Quote:
Originally Posted by Diesel911
On my 123 the Grid is external to the Rear Window Glass and on the interior of the Glass. While I can get current to the main copper areas what I found is that my entire grid has sort of a corroded cancer.
If you look in the pics you see the gird line with Copper Colored and Brown spots on it. The Brown spots represent a break in the circuit where it the grid has oxidized.
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Have you tried to work at removing the oxidation - perhaps with a metal polish? - I imagine you would want to be careful about the application.
This is what mine looks like in the 240D, too. I have current all the way across the glass, but it must be low by the time it gets to the passenger side to effectively defrost.