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Heated windshield in Polo 6R – electrical installation
There are 2 types of heated windscreen – depending on the rearview mirror attachment.
6RU 845 011F NVB–
6RU 845 011J NVB–
PR-4GX– Windshield in heat-insulating glass, heated
PR-4L2– Dipping breakaway interior rear view mirror
PR-4L6– Breakaway interior rear view mirror, automatically dimming
Each Polo Sedan with heated windscreen has 140A alternator. If windscreen without heating there is 110A alternator. I suppose it is because of huge power consumption of the windscreen. And if switch on the all devices (front+rear heating, headlights, fog lights, seat heaters etc. 110A alternator couldn’t get managed with power consumption on engine idle rpm.
source: ciclo’s thread