2023 RAM PROMASTER air conditioning

40GETTING TO KNOW YOUR VEHICLE
The Rain Sensing system has protection features
for the wiper blades and arms, and will not operate
under the following conditions:


Low Ambient Temperature
— When the ignition is
first placed in the ON position, the Rain Sensing
system will not operate until the wiper switch is
moved, vehicle speed is greater than 3 mph
(5 km/h), or the outside temperature is greater
than 32°F (0°C).

Transmission In NEUTRAL Position — When the
ignition is ON, and the automatic transmission
is in the NEUTRAL position, the Rain Sensing
system will not operate until the wiper switch is
moved, vehicle speed is greater than 3 mph
(5 km/h), or the gear selector is moved out of
the NEUTRAL position.
Remote Start Mode Inhibit — On vehicles
equipped with a Remote Start system,
Rain Sensing wipers are not operational when
the vehicle is in the Remote Start mode.
The user can activate the Rain Sensing Wipers in
three ways:
Moving the lever from the O (off) position to the
intermittent positions.
One Mist command actuation.
The vehicle speed exceeds 3 mph (5 km/h) and
the rain sensor detects the presence of rain.
NOTE:In the event of a rain sensor failure, a dedicated
telltale on the instrument cluster will appear to
warn the customer (if equipped).
CLIMATE CONTROLS
The Climate Control system allows you to regulate
the temperature, air flow, and direction of air
circulating throughout the vehicle. The controls are
located on the touchscreen and on the instrument
panel below the radio.
MANUAL CLIMATE CONTROL
D
ESCRIPTIONS AND FUNCTIONS

Uconnect 5 NAV With 10.1-inch Display With Manual
Climate Controls Uconnect 5 With 7-inch Display With Manual Climate
Controls

MAX A/C Button — If Equipped
Press and release the MAX A/C button on
the touchscreen to change the current
setting to the coldest output of air.
The MAX A/C indicator illuminates when
MAX A/C is on. Pressing the button again will cause
the MAX A/C operation to exit.
A/C Button — If Equipped
Push the A/C button to engage the Air
Conditioning (A/C). The A/C indicator
illuminates when A/C is on.

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GETTING TO KNOW YOUR VEHICLE41
NOTE:
For Manual Climate Controls, if the system is
in Mix, Floor or Defrost mode, the A/C can be
turned off, but the A/C system could 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 radiator
and through the condenser.
Recirculation Button

Press and release this button to change the
system between recirculation mode and
outside air mode. The Recirculation indicator
and the A/C indicator illuminate when the
Recirculation button is pressed. 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. Recirculation mode may automatically
adjust to optimize customer experience for warming,
cooling, dehumidification, etc.
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.

MAX Defrost Button

Push the MAX Defrost button to change
the current airflow setting to Defrost mode.
The indicator illuminates when this feature is
on. Max defrost set maximum temperature
setting for best windshield and side window defrosting
and defogging. If MAX Defrost mode is turned off, the
Climate Control system will return to the previous
setting. Air comes from the windshield and side window
demist outlets.

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). The Rear Defrost indicator
illuminates when the rear window defroster is on.
The rear window defroster automatically turns off
after 10 minutes the first time it is activated after
the first key cycle. If the key cycle is engaged again,
the rear window defroster will automatically turn
off 5 minutes after it is activated.
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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GETTING TO KNOW YOUR VEHICLE43
Climate Control OFF Button
Press and release this button to turn the
Climate Control ON/OFF.
ADDITIONAL REAR CLIMATE CONTROL —
I
F 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

Rear Blower Control

Push this button to turn on the rear climate
controls. An indicator light will turn on when
the rear climate control is on.

OPERATING TIPS
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 265.
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.
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.
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GETTING TO KNOW YOUR INSTRUMENT PANEL67
Drowsy Driver Detected Warning Light —
If Equipped
Drowsy driver detection helps to avoid
crashes caused by fatigue by advising
drivers to take a break in time. Once a
Drowsy Driver is detected, A pop-up will
display continuously until the driver presses the
OK button to clear.
Once the pop-up message is cleared, it is stored
until the condition is no longer true.
Electric Power Steering (EPS) Fault
Warning Light
This warning light will turn on when
there's a fault with the EPS system
Ú page 85.
Electronic Throttle Control (ETC) Warning
Light

This warning light will illuminate to inform of
a problem with the ETC system. If a problem
is detected while the vehicle is running, the
light will either stay on or flash depending on
the nature of the problem. Cycle the ignition when
the vehicle is safely and completely stopped and the
transmission is placed in the PARK (P) position.
The light should turn off. If the light remains on with the
vehicle running, your vehicle will usually be drivable;
however, see an authorized dealer for service as soon
as possible.

If the light continues to flash when the vehicle is
running, immediate service is required and you may
experience reduced performance, an elevated/
rough idle, or engine stall and your vehicle may
require towing. The light will come on when the
ignition is placed in the ON/RUN or MAR/ON/RUN
position and remain on briefly as a bulb check. If the
light does not come on during starting, have the
system checked by an authorized dealer.

Engine Temperature Warning Light
This light warns of an overheated
engine condition. If the engine coolant
temperature is too high, this indicator will
illuminate and a single chime will sound.

If the light turns on while driving, safely pull over and
stop the vehicle. If the Air Conditioning (A/C) system is
on, turn it off. Also, shift the transmission into NEUTRAL
and idle the vehicle. If the temperature reading does
not return to normal, turn the engine off immediately
and call for service
Ú
page 216.

Generic Warning Light
The Generic Warning Light will illuminate
to signal the failure of one or more safety
warning lights with a corresponding
message. The safety systems that may
cause the Generic Warning Light to illuminate
include but are not limited too: Seat belt Reminder,
Electric Park Brake, Brakes, Air Bag, and Swivel
Seat failure.
The telltale will remain on in case of swivel seat
failure and will blink in case of Air Bag Warning
Light Failure. Contact an authorized dealer
immediately for service.
WARNING!
Continued operation with reduced assist could
pose a safety risk to yourself and others. Service
should be obtained as soon as possible.
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230SERVICING AND MAINTENANCE
Refrigerant Recovery And Recycling
R-134a Air Conditioning Refrigerant is a Hydrofluo -
rocarbon (HFC) that is an ozone-saving product.
However, the manufacturer recommends that air
conditioning service be performed by authorized
dealer or other service facilities using recovery and
recycling equipment.
NOTE:Use only the manufacturer approved A/C system
PAG compressor oil and refrigerants.
Cabin Air Filter
Refer to the Maintenance Plan in this chapter for
the proper maintenance intervals Ú page 222.The cabin air filter is located in the fresh air inlet in
the engine compartment. Perform the following
procedure to replace the filter:

1. Remove the two screws that secure the filter
retainer to the fresh air inlet, and remove the
filter retainer.

Accessing Air Filter

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
unapproved refrigerants or lubricants can cause
the system to fail, requiring costly repairs. Refer to
Warranty Information Book, for further warranty
information.

The air conditioning system contains refrig -
erant 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.
WARNING!
Do not remove the cabin air filter while the
vehicle is running, or while the ignition is in the
ACC or ON/RUN position. With the cabin air filter
removed and the blower operating, the blower
can contact hands and may propel dirt and
debris into your eyes, resulting in personal injury.
1 — Screw Locations
2 — Fresh Air Inlet

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SERVICING AND MAINTENANCE235
If an examination of your engine compartment
shows no evidence of radiator or hose leaks, the
vehicle may be safely driven. The vapor will soon
dissipate.
Do not overfill the coolant expansion bottle.
Check the coolant freeze point in the radiator
and in the coolant expansion bottle. If engine
coolant needs to be added, the contents of the
coolant expansion bottle must also be protected
against freezing.
If frequent engine coolant additions are
required, the cooling system should be pressure
tested for leaks.
Maintain engine coolant concentration at a
minimum of 50% OAT coolant (conforming to
MS.90032) and distilled water for proper corro -
sion protection of your engine which contains
aluminum components.
Make sure that the coolant expansion bottle
overflow hoses are not kinked or obstructed.
Keep the front of the radiator clean. If your
vehicle is equipped with air conditioning, keep
the front of the condenser clean.
Do not change the thermostat for Summer or
Winter operation. If replacement is ever neces -
sary, install ONLY the correct type thermostat.
Other designs may result in unsatisfactory
engine cooling performance, poor gas mileage,
and increased emissions.
BRAKE SYSTEM
In order to ensure brake system performance, all
brake system components should be inspected
periodically Ú page 222.
Fluid Level Check — Brake Master Cylinder
The fluid level of the master cylinder should be
checked when performing under the hood service
or immediately if the Brake System Warning Light
indicates system failure. If necessary, add fluid to
bring level within the designated marks on the side
of the reservoir of the brake master cylinder. Be
sure to clean the top of the master cylinder area
before removing cap. With disc brakes the fluid
level can be expected to fall as the brake linings
wear. However, an unexpected drop in fluid level
may be caused by a leak and a system check
should be conducted Ú page 273.
WARNING!

Riding the brakes can lead to brake failure and
possibly a collision. Driving with your foot resting or
riding on the brake pedal can result in abnormally
high brake temperatures, excessive lining wear, and
possible brake damage. You would not have your full
braking capacity in an emergency.

WARNING!
Use only the manufacturer recommended
brake fluid Úpage 273. Using the wrong type
of brake fluid can severely damage your brake
system and/or impair its performance. The
proper type of brake fluid for your vehicle is
also identified on the original factory installed
hydraulic master cylinder reservoir.
To avoid contamination from foreign matter or
moisture, use only new brake fluid or fluid that
has been in a tightly closed container. Keep
the master cylinder reservoir cap secured at
all times. Brake fluid in an open container
absorbs moisture from the air resulting in a
lower boiling point. This may cause it to boil
unexpectedly during hard or prolonged
braking, resulting in sudden brake failure.
This could result in a collision.
Overfilling the brake fluid reservoir can result
in spilling brake fluid on hot engine parts,
causing the brake fluid to catch fire. Brake
fluid can also damage painted and vinyl
surfaces, care should be taken to avoid its
contact with these surfaces.

Do not allow petroleum-based fluid to contami -
nate the brake fluid. Brake seal components could
be damaged, causing partial or complete brake
failure. This could result in a collision.

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SERVICING AND MAINTENANCE265
TEMPERATURE GRADES
The Temperature grades are A (the
highest), B, and C, representing the tire's
resistance to the generation of heat
and its ability to dissipate heat, when
tested under controlled conditions on a
specified indoor laboratory test wheel.

Sustained high temperature can cause the
material of the tire to degenerate and
reduce tire life, and excessive temperature
can lead to sudden tire failure. The grade C
corresponds to a level of performance,
which all passenger vehicle tires must meet
under the Federal Motor Vehicle Safety
Standard No. 109. Grades B and A
represent higher levels of performance on
the laboratory test wheel, than the minimum
required by law.
STORING THE VEHICLE
If you are storing your vehicle for more than
3 weeks, we recommend that you take the
following steps to minimize the drain on your
vehicle's battery:
Disconnect the negative cable from the battery.
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 the fresh air and high blower
setting prior to storing. This will ensure
adequate system lubrication to minimize the
possibility of compressor damage when the
system is started again.
BODYWORK
PROTECTION FROM ATMOSPHERIC
A
GENTS
Vehicle body care requirements vary according to
geographic locations and usage. Chemicals that
make roads passable in snow and ice and those
that are sprayed on trees and road surfaces during
other seasons are highly corrosive to the metal in
your vehicle. Outside parking, which exposes your
vehicle to airborne contaminants, road surfaces on
which the vehicle is operated, extreme hot or cold
weather, and other extreme conditions will have an
adverse affect on paint, metal trim, and underbody
protection.
The following maintenance recommendations will
enable you to obtain maximum benefit from the
corrosion resistance built into your vehicle.
What Causes Corrosion?
Corrosion is the result of deterioration or removal
of paint and protective coatings from your vehicle.
The most common causes are:
Road salt, dirt and moisture accumulation
Stone and gravel impact
Insects, tree sap and tar
Salt in the air near seacoast localities
Atmospheric fallout/industrial pollutants
WARNING!
The traction grade assigned to this tire is based
on straight-ahead braking traction tests, and
does not include acceleration, cornering,
hydroplaning, or peak traction characteristics.
WARNING!

The temperature grade for this tire is established for
a tire that is properly inflated and not overloaded.
Excessive speed, underinflation, or excessive
loading, either separately or in combination, can
cause heat buildup and possible tire failure.

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283
INDEX
A
Active Driving Assist....................................... 100Active Speed Limiter........................................ 86Adaptive Cruise Control (ACC)
(Cruise Control)................................................ 87Adding Engine Coolant (Antifreeze)............... 233Adding Washing Fluid.................................... 226Additives, Fuel............................................... 271Air Bag........................................................... 179Air Bag Operation...................................... 180Air Bag Warning Light................................ 178Enhanced Accident Response...................220Event Data Recorder (EDR)....................... 220If Deployment Occurs................................ 183Maintaining Your Air Bag System.............. 184Maintenance............................................. 184Side Air Bags............................................. 180Transporting Pets...................................... 190Air Bag Light..................................65, 178, 190Air Cleaner, Engine (Engine Air
Cleaner Filter)...................................... 228, 229Air Conditioner Maintenance......................... 229Air Conditioner Refrigerant.................. 229, 230Air Conditioner System.................................. 229Air Conditioning Filter............................. 43, 230Air Conditioning, Operating Tips................ 43, 44
Air Filter........................................................ 228Air PressureTires......................................................... 256AlarmSecurity Alarm...................................... 20, 68Alarm SystemSecurity Alarm............................................. 20Alterations/ModificationsVehicle........................................................... 8Antifreeze (Engine Coolant)................. 233, 273Disposal................................................... 234Anti-Lock Brake System (ABS)...................... 152Anti-Lock Warning Light................................... 68Assist, Hill Start............................................. 155Audio Systems (Radio).................................. 133Auto Down Power Windows............................. 49Auto Up Power Windows.................................. 49Automatic Door Locks...................................... 23Automatic Headlights....................................... 34Automatic High Beams.................................... 34Automatic Transmission.........................81, 236Adding Fluid.............................................. 236Fluid And Filter Change............................ 236Fluid Change............................................ 236Fluid Level Check..................................... 236
Fluid Type........................................ 236, 274Special Additives...................................... 236AUX Cord..........................................................45Auxiliary Driving Systems.............................. 158
B
Base / Midline Instrument Cluster
S
............53Battery................................................... 66, 227Charging System Light.................................66Keyless Key Fob Replacement....................14Belts, Seat.................................................... 190Blind Spot Monitoring................................... 158Body Builders Guide........................................... 8Body Mechanism Lubrication........................ 231B-Pillar Location............................................ 253Brake Assist System..................................... 153Brake Control System, Electronic.................. 153Brake Fluid........................................... 235, 274Brake System....................................... 235, 269Anti-Lock (ABS)......................................... 152Fluid Check............................................... 235Master Cylinder........................................ 235Parking........................................................78Warning Light...............................................6611

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