Blue Indicator Lights; Onboard Diagnostic System - Obd Ii; Onboard Diagnostic System (Obd Ii) Cybersecurity - RAM 1500 2019 User Manual

— Hill Descent Control (HDC) Indicator
Light — If Equipped
This indicator shows when the Hill Descent
Control (HDC) feature is turned on. The lamp
will be on solid when HDC is armed. HDC can
only be armed when the transfer case is in
the "4WD LOW" position and the vehicle
speed is less then 20 mph (32 km/h). If
these conditions are
attempting to use the HDC feature, the HDC
indicator light will flash on/off.
— LaneSense Indicator Light — If
Equipped
When the LaneSense system is ON, but not
armed, the LaneSense indicator light illumi-
nates solid white. This occurs when only left,
right, or neither lane line has been detected.
If a single lane line is detected, the system is
ready to provide only visual warnings if an
unintentional lane departure occurs on the
detected lane line.
Refer to "LaneSense — If Equipped" in
"Starting And Operating" for further informa-
tion.
78

Blue Indicator Lights

— High Beam Indicator Light
This indicator light will illuminate to indicate
that the high beam headlights are on. With
the low beams activated, push the multi-
function lever forward (toward the front of
the vehicle) to turn on the high beams. Pull
the multifunction lever rearward (toward the
not met while
rear of the vehicle) to turn off the high
beams. If the high beams are off, pull the
lever toward you for a temporary high beam
on, "flash to pass" scenario.
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 transmission 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 govern-
ment regulations.
If any of these systems require service, the
OBD II system will turn on the Malfunction
Indicator Light (MIL). It will also store diag-
nostic codes and other information to assist
your service 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.
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
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
access this information to assist with the
diagnosis and service of your vehicle and
emissions system.
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