2020 Ram ProMaster City air conditioning

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.
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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
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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
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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.
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194 STARTING AND OPERATING
Electronic Range Select (ERS)
• When using the ERS shift control, select the highest gearthat allows for adequate performance and avoids frequent
downshifts. For example, choose “5” if the desired speed
can be maintained. Choose “4” or “3” if needed to main -
tain the desired speed.
• To prevent excess heat generation, avoid continuous driving at high RPM. Reduce vehicle speed as necessary to
avoid extended driving at high RPM. Return to a higher
gear range or vehicle speed when grade and road condi -
tions allow.
Speed Control — If Equipped
• Do not use on hilly terrain or with heavy loads.
• When using the Speed Control, if you experience speed drops greater than 10 mph (16 km/h), disengage until you
can get back to cruising speed.
• Use Speed Control in flat terrain and with light loads to maximize fuel efficiency. Cooling System
To reduce potential for engine and transmission over
-
heating, take the following actions:
City Driving
• In city traffic — while stopped, place the transmission in NEUTRAL, but do not increase engine idle speed.
Highway Driving
• Reduce speed.
• Temporarily turn off air conditioning.
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IN CASE OF EMERGENCY 207
CavityMaxi Fuse Mini Fuse Description
F01 60 Amp Blue –Body Controller
F02 40 Amp Orange –Rear Power Windows, Fog Lamps, Front Heated Seats
(If Equipped)
F02 30 Amp Green –Rear Power Windows, Front Heated Seats (If Equipped)
F02 30 Amp Green –Fog Lamps, Front Heated Seats (If Equipped)
F02 20 Amp Yellow
–Front Heated Seats (If Equipped)
F03 20 Amp Yellow –Ignition Switch
F04 40 Amp Orange –BSM System Module
F06 20 Amp Yellow –Radiator Fan - Low Speed
F07 50 Amp Red –Radiator Fan - High Speed
F08 40 Amp Orange –Blower Motor
F10 –15 Amp Blue Horn
F11 –10 Amp Red Secondary Loads ECM
F14 –15 Amp Blue High Beam
F15 –15 Amp Blue IP Power Outlet 12 Volt
F16 –5 Amp Tan ECM and Transmission Shifter
F17 –25 Amp Clear ECM Power Loads
F18 –5 Amp Tan ECM Load, Main Relay
F19 –7.5 Amp Brown Air Conditioning
6
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SERVICING AND MAINTENANCE 243
Mileage or time passed (whichever comes first)
20,00030,000
40,00050,00060,00070,00080,00090,000
100,000
110,000120,000130,000
140,000150,000
Or Years: 2 3 4 56
7 8 9 10 11 12 13 14 15
Or Kilometers:
32,000 48,000
64,00080,00096,000
112,000 128,000144,000160,000
176,000192,000208,000
224,000240,000
Additional Inspections
Inspect the CV joints. X X X X X X X X X X X X X X
Inspect front suspension, boot seals, tie rod ends,
and replace if necessary. X X X X X X X
Inspect the brake linings, parking brake function. X X X X X X X
Inspect front accessory drive belt, tensioner, idler
pulley, and replace if necessary. X
Additional Maintenance
Replace engine air cleaner filter.
1X XX XX
Replace air conditioning/cabin air filter. X X X X X X X
Change brake fluid every two years.
2X X X X X X X
7
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SERVICING AND MAINTENANCE 251
Air Conditioner Maintenance
For best possible performance, your air conditioner should
be checked and serviced by an authorized dealer at the start
of each warm season. This service should include cleaning of
the condenser fins and a performance test. Drive belt tension
should also be checked at this time.Refrigerant Recovery And Recycling — R–1234yf
R–1234yf Air Conditioning Refrigerant is a hydrofluo-
roolefin (HFO) that is endorsed by the Environmental
Protection Agency and is an ozone-friendly substance with a
low global-warming potential. The manufacturer recom -
mends that air conditioning service be performed by an
authorized dealer using recovery and recycling equipment.
NOTE:
Use only manufacturer approved A/C system PAG
compressor oil, and refrigerants.
WARNING!
• Use only refrigerants and compressor lubricants approved by the manufacturer for your air condi -
tioning system. Some unapproved refrigerants are
flammable and can explode, injuring you. Other unap -
proved refrigerants or lubricants can cause the system
to fail, requiring costly repairs. Refer to Warranty Infor -
mation Book, for further warranty information.
• The air conditioning system contains refrigerant under high pressure. To avoid risk of personal injury or
damage to the system, adding refrigerant or any repair
requiring lines to be disconnected should be done by
an experienced technician.
CAUTION!
Do not use chemical flushes in your air conditioning
system as the chemicals can damage your air
conditioning components. Such damage is not covered
by the New Vehicle Limited Warranty.
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