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Step one is to remove the fuse panel and the GEM module attached to the back of the fuse panel which is in front of your left knee. Now disassemble them to see if there is signs of moisture like arc marks or rust on the circuits board. Now with them removed look at the metal components in the dash in this area to see if there are signs of ANY rust. If any sign of water presence now or i n the past is seen then both parts and the windshield need to be replaced.
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