engine Ram 3500 2018 Quick Reference Guide

Adding Diesel Fuel And Diesel
Exhaust Fluid (DEF)• Ensure appropriate fluid is added to theapplicable fill port on the vehicle. The
smaller blue capped fill port is for DEF. The
cap-less green fill port is for diesel fuel only.
• If DEF or gasoline is accidentally added to the diesel fuel tank, DO NOT START the
engine. This will result in severe damage to
your engine, which is not covered by your
New Vehicle Limited Warranty. Have your
RAM towed to your authorized dealer for
service.
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 ENGINE STARTING
• Your RAM is equipped with state-of-the-art
ceramic glow plugs to ensure quick starts.
• Some delay of engine cranking may occur while the glow plugs reach operating tem-
perature. The length of time will vary from
1 to 5 seconds depending on the engine and
ambient temperatures.
• Remote start operation of your vehicle will also automatically activate the glow plugs as
needed and no additional steps are required.
With Engine ST ART/STOP Button
• To start your engine, press and hold the
brake pedal while pressing the ENGINE
START/STOP button once.
• When the “Wait to Start” telltale goes out in the instrument cluster, engine cranking will
begin automatically.
Fill Locations
1 — Diesel Exhaust Fluid (DEF) Fill
Location
2 — Diesel Fuel Fill Location
ADDING DIESEL FUEL AND
DEF RAM 1500 3.0L DIESEL

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

• By simply driving your vehicle at highwayspeeds for as little as 45 minutes, you
can remedy the condition in the particu-
late filter system and allow your diesel
engine and exhaust after-treatment sys-
tem to remove the trapped PM and re-
store the system to normal operating con-
dition.
• Exhaust System — Regeneration In Process
Exhaust Filter XX% Full
— Indicates that the
Diesel Particulate Filter (DPF) is self-
cleaning. Maintain your current driving condi-
tion until regeneration is completed.
• Exhaust System — Regeneration Completed —
This message indicates that the Diesel Par-
ticulate Filter (DPF) self-cleaning is com-
pleted. 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 message 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.
• Exhaust Filter Full — Power Reduced See
Dealer — This message indicates the PCM
has derated the engine to limit the likelihood
of permanent damage to the after-treatment
system. If this condition is not corrected and
a dealer service is not performed, extensive
exhaust after-treatment damage can occur.
To correct this condition it will be necessary
to have your vehicle serviced by your local
authorized dealer.
VISIT THE RAM BRAND SITE FOR
FURTHER INFORMATION
Download a FREE electronic copy of the Owner’s
Manual, Diesel Supplement, or Warranty Booklet
by visiting:
www.mopar.com/en-us/care/owners-manual.html
(U.S. Residents);
www.owners.mopar.ca (Canadian Residents).

2500/3500 AIR SUSPENSION SYSTEM
This air suspension system is a rear leveling ride
height system. The main purpose of this system
is to maintain the truck’s rear ride height level.
There are two selectable heights that can be
chosen based on your operating conditions.
The system requires that the ignition be in ON/
RUN position or the engine running with zero
vehicle speed for all user requested changes and
load leveling.
Normal Ride Height (NRH)– This is the standard
position of the suspension and is meant for
normal driving. It will automatically adjust
to maintain the rear ride height as conditions
change.
Alternate Trailer Height (A TH)– Lowers the ve-
hicle approximately 1 in (25 mm) for a level
truck, to be used as required while trailer tow-
ing. It will automatically adjust to maintain the
rear ride height as conditions change.
NOTE:
• Most 3500 models will not lower to Alter- nate Trailer Height (ATH) when unloaded.
• Refer to “Trailer Towing” in “Starting And Operating” in your Owner’s Manual at
www.mopar.com/en-us/care/owners-manual.html
(U.S. Residents) or www.owners.mopar.ca
(Canadian Residents) for further information.
Ignition OFF Behavior
For a predetermined amount of time after the
ignition is off the air suspension may adjust to
maintain a proper appearance. Trailer Decoupling/Unloading
The air suspension system will maintain load
level (lower/exhaust only) for up to 10 minutes
after the vehicle is turned off. This allows for
easy removal of a trailer and/or load from the
back of the truck by maintaining the ride
height. After 10 minutes, you will need to turn
the ignition to the RUN position for the air
suspension to maintain the ride height.
If the air suspension system is disabled using
the settings menu (Tire Jack Mode, Transport
Mode or Alignment Mode), the system will
remain disabled when the vehicle is turned off.
Reactivating the air suspension can be accom-
plished via the settings menu or by driving the
vehicle above 5 mph (8 km/h) for Tire Jack
Mode or Alignment Mode or 16 mph (26 km/h)
for Transport Mode.
Alternate Trailer Height Button
RAM 2500/3500