service interval Ram 2500 2018 Quick Reference Guide

Without Engine START/STOP Button
(Keyed Ignition)
• Turn the ignition key to the “ON” position
and wait for the “Wait to Start” telltale to
extinguish before cranking the engine.
For further information, and applicable warnings
and cautions, please refer to the Diesel Supplement
at www.mopar.com/en-us/care/owners-manual.html
(U.S. Residents) orwww.owners.mopar.ca(Cana-
dian Residents).
OPERATING YOUR DIESEL ENGINE IN
VERY COLD ENVIRONMENTS
• A winter front or cold weather cover is to be used in ambient temperatures below 32°F
(0°C), especially during extended idle con-
ditions to reduce condensation build-up
within the engine crankcase. If a winter front
or cold weather cover is to be used, a per-
centage of the total grille opening area must
be left uncovered to provide sufficient air
flow to the charge air cooler and automatic transmission oil cooler. The percentage of
opening must be increased with the increas-
ing ambient air temperature and/or engine
load. If the cooling fan can be heard cycling
frequently, increase the size of the opening
in the winter front. A suitable cold weather
cover is available from your MOPAR
®dealer.
• Climatized fuel or fuel treatment may be required for operation in temperatures under
-10°F (-23°C).
• Use of an engine block heater is recom- mended for routine operation under -10°F
(-23°C) and is required for cold starting
under -20°F (-28°C). If your vehicle is not
equipped with the electrical cord for the
block heater, it is available from your Mopar
dealer.
For further information, and applicable warnings
and cautions, please refer to the Diesel Supplement
at www.mopar.com/en-us/care/owners-manual.html
(U.S. Residents) or www.owners.mopar.ca (Cana-
dian Residents).
Diesel Selective Catalytic
Reduction (SCR)/Diesel Particulate
Filter (DPF)
• Your RAM is equipped with an SCR system toreduce Nitrous Oxides (NOx) exhaust emis-
sions.
• The SCR system uses Diesel Exhaust Fluid (DEF) to convert NOx to harmless gases prior
to release from the exhaust system.
• It is recommended that DEF is refilled by your authorized RAM dealer at every oil
change interval or as required.
• A DEF level gauge is located on your instru- ment cluster.
• The DEF gauge may take up to 5 seconds to update after adding a gallon or more of
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.

• Also the DEF gauge may also not imme-diately update after a refill if the tem-
perature of the DEF fluid is below 12°F
(-11°C). The DEF line heater will usually
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.
• Should you run your vehicle out of DEF, a minimum of 2 gallons (7.6 liters) of DEF is
required for the engine to restart.
•
Never “top-off” the DEF tank after a normal
DEF fill. If DEF is spilled, it should be cleaned
with mild soap and water to prevent corrosion or
damage to components and finished surfaces.
• Your RAM is also equipped with a Diesel Particulate Filter (DPF) that removes diesel
particulate matter or soot from the exhaust
gas. Automatic regeneration self-cleaning
cycles occur when the correct operating con-
ditions are met. • The instrument cluster display will indicate
when a regeneration is in progress and will
provide instructions if any action is required.
For further information, and applicable warnings
and cautions, please refer to the Diesel Supplement
at www.mopar.com/en-us/care/owners-manual.html
(U.S. Residents) orwww.owners.mopar.ca (Cana-
dian Residents).
Diesel Particulate Filter (DPF)
Messages
Your vehicle has the ability to alert you to
additional maintenance required on your ve-
hicle or engine. The following messages may
display in your Instrument Cluster Display:
• Perform Service — Your vehicle will require
emissions maintenance at a set interval.
To help remind you when this maintenance
is due, the Cluster will display “Perform
Service”. When the “Perform Service” mes-
sage is displayed in the Instrument Cluster Display it is necessary to have the emissions
maintenance performed. The procedure for
clearing and resetting the “Perform Service”
indicator message is located in the appropri-
ate Service Information.
• Exhaust System — Regeneration Required
Now— Exhaust Filter XX% Full Safely Drive
at Highway Speeds to Remedy will be dis-
played in the Cluster if the exhaust particu-
late filter reaches 80% of its maximum stor-
age capacity. Under conditions of exclusive
short duration and low speed driving cycles,
your diesel engine and exhaust after-
treatment system may never reach the con-
ditions 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 Instrument
Cluster Display. If this message is displayed,
you will hear one chime to assist in alerting
you of this condition