2020 Ram 2500 OBD port

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SLIDE-IN CAMPERS .......................................... 100 Camper Applications .................................100
EASY-OFF TAILGATE ......................................... 100
Disconnecting The Rear Camera And
Remote Keyless Entry ...............................100 Removing The Tailgate .............................. 101
Locking Tailgate .........................................101
TRI-FOLD TONNEAU COVER — IF EQUIPPED .. 101
Tri-Fold Tonneau Cover Removal ..............102
Tri-Fold Tonneau Cover Installation ..........104
Tri-Fold Tonneau Cover Cleaning ..............107
GETTING TO KNOW YOUR INSTRUMENT PANEL
BASE / MIDLINE INSTRUMENT CLUSTER —
GAS ENGINE ....................................................... 108
Base / Midline Instrument Cluster
Descriptions — Gas Engine .......................109
PREMIUM INSTRUMENT CLUSTER —
GAS ENGINE ....................................................... 111
Premium Instrument Cluster Descriptions —
Gas Engine .................................................112
BASE INSTRUMENT CLUSTER — DIESEL
ENGINE ............................................................... 113
Base Instrument Cluster Descriptions —
Diesel Engine .............................................114
PREMIUM INSTRUMENT CLUSTER — DIESEL
ENGINE ................................................................ 116
Premium Instrument Cluster Descriptions —
Diesel Engine .............................................117 INSTRUMENT CLUSTER DISPLAY ................... 117
Instrument Cluster Display Controls......... 118
Oil Life Reset ............................................. 119
Display Menu Items ................................... 119
Diesel Messages And Warnings — 6.7L
Cummins Diesel Engine ............................ 124 Battery Saver On/Battery Saver Mode
Message — Electrical Load Reduction
Actions — If Equipped ................................ 128
WARNING LIGHTS AND MESSAGES ................130
Red Warning Lights ................................... 130
Yellow Warning Lights ............................... 133
Yellow Indicator Lights .............................. 137
Green Indicator Lights ............................... 140
White Indicator Lights ............................... 141
Blue Indicator Lights.................................. 141
ONBOARD DIAGNOSTIC SYSTEM — OBD II..... 141
Onboard Diagnostic System (OBD II)
Cybersecurity ............................................. 142
EMISSIONS INSPECTION AND MAINTENANCE
PROGRAMS......................................................... 142
SAFETY
SAFETY FEATURES .............................................144
Anti-Lock Brake System (ABS) ................. 144
Electronic Brake Control (EBC) System .... 145 AUXILIARY DRIVING SYSTEMS ........................ 153
Blind Spot Monitoring (BSM) —
If Equipped ................................................ 153 Forward Collision Warning (FCW) With
Mitigation — If Equipped ........................... 160 Tire Pressure Monitoring System
(TPMS) ........................................................ 163
OCCUPANT RESTRAINT SYSTEMS ................. 171
Occupant Restraint Systems Features ... 171
Important Safety Precautions ................... 171
Seat Belt Systems .................................... 172
Supplemental Restraint Systems (SRS)... 181
Child Restraints ......................................... 190
Transporting Pets ...................................... 208
SAFETY TIPS ....................................................... 208
Transporting Passengers .......................... 208
Exhaust Gas .............................................. 208
Safety Checks You Should Make Inside
The Vehicle ................................................ 209 Periodic Safety Checks You Should Make
Outside The Vehicle ................................... 210

20_DJD2_OM_EN_USC_t.book Page 4

142GETTING TO KNOW YOUR INSTRUMENT PANEL
technician in making repairs. Although your
vehicle will usually be drivable and not need
towing, see an authorized dealer for service as
soon as possible.
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 diag-
nosis and service of your vehicle and emissions
system. For further information, refer to “Cybersecurity”
in “Multimedia”.
EMISSIONS INSPECTION AND
MAINTENANCE PROGRAMS
In some localities, it may be a legal requirement
to pass an inspection of your vehicle's emis
-sions control system. Failure to pass could
prevent vehicle registration.
For states that require an Inspection
and Maintenance (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 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 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.
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 vehicle is
running, severe catalytic converter damage
and power loss will soon occur. Immediate
service is required.
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 acci -
dent involving serious injury or death.
Access, or allow others to access, infor -
mation stored in your vehicle systems,
including personal information.

20_DJD2_OM_EN_USC_t.book Page 142