Jeep grand cherokee 2018, Manual

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Diesel Exhaust Fluid
Your vehicle is equipped with a Selective Catalytic Reduc-
tion system to meet the very stringent diesel emissions
standards required by the Environmental Protection
Agency.
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 a near-zero level.
Small quantities of Diesel Exhaust Fluid (DEF) is injected
into the exhaust upstream of a catalyst where, when
vaporized, it converts 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.
System Overview
This vehicle is equipped with a Diesel Exhaust Fluid (DEF)
injection system and a Selective Catalytic Reduction (SCR)
catalyst to meet the emission requirements.
The DEF injection system consists of the following compo-
nents:
•
DEF tank
•
DEF pump
•
DEF injector
•
Electronically-heated DEF lines
•
NOx sensors
•
Temperature sensors
•
SCR catalyst
The DEF injection system and SCR catalyst enable the
achievement of diesel emissions requirements; while main-
taining outstanding fuel economy, drivability, torque and
power ratings.
Refer to “Instrument Cluster Display” in “Getting To Know
Your Instrument Panel” for system messages and warnings.
34 STARTING AND OPERATING