2019 Ram ProMaster heat shield

IconDescription
Recirculation Button
Press and release this button to change the system between recirculation mode and outside air
mode. Recirculation can be used when outside conditions such as smoke, odors, dust, or high
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.
Front Defrost Mode
Turn the Knob to the Front Defrost position. Air comes from the windshield and side window
demist outlets. When the defrost button is selected, the blower level will 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). An indicator will illuminate when the rear window de-
froster is ON. The rear window defroster automatically turns OFF after ten minutes.
Temperature Control
Use this control to regulate the temperature of the air inside the passenger compartment. Rotat-
ing 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.
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GETTING TO KNOW YOUR VEHICLE 47

IconDescription
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.
Additional Rear Climate Control — If Equipped
These switches, mounted on the instrument panel to the
left of the steering column, activate the additional rear
heating/air conditioning system.
NOTE: These switches must be enabled for operation by
the Upfitter.
Additional Rear Climate Controls Switches
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GETTING TO KNOW YOUR VEHICLE 49

•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 radiator and through the condenser.
Recirculation
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. On systems with Manual
Climate Controls, 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.
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. A
solution of 50% OAT (Organic Additive Technology) cool-
ant that meets the requirements of FCA Material Standard
MS.90032 and 50% water is recommended. Refer to “Fluids
And Lubricants” in “Technical Specifications” for proper
coolant selection.
Winter Operation
Use of the air Recirculation mode during winter months is
not recommended because it may cause window fogging.
Vacation Storage
Any time you store your vehicle or keep it out of service
(i.e., vacation) for two weeks or more, run the air condi-
tioning system at idle for about five minutes in the fresh air
and high blower setting. This will ensure adequate system
lubrication to minimize the possibility of compressor dam-
age when the system is started again.
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GETTING TO KNOW YOUR VEHICLE 51

Window Fogging
Interior fogging on the windshield can be quickly removed by
turning the mode selector to Defrost. The Defrost/Floor mode
can be used to maintain a clear windshield and provide
sufficient heating. If side window fogging becomes a problem
increase blower speed. Vehicle windows tend to fog on the
inside in mild but rainy or humid weather.
NOTE:Recirculate without A/C should not be used 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 win-
dow. 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 heat-
ing elements. Labels can be peeled off after soaking
with warm water.
(Continued)
CAUTION! (Continued)
•Do not use scrapers, sharp instruments, or abrasive
window cleaners on the interior surface of the win-
dow.
• Keep all objects a safe distance from the window.
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.
A/C Air Filter
The climate control system filters outside air containing
dust, pollen and some odors. Strong odors cannot be totally
filtered out. Refer to “Dealer Service” in “Servicing and
Maintenance” for filter replacement instructions.
52 GETTING TO KNOW YOUR VEHICLE

CavityMaxi Fuse Mini Fuse Description
F17 –20 Amp Yellow Engine Control Module (ECM), Injectors
(3.6 Gasoline Engine)
F18 –7.5 Amp Brown KL30 Engine Control Module (ECM), KL30
Main Relay Coil (3.6 Gasoline Engine)
F19 –7.5 Amp Brown A/C Compressor — If Equipped
F20 –30 Amp Green Windshield Wiper
F21 –15 Amp Blue Fuel Pump
F22 –20 Amp Yellow Engine Control Module (ECM), Ignition
Coils (3.6 Gasoline Engine)
F23 –20 Amp Yellow Electronic Stability Control (ESC) Valves
F24 –7.5 Amp Brown KL15 Vacuum Pump Relay Coil (3.6 Gaso-
line Engine) — If Equipped
F30 –15 Amp Blue Heated Mirrors
188 IN CASE OF EMERGENCY