2023 RAM PROMASTER ignition

IN CASE OF EMERGENCY219
TOWING A DISABLED VEHICLE
This section describes procedures for towing a disabled vehicle using a commercial towing service.
Proper towing or lifting equipment is required to
prevent damage to your vehicle. Use only tow bars
and other equipment designed for this purpose,
following equipment manufacturer’s instructions.
Use of safety chains is mandatory. Attach a tow bar
or other towing device to main structural members
of the vehicle, not to fascia/bumper or associated
brackets. State and local laws regarding vehicles
under tow must be observed.
NOTE:
You must ensure that the Auto Park Brake
Úpage 78 feature is disabled before towing this
vehicle to avoid inadvertent Electric Park Brake
engagement. The Auto Park Brake feature is
enabled or disabled via the customer program -
mable features in the Uconnect Settings.
Vehicles with a discharged battery, or total elec -
trical failure when the Electric Park Brake (EPB)
is engaged, will need a wheel dolly or jack to
raise the rear wheels off the ground when
moving the vehicle onto a flatbed.
The Safehold feature will engage the Electric
Park Brake whenever the driver's door is
opened (if the battery is connected, ignition is
ON, transmission is not in PARK, and brake
pedal is released). If you are towing this vehicle
with the ignition in the ON/RUN mode, you must
manually disable the Electric Park Brake each
time the driver's door is opened by pressing the
brake pedal and then releasing the EPB. If you must use the accessories (wipers,
defrosters, etc.) while being towed, the ignition
must be in the ON/RUN mode.
If the key fob is unavailable or the vehicle's battery
is discharged, for instructions on shifting the
automatic transmission out of PARK (P) for
towing Ú
page 217.
Towing Condition Wheels OFF the Ground Automatic Transmission
Flat Tow NONENOT ALLOWED
Dolly Tow Front
OK
Rear NOT ALLOWED
On Trailer ALLOK
NOTE:When towing your vehicle, always follow applicable state and provincial laws. Contact state and provincial Highway Safety offices for additional details.
CAUTION!
Do not use sling type equipment when towing.
Vehicle damage may occur.
When securing the vehicle to a flat bed truck,
do not attach to front or rear suspension
components. Damage to your vehicle may
result from improper towing.
7

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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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232SERVICING AND MAINTENANCE
EXHAUST SYSTEM
The best protection against carbon monoxide entry
into the vehicle body is a properly maintained
engine exhaust system.

If you notice a change in the sound of the exhaust
system; or if the exhaust fumes can be detected inside
the vehicle; or when the underside or rear of the vehicle
is damaged; have an authorized technician inspect the
complete exhaust system and adjacent body areas for
broken, damaged, deteriorated, or mispositioned parts.
Open seams or loose connections could permit exhaust
fumes to seep into the passenger compartment.
In addition, have the exhaust system inspected each
time the vehicle is raised for lubrication or oil change.
Replace as required.

Under normal operating conditions, the catalytic
converter will not require maintenance. However, it
is important to keep the engine properly tuned to
ensure proper catalyst operation and prevent
possible catalyst damage.
NOTE:Intentional tampering with emissions control
systems can result in civil penalties being
assessed against you.

In unusual situations involving grossly malfunctioning
engine operation, a scorching odor may suggest severe
and abnormal catalyst overheating. If this occurs, stop
the vehicle, turn off the engine and allow it to cool.
Service, including a tune-up to manufacturer's
specifications, should be obtained immediately.

To minimize the possibility of catalytic converter
damage:
Do not interrupt the ignition when the transmis-
sion is in gear and the vehicle is in motion.
Do not try to start the vehicle by pushing or
towing the vehicle.
Do not idle the engine with any ignition compo -
nents disconnected or removed, such as when
diagnostic testing, or for prolonged periods
during very rough idle or malfunctioning oper -
ating conditions.WARNING!

Exhaust gases can injure or kill. They contain
Carbon Monoxide (CO), which is colorless and
odorless. Breathing it can make you unconscious
and can eventually poison you
Ú
page 192.

A hot exhaust system can start a fire if you
park over materials that can burn, such as
grass or leaves, and those materials that
come into contact with your exhaust system.
Do not park or operate your vehicle in areas
where your exhaust system can contact
anything that can burn.
CAUTION!
The catalytic converter requires the use of
unleaded fuel only. Leaded gasoline will
destroy the effectiveness of the catalyst as an
emissions control device and may seriously
reduce engine performance and cause
serious damage to the engine.

Damage to the catalytic converter can result if
your vehicle is not kept in proper operating condi -
tion. In the event of engine malfunction, particu-
larly involving engine misfire or other apparent
loss of performance, have your vehicle serviced
promptly. Continued operation of your vehicle with
a severe malfunction could cause the converter to
overheat, resulting in possible damage to the
converter and vehicle.

23_VF_OM_EN_USC_t.book Page 232

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

23_VF_OM_EN_USC_t.book Page 233

SERVICING AND MAINTENANCE237
(Continued)
Also, please be aware that using power outlets for
extended periods of time with the engine off may
result in vehicle battery discharge.

Blade Fuses

1 — Fuse Element
2 — Blade Fuse with a good/functional fuse
element
3 — Blade fuse with a bad/not functional fuse
element (blown fuse)
WARNING!
When replacing a blown fuse, always use an
appropriate replacement fuse with the same
amp rating as the original fuse. Never replace
a fuse with another fuse of higher amp rating.
Never replace a blown fuse with metal wires or
any other material. Do not place a fuse inside
a circuit breaker cavity or vice versa. Failure to
use proper fuses may result in serious
personal injury, fire and/or property damage.
Before replacing a fuse, make sure that the
ignition is off and that all the other services
are switched off and/or disengaged.
If the replaced fuse blows again, contact an
authorized dealer.

If a general protection fuse for safety systems (air
bag system, braking system), power unit systems,
(engine system, transmission system) steering
system or Body Control Module (BCM) blows,
contact an authorized dealer.

CAUTION!
If it is necessary to wash the engine
compartment, take care not to directly hit the
fuse box, and the windshield wiper motor with
water.
WARNING!
8

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240SERVICING AND MAINTENANCE
F10 – 15 Amp BlueHorn
F14 – 20 Amp YellowPower Outlet
F15 – –Spare
F16 – 7.5 Amp BrownKL15 ECM/ KL15 Starter Relay Coil
F17 – 20 Amp YellowEngine Control Module (ECM) / Injectors
F18 – 7.5 Amp BrownKL30 Engine Control Module (ECM) / KL30 Main Relay Coil
F19 – 7.5 Amp BrownA/C Compressor *
F20 – 30 Amp GreenWindshield Wiper
F21 – 15 Amp BlueFuel Pump
F22 – 20 Amp YellowEngine Control Module (ECM) / Ignition Coils
F23 – 30 Amp GreenTT MOD
F24 – 7.5 Amp BrownKL15 Vacuum Pump Relay Coil
F30 – 15 Amp BlueHeated Mirrors
CavityMaxi Fuse Mini Fuse Description
* If Equipped

23_VF_OM_EN_USC_t.book Page 240

SERVICING AND MAINTENANCE243
Right Central Pillar Fuses
The right central pillar fuse panel is located on the
interior side at the base of the passenger side
B-pillar.

Fuse Panel LocationFuse Panel

F53
7.5 Amp Brown +30 (IPC) + Keyless – GO / Passive Entry / Brake NO / EPB SW
F94 15 Amp Blue Not Used
CavityMini Fuse Description
CavityMini Fuse Description
* If Equipped
F81 7.5 Amp BrownSeat Heater
F82 30 Amp GreenInverter Power Outlet
F83 20 Amp YellowRear Left Windows Heater
F84 20 Amp YellowRear Right Windows Heater
F86 20 Amp YellowAuxiliary Switch (From Battery) *
F87 20 Amp YellowAuxiliary Switch (From Ignition) *8

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272TECHNICAL SPECIFICATIONS
(Continued)
MMT IN GASOLINE
Methylcyclopentadienyl Manganese Tricarbonyl
(MMT) is a manganese-containing metallic additive
that is blended into some gasolines to increase
octane. Gasoline blended with MMT provides no
performance advantage beyond gasoline of the
same octane number without MMT. Gasoline
blended with MMT reduces spark plug life and
reduces emissions system performance in some
vehicles. The manufacturer recommends that
gasoline without MMT be used in your vehicle.
The MMT content of gasoline may not be indicated
on the gasoline pump; therefore, you should ask
your gasoline retailer whether the gasoline
contains MMT. MMT is prohibited in Federal and
California reformulated gasoline.
FUEL SYSTEM CAUTIONS
NOTE:Intentional tampering with the emissions control
system can result in civil penalties being assessed
against you.
CAUTION!
Follow these guidelines to maintain your
vehicle’s performance:
The use of leaded gasoline is prohibited by
Federal law. Using leaded gasoline can impair
engine performance and damage the emis-
sions control system.
An out-of-tune engine or certain fuel or
ignition malfunctions can cause the catalytic
converter to overheat. If you notice a pungent
burning odor or some light smoke, your engine
may be out of tune or malfunctioning and may
require immediate service. Contact an autho -
rized dealer for service assistance.
The use of fuel additives, which are now being
sold as octane enhancers, is not recom -
mended. Most of these products contain high
concentrations of methanol. Fuel system
damage or vehicle performance problems
resulting from the use of such fuels or addi -
tives is not the responsibility of the manufac-
turer and may void or not be covered under
the New Vehicle Limited Warranty.
CAUTION!

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