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Windshield Heater Control Unit, Basic Function - GF67.19-P-9890A

Model all (CAR) with code 597 (Heated windscreen) 

Fig 1: Windshield Heater Control Unit Components Location - Model 205 with code 597
G12824257Courtesy of MERCEDES-BENZ USA

Location 

The windshield heater control unit is located on the right in the engine compartment.

Task 

The windshield heater control unit receives operation requests for the windshield heater from the climate control unit, transforms the supply voltage, and actuates the windshield heater accordingly.

The windshield heater control unit monitors the function of the windshield heater and transmits corresponding basic data (e.g. power consumption, temperature, or short circuit of the windshield heater) to the climate control unit.