Control Unit, Def Heater: Description
 Courtesy of CHRYSLER GROUP, LLC
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| 1 - Diesel Exhaust Fluid Heater Control Unit Nut |
| 2 - Diesel Exhaust Fluid Heater Control Unit |
| 3 - Diesel Exhaust Fluid Heater Control Unit Wire Harness Connector |
The Diesel Exhaust Fluid (DEF) Heater Control Unit (HCU) is located on the right rear wheel house.