temperature 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 temperature is displayed, the system will achieve and auto- matically 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 function automatically.
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 customer-programmable feature. Refer to the “Uconnect Settings” in “Multimedia” 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.

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.

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 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 recom- mended, 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 lubri-cation 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 2 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.

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.

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 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.

WINDOWS

Power Windows

Power Window Controls

Power Window Switches


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