OBD port Ram 3500 Chassis Cab 2019 Owner's Manual

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WARNING LIGHTS AND MESSAGES ........................ 146
Red Warning Lights .................................................... 146
Yellow Warning Lights............................................... 150
Yellow Indicator Lights .............................................. 155
Green Indicator Lights ................................................ 156
White Indicator Lights ................................................ 157
Blue Indicator Lights ................................................... 158
 ONBOARD DIAGNOSTIC SYSTEM — OBD II ........ 158
Onboard Diagnostic System (OBD II)
Cybersecurity ............................................................... 159
 EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS ..................................................................... 159
SAFETY
SAFETY FEATURES ......................................................... 161
Anti-Lock Brake System (ABS) ................................. 161
Electronic Brake Control System .............................. 162
 AUXILIARY DRIVING SYSTEMS .................................. 174
Forward Collision Warning (FCW) With Mitigation —
If Equipped ................................................................... 174
Tire Pressure Monitoring System (TPMS) ............ 177 
OCCUPANT RESTRAINT SYSTEMS ...........................187
Occupant Restraint Systems Features ......................187
Important Safety Precautions.....................................188
Seat Belt Systems .........................................................189
Supplemental Restraint Systems (SRS).....................202
Child Restraints ..........................................................214
Transporting Pets ......................................................240
 SAFETY TIPS ...................................................................240
Transporting Passengers ............................................240
Exhaust Gas ..............................................................240
Safety Checks You Should Make Inside The
Vehicle ..........................................................................241
Periodic Safety Checks You Should Make Outside The
Vehicle ...........................................................................243
STARTING AND OPERATING
STARTING THE ENGINE ..............................................244
Automatic Transmission.............................................245
Tip Start Feature ..........................................................245
Keyless Enter-N-Go — Ignition ................................. 245
Normal Starting Using ENGINE START/STOP
Button .........................................................................246

Cold Weather Operation (Below –22°F Or −30°C) ... 250

After Starting ................................................................250
 ENGINE BLOCK HEATER — IF EQUIPPED............... 251

GETTING TO KNOW YOUR INSTRUMENT PANEL 159
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 access
this information to assist with the diagnosis and service of
your vehicle and emissions system.
For further information, refer to “Cybersecurity” in “Multi-
media”.
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, recently had a depleted 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.
WARNING!
• ONLY an authorized service technician should connect equipment to the OBD II connection port in order to
read the VIN, 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.

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