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System overview, Diesel exhaust fluid storage, Diesel – Ram Trucks 2013 3500 - User Guide User Manual

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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 components:

• DEF tank
• DEF pump
• DEF injector
• Electronically-heated DEF lines
• DEF control module
• NOx sensors
• NH3 sensor
• Temperature sensors
• SCR catalyst

• The DEF injection system and SCR catalyst enable the achievement of diesel

emissions requirements; while maintaining outstanding fuel economy, drivability,
torque and power ratings.

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.

Diesel Exhaust Fluid Storage
• Diesel Exhaust Fluid (DEF) is considered a very stable product with a long shelf

life. If DEF is kept in temperatures between 10° to 90°F (-12° to 32°C), it will last
a minimum of one year.

• DEF is subject to freezing at the lowest temperatures. For example, DEF may

freeze at temperatures at or below 12° F (-11° C). The system has been designed
to operate in this environment.

NOTE:
When working with DEF, it is important to know that:
• Any containers or parts that come into contact with DEF must be DEF compatible

(plastic or stainless steel). Copper, brass, aluminum, iron or non-stainless steel
should be avoided as they are subject to corrosion by DEF.

• If DEF is spilled, it should be wiped up completely.

DIESEL

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