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Home >> Mercedes Benz >> 2004 >> E500 Base >> Repair and Diagnosis >> Engine Mechanical >> Blowers, Superchargers & Turbochargers >> Air Intake, Turbocharging - 211 Chassis >> Basic Knowledge >> Component description for the vent line heater element - GF09.00-P-4010IC

Component description for the vent line heater element - GF09.00-P-4010IC

ENGINE 647.961 

ENGINE 648.960 

ENGINE 648.961 

Location shown on engine 647 

The heating element is located between the intake pipe and the engine ventilation hose, on the left below on the intake pipe.

Task 

The vent line heater element prevents freezing of the crankcase ventilation system by condenwate and plugging up of the crankcase ventilation system by non-volatile oil residues.

Fig 1: Identifying Vent Line Heater - Shown On Engine 647
G04982852

Design 

The heating element consists of a plastic housing with an integral heating resistor and a 2-pin plug connector.

Function 

The heating element is switched on and off by the CDI control unit (N3/9) depending on the outside temperature.