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rear window defogger

532 Views 2 Replies 3 Participants Last post by  ewill3rd
On a 03 deville are all lines on the rear window part of the defogger? My top four lines don't defog are they possibly an fm antenna?

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Most of the gridlines are connected, but the ones closest to the top are part of the antenna system. They are not connected to the circuits for heating the glass.

It's possible that some of your gridlines are broken, but if it's just at the top area of the rear window it could just be the antenna grid you are looking at. There is a slight visible difference between the lines on the regular grid and the antenna grid.
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