Heated Front Windscreens

how recently did the patent expire? I have it on my 55 plate VW Passat so surely it couldn't have expired that recently?

As has been mentioned, it's been a very nice feature during the winter and with the freezing temperatures. Also helps to de-mist the windscreen very quickly!
 
What, of their own accord, or when you press the windscreen demist button on the climate control?

If mine comes on when the temp is below 4c, the button certainly doesn't light up :p

In my Focus both front and rear window heaters come on if temp is at 4 deg or less, oh and the lights work on the buttons :)

Oh should state that this only happens upon starting the car and not whenever driving along and the temp drops.
 
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