Dodge RAM 1500 2018 Diesel Supplement page 111

engine and exhaust system. These systems are seamlessly
integrated into your vehicle and managed by the Pow-
ertrain Control Module (PCM). The PCM manages engine
combustion to allow the exhaust system's catalyst to trap
and burn Particulate Matter (PM) pollutants, with no input
or interaction on your part.
WARNING!
A hot exhaust system can start a fire if you park over
materials that can burn. Such materials might be grass or
leaves coming into contact with your exhaust system. Do
not park or operate your vehicle in areas where your
exhaust system can contact anything that can burn.
Your vehicle has the ability to alert you to additional
maintenance required on your vehicle 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 instrument cluster display
will display "Perform Service". When the "Perform
Service" message is displayed in the instrument cluster
GETTING TO KNOW YOUR INSTRUMENT PANEL 109
display it is necessary to have the emissions mainte-
nance performed. Emissions maintenance may include
replacing the Closed Crankcase Ventilation (CCV) filter
element. The procedure for clearing and resetting the
Perform Service indicator message is located in the
appropriate Service Information.
• Exhaust System — Regeneration Required Now —
Exhaust Filter XX% Full Safely Drive at Highway
Speeds to Remedy will be displayed in the instrument
cluster display if the exhaust particulate filter reaches
80% of its maximum 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 re-
quired 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 highway speeds for as
little as 45 minutes, you can remedy the condition in the
particulate filter system and allow your Cummins diesel
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