check engine Ram ProMaster 2020 Owner's Guide

160SERVICING AND MAINTENANCE
Engine Air Cleaner Filter Selection
The quality of replacement engine air cleaner
filters varies considerably. Only high quality
filters should be used to ensure most efficient
service. Mopar engine air cleaner filters are a
high quality filter and are recommended.
Air Conditioner Maintenance
For best possible performance, your air condi -
tioner should be checked and serviced by an
authorized dealer at the start of each warm
season. This service should include cleaning of
the condenser fins and a performance test.
Drive belt tension should also be checked at
this time.
Refrigerant Recovery And Recycling
R-134a Air Conditioning Refrigerant is a hydro -
fluorocarbon (HFC) that is an ozone-saving
product. However, the manufacturer recom -
mends that air conditioning service be
performed by authorized dealer or other service
facilities using recovery and recycling equip -
ment.
NOTE:
Use only manufacturer approved A/C system
PAG compressor oil and refrigerants.
Cabin Air Filter (A/C Air Filter)
Refer to the “Maintenance Plan” for the proper
maintenance intervals.
WARNING!
The air induction system (air cleaner, hoses,
etc.) can provide a measure of protection in
the case of engine backfire. Do not remove
the air induction system (air cleaner, hoses,
etc.) unless such removal is necessary for
repair or maintenance. Make sure that no
one is near the engine compartment before
starting the vehicle with the air induction
system (air cleaner, hoses, etc.) removed.
Failure to do so can result in serious personal
injury.
WARNING!
Use only refrigerants and compressor lubri -
cants approved by the manufacturer for
your air conditioning system. Some unap -
proved 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 mode. 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.

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SERVICING AND MAINTENANCE163
Under normal operating conditions, the cata-
lytic converter will not require maintenance.
However, it is important to keep the engine
properly tuned to ensure proper catalyst opera -
tion 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 malfunc -
tioning engine operation, a scorching odor may
suggest severe and abnormal catalyst over -
heating. If this occurs, stop the vehicle, turn off
the engine and allow it to cool. Service,
including a tune-up to manufacturer's specifica-
tions, should be obtained immediately.
To minimize the possibility of catalytic converter
damage:
Do not interrupt the ignition when the trans -
mission 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
components disconnected or removed, such
as when diagnostic testing, or for prolonged
periods during very rough idle or malfunc -
tioning operating conditions.
Cooling System
Coolant Checks
Check the engine coolant (antifreeze) protec-
tion every 12 months (before the onset of
freezing weather, where applicable). If the
engine coolant (antifreeze) 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 (anti -
freeze) (conforming to MS.90032).
Refer to the “Maintenance Plan” in this section
for the proper maintenance intervals.
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 pres -
sure 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 or 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.
7

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SERVICING AND MAINTENANCE165
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 a local autho -
rized dealer.
Mixing engine coolant (antifreeze) types is
not recommended and can result in cooling
system damage. If HOAT and OAT coolant are
mixed in an emergency, have a 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 (antifreeze) 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 commu -
nity. To prevent ingestion by animals or chil -
dren, 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.
Points To Remember
NOTE:
When the vehicle is stopped after a few miles/
kilometers of operation, you may observe vapor
coming from the front of the engine compart -
ment. This is normally a result of moisture from
rain, snow, or high humidity accumulating on
the radiator and being vaporized when the ther -
mostat opens, allowing hot engine coolant (anti -
freeze) 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.
7

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166SERVICING AND MAINTENANCE
(Continued)
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 (antifreeze) needs to be added, the
contents of the coolant expansion bottle
must also be protected against freezing.
If frequent engine coolant (antifreeze) addi-
tions are required, the cooling system should
be pressure tested for leaks.
Maintain engine coolant (antifreeze) concen -
tration at a minimum of 50% OAT coolant
(conforming to MS.90032) and distilled
water for proper corrosion protection of your
engine which contains aluminum compo -
nents.
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
necessary, install ONLY the correct type ther -
mostat. Other designs may result in unsatis -
factory engine coolant (antifreeze)
performance, poor gas mileage, and
increased emissions.
Brake System
In order to ensure brake system performance,
all brake system components should be
inspected periodically. Refer to the “Mainte -
nance Plan” in this section for the proper main -
tenance intervals.
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 lamp 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.
Refer to “Fluids And Lubricants” in “Technical
Specifications” for further information.
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 manufacturer's recommended
brake fluid. Refer to “Fluids And Lubricants”
in “Technical Specifications” for further infor-
mation. 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.

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192TECHNICAL SPECIFICATIONS
Inspect the wheel mounting surface prior to
mounting the tire and remove any corrosion or
loose particles.
Wheel Mounting Surface
Tighten the lug nuts/bolts in a star pattern until
each nut/bolt has been tightened twice. Ensure
that the socket is fully engaged on the lug nut/
bolt (do not insert it halfway).
Torque Patterns After 25 miles (40 km), check the lug nut/bolt
torque to be sure that all the lug nuts/bolts are
properly seated against the wheel.
FUEL REQUIREMENTS
3.6L Engine
This engine is designed to meet all
emissions regulations and provide
optimum fuel economy and perfor-
mance when using high quality
unleaded “Regular” gasoline having a posted
octane number of 87 as specified by the (R+M)/
2 method. The use of higher octane “Premium”
gasoline is not required, as it will not provide
any benefit over “Regular” gasoline in these
engines. While operating on gasoline with an octane
number of 87, hearing a light knocking sound
from the engine is not a cause for concern.
However, if the engine is heard making a heavy
knocking sound, see your dealer immediately.
Use of gasoline with an octane number lower
than 87 can cause engine failure and may void
or not be covered by the New Vehicle Limited
Warranty.
Poor quality gasoline can cause problems such
as hard starting, stalling, and hesitations. If you
experience these symptoms, try another brand
of gasoline before considering service for the
vehicle.Reformulated Gasoline
Many areas of the country require the use of
cleaner burning gasoline referred to as “Refor
-
mulated Gasoline”. Reformulated gasoline
contains oxygenates and are specifically
blended to reduce vehicle emissions and
improve air quality.
The use of reformulated gasoline is recom -
mended. Properly blended reformulated
gasoline will provide improved performance
and durability of engine and fuel system
components.
WARNING!
To avoid the risk of forcing the vehicle off the
jack, do not tighten the lug nuts/bolts fully
until the vehicle has been lowered. Failure to
follow this warning may result in personal
injury.

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250

INDEX

A

Adding Engine Coolant (Antifreeze)
............... 164
Adding Washing Fluid
............................... 157
Additives, Fuel
....................................... 193
Air Bag
................................................. 74Air Bag Operation............................... 75Air Bag Warning Light.......................... 73Enhanced Accident Response.............. 151Event Data Recorder (EDR)................. 151If Deployment Occurs.......................... 80Maintaining Your Air Bag System............ 81Maintenance..................................... 81Side Air Bags..................................... 76Transporting Pets............................... 89
Air Bag Light
............................... 47, 73, 90
Air Cleaner, Engine (Engine Air Cleaner Filter)
... 159
Air Conditioner Maintenance
...................... 160
Air Conditioner Refrigerant
......................... 160
Air Conditioner System
............................. 160
Air Conditioning Filter
......................... 34, 160
Air Conditioning, Operating Tips
............... 33, 34
Air Filter
.............................................. 159
Air Pressure

Tires.............................................. 177
Alarm
Security Alarm............................. 13, 49

Alarm System
Security Alarm.................................... 13
Alterations/Modifications
Vehicle...............................................8
Antifreeze (Engine Coolant)
................ 164, 195Disposal......................................... 165
Anti-Lock Brake System (ABS)
.......................56
Anti-Lock Warning Light
.............................. 52
Assist, Hill Start
........................................ 60
Auto Down Power Windows
.......................... 35
Auto Up Power Windows
.............................. 35
Automatic Door Locks
................................15
Automatic Transmission
...................... 95, 168Adding Fluid.................................... 168Fluid And Filter Change...................... 168Fluid Change................................... 168Fluid Level Check...................... 167, 168Fluid Type............................... 167, 197Special Additives.............................. 167
AUX Cord
............................................. 238
Auxiliary Driving Systems
............................. 61
B

Battery
......................................... 47, 157Charging System Light......................... 47Keyless Key Fob Replacement............... 10
Belts, Seat
............................................. 90

Body Builders Guide
................................... 8
Body Mechanism Lubrication
..................... 161
B-Pillar Location
.................................... 173
Brake Assist System
................................. 57
Brake Control System, Electronic
................... 57
Brake Fluid
...................................166, 197
Brake System
................................166, 191Anti-Lock (ABS).................................. 56Fluid Check.................................... 166Master Cylinder............................... 166Parking............................................ 94Warning Light.................................... 48
Brake, Parking
........................................ 94
Brake/Transmission Interlock
...................... 96
Bulb Replacement
.................................. 123
Bulbs, Light
....................................91, 123
C

Camera, Rear
....................................... 109
Capacities, Fluid
.................................... 195
Caps, Filler
Fuel.............................................. 111Oil (Engine)..................................... 156Power Steering................................ 103Radiator (Coolant Pressure)................ 165
Car Washes
......................................... 187
Carbon Monoxide Warning
...................89, 194
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251

Cargo Area Cover

..................................... 37
Cargo Compartment
.................................. 37
Cargo Light
............................................ 26
Certification Label
.................................. 112
Change Oil Indicator
.................................. 44
Changing A Flat Tire
........................ 133, 168
Chart, Tire Sizing
.................................... 169
Check Engine Light
(Malfunction Indicator Light)
......................... 55
Checking Your Vehicle For Safety
................... 89
Checks, Safety
........................................ 89
Child Restraint
........................................ 83
Child Restraints
Booster Seats.................................... 86Child Seat Installation.......................... 88Infant And Child Restraints................... 85Older Children And Child Restraints........ 85
Clean Air Gasoline
.................................. 192
Cleaning
Wheels........................................... 183
Climate Control
........................................ 28Manual............................................ 28Rear................................................ 32
Cold Weather Operation
.............................. 92
Compact Spare Tire
................................. 181
Contract, Service
.................................... 247
Cooling Pressure Cap (Radiator Cap)
............. 165

Cooling System
...................................... 163Adding Coolant (Antifreeze)................. 164Coolant Level........................... 163, 165Cooling Capacity............................... 195Disposal Of Used Coolant................... 165Drain, Flush, And Refill....................... 163Inspection....................................... 165Points To Remember......................... 165Pressure Cap................................... 165Radiator Cap................................... 165Selection Of Coolant (Antifreeze).. 164, 195
Corrosion Protection
................................ 187
Cruise Light
............................................53
Cupholders
..................................... 38, 190
Customer Assistance
............................... 246
Customer Programmable Features
................ 199
Cybersecurity
........................................ 198
D

Dealer Service
....................................... 158
Defroster, Windshield
.................................90
Diagnostic System, Onboard
......................... 54
Dimmer Control Switch
............................... 27
Dimmer Switch
Headlight..........................................24
Dipsticks
Automatic Transmission..................... 168Power Steering................................. 103
Disable Vehicle Towing
............................. 149

Disposal
Antifreeze (Engine Coolant)................ 165
Door Ajar
.............................................. 47
Door Ajar Light
........................................ 47
Door Locks
............................................ 14Automatic........................................ 15
Doors
.................................................. 14
Driver’s Seat Back Tilt
............................... 15
Driving
Through Flowing, Rising, Or Shallow
Standing Water
............................... 121
E

Electric Brake Control System
....................... 57
Electric Remote Mirrors
.............................. 22
Electrical Power Outlets
............................. 39
Electronic Speed Control (Cruise Control)
....... 103
Electronic Stability Control (ESC)
................... 57
Electronic Throttle Control Warning Light
.......... 48
Emergency, In Case Of
Freeing Vehicle When Stuck............... 149Jacking...................................133, 168Jump Starting.................................. 145
Emission Control System Maintenance
............ 55
11
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252

Engine

................................................ 156Air Cleaner...................................... 159Block Heater..................................... 93Break-In Recommendations.................. 93Compartment.................................. 156Compartment Identification................ 156Coolant (Antifreeze)................... 163, 195Cooling........................................... 163Exhaust Gas Caution................... 89, 194Fails To Start..................................... 92Flooded, Starting................................ 92Fuel Requirements................... 192, 195Jump Starting.................................. 145Oil......................................... 158, 195Oil Filler Cap.................................... 156Oil Filter......................................... 159Oil Selection............................ 158, 195Oil Synthetic.................................... 159Overheating.................................... 147Starting............................................ 92
Engine Oil Viscosity
................................. 159
Engine Oil Viscosity Chart
.......................... 159
Enhanced Accident Response Feature
........... 151
Entry System, Illuminated
............................ 27
Ethanol
............................................... 193
Exhaust Gas Cautions
........................ 89, 194
Exhaust System
............................... 89, 162
Exterior Lights
................................... 23, 91
F

Filters
Air Cleaner
...................................... 159Air Conditioning.......................... 34, 160Engine Oil............................... 159, 195Engine Oil Disposal........................... 159
Flashers
Hazard Warning................................ 123Turn Signals................................ 53, 91
Flat Tire Changing
........................... 168, 181
Flat Tire Stowage
............................ 168, 181
Flooded Engine Starting
.............................. 92
Fluid Capacities
.....................................195
Fluid Leaks
............................................. 91
Fluid Level Checks
Automatic Transmission..................... 168Brake............................................. 166Cooling System................................ 163Power Steering................................. 103
Fluids And Lubricants
............................... 195
Fog Lights
.............................................. 25
Fold-Flat Seats
........................................ 15
Four-Way Hazard Flasher
........................... 123
Freeing A Stuck Vehicle
............................ 149

Fuel
.................................................. 192Additives........................................ 193Clean Air........................................ 192Ethanol.......................................... 193Filler Cap (Gas Cap).......................... 111Gasoline........................................ 192Materials Added.............................. 193Methanol....................................... 193Octane Rating..........................192, 195Requirements..........................192, 195Tank Capacity................................. 195
Fuses
................................................ 128
G

Gas Cap (Fuel Filler Cap)
.......................... 111
Gasoline, Clean Air
................................. 192
Gasoline, Reformulated
........................... 192
Gear Ranges
.......................................... 97
Gear Selector Override
............................. 148
Glass Cleaning
...................................... 190
Gross Axle Weight Rating
...................112, 113
Gross Vehicle Weight Rating
...............112, 113
Guide
Body Builders...................................... 8
GVWR
................................................ 112
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254
Electronic Stability Program(ESP) Indicator
................................. 48, 59Exterior...................................... 23, 91Hazard Warning Flasher..................... 123Headlights........................................ 23High Beam........................................ 24Illuminated Entry................................ 27Interior............................................. 25Malfunction Indicator (Check Engine)...... 51Park.......................................... 24, 53Passing............................................ 24Security Alarm................................... 49Service........................................... 123Tire Pressure Monitoring (TPMS)............ 61Traction Control.................................. 59Turn Signals.......................... 23, 53, 91Warning Instrument Cluster Descriptions................... 48, 53
Loading Vehicle
............................. 112, 113Capacities....................................... 113Tires.............................................. 173
Locks
Automatic Door............................ 14, 15
Low Tire Pressure System
............................ 61
Lubrication, Body
................................... 161
Lug Nuts/Bolts
...................................... 191
M

Maintenance Free Battery
.......................... 157
Maintenance Schedule
............................. 152
Malfunction Indicator Light (Check Engine)
.. 51, 55
Manual
Service........................................... 249
Methanol
............................................. 193
Mirrors
.................................................21Electric Remote.................................. 22Exterior Folding.................................. 22Heated............................................. 23Outside............................................21Rearview..........................................21
Modifications/Alterations
Vehicle...............................................8
Monitor, Tire Pressure System
.......................61
Mopar Parts
..........................................248
MP3 Control
......................................... 238
Multi-Function Control Lever
......................... 23
N

New Vehicle Break-In Period
......................... 93
O

Occupant Restraints
................................. 64
Octane Rating, Gasoline (Fuel)
.................... 192
Oil Change Indicator
................................. 44Reset.............................................. 44
Oil Filter, Change
................................... 159
Oil Filter, Selection
................................. 159
Oil Pressure Light
..................................... 49
Oil, Engine
....................................158, 195Capacity........................................ 195Change Interval............................... 158Dipstick......................................... 157Disposal........................................ 159Filter...................................... 159, 195Filter Disposal................................. 159Identification Logo............................ 159Materials Added To.......................... 159Pressure Warning Light....................... 49Recommendation.....................158, 195Synthetic........................................ 159Viscosity................................. 159, 195
Onboard Diagnostic System
......................... 54
Operating Precautions
............................... 54
Operator Manual
Owner's Manual............................ 8, 249
Outside Rearview Mirrors
............................ 21
Overheating, Engine
................................ 147
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