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

Model All (CAR) with code 597 (Heated windshield) 

Sample illustration of windshield heater control unit 

Overview 

This document contains information on:

• General 
• Function requirements 
• Function 

General 

The windshield heater control unit receives the request to operate the windshield heater and passes this onto the windshield heater.

Function requirements 

• Engine running or drive train operational.

Function 

The request to operate the windshield heater is realized, among other things, via:

• The touchscreen (via a CAN connection)
• The rain and light sensor with additional function (via a LIN connection)
• The outside temperature sensor
• The electronic ignition lock control unit (via an ETHERNET connection)
• The air conditioning control panel (via a LIN connection)

The corresponding request is then forwarded in a vehicle-dependent manner to the climate control, control unit or the front signal acquisition and actuation module control unit.

The windshield heater control unit receives these requests to operate the windshield heater in a vehicle-dependent manner from the climate control, control unit or from the front signal acquisition and actuation module control unit via a LIN connection.

The supply voltage is converted by the windshield heater control unit and the windshield heater accordingly actuated.

In addition, 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 windshield heater) via a LIN connection in a vehicle-dependent manner to the climate control, control unit or the front signal acquisition and actuation module control unit.

	Component descriptions
	Windshield heater control unit, component description	Model 223 with code 597 (Heated windshield)	GF67.10-P-2001A
		Model 206 with code 597 (Heated windshield)	GF67.10-P-2001C
		Model 297 with code 597 (Heated windshield)	GF67.10-P-2001D
		Model 295 with code 597 (Heated windshield)	GF67.10-P-2001E
		Model 296 with code 597 (Heated windshield)	GF67.10-P-2001G