2020 Ram ProMaster City air condition

7
DEALER SERVICE ........................................................... 248
Engine Oil ................................................................... 248
Engine Oil Filter ......................................................... 250
Engine Air Cleaner Filter ......................................... 250
Air Conditioner Maintenance ................................. 251
Body Lubrication ....................................................... 252
Windshield Wiper Blades ......................................... 252
Exhaust System ........................................................... 253
Cooling System .......................................................... 255
Brake System ............................................................... 260
Power Steering Fluid................................................... 261
Automatic Transmission ........................................... 261
Upfitter Connectors — If Equipped.......................... 263
 RAISING THE VEHICLE ............................................... 266
 TIRES................................................................................... 266
Tire Safety Information ............................................ 266
Tires — General Information .................................... 276
Tire Types ..................................................................... 282
Spare Tires — If Equipped ....................................... 283
Wheel And Wheel Trim Care ................................. 285
Tire Chains (Traction Devices) ................................. 287
Tire Rotation Recommendations ............................... 287 
DEPARTMENT OF TRANSPORTATION UNIFORM
TIRE QUALITY GRADES ...............................................288
Treadwear .....................................................................288
Traction Grades............................................................ 289
Temperature Grades ................................................... 289
 STORING THE VEHICLE .............................................289
 BODYWORK ......................................................................290
Protection From Atmospheric Agents ....................290
Body And Underbody Maintenance .........................290
Preserving The Bodywork .......................................... 291
 INTERIORS .......................................................................292
Seats And Fabric Parts ................................................292
Plastic And Coated Parts ............................................292
Leather Parts.................................................................293
Glass Surfaces ..............................................................293
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 7

54 GETTING TO KNOW YOUR VEHICLE
Manual Climate Control DescriptionsIcon Description
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. The A/C can be deselected manually without disturbing the mode control
selection.
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. 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.
Rear Defrost Button — If Equipped
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 defroster is on. The
rear window defroster automatically turns OFF after 20 minutes.
Temperature Control
Use this control 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.
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 54

GETTING TO KNOW YOUR VEHICLE 55
Blower Control
There are four blower speeds. Use this control 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.
Modes Control
Rotate this control 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.
Icon
Description
2
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 55

56 GETTING TO KNOW YOUR VEHICLE
System Maintenance
In Winter, the Climate Control system must be turned on at
least once a month for about 10 minutes.
Have the system inspected at an authorized dealer before the
Summer.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
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.
Front Defrost
Use Defrost mode with maximum temperature settings for best windshield and side window
defrosting and defogging. Turn the knob to the Front Defrost position. Air comes from the windshield
and side window demist outlets.
Icon
Description
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 56

GETTING TO KNOW YOUR VEHICLE 57
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 orDefrost 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.
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. The recirculation mode is not
allowed in Defrost mode to improve window clearing oper -
ation. 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.
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. Organic
Additive Technology (OAT) coolant (conforming to MS.90032)
is recommended. Refer to “Fluids And Lubricants” in “Tech
-
nical Specifications” for proper coolant selection.

2
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 57

58 GETTING TO KNOW YOUR VEHICLE
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. Refer to “Fluids And Lubricants” in “Tech -
nical Specifications” for proper coolant selection. Use of the
air recirculation mode during Winter months is not recom -
mended 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 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 of the glass in mild,
rainy and/or humid weather. Windows may frost on the inside
of the glass in very cold weather. To clear the windows, select
Defrost or Mix mode and increase the front blower speed. Do
not use the Recirculation mode without Air Conditioning (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.
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 58

GETTING TO KNOW YOUR VEHICLE 59
Outside Air Intake
Make sure the air intake, located directly in front of the wind-
shield, is free of obstructions such as leaves. Leaves collected
in the air intake may reduce airflow, can cause odor, 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.
Cool & Humid Conditions Set the mode control to
position and turn on to keep windows clear.
Cold Weather Set the mode control to the
position. If windshield
fogging starts to occur,
move the control to the position.
2
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 59

76 GETTING TO KNOW YOUR INSTRUMENT PANEL
Instrument Cluster Descriptions
1. Speedometer• Indicates vehicle speed.
2. Fuel Gauge
• The pointer shows the level of fuel in the fuel tankwhen the ignition switch is in the ON/RUN position.
• The fuel pump arrow symbol points to the side of the vehicle where the fuel door is located.
3. Temperature Gauge

• The temperature gauge shows engine coolant tempera-ture. Any reading within the normal range indicates that
the engine cooling system is operating satisfactorily.

• The pointer will likely indicate a higher temperature when driving in hot weather or up mountain grades. It
should not be allowed to exceed the upper limits of the
normal operating range.
WARNING!
A hot engine cooling system is dangerous. You or others
could be badly burned by steam or boiling coolant. You
may want to call an authorized dealer for service if your
vehicle overheats. If you decide to look under the hood
yourself, refer to “Cooling System Pressure Cap” in
“Servicing And Maintenance” and follow the warnings
under the Cooling System Pressure Cap paragraph.
CAUTION!
Driving with a hot engine cooling system could damage
your vehicle. If the temperature gauge reads “H,” pull
over and stop the vehicle. Idle the vehicle with the air
conditioner turned off until the pointer drops back into
the normal range. If the pointer remains on the “H,” turn
the engine off immediately and call an authorized dealer
for service.
2020_RAM_PROMASTER_CITY_OM_USA=GUID-7B6A7FCA-79B0-423F-95C5-ED2A949C3D13=1=en=.book Page 76