2021 RAM 1500 climate settings

66GETTING TO KNOW YOUR VEHICLE
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 US or
Metric units by selecting the US/Metric
customer-programmable feature within
Uconnect Settings Úpage 237.
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.
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.
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 461.
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
air distribution box, they could plug the water
drains. In Winter months, make sure the air
intake is clear of ice, slush, and snow.

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GETTING TO KNOW YOUR VEHICLE67
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.
Stop/Start System — If Equipped
While in an Autostop, the Climate Control
system may automatically adjust airflow to
maintain cabin comfort. Customer settings will
be maintained upon return to an engine running
condition.
Windshield Wiper De-Icer — If Equipped
The windshield wiper de-icer is a heating
element located at the base of the windshield.
It operates automatically once the following
conditions are met:
Activation By Front Defrost
The wiper de-icer activates automatically
during a cold weather manual start with full
defrost, and when the ambient temperature
is below 33°F (0.6°C) .
Activation By Rear Defrost
The wiper de-icer activates automatically
when the Rear Defrost is operating and the
ambient temperature is below 33°F (0.6°C) .
Activation By Remote Start Operation
When the Remote Start is activated and the
outside ambient temperature is less than
33°F (0.6°C) the windshield wiper de-icer is
activated. Upon exiting Remote Start, the
climate control functions will resume their
previous operation except, if the de-icer is
active, the de-icer timer and operation will
continue.
Operating Tips Chart
WEATHER CONTROL
SETTINGS
Hot Weather And
Vehicle Interior Is Very Hot Set the mode control
to (Panel Mode), (A/C) 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 (A/C) on and
set the mode control to the (Panel Mode)position.
Cool Sunny Operate in
(Bi-Level Mode) position.
Cool & Humid Conditions Set the mode control
to (Floor Mode)
position and turn on (A/C) to keep
windows clear.
Cold Weather Set the mode control
to the (Floor
Mode) position. If
windshield fogging
starts to occur, move the control to the (Mix Mode) position.
WEATHER CONTROL
SETTINGS
2

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STARTING AND OPERATING151
ENGINE BREAK-IN RECOMMENDATIONS —
DIESEL ENGINE
The diesel engine does not require a break-in
period due to its construction. Normal operation
is allowed, providing the following
recommendations are followed:
Warm up the engine before placing it under
load.
Do not operate the engine at idle for
prolonged periods.
Observe vehicle oil pressure and tempera -
ture indicators.
Check the coolant and oil levels frequently.
Vary throttle position at highway speeds
when carrying or towing significant weight.
NOTE:
Light duty operation such as light trailer towing
or no load operation will extend the time before
the engine is at full efficiency. Reduced fuel
economy and power may be seen at this time.
The engine oil installed in the engine at the
factory is a high-quality energy conserving type
lubricant. Oil changes should be consistent with anticipated climate conditions under which
vehicle operations will occur. For the
recommended viscosity and quality grades
Ú
page 475.
NOTE:
NON-DETERGENT OR STRAIGHT MINERAL OILS
MUST NEVER BE USED.
PARKING BRAKE
ELECTRIC PARK BRAKE (EPB)
Your vehicle is equipped with an EPB that offers
simple operation, and some additional features
that make the parking brake more convenient
and useful.
The parking brake is primarily intended to
prevent the vehicle from rolling while parked.
Before leaving the vehicle, make sure that the
parking brake is applied. Also, be certain to
leave the transmission in PARK.
You can engage the parking brake in two ways:
Manually, by applying the parking brake
switch.
Automatically, by enabling the Auto Park
Brake feature in the customer programmable
features section of the Uconnect settings. The parking brake switch is located on the
instrument panel to the left of the steering
wheel (below the headlamp switch).

Electric Park Brake Switch

To apply the parking brake manually, pull up on
the switch momentarily. You may hear a slight
sound from the back of the vehicle while the
parking brake engages. Once the park brake is
fully engaged, the BRAKE telltale light in the
instrument cluster and an indicator on the
switch will illuminate. If your foot is on the brake
pedal while you apply the parking brake, you
may notice a small amount of brake pedal
movement. The parking brake can be applied
even when the ignition switch is OFF but the
BRAKE telltale light will not illuminate, however,
it can only be released when the ignition is in
the ON/RUN mode.
4

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STARTING AND OPERATING175
FUEL SAVER TECHNOLOGY 5.7L ENGINES
ONLY — IF EQUIPPED
This feature offers improved fuel economy by
shutting off four of the engine's eight cylinders
during light load and cruise conditions. The
system is automatic with no driver inputs or
additional driving skills required.
NOTE:
This system may take some time to return to full
functionality after a battery disconnect.
STOP/START SYSTEM — IF EQUIPPED
The Stop/Start function is developed to save
fuel and reduce emissions. The system will stop
the engine automatically during a vehicle stop if
the required conditions are met. Releasing the
brake pedal or shifting out of DRIVE will
automatically restart the engine.
Vehicles equipped with eTorque contain a
heavy duty motor generator and an additional
hybrid electric battery to store energy from
vehicle deceleration for use on engine startup
after a stop as well as providing launch torque
assist.
AUTOSTOP MODE

The Stop/Start feature is enabled after every
normal customer engine start. It will remain in
STOP/START NOT READY until you drive
forward with a vehicle speed greater than
2 mph (3 km/h). At that time, the system will
go into STOP/START READY.

To Activate The Autostop Mode, The Following
Must Occur:

1. The system must be in STOP/START READY
state. A STOP/START READY message will
be displayed in the instrument cluster
within the Stop/Start section
Ú
page 114.

2. The vehicle must be completely stopped.
3. The transmission gear selector must be in DRIVE and the brake pedal pressed.
The engine will shut down, the tachometer will
move to the zero position and the stop/start
telltale will illuminate indicating you are in an
Autostop. While in an Autostop, the Climate
Controls system may automatically adjust
airflow to maintain cabin comfort. Customer
settings will be maintained upon return to an
engine running condition.
POSSIBLE REASONS THE ENGINE DOES
N
OT AUTOSTOP
Prior to engine shut down, the system will check
many safety and comfort conditions to see if
they are fulfilled. In following situations, the
engine will not Autostop:
Driver’s seat belt is not buckled
Driver’s door is not closed
The vehicle is on a steep grade
Cabin heating or cooling is in process and an
acceptable cabin temperature has not been
achieved
HVAC is set to full defrost mode at a high
blower speed
Engine has not reached normal operating
temperature
Engine temperature too high
The battery is charging
The transmission is not in DRIVE
Hood is open
Transfer case is in 4WD LOW
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