2017 RAM CHASSIS CAB fuel

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

WARNING!You can be badly injured working on or around a
motor vehicle. Only do service work for which you
have the knowledge and the proper equipment. If you
have any doubt about your ability to perform a service
job, take your vehicle to a competent mechanic.
MAINTENANCE PROCEDURES
The pages that follow contain the required maintenance
services determined by the engineers who designed your
vehicle.
Besides those maintenance items specified in the fixed
“Maintenance Schedule”, there are other components
which may require servicing or replacement in the future.
CAUTION!• Failure to properly maintain your vehicle or perform
repairs and service when necessary could result in
more costly repairs, damage to other components or
negatively impact vehicle performance. Immediately (Continued) CAUTION! (Continued)have potential malfunctions examined by an autho-
rized dealer or qualified repair center.
• Your vehicle has been built with improved fluids
that protect the performance and durability of your
vehicle and also allow extended maintenance inter-
vals. Do not use chemical flushes in these compo-
nents as the chemicals can damage your engine,
transmission, or air conditioning. Such damage is not
covered by the New Vehicle Limited Warranty. If a
flush is needed because of component malfunction,
use only the specified fluid for the flushing proce-
dure.
Engine Oil
Checking Oil Level
To assure proper lubrication of your vehicle’s engine, the
engine oil must be maintained at the correct level. Check
the oil level at regular intervals, such as every fuel stop.
The best time to check the engine oil level is about five
minutes after a fully warmed up engine is shut off. 7MAINTAINING YOUR VEHICLE 451

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 ex-
haust system and adjacent body areas for broken, dam-
aged, 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 lubri-
cation or oil change. Replace as required.
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. To avoid breathing CO, refer
to “Safety Tips/Exhaust Gas” in “Things To Know
Before Starting Your Vehicle” for further informa-
tion. (Continued) WARNING! (Continued)• A hot exhaust system can start a fire if you park over
materials that can burn. Such materials might be
grass or leaves coming 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 effective-
ness 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 condition. In
the event of engine malfunction, particularly involv-
ing engine misfire or other apparent loss of perfor-
mance, have your vehicle serviced promptly. Contin-
ued operation of your vehicle with a severe
malfunction could cause the converter to overheat,
resulting in possible damage to the converter and
vehicle.470 MAINTAINING YOUR VEHICLE

Cavity Cartridge Fuse Micro Fuse Description
F09 40 Amp Green
(Special Services
Vehicle & Cummins
Diesel) – Diesel Fuel Heater – If Equipped
F10 40 Amp Green – Body Controller / Exterior Lighting #2
F10 50 Amp Red – Body Controller / Exterior Lighting #2 –
If Equipped with Stop/Start
F11 30 Amp Pink – Integrated Trailer Brake Module – If Equipped
F12 40 Amp Green – Body Controller #3 / Power Locks
F13 40 Amp Green – Blower Motor
F14 40 Amp Green – Body Controller #4 / Interior Lighting
F16 30 Amp Pink – Smart Bar – If Equipped
F19 20 Amp Blue
(1500 LD Diesel)
30 Amp Pink
(Cummins Diesel) – SCR – If Equipped
F20 30 Amp Pink – Passenger Door Module
F21 30 Amp Pink – Drive Train Control Module
F22 20 Amp Blue
30 Amp Pink
(Cummins Diesel) – Engine Control Module488 MAINTAINING YOUR VEHICLE

Cavity Cartridge Fuse Micro Fuse Description
F23 30 Amp Pink – Body Controller #1 / Interior Lighting
F24 30 Amp Pink – Driver Door Module
F25 30 Amp Pink – Front Wiper
F26 30 Amp Pink – Antilock Brakes / Stability Control Module /
Valves
F28 20 Amp Blue – Trailer Tow Backup Lights – If Equipped
F29 20 Amp Blue – Trailer Tow Parking Lights – If Equipped
F30 30 Amp Pink – Trailer Tow Receptacle
F31 30 Amp Pink
(1500 LD Diesel) – Urea Heater Control – If Equipped
F32 – – Spare Fuse
F33 20 Amp Blue – Special Services Vehicle Only
F34 30 Amp Pink – Vehicle System Interface Module #2 –
If Equipped
F35 30 Amp Pink – Sunroof – If Equipped
F36 30 Amp Pink – Rear Defroster – If Equipped
F37 30 Amp Pink – Cummins Diesel Fuel Heater #2 – If Equipped
F38 30 Amp Pink – Power Inverter 115V AC – If Equipped
F39 20 Amp Blue – Power Outlet – Special Services Only
F41 – 10 Amp Red Active Grill Shutter – If Equipped 7MAINTAINING YOUR VEHICLE 489

Cavity Cartridge Fuse Micro Fuse Description
F63 – 20 Amp Yellow Ignition Coils (Gas), Urea Heater
(Cummins Diesel)
F64 – 25 Amp Clear Fuel Injectors / Powertrain
F65 – – Spare Fuse
F66 – 10 Amp Red Sunroof / Passenger Window Switches /
Rain Sensor
F67 – 10 Amp Red CD / DVD / Bluetooth Hands-free Module –
If Equipped
F69 – 15 Amp Blue Mod SCR 12V (Cummins Diesel) – If Equipped
F70 – 30 Amp Green Fuel Pump Motor
F71 – 25 Amp Clear Amplifier
F72 – 10 Amp Red PCM – If Equipped
F73 – 20 Amp Yellow Fuel Transfer Pump (HD Only) – If Equipped
F74 – 20 Amp Yellow
(Gas Engine &
1500 LD Diesel) Brake Vacuum Pump Gas/Diesel – If Equipped
F75 – 10 Amp Red Coolant Temperature Valve Actuator
F76 – 10 Amp Red Antilock Brakes / Electronic Stability Control
F77 – 10 Amp Red Drivetrain Control Module/Front Axle
Disconnect Module 7MAINTAINING YOUR VEHICLE 491