RAM Commercial CHASSIS CAB 3500 2021 Owner's Manual page 104

102 GETTING TO KNOW YOUR INSTRUMENT PANEL
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 instru-
ment cluster display it is necessary to have the
emissions maintenance performed. Emissions
maintenance may include replacing the
Closed Crankcase Ventilation (CCV) filter
element. The procedure for clearing and reset-
ting 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 exclu-
sive 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
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
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
DPF is self-cleaning. Maintain your current
driving condition until regeneration is
completed.
Exhaust System — Regeneration Completed —

This message indicates that the 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 message indicates regeneration
has been disabled due to a system malfunc-
tion. At this point the engine Powertrain
Control Module (PCM) will register a fault code,
the instrument panel will display a MIL light.
CAUTION!
See an authorized dealer, as damage to
the exhaust system could occur soon with
continued operation.