climate control RAM CHASSIS CAB 2021 User Guide

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.

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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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GETTING TO KNOW YOUR VEHICLE61
NOTE:
The numbers within the temperature display
will only appear if the system is equipped
with an automatic climate control system.
Up and down buttons are only available on
vehicles equipped with a 12-inch display.
SYNC Button

Press the SYNC button on the
touchscreen to toggle the SYNC
feature on/off. The SYNC indicator
illuminates when SYNC is on. SYNC
synchronizes the passenger temperature setting
with the driver temperature setting. Changing the
passenger’s temperature setting while in SYNC
will automatically exit this feature.

NOTE:
The SYNC button is only available on the touch -
screen.
Blower Control

Blower Control regulates the amount of
air forced through the climate control
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.

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.
Mode Control

Select Mode by pressing one of the
Mode buttons on the touchscreen,
or pushing the Mode button on the
faceplate, 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.
Faceplate
Push the Mode Button 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
Press one of the “MODE” buttons 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.
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.
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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.
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GETTING TO KNOW YOUR VEHICLE65
CLIMATE VOICE RECOGNITION
Adjust vehicle temperatures hands-free and
keep everyone comfortable while you keep
moving ahead.
Push the VR button on the steering wheel. After
the beep, say one of the following commands:
“Set driver temperature to 70 degrees ”
“Set passenger temperature to 70 degrees ”

Did you know: Voice Command for Climate may only
be used to adjust the interior temperature of your
vehicle. Voice Command will not work to adjust the
heated seats or steering wheel if equipped.

OPERATING TIPS
NOTE:
Refer to the chart at the end of this section for
suggested control settings for various weather
conditions.
Summer Operation
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.
Winter Operation

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 recommended, because it
may cause window fogging.

Vacation/Storage

For information on maintaining the Climate
Control system when the vehicle is being stored
for an extended period of time, see
Ú
page 427.

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 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.
Cabin Air Filter
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.
Operating Tips Chart
WEATHER CONTROL SETTINGS
Hot Weather And
Vehicle Interior Is Very Hot Set the mode control
to , on, and blower on high. Roll down the
windows for a minute to flush out the hot air.
Adjust the controls as needed to achieve comfort.
Warm Weather Turn on and set the
mode control to the position.
Cool Sunny Operate in position.
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GETTING TO KNOW YOUR VEHICLE73
(Continued)
If equipped, two Mini-USB Ports (Type C), two
Standard USB Ports (Type A), and one AUX port
may be located to the left of the center stack,
just below the climate controls.
Center Console USB/AUX Media Hub

Some USB ports support media and charging.
You can use features, such as Apple CarPlay®,
Android Auto™, Pandora®, and others while
charging your phone.
NOTE:

Plugging in a phone or another USB device may
cause the connection to a previous device to be lost.
For further information, refer to the Uconnect
Owner’s Manual Supplement or visit
UconnectPhone.com.
ELECTRICAL POWER OUTLETS
The auxiliary 12 Volt (13 Amp) power outlet can
provide power for in-cab accessories designed
for use with the standard “cigarette lighter”
style plug. The 12 Volt power outlets and 5 Volt
(2.5 Amp) USB port (Charge Only) have a cap
attached to the outlet indicating “12V DC”,
together with either a key symbol, battery
symbol, or USB symbol.
A key symbol indicates that the ignition must be
in the ON/RUN or ACC positions for the outlet to
provide power. The battery symbol indicates
that the outlet is connected to the battery, and
can provide power at all times.
An auxiliary power outlet can be found in the
tray on top of the center stack. This power outlet
works when the ignition is in the ON/RUN, ACC,
or OFF position.

Power Outlet — Top Of Center Stack

1 — Standard USB Type A Ports
2 — Mini-USB Type C Ports
3 — AUX Port
CAUTION!
Do not exceed the maximum power of
160 Watts (13 Amps) at 12 Volts. If the
160 Watts (13 Amps) power rating is
exceeded, the fuse protecting the system
will need to be replaced.
Power outlets are designed for accessory
plugs only. Do not insert any other object in
the power outlets as this will damage the
outlet and blow the fuse. Improper use of
the power outlet can cause damage not
covered by your New Vehicle Limited
Warranty.
CAUTION! (Continued)
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GETTING TO KNOW YOUR VEHICLE75
Certain high-end video game consoles exceed
this power limit, as will most power tools.

All power inverters are designed with built-in
overload protection. If the power rating of 400 Watts
is exceeded, the power inverter shuts down. Once
the electrical device has been removed from the
outlet the inverter should reset.

Rear Center Console Power Inverter Outlet

NOTE:

400 Watts is the maximum for the inverter, not each
outlet. If three outlets are in use, 400 Watts is
shared amongst the devices plugged in.
If equipped, there may be a 115 Volt (400 Watts
Maximum) inverter located to the right of the
center stack, just below the climate controls.
This inverter can power cellular phones,
electronics and other low power devices
requiring power up to 400 Watts. Certain
high-end video game consoles exceed this
power limit, as will most power tools.

Center Stack Power Inverter
To turn on the power outlet, simply plug in the
device. The outlet turns off when the device is
unplugged.
NOTE:
The power inverter only turns on if the ignition
is in the ACC or ON/RUN position.
Due to built-in overload protection, the power
inverter shuts down if the power rating is
exceeded.
WARNING!
To avoid serious injury or death:

Do not insert any objects into the receptacles.

Do not touch with wet hands.
Close the lid when not in use.
If this outlet is mishandled, it may cause an
electric shock and failure.
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SAFETY333
EXHAUST GAS The best protection against carbon monoxide
entry into the vehicle body is a properly
maintained engine exhaust system.

Whenever a change is noticed in the sound of
the exhaust system, when exhaust fumes can
be detected inside the vehicle, or when the
underside or rear of the vehicle is damaged, have
an authorized dealer inspect the complete
exhaust system and adjacent body areas for
broken, damaged, deteriorated, or mispositioned
parts. Open seams or loose connections could
permit exhaust fumes to seep into the passenger
compartment. In addition, inspect the exhaust
system each time the vehicle is raised for
lubrication or oil change. Replace as required.
CARBON MONOXIDE WARNINGS
WARNING!

Exhaust gases can injure or kill. They contain
carbon monoxide (CO), which is colorless
and odorless. Breathing it can make you
unconscious and can eventually poison you.
To avoid breathing (CO), follow these safety tips:

Do not run the engine in a closed garage or
in confined areas any longer than needed
to move your vehicle in or out of the area.
If you are required to drive with the trunk/
liftgate/rear doors open, make sure that all
windows are closed and the climate control
BLOWER switch is set at high speed.
DO NOT use the recirculation mode.
If it is necessary to sit in a parked vehicle
with the engine running, adjust your
heating or cooling controls to force outside
air into the vehicle. Set the blower at high
speed.
WARNING!
Carbon monoxide (CO) in exhaust gases is
deadly. Follow the precautions below to
prevent carbon monoxide poisoning:
Do not inhale exhaust gases. They contain
carbon monoxide, a colorless and odorless
gas, which can kill. Never run the engine in
a closed area, such as a garage, and never
sit in a parked vehicle with the engine
running for an extended period. If the
vehicle is stopped in an open area with
the engine running for more than a short
period, adjust the ventilation system to
force fresh, outside air into the vehicle.
Guard against carbon monoxide with
proper maintenance. Have the exhaust
system inspected every time the vehicle is
raised. Have any abnormal conditions
repaired promptly. Until repaired, drive with
all side windows fully open.
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426SERVICING AND MAINTENANCE
All passenger vehicle tires must conform
to Federal safety requirements in
addition to these grades.
TREADWEAR
The Treadwear grade is a comparative
rating, based on the wear rate of the tire
when tested under controlled conditions
on a specified government test course.
For example, a tire graded 150 would
wear one and one-half times as well
on the government course as a tire
graded 100. The relative performance
of tires depends upon the actual
conditions of their use, however, and
may depart significantly from the norm
due to variations in driving habits,
service practices, and differences in
road characteristics and climate.
TRACTION GRADES
The Traction grades, from highest to
lowest, are AA, A, B, and C. These grades
represent the tire's ability to stop on
wet pavement, as measured under
controlled conditions on specified
government test surfaces of asphalt
and concrete. A tire marked C may
have poor traction performance.
TEMPERATURE GRADES
The Temperature grades are A (the
highest), B, and C, representing the tire's
resistance to the generation of heat and
its ability to dissipate heat, when tested
under controlled conditions on a
specified indoor laboratory test wheel.
Sustained high temperature can cause
the material of the tire to degenerate
and reduce tire life, and excessive
temperature can lead to sudden tire
failure. The grade C corresponds to a level
of performance, which all passenger
vehicle tires must meet under the Federal
Motor Vehicle Safety Standard No. 109.
Grades B and A represent higher levels of
performance on the laboratory test wheel,
than the minimum required by law.

WARNING!
The traction grade assigned to this tire is
based on straight-ahead braking traction
tests, and does not include acceleration,
cornering, hydroplaning, or peak traction
characteristics.WARNING!
The temperature grade for this tire is
established for a tire that is properly inflated
and not overloaded. Excessive speed,
under-inflation, or excessive loading, either
separately or in combination, can cause heat
buildup and possible tire failure.

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