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I have a 2008 escalade esv and when I insert the nav disc it says disc inserted is not a nav disc. The disc has the Cadillac label and is the disc that came with the vehicle. I called customer service and they told me to take it to the dealer. Problem is my closest dealer is over 100 miles away. He then suggested I could order a new disc but before I dump 200 on a non returnable disc I was wondering if there is a way to clean the head unit or another way to get it to work. The disc looks pristine, no scratches smudges etc. I appreciate any help or advice you all can offer and if I have posted this in the wrong place I beg forgiveness, I'm new here. Thanks again
 

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I would run a wet disc cleaner in it. It is a disc with a little brush on the bottom you put a drop of alcohol on it and let it play until it tells you it is clean. I have one and I think it's RCA and they work great in cleaning the laser by getting dust and things of the laser, it sure won't hurt anything. Good luck!
 
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