The DEF Dosing Control Unit is the central control for the aftertreatment diesel exhaust fluid dosing system, and handles the tank level sensing, tank temperature sensing, line heating, and tank heating.
#2011 dodge service def system driver
If the driver experiences a change in engine performance, then service may be required sooner than later. The Diesel Exhaust Fluid (DEF) Dosing Control Unit is used to control the operation and monitoring of the Diesel Exhaust Fluid system. The SCR heating system is designed to quickly return the DEF to liquid form and the operation of the vehicle will not be impacted.
If DEF freezes when the vehicle is shut down, start up and normal operation of the vehicle will not be inhibited. Operating the truck may be safe, but the driver needs to pay attention to the coolant temperature, and oil pressure if this is associated with other related systems. During vehicle operation, SCR systems are designed to provide heating for the DEF tank and supply lines.
#2011 dodge service def system drivers
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