cooling RAM PROMASTER 2023 User Guide

226SERVICING AND MAINTENANCE
(Continued)
CHECKING OIL LEVEL
To ensure proper engine lubrication, the engine oil
must be maintained at the correct level. Check the
oil level at regular intervals, such as every fuel
stop. The best time to check the engine oil level is
about five minutes after a fully warmed up engine
is shut off.
Checking the oil while the vehicle is on level ground
will improve the accuracy of the oil level readings.
There are four possible dipstick types:
Crosshatched zone.
Crosshatched zone marked SAFE.
Crosshatched zone marked with MIN at the low
end of the range and MAX at the high end of the
range.
Crosshatched zone marked with dimples at the
MIN and the MAX ends of the range.
NOTE:Always maintain the oil level within the crosshatch
markings on the dipstick.
Adding 1 qt (1 L) of oil when the reading is at the
low end of the dipstick range will raise the oil level
to the high end of the range marking.
ADDING WASHER FLUID
The fluid reservoir is located in the engine
compartment and should be checked at regular
intervals. Fill the reservoir with windshield washer
solvent (not radiator antifreeze) and operate the
system for a few seconds to flush out any residual
water.
The washer fluid reservoir will hold a full gallon of
fluid when the Low Washer Fluid Light illuminates.
WARNING!
Never smoke while working in the engine
compartment: gas and flammable vapors may
be present, with the risk of fire.
Be very careful when working in the engine
compartment when the engine is hot: you may
get burned. Do not get too close to the radiator
cooling fan: the electric fan may start; danger
of injury. Scarves, ties and other loose clothing
might be pulled by moving parts.
CAUTION!

Be careful not to confuse the various types of
fluids while topping up: they are not compatible
with each other! Topping up with an unsuitable
fluid could severely damage your car.

The oil level must never exceed the MAX mark.
Always top up using engine oil of the same
specifications as that already in the engine.
If the engine oil is being topped up, wait for the
engine to cool down before loosening the filler
cap, particularly for vehicles with aluminum
caps (if equipped). WARNING: risk of burns!
Overfilling or underfilling the crankcase will
cause aeration or loss of oil pressure. This
could damage your engine.
CAUTION!
CAUTION!
Overfilling or underfilling the crankcase will
cause aeration or loss of oil pressure. This could
damage your engine.
WARNING!
Commercially available windshield washer
solvents are flammable. They could ignite and
burn you. Care must be exercised when filling or
working around the washer solution.

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SERVICING AND MAINTENANCE233
COOLING SYSTEM
Coolant Checks
Check the engine coolant (antifreeze) protection
every 12 months (before the onset of freezing
weather, where applicable). If the engine coolant is
dirty, the system should be drained, flushed, and
refilled with fresh OAT coolant (conforming to
MS-12106) only by an authorized dealer. Check
the front of the A/C condenser for any accumulation of bugs, leaves, etc. If dirty, clean by
gently spraying water from a garden hose vertically
down the face of the condenser.
Cooling System — Drain, Flush And Refill
NOTE:Some vehicles require special tools to add coolant
properly. Failure to fill these systems properly
could lead to severe internal engine damage. If any
coolant is needed to be added to the system
please contact an authorized dealer.
If the engine coolant (antifreeze) is dirty or
contains visible sediment, have an authorized
dealer clean and flush with OAT coolant
(conforming to MS.90032).
For the proper maintenance intervals
Úpage 222.
Selection Of Coolant
For further information Ú page 273.
NOTE:
Mixing of engine coolant (antifreeze) other than
specified Organic Additive Technology (OAT)
engine coolant, may result in engine damage
and may decrease corrosion protection. OAT
engine coolant is different and should not be
mixed with Hybrid Organic Additive Technology
(HOAT) engine coolant or any “globally compat -
ible” coolant. If a non-OAT engine coolant is
introduced into the cooling system in an emer -
gency, the cooling system will need to be drained, flushed, and refilled with fresh OAT
coolant (conforming to MS.90032), by an autho
-
rized dealer as soon as possible.
Do not use water alone or alcohol-based engine
coolant products. Do not use additional rust
inhibitors or antirust products, as they may not
be compatible with the radiator engine coolant
and may plug the radiator.
This vehicle has not been designed for use with
propylene glycol-based engine coolant. Use of
propylene glycol-based engine coolant is not
recommended.
Some vehicles require special tools to add
coolant properly. Failure to fill these systems
properly could lead to severe internal engine
damage. If any coolant is needed to be added to
the system please contact an authorized dealer.
Adding Coolant
The vehicle has been built with an improved engine
coolant (OAT coolant conforming to MS.90032)
that allows extended maintenance intervals.
This engine coolant (antifreeze) can be used up to
10 years or 150,000 miles (240,000 km) before
replacement. To prevent reducing this extended
maintenance period, it is important to use the
same engine coolant (OAT coolant conforming to
MS.90032) throughout the life of your vehicle.
WARNING!
You or others can be badly burned by hot
engine coolant (antifreeze) or steam from your
radiator. If you see or hear steam coming from
under the hood, do not open the hood until the
radiator has had time to cool. Never open a
cooling system pressure cap when the radi -
ator or coolant bottle is hot.

Keep hands, tools, clothing, and jewelry away from
the radiator cooling fan when the hood is raised.
The fan starts automatically and may start at any
time, whether the engine is running or not.

When working near the radiator cooling fan,
disconnect the fan motor lead and turn the
ignition to the OFF mode. The fan is tempera -
ture controlled and can start at any time the
ignition is in the ON mode.
8

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234SERVICING AND MAINTENANCE
Please review these recommendations for using
OAT engine coolant that meets the requirements of
the manufacturer Material Standard MS.90032.
When adding engine coolant:
We recommend using Mopar® Antifreeze/
Coolant 10 Year/150,000 Mile (240,000 km)
Formula OAT that meets the requirements of the
manufacturer Material Standard MS.90032.
Mix a minimum solution of 50% OAT engine
coolant that meets the requirements of the
manufacturer Material Standard MS.90032
and distilled water. Use higher concentrations
(not to exceed 70%) if temperatures below
−34°F (−37°C) are anticipated. Please contact
an authorized dealer for assistance.
Use only high purity water such as distilled or
deionized water when mixing the water/engine
coolant solution. The use of lower quality water
will reduce the amount of corrosion protection
in the engine cooling system.
NOTE:
It is the owner's responsibility to maintain the
proper level of protection against freezing
according to the temperatures occurring in the
area where the vehicle is operated.

Some vehicles require special tools to add coolant
properly. Failure to fill these systems properly could
lead to severe internal engine damage. If any
coolant is needed to be added to the system, please
contact an authorized dealer.

Mixing engine coolant types is not recom -
mended and can result in cooling system
damage. If HOAT and OAT coolant are mixed in
an emergency, have an authorized dealer drain,
flush, and refill with OAT coolant (conforming to
MS.90032) as soon as possible.
Cooling System Pressure Cap
The cap must be fully tightened to prevent loss of
engine coolant (antifreeze), and to ensure that
engine coolant will return to the radiator from the
coolant recovery tank.
The cap should be inspected and cleaned if there
is any accumulation of foreign material on the
sealing surfaces.
Disposal Of Used Coolant
Used ethylene glycol-based coolant (antifreeze) is
a regulated substance requiring proper disposal.
Check with your local authorities to determine the
disposal rules for your community. To prevent
ingestion by animals or children, do not store
ethylene glycol-based coolant in open containers
or allow it to remain in puddles on the ground.
If ingested by a child or pet, seek emergency
assistance immediately. Clean up any ground spills
immediately.
Coolant Level
The coolant expansion bottle provides a quick
visual method for determining that the coolant
level is adequate. With engine off and cold, the
level of the engine coolant (antifreeze) in the bottle
should be between the “MIN” and “MAX” marks.
Cooling System Notes
NOTE:
When the vehicle is stopped after a few miles/kilo -
meters of operation, you may observe vapor coming
from the front of the engine compartment. This is
normally a result of moisture from rain, snow, or high
humidity accumulating on the radiator and being
vaporized when the thermostat opens, allowing hot
engine coolant (antifreeze) to enter the radiator.

WARNING!

Do not open hot engine cooling system. Never add
engine coolant (antifreeze) when the engine is
overheated. Do not loosen or remove the cap to
cool an overheated engine. Heat causes pressure
to build up in the cooling system. To prevent
scalding or injury, do not remove the pressure cap
while the system is hot or under pressure.

Do not use a pressure cap other than the one
specified for your vehicle. Personal injury or
engine damage may result.

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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.

8

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SERVICING AND MAINTENANCE239

Fuse Access Cover Screw Location
The ID number of the electrical component
corresponding to each fuse can be found on the
back of the cover.
Cavity
Maxi Fuse Mini Fuse Description
* If Equipped
F01 50 Amp Red –Electronic Stability Control (ESC) Pump
F02 20 Amp Yellow (3.6 Gasoline Engine) –Starter Relay
F03 30 Amp Green –VSIM *
F04 50 Amp Red (3.6 Gasoline Engine) –Secondary Power Distribution Center (PDC) / Trans Power
ECU / Vacuum Pump / KL30 for the Shifter Transmission
Module [STM]
F05 50 Amp Red (3.6 Gasoline Engine) –EPB Valves & MOC
F06 40 Amp Orange (non A/C)
60 Amp Blue (A/C) –
Engine Cooling Fan - 2nd Speed
F07 50 Amp Red –Engine Cooling Fan - 1st Speed
F08 40 Amp Orange –Passenger Compartment Blower
F09 – 15 Amp BlueRear Power Outlet
8

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TECHNICAL SPECIFICATIONS273
FLUID CAPACITIES
ENGINE FLUIDS AND LUBRICANTS
US Metric
Fuel (Approximate)
3.6L Engine 24 gal90 L
Engine Oil With Filter
3.6L Engine 6 qt5.6 L
Cooling System
3.6L Engine 10.5 qt10 L
Component Fluid, Lubricant, or Genuine Part
Engine CoolantWe recommend using Mopar® Antifreeze/Coolant 10 Year/150,000 Mile (240,000 km) Formula OAT
(Organic Additive Technology) meeting the requirements of the manufacturer Material Standard MS.90032.
Engine Oil We recommend using Mopar® SAE 0W-20 Full Synthetic Engine Oil which meets the requirements of the
manufacturer Material Standard MS-6395. Equivalent full synthetic SAE 0W-20 engine oil can be used but must have
the API Starburst trademark Ú
page 228.
Fuel Selection 87 Octane (R+M)/2 Method, 0-15% Ethanol.
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274TECHNICAL SPECIFICATIONS
CHASSIS FLUIDS AND LUBRICANTS
CAUTION!
Mixing of engine coolant (antifreeze) other than specified Organic Additive Technology (OAT) engine coolant (antifreeze), may result in engine damage and
may decrease corrosion protection. Organic Additive Technology (OAT) engine coolant is different and should not be mixed with Hybrid Organic Additive Tech -
nology (HOAT) engine coolant (antifreeze) or any “globally compatible” coolant (antifreeze). If a non-OAT engine coolant (antifreeze) is introduced into the
cooling system in an emergency, the cooling system will need to be drained, flushed, and refilled with fresh OAT coolant (conforming to MS.90032), by an
authorized dealer as soon as possible.
Do not use water alone or alcohol-based engine coolant (antifreeze) products. Do not use additional rust inhibitors or antirust products, as they may not be
compatible with the radiator engine coolant and may plug the radiator.
This vehicle has not been designed for use with propylene glycol-based engine coolant (antifreeze). Use of propylene glycol-based engine coolant (antifreeze)
is not recommended.
Component Fluid, Lubricant, Or Genuine Part
Automatic TransmissionUse only Mopar® ZF 8 & 9 Speed ATF Automatic Transmission Fluid or equivalent. Failure to use the correct fluid may
affect the function or performance of your transmission.
Brake Master Cylinder We recommend using Mopar® DOT 4. DOT 4 brake fluid must be changed every two years regardless of mileage.

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284 Brake/Transmission Interlock
......................... 81Bulb Replacement......................................... 244Bulbs, Light.......................................... 191, 244
C
Camera, Rear...................................... 119, 120Capacities, Fluid............................................ 273Caps, Filler Fuel........................................................... 122Oil (Engine)................................................ 225Radiator (Coolant Pressure)...................... 234Car Washes................................................... 266Carbon Monoxide Warning............................ 192Cargo Area Cover............................................. 51Cargo Compartment........................................ 51Cargo Light...................................................... 36Cellular Phone............................................... 151Certification Label......................................... 123Change Engine Oil — If Equipped
S
.............. 57Change Oil Indicator........................................ 57Changing A Flat Tire....................................... 196Chart, Tire Sizing............................................ 250Check Engine Light (Malfunction
Indicator Light)................................................ 74Checking Your Vehicle For Safety.................. 189Checks, Safety............................................... 189Child Restraint............................................... 185
Child RestraintsBooster Seats........................................... 187Child Seat Installation.............................. 189Infant And Child Restraints....................... 186Older Children And Child Restraints......... 187Clean Air Gasoline......................................... 271CleaningWheels..................................................... 262Climate Control................................................ 40Manual........................................................ 40Rear............................................................. 43Cold Weather Operation.................................. 76Compact Spare Tire...................................... 260Contract, Service.......................................... 277Cooling Pressure Cap (Radiator Cap)............ 234Cooling System............................................. 233Adding Coolant (Antifreeze)...................... 233Coolant Level................................... 233, 234Cooling Capacity....................................... 273Disposal Of Used Coolant......................... 234Drain, Flush, And Refill............................. 233Inspection................................................. 234Points To Remember................................ 234Pressure Cap............................................ 234Radiator Cap............................................ 234Selection Of Coolant (Antifreeze)..... 233, 273Corrosion Protection..................................... 265Cruise Control (Speed Control)................. 87, 88
Cruise Light......................................................72Customer Assistance.................................... 275Customer Programmable Features............... 134Cybersecurity................................................ 133
D
Dealer Service............................................... 227Defroster, Windshield................................... 190Diagnostic System, Onboard............................74Dimmer Control Switch....................................37Dimmer SwitchHeadlight.....................................................34DipsticksAutomatic Transmission........................... 236Oil (Engine)............................................... 226Disable Vehicle Towing................................. 219DisposalAntifreeze (Engine Coolant)...................... 234Door Ajar..........................................................66Door Ajar Light.................................................66Door Locks.......................................................21Automatic....................................................23Doors...............................................................21Driver’s Seat Back Tilt......................................23DrivingThrough Flowing, Rising, Or Shallow Standing Water
.................................................... 131Drowsy Driver Detection................................ 157

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285
E
Electric Brake Control System
....................... 153Electric Parking Brake..................................... 78Electric Remote Mirrors................................... 32Electrical Power Outlets................................... 46Electronic Speed Control (Cruise Control)........ 88Electronic Stability Control (ESC)...................154Electronic Throttle Control Warning Light........ 67Emergency Braking........................................ 167Emergency, In Case Of Freeing Vehicle When Stuck...................... 218Jacking...................................................... 196Jump Starting............................................ 214Emission Control System Maintenance........... 74Engine........................................................... 225Air Cleaner................................................. 228Block Heater............................................... 77Break-In Recommendations........................ 78Checking Oil Level..................................... 226Compartment............................................ 225Compartment Identification...................... 225Coolant (Antifreeze)......................... 233, 273Cooling...................................................... 233Exhaust Gas Caution................................. 192Fails To Start............................................... 77Flooded, Starting......................................... 77Fuel Requirements.......................... 270, 273Jump Starting............................................ 214
Oil.................................................... 228, 273Oil Filler Cap............................................. 225Oil Filter.................................................... 228Oil Selection.................................... 228, 273Oil Synthetic............................................. 228Overheating.............................................. 216Starting........................................................ 76Enhanced Accident Response Feature......... 220Entry System, Illuminated................................ 38Ethanol......................................................... 271Exhaust Gas Cautions................................... 192Exhaust System................................... 192, 232Exterior Lights.........................................33, 191
F
FiltersAir Cleaner
................................................ 228Air Conditioning..................................43, 230Engine Oil................................................. 228Engine Oil Disposal................................... 228FlashersHazard Warning........................................ 193Turn Signals............................................. 191Flat Tire Changing................................ 249, 260Flat Tire Stowage................................. 249, 260Flooded Engine Starting................................... 77Fluid Capacities............................................ 273Fluid Leaks................................................... 191
Fluid Level ChecksAutomatic Transmission........................... 236Brake........................................................ 235Cooling System......................................... 233Engine Oil................................................. 226Fog Lights........................................................35Fold-Flat Seats.................................................23Forward Collision Warning............................ 164Four-Way Hazard Flasher.............................. 193Freeing A Stuck Vehicle................................. 218Fuel............................................................... 270Additives................................................... 271Clean Air................................................... 271Ethanol..................................................... 271Filler Cap (Gas Cap).................................. 122Gasoline................................................... 270Materials Added....................................... 271Methanol.................................................. 271Octane Rating.................................. 270, 273Requirements.................................. 270, 273Tank Capacity........................................... 273Fuses............................................................ 236
G
Gas Cap (Fuel Filler Cap)...................... 122, 123Gasoline, Clean Air........................................ 271Gasoline, Reformulated................................ 27111

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