ECU RAM PROMASTER 2023 Service Manual

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 MAINTENANCE231
2. Remove and replace the cabin air filter from the filter retainer.

Removing Air Filter

3. Install the cabin air filter/filter retainer back into the fresh air inlet. When installing the filter retainer
make sure the retainer is fully engaged.
4. Install the two screws back into the assembly to secure the filter retainer to the fresh air inlet.

BODY LUBRICATION
Locks and all body pivot points, including such
items as seat tracks, door hinge pivot points and
rollers, liftgate, tailgate, decklid, sliding doors and
hood hinges, should be lubricated periodically with
a lithium-based grease, such as Mopar® Spray
White Lube to ensure quiet, easy operation and
to protect against rust and wear. Prior to the
application of any lubricant, the parts concerned
should be wiped clean to remove dust and grit;
after lubricating, excess oil and grease should be
removed. Particular attention should also be given
to hood latching components to ensure proper
function. When performing other underhood
services, the hood latch release mechanism, and
safety catch should be cleaned and lubricated.
The external lock cylinders should be lubricated
twice a year, preferably in the Autumn and Spring.
Apply a small amount of a high quality lubricant,
such as Mopar® Lock Cylinder Lubricant directly
into the lock cylinder.
WINDSHIELD WIPER BLADES
Clean the rubber edges of the wiper blades and the
windshield periodically with a sponge or soft cloth
and a mild nonabrasive cleaner. This will remove
accumulations of salt or road film.
Operation of the wipers on dry glass for long
periods may cause deterioration of the wiper
blades. Always use washer fluid when using the
wipers to remove salt or dirt from a dry windshield.
Avoid using the wiper blades to remove frost or ice
from the windshield. Keep the blade rubber out of
contact with petroleum products such as engine
oil, gasoline, etc.
NOTE:Life expectancy of wiper blades varies depending
on geographical area and frequency of use. If chat -
tering, marks, water lines or wet spots are present,
clean the wiper blades or replace as necessary.
1 — Fresh Air Inlet
2 — Cabin Air Filter
3 — Cabin Air Filter Retainer
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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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280CUSTOMER ASSISTANCE
GENERAL INFORMATION
Keyless Enter ‘n Go
The following regulatory statement applies to
Keyless Enter ‘n Go devices equipped in this
vehicle:
US
Start Button FCC ID: A2C81227100
Key FCC ID: S180227006
RFHM ECU FCC ID: M3N-82135300
These devices comply with Part 15 of the FCC
Rules. Operation is subject to the following two
conditions: (1) This device may not cause harmful
interference, and (2) This device must accept any
interference received, including interference that
may cause undesired operation.
MEXICO
La operación de este equipo está sujeta a las
siguientes dos condiciones:

1. es posible que este equipo o dispositivo no
cause interferencia perjudicial y

2. este equipo o dispositivo debe aceptar cualquier interferencia, incluyendo la que
pueda causar su operación no deseada. UConnect
The following regulatory statement applies to
UConnect devices equipped in this vehicle:
FCC ID: Y7OVP2REFRESH
IC: 7812H-VP2REFRESH
Blind Spot Monitoring Systems
The following regulatory statements apply to Blind
Spot Monitoring System:
MEXICO
IFETEL: RLVCOSR15-0904
La operación de este equipo está sujeta a las
siguientes dos condiciones:

1. es posible que este equipo o dispositivo no
cause interferencia perjudicial y

2. este equipo o dispositivo debe aceptar cualquier interferencia, incluyendo la que
pueda causar su operación no deseada.
US
FCC ID OAYSRR3B
These devices comply with Part 15 of the FCC
Rules. Operation is subject to the following two
conditions:

1. This device may not cause harmful interference, and
2. This device must accept any interference
received, including interference that may
cause undesired operation.
CAUTION TO USERS
Changes or modifications not expressly approved
by the party responsible for compliance could void
the user‘s authority to operate the equipment.
CANADA
ISED Cert Numb: 4135A-SRR3B
This device contains licence-exempt
transmitter(s)/receiver(s) that comply with
Innovation, Science and Economic Development
Canada’s licence-exempt RSS(s). Operation is
subject to the following two conditions:

1. This device may not cause interference.

2. This device must accept any interference, including interference that may cause
undesired operation of the device.
Radio frequency radiation exposure information:
This equipment complies with radiation exposure
limits set forth for an uncontrolled environment.
This equipment should be installed and operated
with minimum distance of 20 cm between the
radiator and your body.

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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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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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287
Lights
............................................................. 191Air Bag.......................................65, 178, 190Brake Assist Warning................................ 155Brake Warning............................................ 66Bulb Replacement..................................... 244Collision Warning................................. 70, 72Cruise.......................................................... 72Daytime Running......................................... 33Dimmer Switch, Headlight.................... 33, 34Electronic Stability Program(ESP) Indicator.................................. 67, 69, 155Exterior............................................... 33, 191Fuel Cutoff Failure....................................... 72Hazard Warning Flasher............................ 193Headlights................................................... 33High Beam.................................................. 34Illuminated Entry......................................... 38Instrument Cluster...................................... 67Interior........................................................ 36Malfunction Indicator (Check Engine)......... 69Park...................................................... 34, 73Passing........................................................ 34Rear Cargo Door Open Warning Light.......... 68Seat Belt Reminder..................................... 68Security Alarm............................................. 68Service...................................................... 244Tire Pressure Monitoring (TPMS)............... 168Tow Haul..................................................... 72
TowingHookBreakdown............................... 71Traction Control........................................ 155Turn Signals.......................................33, 191Warning Instrument Cluster Descriptions.... 67Loading Vehicle................................... 123, 124Capacities................................................. 124Tires......................................................... 253LocksAutomatic Door..................................... 21, 23Low Tire Pressure System............................. 168Lubrication, Body.......................................... 231Lug Nuts/Bolts.............................................. 269
M
Maintenance Free Battery............................ 227Maintenance Schedule................................. 221Malfunction Indicator Light (Check Engine)..... 69ManualService..................................................... 279Methanol...................................................... 271Mirrors............................................................. 30Electric Remote........................................... 32Exterior Folding............................................ 31Heated......................................................... 33Outside........................................................ 31Rearview.............................................30, 193Modifications/AlterationsVehicle........................................................... 8Monitor, Tire Pressure System...................... 168Mopar Parts.................................................. 278
MP3 Control.....................................................45Multi-Function Control Lever............................33
N
New Vehicle Break-In Period............................78
O
Occupant Restraints..................................... 170Octane Rating, Gasoline (Fuel)...................... 270Oil Change Indicator.........................................57Reset...........................................................57Oil Filter, Change........................................... 228Oil Filter, Selection........................................ 228Oil Pressure Light.............................................68Oil, Engine............................................ 228, 273Capacity.................................................... 273Checking................................................... 226Dipstick..................................................... 226Disposal.................................................... 228Filter......................................................... 228Filter Disposal........................................... 228Identification Logo.................................... 228Materials Added To................................... 228Pressure Warning Light................................68Recommendation............................ 228, 273Synthetic................................................... 228Viscosity.................................................... 273Onboard Diagnostic System.............................74Operating Precautions.....................................74
11

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288 Operator Manual Owner's Manual
........................................ 279Outside Rearview Mirrors......................... 30, 31Overheating, Engine...................................... 216
P
Paint Care...................................................... 265Parking Brake.................................................. 78ParkSenseFront And Rear.......................................... 104ParkSense Active Park Assist........................ 112ParkSense System, Rear............................... 104Passing Light................................................... 34Passive Entry................................................... 22Pedestrian Warning System.......................... 167Personal Settings............................................ 59Pets............................................................... 190Placard, Tire And Loading Information........... 253PowerInverter........................................................ 47Mirrors......................................................... 32Outlet (Auxiliary Electrical Outlet)................ 46Steering....................................................... 85Windows...................................................... 49Pregnant Women And Seat Belts...................176Preparation For Jacking....................... 196, 197
R
Radial Ply Tires.............................................. 257Radiator Cap (Coolant Pressure Cap)............ 234
RadioSound Setting........................................... 147Radio Operation............................................ 151Rain Sensitive Wiper System........................... 39Rear Camera........................................ 119, 120Rear Cross Path............................................ 161Rear ParkSense System............................... 104Rearview Mirror............................................... 30Recreational Towing..................................... 130Reformulated Gasoline................................. 271Refrigerant.................................................... 230Release, Hood................................................. 50Reminder, Seat Belt...................................... 171Remote Keyless EntryProgramming Additional Key Fobs............... 15Remote StartingExit Remote Start Mode.............................. 19Remote Starting System.................................. 18Replacement Bulbs...................................... 244Replacement Keys........................................... 15Replacement Tires........................................ 259Reporting Safety Defects.............................. 278Restraints, Child........................................... 185Restraints, Head.............................................. 28Rotation, Tires.............................................. 264
S
Safety Checks Inside Vehicle........................ 190Safety Checks Outside Vehicle..................... 191Safety Defects, Reporting............................. 278
Safety Information, Tire................................. 249Safety Tips.................................................... 189Safety, Exhaust Gas...................................... 192Schedule, Maintenance................................ 221Seat Belts............................................ 171, 190Adjustable Shoulder Belt.......................... 175Adjustable Upper Shoulder Anchorage..... 175Adjustable Upper Shoulder Belt Anchorage............................................ 175Automatic Locking Retractor (ALR)........... 176Child Restraints........................................ 185Energy Management Feature................... 176Front Seat............................... 171, 172, 174Inspection................................................. 190Lap/Shoulder Belt Operation.................... 174Lap/Shoulder Belt Untwisting................... 174Lap/Shoulder Belts................................... 172Operating Instructions.............................. 174Pregnant Women...................................... 176Rear Seat.................................................. 172Reminder.................................................. 171Untwisting Procedure................................ 174Seat Belts Maintenance................................ 267Seats................................................................23Adjustment..................................................23Heated.........................................................26Rear Folding................................................23Tilting...........................................................23Security Alarm...........................................20, 68Selection Of Coolant (Antifreeze).................. 273

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