2017 Ram ProMaster ECU

2. Take the retainer and position it inside the circularbracket. 3. Tighten the knob on the bolt to secure it to the bracket.
Adapter/Bracket Union
Securing The Bracket
6
WHAT TO DO IN EMERGENCIES 265

Towing Condition Wheels OFF theGround ALL Models
Flat Tow NONEIf transmission is operable:
•Transmission in NEUTRAL
• 25 mph (40 km/h) max speed
• 15 miles (24 km) max distance
Wheel Lift or Dolly
To w Rear
Front OK
Flatbed ALL BEST METHOD
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 man-
datory. Attach a tow bar or other towing device to main
structural members of the vehicle, not to bumpers or
associated brackets. State and local laws regarding vehicles
under tow must be observed.
If you must use the accessories (wipers, defrosters, etc.)
while being towed, the ignition must be in the ON/RUN
mode.
NOTE: For vehicles equipped with diesel engine and
electric park brake, see important information in the Diesel
Supplement. If the key fob is unavailable or the vehicle’s battery is
discharged, refer to “Gear Selector Override” in this section
for instructions on shifting the automatic transmission out
of PARK for towing.
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. Dam-
age to your vehicle may result from improper towing.
6
WHAT TO DO IN EMERGENCIES 273

MAINTAINING YOUR VEHICLE
CONTENTS
ENGINE COMPARTMENT — 3.6L ...........277
 ONBOARD DIAGNOSTIC SYSTEM — OBD II . . .278
▫ Onboard Diagnostic System (OBD II)
Cybersecurity ........................ .278
▫ Loose Fuel Filler Cap Message .............279
 EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS .......................... .279
 REPLACEMENT PARTS ...................280
 DEALER SERVICE ...................... .280
 MAINTENANCE PROCEDURES .............281
▫ Engine Oil .......................... .281
▫ Engine Oil Filter ...................... .283
▫ Engine Air Cleaner Filter .................284
▫ Exhaust System ....................... .284
▫ Maintenance-Free Battery .................286 ▫
Air Conditioner Maintenance ..............286
▫ Body Lubrication ..................... .289
▫ Windshield Wiper Blades .................289
▫ Cooling System ....................... .290
▫ Brake System ........................ .294
▫ Automatic Transmission (3.6L Gasoline Engine
Only) .............................. .295
▫ Appearance Care And Protection From
Corrosion ........................... .297
▫ Cleaning The Instrument Panel Cupholders . . . .301
 FUSES ............................... .302
▫ Underhood Fuses ...................... .302
▫ Interior Fuses ......................... .307
▫ Right Central Pillar Fuses .................310
 VEHICLE
STORAGE.....................311
7

ONBOARD DIAGNOSTIC SYSTEM — OBD II
Your vehicle is equipped with a sophisticated Onboard
Diagnostic system called OBD II. This system monitors the
performance of the emissions, engine, and automatic trans-
mission control systems. When these systems are operating
properly, your vehicle will provide excellent performance
and fuel economy, as well as engine emissions well within
current government regulations.
If any of these systems require service, the OBD II system
will turn on the “Malfunction Indicator Light (MIL).” It
will also store diagnostic codes and other information to
assist your service technician in making repairs. Although
your vehicle will usually be drivable and not need towing,
see your authorized dealer for service as soon as possible.
CAUTION!
•Prolonged driving with the MIL on could cause
further damage to the emission control system. It
could also affect fuel economy and driveability. The
vehicle must be serviced before any emissions tests
can be performed.
(Continued)
CAUTION! (Continued)
•If the MIL is flashing while the engine is running,
severe catalytic converter damage and power loss
will soon occur. Immediate service is required.
Onboard Diagnostic System (OBD II) Cybersecurity
Your vehicle is required to have an Onboard Diagnostic
system (OBD II) and a connection port to allow access to
information related to the performance of your emissions
controls. Authorized service technicians may need to ac-
cess this information to assist with the diagnosis and
service of your vehicle and emissions system.
WARNING!
• ONLY an authorized service technician should con-
nect equipment to the OBD II connection port in
order to diagnose or service your vehicle.
• If unauthorized equipment is connected to the OBD
II connection port, such as a driver-behavior tracking
device, it may:
• Be possible that vehicle systems, including safety
related systems, could be impaired or a loss of
(Continued)
278 MAINTAINING YOUR VEHICLE

WARNING!(Continued)
vehicle control could occur that may result in an
accident involving serious injury or death.
• Access, or allow others to access, information
stored in your vehicle systems, including personal
information.
For further information, refer to “Cybersecurity” in the
“Understanding Your Instrument Panel” section.
Loose Fuel Filler Cap Message
If the vehicle diagnostic system determines that the fuel
filler cap is loose, improperly installed, or damaged, a
“Check fuel cap” message will be displayed in the instru-
ment cluster display. Refer to “Instrument Cluster Display”
in ”Understanding Your Instrument Panel” for further
information. Tighten the gas cap until a clickingsound is
heard. This is an indication that the gas cap is properly
tightened.
Push the odometer reset button to turn the message off. If
the problem persists, the message will appear the next time
the vehicle is started. This might indicate a damaged cap. If
the problem is detected twice in a row, the system will turn
on the MIL. Resolving the problem will turn the MIL light
off.
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS
In some localities, it may be a legal requirement to pass an
inspection of your vehicle’s emissions control system.
Failure to pass could prevent vehicle registration.
For states that require an Inspection and Mainte-
nance (I/M), this check verifies the “Malfunction
Indicator Light (MIL)” is functioning and is not on
when the engine is running, and that the OBD II system is
ready for testing.
Normally, the OBD II system will be ready. The OBD II
system may notbe ready if your vehicle was recently
serviced, recently had a dead battery or a battery replace-
ment. If the OBD II system should be determined not ready
for the I/M test, your vehicle may fail the test.
Your vehicle has a simple ignition actuated test, which you
can use prior to going to the test station. To check if your
vehicle’s OBD II system is ready, you must do the following:
1. Cycle the ignition switch to the ON position, but do not crank or start the engine.
NOTE: If you crank or start the engine, you will have to
start this test over.
7
MAINTAINING YOUR VEHICLE 279

The A/C 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 tothe fresh air inlet, and remove the filter retainer.
2. Remove and replace the A/C air filter from the filter retainer. 3. Install the A/C 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.
Accessing Air Filter
1 — Screw Locations
2 — Fresh Air Inlet
Removing Air Filer
1 — Fresh Air Inlet
2 — A/C Air Filter
3 — A/C Air Filter Retainer
288 MAINTAINING YOUR VEHICLE

fluid level can be expected to fall as the brake pads wear.
However, low fluid level may be caused by a leak and a
checkup may be needed.
Use only manufacturer’s recommended brake fluid. Refer
to “Fluids, Lubricants, And Genuine Parts” in “Maintain-
ing Your Vehicle” for further information.
WARNING!
•Use only manufacturer’s recommended brake fluid.
Refer to “Fluids, Lubricants, And Genuine Parts” in
“Maintaining Your Vehicle” for further information.
Using the wrong type of brake fluid can severely
damage your brake system and/or impair its perfor-
mance. 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 mois-
ture, use only new brake fluid or fluid that has been
in a tightly closed container. Keep the master cylin-
der reservoir cap secured at all times. Brake fluid in
a open container absorbs moisture from the air
resulting in a lower boiling point. This may cause it
(Continued)
WARNING! (Continued)
to boil unexpectedly during hard or prolonged brak-
ing, 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 contaminate
the brake fluid. Brake seal components could be
damaged, causing partial or complete brake failure.
This could result in a collision.
Automatic Transmission (3.6L Gasoline Engine
Only)
Selection Of Lubricant
It is important to use the proper transmission fluid to
ensure optimum transmission performance and life. Use
only the manufacturer’s specified transmission fluid. Refer
to “Fluids, Lubricants, And Genuine Parts” in this section
for fluid specifications. It is important to maintain the
7
MAINTAINING YOUR VEHICLE 295

Adding Engine Coolant (Antifreeze).............291
Adding Fuel ............................. .227
Adding Washer Fluid ....................... .289
Additives, Fuel ........................... .225
AirBag ..................................31 Air Bag Operation .........................33
Enhanced Accident Response ................274
Event Data Recorder (EDR) .................274
If A Deployment Occurs ....................37
Knee Impact Bolsters .......................34
Maintaining Your Air Bag System ..............41
Air Bag Light .......................... .51, 103
Air Bag Maintenance .........................41
Air Cleaner, Engine (Engine Air Cleaner Filter) ......284
Air Conditioner Maintenance ..................286
Air Conditioning Filter ...................164, 287
Air Conditioning, Operating Tips ............163, 165
Air Conditioning Refrigerant ...............286, 287
Air Conditioning System .....................286
Air Pressure, Tires ......................... .209
Alarm (Security Alarm) .......................14
Alarm System (Security Alarm) .................14
Alterations/Modifications, Vehicle ................7
Antifreeze (Engine Coolant) ................291, 315
Disposal .............................. .293Anti-Lock Brake System (ABS)
.................191
Anti-Lock Warning Light .....................117
Appearance Care .......................... .297
Assist, Hill Start .......................... .197
Auto Down Power Windows ...................19
Automatic Door Locks ........................18
Automatic Transaxle .........................11
Automatic Transmission ..................177, 297
Adding Fluid ....................... .296, 297
Fluid And Filter Changes ...................297
Fluid Change .......................... .297
Fluid Level Check ....................... .296
Fluid Type ......................... .295, 317
Gear Ranges ........................... .180
Special

Additives ........................ .296
Battery .............................. .104, 286
Charging System Light ....................104
Keyless Key Fob Replacement ................16
Belts, Seat .................................51
Body Builders Guide ..........................6
Body Mechanism Lubrication ..................289
B-Pillar Location .......................... .204
Brake Assist System ........................ .193
Brake Control System, Electronic ................191
334 INDEX