2017 RAM CHASSIS CAB ECU

MAINTAINING YOUR VEHICLECONTENTS  ENGINE COMPARTMENT — 6.4L .......... .447
 ONBOARD DIAGNOSTIC SYSTEM (OBD II) . . . .448
▫ Onboard Diagnostic System (OBD II)
Cybersecurity ........................ .448
▫ Loose Fuel Filler Cap Message ............ .449
 EMISSIONS INSPECTION AND
MAINTENANCE PROGRAMS ............. .449
 REPLACEMENT PARTS .................. .450
 DEALER SERVICE ...................... .450
 MAINTENANCE PROCEDURES ............ .451
▫ Engine Oil .......................... .451
▫ Engine Oil Filter ...................... .453
▫ Engine Air Cleaner Filter ................ .454
▫ Accessory Drive Belt Inspection ........... .456
▫ Maintenance-Free Battery ................ .458 ▫ Air Conditioner Maintenance ............. .459
▫ Front Prop Shaft Lubrication —
Four-Wheel Drive Models ................ .465
▫ Body Lubrication ..................... .466
▫ Windshield Wiper Blades ................ .466
▫ Adding Washer Fluid .................. .469
▫ Exhaust System ....................... .470
▫ Cooling System ....................... .471
▫ Brake System ........................ .475
▫ Rear Axle And 4x4 Front Driving Axle
Fluid Level .......................... .476
▫ Transfer Case ........................ .477
▫ Automatic Transmission — If Equipped ..... .478
▫ Appearance Care And Protection From
Corrosion ........................... .4807

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.
• 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
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.448 MAINTAINING YOUR VEHICLE

For further information, refer to “Privacy Practices — If
Equipped With Uconnect 8.4 Radio” and “Uconnect Cy-
berSecurity” in “All About Uconnect Access” in your
Owner ’s Manual Radio Supplement and “Cybersecurity”
in “Understanding Your Instrument Panel”.
Loose Fuel Filler Cap Message
If the vehicle diagnostic system determines that
the fuel filler cap is loose, improperly installed,
or damaged, a loose gascap indicator will dis-
play in the instrument cluster telltale display
area. Refer to “Instrument Cluster Display” in “Under-
standing Your Instrument Panel” for further information.
Tighten the fuel filler cap properly and push the SELECT
button to turn off the message. If the problem continues,
the message will appear the next time the vehicle is started.
A loose, improperly installed, or damaged fuel filler cap
may also turn on the Malfunction Indicator Light (MIL). 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 not be ready if your vehicle was recently
serviced, or recently had a dead battery or a battery
replacement. 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 follow-
ing:
1. Cycle the ignition to the ON mode, but do not crank or
start the engine.
NOTE: If you crank or start the engine, you will have to
start this test over. 7MAINTAINING YOUR VEHICLE 449

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.
Use only the manufacturer’s recommended brake fluid.
Refer to “Fluids, Lubricants, And Genuine Parts” in “Main-
taining 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.
Rear Axle And 4x4 Front Driving Axle Fluid Level
For models with 9.25 in Front Axles and 11.5 in Rear Axles,
refer to “Fluids, Lubricants, And Genuine Parts” in “Main-
taining Your Vehicle” for further information. For normal
service, periodic fluid level checks are not required. When
the vehicle is serviced for other reasons, the exterior
surfaces of the axle assembly should be inspected.
When checking the fluid level (4500/5500 only), the vehicle
should be in a level position. The fluid level should be ¼ in476 MAINTAINING YOUR VEHICLE

BULB REPLACEMENT
NOTE: Lens fogging can occur under certain atmospheric
conditions. This will usually clear as atmospheric condi-
tions change to allow the condensation to change back into
a vapor. Turning the lamps on will usually accelerate the
clearing process.
Base Quad / Premium Bi-Halogen: Low Beam
Headlamp, High Beam Headlamp, Front Park And
Turn — If Equipped
1. Open the hood.
2. Disconnect and isolate the negative battery cable.
3. Remove the six plastic push-in fasteners that secure the
upper radiator seal to the grille support and both fender
ledges.
4. Remove the two plastic push-in rivets that secure the
upper radiator seal to the radiator.
5. Remove the upper radiator seal from the vehicle. 6. Remove the two headlamp assembly attachment screws.
7. Reach into the front wheel house ahead of the front
wheel, remove the fastener, and lift the cover over the
access hole in the front of the wheel house splash shield.
Access to the rear of the lamp can be gained through this
access hole. Headlamp Assembly Attachment Screw Locations 7MAINTAINING YOUR VEHICLE 495

Adding Engine Coolant (Antifreeze) ............ .472
Adding Fuel ............................. .400
Additives, Fuel ........................... .399
Adjust
Down ..............................111,112
Forward ............................110,111
Rearward ...........................110,111
Up................................111,112
Adjustable Pedals ......................... .137
Air Bag
Air Bag Operation .........................58
Air Bag Warning Light .....................55
Enhanced Accident Response ............. .64, 444
Event Data Recorder (EDR) ................ .444
If A Deployment Occurs ....................63
Knee Impact Bolsters .......................59
Maintaining Your Air Bag System ..............65
Side Air Bags ............................59
Transporting Pets .........................89
Air Bag Light ....................... .55, 92, 197
Air Bag Maintenance .........................65
Air Cleaner, Engine (Engine Air Cleaner Filter) ..... .454
Air Conditioner Maintenance ................. .459
Air Conditioning .......................... .277
Air Conditioning Controls ................... .277 Air Conditioning Filter .................. .291, 460
Air Conditioning, Operating Tips .............. .291
Air Conditioning Refrigerant .............. .459, 460
Air Conditioning System .............. .277, 290, 459
Air Pressure, Tires ......................... .377
Alarm, Panic ...............................25
Alarm (Security Alarm) ................... .20, 199
Alarm System (Security Alarm) .................20
Alterations/Modifications, Vehicle ................7
Antifreeze (Engine Coolant) .................. .472
Capacities ............................. .500
Disposal .............................. .474
Anti-Lock Brake System (ABS) ................ .353
Appearance Care .......................... .480
Ashtray ................................ .173
Assist, Hill Start .......................... .355
Auto Down Power Windows ...................39
Automatic Door Locks ........................33
Automatic Headlights ...................... .125
Automatic High Beams ..................... .126
Automatic Temperature Control (ATC) .......... .290
Automatic Transmission ..................... .478
Adding Fluid .......................... .479
Fluid And Filter Changes .................. .480
Fluid Level Check ....................... .479518 INDEX

Low Fuel ............................. .210
Malfunction Indicator (Check Engine) ......... .204
Park ................................. .215
Passing ............................... .132
Seat Belt Reminder ...................... .197
Security Alarm ......................... .199
Service ............................ .494, 495
Tire Pressure Monitoring (TPMS) ......... .208, 390
Traction Control ........................ .361
Transfer Case .......................... .341
Turn Signal ................... .94, 132, 216, 495
Warning (Instrument Cluster Description) . . . .200, 216
Limited-Slip Differential ................. .346, 477
Loading Vehicle ........................... .401
Tires................................. .371
Load Shed
Battery Saver Mode ...................... .232
Battery Saver On ........................ .232
Electrical Load Reduction .................. .232
Intelligent Battery Sensor .................. .232
Locks ....................................31
Automatic Door ..........................33
Child Protection ..........................34
Door ..................................31
Power Door .............................32 Low Tire Pressure System .................... .390
Lubrication, Body ......................... .466
Lug Nuts ......................... .427, 433, 434
Maintenance Free Battery .................... .458
Maintenance Procedures ..................... .451
Maintenance Schedule ...................... .506
Malfunction Indicator Light (Check Engine) . . . .204, 449
Manual, Service ........................... .516
Manual Transmission
Fluid Level Check ....................... .478
Memory Seat ..............................119
Methanol ............................... .397
Mirrors ..................................99
Electric Powered ........................ .106
Heated ............................... .107
Memory ............................... 1 19
Outside .............................. .105
Rearview ........................... .99, 104
Trailer Towing .......................... .109
Modifications/Alterations, Vehicle ................7
Monitor, Tire Pressure System ................. .390
MOPAR Parts ......................... .450, 515
MTBE/ETBE ............................. .39710 INDEX 525

Restraints, Child ............................66
Rotation, Tires ............................ .387
Safety Checks Inside Vehicle ...................92
Safety Checks Outside Vehicle ..................94
Safety Defects, Reporting .................... .515
Safety, Exhaust Gas ..........................91
Safety Information, Tire ..................... .365
Safety Tips ................................91
Schedule, Maintenance ...................... .506
Seat Belt
Adjustable Upper Shoulder Belt Anchorage .......48
Automatic Locking Retractor (ALR) ............53
Lap/Shoulder Belt Operation .................46
Lap/Shoulder Belt Untwisting ................47
Pregnant Women .........................52
Seat Belt Extender .........................51
Seat Belt Pretensioner ......................52
Seat Belt Reminder ........................42
Seat Belt Maintenance ...................... .485
Seat Belt Reminder ..........................42
Seat Belts ............................. .42, 92
Adjustable Shoulder Belt ....................48
Adjustable Upper Shoulder Anchorage ..........48
Child Restraint ...........................66 Extender ...............................51
Front Seat ........................... .42, 46
Inspection ..............................92
Operating Instructions ......................46
Pregnant Women .........................52
Pretensioners ............................52
Reminder ............................. .197
Untwisting Procedure ......................47
Seats .............................110,111,116
Adjustment ..........................110,111
Easy Entry ............................ .122
Folding Floor .......................... .183
Memory ...............................119
Power ................................110
Reclining Rear ...........................116
Security Alarm ......................... .20, 199
Selection Of Coolant (Antifreeze) .............. .501
Sentry Key
Key Programming .........................19
Sentry Key (Immobilizer) ......................18
Sentry Key Replacement ......................19
Service Assistance ......................... .512
Service Contract .......................... .514
Service Manuals .......................... .516
Settings, Personal ......................... .226528 INDEX