Quote:
Originally Posted by tonupkid
The Ford system has visible wires inside the glass, which can be a tad distracting in night-time headlamp glare. It was used in aircraft during WW2 so perhaps any patents have expired. I actually have this on a VW.
The Audi system energises a tin dioxide layer that is deposited on one of the inner surfaces of the laminated glass. When a current is applied across the glass resistance in the metallic layer causes it to heat up, and in turn warms the glass.
IMO it's the best system out there. Very fast and invisible.
BTW your engine needs to be on for the heated front screen to operate.
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Found your explanation very interesting, the whole system just screams German
Engine is on but nothing, next day off that control units is coming out for inspection
