Dodge RAM 1500 2018, Diesel Supplement

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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
•
DEF control module
•
NOx sensors
•
Temperature sensors
•
SCR catalyst
•
UQS Sensor
Refer to “Instrument Cluster Display” in “Getting To Know
Your Instrument Panel” for system messages and warnings.
NOTE:
•
Your vehicle is equipped with a DEF injection system.
You may occasionally hear an audible clicking noise.
This is normal operation.
•
The DEF pump will run for a period of time after engine
shutdown to purge the DEF system. This is normal
operation.
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