Diesel Exhaust Fluid - Jeep Grand Cherokee User Manual

DIESEL
Exhaust System — Regeneration Completed
• Indicates that the Diesel Particulate Filter (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
• Regeneration has been disabled due to a system malfunction. The Powertrain
control Module (PCM) will register a fault code and the instrument panel will
display the MIL light.
Exhaust Filter Full — Power Reduced See Dealer
• The PCM derates the engine in order 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. Have your
vehicle serviced by your local authorized dealer.
See your authorized dealer, as damage to the exhaust system could occur with the
exhaust filter full.

DIESEL EXHAUST FLUID

• Diesel Exhaust Fluid (DEF) sometimes known simply by the name of its active
component, UREA—is a key component of selective catalytic reduction (SCR)
systems, which help diesel vehicles meet stringent emission regulations. DEF is a
liquid reducing agent that reacts with engine exhaust in the presence of a catalyst
to convert smog-forming nitrogen oxides (NOx) into harmless nitrogen and water
vapor.
• Your vehicle is equipped with a Selective Catalytic Reduction system in order to
meet the very stringent diesel emissions standards required by the Environmental
Protection Agency. Selective Catalytic Reduction (SCR) is the first and only
technology in decades to be as good for the environment as it is good for business
and vehicle performance.
• The purpose of the SCR system is to reduce levels of NOx (oxides of nitrogen
emitted from engines) that are harmful to our health and the environment to an
almost near-zero level. Small quantities of Diesel Exhaust Fluid (DEF) are injected
into the exhaust upstream of a catalyst where, when vaporized, convert smog-
forming nitrogen oxides (NOx) into harmless nitrogen (N2) and water vapor (H2O),
two natural components of the air we breathe. You can operate with the comfort
that your vehicle is contributing to a cleaner, healthier world environment for this
and generations to come.
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CAUTION!