2016 Ram 2500 engine coolant

•Exhaust Filter Full – Power Reduced See Dealer — If
Equipped
• Exhaust Service Required – See Dealer Now — If
Equipped
• Exhaust System – Filter XX% Full Service Required See
Dealer — If Equipped
• Exhaust System – Regeneration In Process Exhaust
Filter XX% Full — If Equipped
• Exhaust System – Regeneration Completed — If
Equipped
• DEF Low Refill Soon
• Speed Limited to 5 MPH in XXX mi Refill DEF
• 5 MPH Max Speed on Restart, Long Idle or Refuel
Refill DEF
• 5 MPH Max Speed Refill DEF •
Service DEF System See Dealer
• 5 MPH Max Speed in XXX mi Service DEF System See
Dealer
• 5 MPH Max Speed on Restart, Long Idle or Refuel
Service DEF See Dealer
• 5 MPH Max Speed Service DEF System See Dealer
• Coolant Low
• Engine Power Reduced During Warmup
• Engine Power Reduced up to 30-sec During Warmup
• Engine Power Reduced up to 2-min During Warmup
• Active Airbox Service Required See Dealer
4
UNDERSTANDING YOUR INSTRUMENT PANEL 229

NOTE:The battery voltage may show a fluctuation at
various engine temperatures. This cycling operation is
caused by the post-heat cycle of the intake manifold
heater system. The number of cycles and the length of the
cycling operation is controlled by the engine control
module. Post-heat operation can run for several minutes,
and then the electrical system and voltmeter needle will
stabilize.
• Coolant Temp
Displays the actual coolant temperature.
• Oil Pressure
Displays the actual oil pressure.
• Trans Temperature
Displays the actual automatic transmission sump tem-
perature. •
Engine Hours
Displays the total hours of engine operation, and the
hours in drive and at idle.
• Oil Life
Displays the percentage of oil filter life remaining, and
the miles since the last reset.
• Fuel Filter Life
Displays the percentage of fuel filter life remaining, and
the miles since the last reset.
NOTE: Refer to Fuel Filter Life Reset in this section for
further information.
• Exhaust Brake
Displays the actual exhaust brake power.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 231

•Turbo Boost
Displays the actual turbo boost value.
• Tire Pressure Monitor System
Displays the actual tire pressure.
• Gauge Summary
Displays the coolant, trans, oil temp and oil pressure.
• Oil Temp
Displays the actual oil temperature.
Diesel Indicator Lights
Water In Fuel Indicator Light The “Water In Fuel Indicator Light” will illu-
minate when there is water detected in the fuel
filters. If this light remains on, DO NOT start
the vehicle before you drain the water from the fuel filters to prevent engine damage. Refer to “Mainte-
nance Procedures/Draining Fuel/Water Separator Fil-
ters” in “Maintaining Your Vehicle” for further informa-
tion.
Wait To Start Light
The “Wait To Start Light” will illuminate when the
ignition is turned to the RUN position and the
intake manifold temperature is below 66°F (19°C). Wait
until the “Wait To Start Light” turns OFF, then start the
vehicle. Refer to “Starting Procedures” in “Starting and
Operating” for further information.
NOTE: The “Wait To Start Light” may not illuminate if
the intake manifold temperature is warm enough.
Low Coolant Level Indicator
This telltale will turn on to indicate the vehicle
coolant level is low.
232 UNDERSTANDING YOUR INSTRUMENT PANEL

Cold Ambient Derate Mode Messages
The vehicle will display messages when a derate (engine
power reduction) is activated to protect the turbocharger
during engine start up in cold ambient temperatures.
•Engine Power Reduced During Warmup — This
message will display during start up when the ambi-
ent temperature is between 10° F (-12° C) and -10° F
(-23° C).
• Engine Power Reduced Up To 30 Sec (Seconds)
During Warmup — This message will display during
start up when the ambient temperature is between
-10° F (-23° C) and -25 F (-32° C).
• Engine Power Reduced Up To 2 Min (Minutes)
During Warmup — This message will display during
start up when the ambient temperature is -25° F
(-32° C) and below. •
Coolant Low — This telltale will turn on to indicate
the vehicle coolant level is low. See “Adding Coolant”
under the section “Maintaining Your Vehicle” for more
information.
Diesel Particulate Filter (DPF) Messages
The Cummins diesel engine meets all diesel emissions
standards, resulting in one of the lowest emitting diesel
engines ever produced. To achieve these emissions stan-
dards, your vehicle is equipped with a state-of-the-art
engine and exhaust system. These systems are seamlessly
integrated into your vehicle and managed by the Pow-
ertrain Control Module (PCM). The PCM manages en-
gine combustion to allow the exhaust system’s catalyst to
trap and burn Particulate Matter (PM) pollutants, with no
input or interaction on your part.
4
UNDERSTANDING YOUR INSTRUMENT PANEL 233

NOTE:The “Wait To Start” telltale may not illuminate if
the intake manifold temperature is warm enough.
Low Diesel Exhaust Fluid Light
This telltale will turn on to indicate the Diesel
Exhaust Fluid (DEF) is low.
Cold Ambient Derate Mode Messages
The vehicle will display messages when a derate (engine
power reduction) is activated to protect the turbocharger
during engine start up in cold ambient temperatures.
•Engine Power Reduced During Warmup — This
message will display during start up when the ambi-
ent temperature is between 10° F (-12° C) and -10° F
(-23° C). •
Engine Power Reduced Up To 30 Sec (Seconds)
During Warmup — This message will display during
start up when the ambient temperature is between
-10° F (-23° C) and -25 F (-32° C).
• Engine Power Reduced Up To 2 Min (Minutes)
During Warmup — This message will display during
start up when the ambient temperature is -25° F
(-32° C) and below.
• Coolant Low — This telltale will turn on to indicate
the vehicle coolant level is low. See “Adding Coolant”
under the section “Maintaining Your Vehicle” for more
information.4
UNDERSTANDING YOUR INSTRUMENT PANEL 245

5. After engine start-up, check to see that there is oilpressure.
6. Allow the engine to idle about three minutes until the manifold heaters have completed the post-heat cycle.
7. Release the parking brake and drive.
NOTE:
• Engine idle speed will automatically increase to 1,000
RPM and engage the Variable Geometry Turbocharger
at low coolant temperatures to improve engine warm-
up.
• The engine may not automatically crank after the
engine Wait To Start telltale goes off if a door or the
hood is ajar.
• If the engine stalls, or if the ignition switch is left ON
for more than two minutes after the “Wait To Start
Light” goes out, reset the grid heaters by turning the ignition switch to the OFF position for at least five
seconds and then back ON. Repeat steps 1 through 7 of
“Keyless Enter-N-Go Starting Procedure – Engine
Manifold Air Temperature Below 66° F (19° C).”
Extreme Cold Weather
The Cummins diesel engine is equipped with several
features designed to assist cold weather starting and
operation:
•
The engine block heater is a resistance heater installed
in the water jacket of the engine just above and behind
the oil filter. It requires a 110–115 Volt AC electrical
outlet with a grounded, three-wire extension cord.
NOTE: The engine block heater cord is a factory installed
option. If your vehicle is not equipped, heater cords are
available from your authorized MOPAR dealer.
5
STARTING AND OPERATING 265

2. While theWait To Start” telltale is on, the EVIC/DID
will additionally display a gauge or bar whose initial
length represents the full Wait To Starttime period.
Its length will decrease until it disappears when the
Wait To Start time has elapsed.
CAUTION!
If the “Water in Fuel Indicator Light” remains on, DO
NOT START engine before you drain the water from
the fuel filters to avoid engine damage. Refer to
“Maintenance Procedures/Draining Fuel/Water Sepa-
rator Filter” in “Maintaining Your Vehicle” for fur-
ther information.
3. After the “Wait To Start” telltale goes off, turn the ignition switch to the START position. Do not press the
accelerator during starting.
CAUTION!
Do not crank engine for more than 15 seconds at a
time or starter motor damage may result. Turn the
ignition switch to the OFF position and wait at least
two minutes for the starter to cool before repeating
start procedure.
4. After engine start-up, check that the oil pressure warning light has turned off.
5. Allow the engine to idle about three minutes until the manifold heaters have completed the post-heat cycle.
6. Release the parking brake and drive.
NOTE:
• Engine idle speed will automatically increase to 1,000
RPM and engage the Variable Geometry Turbocharger
at low coolant temperatures to improve engine warm-
up.
268 STARTING AND OPERATING

NOTE:Excessive white smoke and poor engine perfor-
mance will result if manifold heaters are not recycled.
2. Heat generated by the manifold heaters dissipates rapidly in a cold engine. If more than two minutes
pass between the time the “Wait To Start” telltale turns
off and the engine is started, recycle the manifold
heaters by turning the ignition switch to the OFF
position for at least five seconds and then back ON.
3. If the vehicle is driven and vehicle speed exceeds 19 mph (31 km/h) before the manifold heater post-
heat (after start) cycle is complete, the manifold heat-
ers will shut off.
4. If the engine is started before the “Wait To Start” telltale turns off, the preheat cycle will turn off.
5. If the engine is cranked for more than 10 seconds, the post-heat cycle will turn off. NOTE:
•
Engine idle speed will automatically increase to 1,000
RPM and engage the Variable Geometry Turbocharger
at low coolant temperatures to improve engine warm-
up.
• When a diesel engine is allowed to run out of fuel or
the fuel gels at low temperatures, air is pulled into the
fuel system. If your engine has run out of fuel, refer to
“Maintenance Procedures/Priming If The Engine Has
Run Out Of Fuel” in “Maintaining Your Vehicle” for
further information.
• If the engine stalls, or if the ignition switch is left ON
for more than two minutes after the “Wait To Start”
telltale goes out, reset the grid heaters by turning the
ignition switch to the OFF position for at least five
seconds and then back ON. Repeat steps 1 through 5 of
“Starting Procedure – Engine Manifold Air Tempera-
ture Below 66°F (19°C).”
270 STARTING AND OPERATING