Q: Total electrical failure, no idea how

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Sometimes I go to start up my 2010 Volkswagen Jetta and absolutely nothing turns on. The battery is dead for no reason. I can jump it the first few times this happens, but then I have to replace it. This happens quite often and is not a fun problem to have, especially in the winter. Any idea what could be causing this in a fairly new car with 78,000 miles on it?

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