2021 RAM PROMASTER ignition

SERVICING AND MAINTENANCE223
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 212.
Selection Of Coolant
For further information Ú page 268.
NOTE:
Mixing of engine coolant (antifreeze) other
than specified Organic Additive Technology
(OAT) engine coolant, may result in engine
damage and may decrease corrosion protec-
tion. OAT engine coolant is different and
should not be mixed with Hybrid Organic
Additive Technology (HOAT) engine coolant or
any “globally compatible” coolant. If a
non-OAT engine coolant 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 products. Do not use addi-
tional rust inhibitors or antirust products, as
they may not be compatible with the radiator
engine coolant and may plug the radiator.
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 radiator 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 automati -
cally 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
temperature controlled and can start at any
time the ignition is in the ON mode.
8

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228SERVICING AND MAINTENANCE
FUSES
General Information
The fuses protect electrical systems against
excessive current.
When a device does not work, you must check
the fuse element inside the blade fuse for a
break/melt.
Also, please be aware that when using power
outlets for extended periods of time with the
engine off may result in vehicle battery
discharge.
Blade Fuses

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, trans
-
mission system) or steering system 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 motors
with water.
1 — Fuse Element
2 — Blade Fuse with a good/functional
fuse element
3 — Blade fuse with a bad/not functional
fuse element (blown fuse)

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230SERVICING AND MAINTENANCE
F10–15 Amp Blue Horn
F14 –20 Amp Yellow Power Outlet
F15 –7.5 Amp Brown USB Charger
F16 –7.5 Amp Brown KL15 Shifter Transmission Module (STM) (3.6), KL15 Starter Relay
Coil (3.6 Gasoline Engine)
F17 –20 Amp Yellow Engine Control Module (ECM), Injectors (3.6 Gasoline Engine)
F18 –7.5 Amp Brown KL30 Engine Control Module (ECM), KL30 Main Relay Coil
(3.6 Gasoline Engine)
F19 –7.5 Amp Brown A/C Compressor — If Equipped
F20 –30 Amp Green Windshield Wiper
F21 –15 Amp Blue Fuel Pump
F22 –20 Amp Yellow Engine Control Module (ECM), Ignition Coils (3.6 Gasoline Engine)
F23 –20 Amp Yellow Electronic Stability Control (ESC) Valves
F24 –7.5 Amp Brown KL15 Vacuum Pump Relay Coil (3.6 Gasoline Engine) — If Equipped
F30 –15 Amp Blue Heated Mirrors
CavityMaxi Fuse Mini Fuse Description

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234SERVICING AND MAINTENANCE
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

CavityMini Fuse Description
F817.5 Amp Brown Seat Heater
F83 20 Amp YellowRear Left Windows Heater
F84 20 Amp YellowRear Right Windows Heater
F86 20 Amp YellowAuxiliary Switch (From Battery) — If Equipped
F87 20 Amp YellowAuxiliary Switch (From Ignition) — If Equipped

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278 H
Hazard Driving Through Flowing, Rising, OrShallow Standing Water
.......................... 86Hazard Warning Flashers.............................. 190Head Restraints............................................... 20HeadlightsCleaning.................................................... 260High Beam.................................................. 26High Beam/Low Beam Select Switch.......... 26Passing........................................................ 26Switch......................................................... 26Heated Mirrors................................................ 25Heated Seats................................................... 19Heater, Engine Block....................................... 58High Beam/Low Beam Select (Dimmer)
Switch.............................................................. 26Hill Start Assist.............................................. 153HitchesTrailer Towing.............................................. 80Hood Prop........................................................ 40Hood Release.................................................. 40
I
Ignition............................................................ 12Key....................................................... 10, 12Switch......................................................... 12Ignition Key Removal....................................... 12Illuminated Entry............................................. 30
Immobilizer (Sentry Key).................................. 12Inside Rearview Mirror..................................... 23Instrument Cluster.................................... 42, 54Display......................................................... 44Instrument Panel Lens Cleaning................... 262Interior And Instrument Lights......................... 28Interior Appearance Care.............................. 261Interior Lights................................................... 28Intermittent Wipers (Delay Wipers).................. 30iPod/USB/MP3 Control.................................... 37
J
Jack Location................................................ 190Jack Operation.............................................. 190Jacking And Tire Changing............................ 190Jacking And Tire Changing Instructions........ 191Jump Starting............................................... 203
K
Key FobProgramming Additional Key Fobs
............... 11Key Fob Battery Service
(Remote Keyless Entry).................................... 11Key Fob Programming
(Remote Keyless Entry).................................... 11Key-In Reminder.............................................. 12Keys................................................................. 10Replacement............................................... 11Sentry (Immobilizer).................................... 12
L
Lane Change Assist..........................................27Lap/Shoulder Belts....................................... 166Latches......................................................... 188Hood............................................................40Lead Free Gasoline....................................... 265Leaks, Fluid................................................... 189Life Of Tires................................................... 251Light Bulbs........................................... 188, 235Lights............................................................ 188Air Bag...................................... 48, 173, 187Brake Assist Warning................................ 152Brake Warning.............................................49Bulb Replacement.................................... 235Cruise..........................................................54Daytime Running.........................................26Dimmer Switch, Headlight...........................26Electronic Stability Program(ESP) Indicator........................................ 49, 152Exterior.............................................. 26, 188Hazard Warning Flasher........................... 190Headlights...................................................26High Beam...................................................26Illuminated Entry.........................................30Interior.........................................................28Malfunction Indicator (Check Engine)..........52Park......................................................26, 54Passing........................................................26

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