Q: My 2020 Toyota Sienna has a significant amount of corrosion on the positive battery post and absolutely nothing on the negative post. What causes this and is it problematic? Can it be stopped?

Battery corrosion occurs naturally and usually doesn't signify a vehicle problem. If you let it build up, though, it can stop your car in its tracks.

Toyota Sienna has a significant amount of corrosion on the positive battery post and absolutely nothing on the negative post. What causes this and is it problematic? Can it be stopped? P.J., New Lenox ...

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