def Ram 2500 2019 User Guide

76 GETTING TO KNOW YOUR VEHICLE
Illuminated Entry
The courtesy lights will turn on when you use the key fob to
unlock the doors or open any door.
This feature also turns on the puddle lamps located beneath
the outside mirrors (if equipped).
The lights will fade to off after approximately 30 seconds, or
they will immediately fade to off once the ignition switch is
turned to ON/RUN from the OFF position.
The front courtesy overhead console and door courtesy
lights will not turn off if the Dome On button on the over-
head console is pushed.
The illuminated entry system will not operate if the Dome
Defeat button on the overhead console is pushed.
NOTE:
If your vehicle is equipped with Illuminated Approach lights
under the outside mirrors, they can also be turned off by
pushing the Dome Defeat button.
WINDSHIELD WIPERS AND WASHERS
Windshield Wipers
The wipers and washers are operated by a switch in the
multifunction lever. Turn the end of the lever to select the
desired wiper speed.
Windshield Wiper/Washer Switch
Rotate the end of the lever upward, to the first detent past the
intermittent settings for low-speed wiper operation. Rotate
the end of the lever upward to the second detent past the
intermittent settings for high-speed wiper operation.

GETTING TO KNOW YOUR VEHICLE 77
Intermittent Wiper System
The intermittent feature of this system was designed for use
when weather conditions make a single wiping cycle, with a
variable pause between cycles, desirable. For maximum
delay between cycles, rotate the control knob upward to the
first detent.
The delay interval decreases as you rotate the knob until it
enters the low continual speed position. The delay can be
regulated from a maximum of about 18 seconds between
cycles, to a cycle every one second. The delay intervals will
double in duration when the vehicle speed is 10 mph
(16 km/h) or less.
Windshield Washers
To use the windshield washer, push the washer knob,
located on the end of the multifunction lever, inward to the
second detent. Washer fluid will be sprayed and the wiper
will operate for two to three cycles after the washer knob is
released from this position.If the washer knob is depressed while in the delay range, the
wiper will operate for several seconds after the washer knob
is released. It will then resume the intermittent interval
previously selected. If the washer knob is pushed while in
the off position, the wiper will turn on and cycle approxi
-
mately three times after the wash knob is released.
To prevent freeze-up of your windshield washer system in
cold weather, select a solution or mixture that meets or
exceeds the temperature range of your climate. This rating
information can be found on most washer fluid containers.
WARNING!
Sudden loss of visibility through the windshield could
lead to a collision. You might not see other vehicles or
other obstacles. To avoid sudden icing of the windshield
during freezing weather, warm the windshield with the
defroster before and during windshield washer use.
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80 GETTING TO KNOW YOUR VEHICLE
Manual Climate Control DescriptionsIcon 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.

GETTING TO KNOW YOUR VEHICLE 81
Mode Control
Rotate 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. The Mode settings are as follows:
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 outlets.
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Description
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82 GETTING TO KNOW YOUR VEHICLE
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.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.
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Description

86 GETTING TO KNOW YOUR VEHICLE
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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Description

88 GETTING TO KNOW YOUR VEHICLE
Blower Control Knob
Blower Control Buttons 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.
•
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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Description

GETTING TO KNOW YOUR VEHICLE 89
Panel Mode Panel ModeAir 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 outlets.
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.
Climate Control OFF Button
This button turns the Climate Control System off.
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Description
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90 GETTING TO KNOW YOUR VEHICLE
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:
• For Manual Climate Controls, if the system is in Mix, Flooror 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.
Recirculation
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.

92 GETTING TO KNOW YOUR VEHICLE
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 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.
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 adequate 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.
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.