2016 Ram 2500 service indicator

3. Oil Pressure Gauge•The pointer should always indicate some oil pres-
sure when the engine is running. A continuous high
or low reading under normal driving conditions may
indicate a lubrication system malfunction. Immedi-
ate service should be obtained from an authorized
dealer.
4. Speedometer •Indicates vehicle speed.
5. Fuel Gauge •The pointer shows the level of fuel in the fuel tank
when the ignition switch is in the ON/RUN position. 6. Driver Information Display (DID)
•When the appropriate conditions exist, this display
shows the Driver Information Display (DID) mes-
sages. Refer to “Driver Information Display” in
“Understanding Your Instrument Panel” for further
information.
7. DEF Gauge •The DEF Gauge displays the actual level of Diesel
Exhaust Fluid in the DEF tank. Diesel Exhaust Fluid
(DEF) is required to maintain normal vehicle opera-
tion and emissions compliance. If something is
wrong with the gauge, a DEF Warning Message or
Malfunction Indicator Light (MIL) will be displayed.
More information is available in the Electronic Ve-
hicle Information (EVIC) or Driver Information Dis-
play (DID) section under the heading of Diesel
Exhaust Fluid (DEF) Warning Messages.
188 UNDERSTANDING YOUR INSTRUMENT PANEL

NOTE:
•The gauge may take up to five seconds to update after
adding a gallon or more of Diesel Exhaust Fluid (DEF)
to the DEF tank. If you have a fault related to the DEF
system, the gauge may not update to the new level. See
your authorized dealer for service.
• The DEF gauge may also not immediately update after
a refill if the temperature of the DEF fluid is below 12F
(-11C). The DEF line heater will possibly warm up the
DEF fluid and allow the gauge to update after a period
of run time. Under very cold conditions, it is possible
that the gauge may not reflect the new fill level for
several drives.
• Outside temperature can affect DEF consumption. In
cold conditions, 12° F (-11° C) and below, the DEF
gauge needle can stay on a fixed position and may not
move for extended periods of time. This is a normal
function of the system.WARNING AND INDICATOR LIGHTS
IMPORTANT: The warning / indicator light switches on
in the instrument panel together with a dedicated mes-
sage and/or acoustic signal when applicable. These
indications are indicative and precautionary and as such
must not be considered as exhaustive and/or alternative
to the information contained in the Owner Manual,
which you are advised to read carefully in all cases.
Always refer to the information in this chapter in the
event of a failure indication.
All active telltales will display first if applicable. The
system check menu may appear different based upon
equipment options and current vehicle status. Some
telltales are optional and may not appear.
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UNDERSTANDING YOUR INSTRUMENT PANEL 189

Engine Temperature Warning Light
Red WarningLight What It Means
Engine Temperature Warning Light
This light warns of an overheated engine condition. As engine coolant temperatures rise and
the gauge approaches
H,this indicator will illuminate and a single chime will sound after
reaching a set threshold.
If the light turns on while driving, safely pull over and stop the vehicle. If the A/C system is on,
turn it off. Also, shift the transmission into NEUTRAL and idle the vehicle. If the temperature
reading does not return to normal, turn the engine off immediately and call for service. Refer to
“If Your Engine Overheats” in “What To Do In Emergencies” for further information.
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UNDERSTANDING YOUR INSTRUMENT PANEL 195

Yellow Telltale Indicator Lights
Engine Check/Malfunction Indicator Light (MIL)
Yellow TelltaleLight What It Means
Engine Check/Malfunction Indicator Light (MIL)
The Engine Check/Malfunction Indicator Light (MIL) is a part of an Onboard Diagnostic
System called OBD II that monitors engine and automatic transmission control systems. The
light will illuminate when the ignition is in the ON position before engine start. If the bulb
does not come on when turning the key from OFF to ON/RUN, have the condition checked
promptly.
Certain conditions, such as a loose or missing gas cap, poor quality fuel, etc., may illuminate
the light after engine start. The vehicle should be serviced if the light stays on through sev-
eral typical driving styles. In most situations, the vehicle will drive normally and will not
require towing.
When the engine is running, the MIL may flash to alert serious conditions that could lead to
immediate loss of power or severe catalytic converter damage. The vehicle should be ser-
viced as soon as possible if this occurs.
202 UNDERSTANDING YOUR INSTRUMENT PANEL

CAUTION!
Prolonged driving with the Malfunction Indicator
Light (MIL) on could cause damage to the engine
control system. It also could affect fuel economy and
driveability. If the MIL is flashing, severe catalytic
converter damage and power loss will soon occur.
Immediate service is required.
WARNING!
A malfunctioning catalytic converter, as referenced
above, can reach higher temperatures than in normal
operating conditions. This can cause a fire if you
drive slowly or park over flammable substances such
as dry plants, wood, cardboard, etc. This could result
in death or serious injury to the driver, occupants or
others.
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UNDERSTANDING YOUR INSTRUMENT PANEL 203

Service Stop/Start System Indicator Light — If Equipped
Yellow TelltaleLight What It Means
Service Stop/Start System Indicator Light
This telltale will turn on to indicate the Stop/Start system is not functioning properly and
service is required.
Air Suspension Off-Road 1 Indicator Light — If Equipped
Yellow Telltale
Light What It Means
Air Suspension Off-Road 1 Indicator Light
This light will illuminate when the air suspension system is set to the Off-Road 1 setting.
For further information, refer to “Air Suspension System” in “Starting And Operating”.
214 UNDERSTANDING YOUR INSTRUMENT PANEL

Service 4WD Indicator Light — If Equipped
Yellow TelltaleLight What It Means
Service 4WD Indicator Light
If the light stays on or comes on during driving, it means that the 4WD system is not func-
tioning properly and that service is required. We recommend you drive to the nearest ser-
vice center and have the vehicle serviced immediately.
2WD Indicator Light — If Equipped
Yellow Telltale
Light What It Means
2WD Indicator Light
This light alerts the driver that the vehicle is in the two-wheel drive mode.
218 UNDERSTANDING YOUR INSTRUMENT PANEL

clearing and resetting thePerform Serviceindicator
message is located in the appropriate Service Informa-
tion.
• Exhaust System — Regeneration Required Now —
Exhaust Filter XX% Full Safely Drive at Highway
Speeds to Remedy will be displayed in the Cluster if
the exhaust particulate filter reaches 80% of its maxi-
mum storage capacity. Under conditions of exclusive
short duration and low speed driving cycles, your
Cummins diesel engine and exhaust after-treatment
system may never reach the conditions required to
remove the trapped PM. If this occurs, the “Exhaust
Filter XX% Full Safely Drive at Highway Speeds to
Remedy” message will be displayed in the DID. If this
message is displayed, you will hear one chime to assist
in alerting you of this condition
• By simply driving your vehicle at highway speeds for
as little as 45 minutes, you can remedy the condition in the particulate filter system and allow your Cummins
diesel engine and exhaust after-treatment system to
remove the trapped PM and restore the system to
normal operating condition.
• Exhaust System — Regeneration In Process Exhaust
Filter XX% Full — Indicates that the Diesel Particulate
Filter (DPF) is self-cleaning. Maintain your current
driving condition until regeneration is completed.
• Exhaust System — Regeneration Completed — This
message indicates that the Diesel Particulate Filter
(DPF) self-cleaning is completed. If this message is
displayed, you will hear one chime to assist in alerting
you of this condition.
• Exhaust Service Required — See Dealer Now — This
messages indicates regeneration has been disabled due
to a system malfunction. At this point the engine
Powertrain Control Module (PCM) will register a fault
code, the instrument panel will display a MIL light.
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UNDERSTANDING YOUR INSTRUMENT PANEL 247