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Q: I'm looking for general guidance for replacing my old battery with new one. on 2008 Mercedes-Benz E320 BLUETEC

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Which terminal, positive or negative, do I connect first? In this model what, if anything, do I also need to do for getting electronics back in sync (e.g. digital clock,power windows,sunroof, auto seat location)?
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Connect negative terminal first. Resetting your personal settings on the electronics should be available in the owners manual.
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