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My positive terminal has a fantastic amount of corrosion on it...covering the entire clamp.
I know it had some of that spray/grease stuff sprayed on the terminals before, but that doesn't seem to be working. Any ideas on how to fix and prevent this from reoccuring? I still have the factory 3-year old battery with about 53k miles on the car. Perhaps its time for a new one? Maybe it has a cracked terminal causing the corrosion?
 

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I had the same problem. It started right after I had the battery cable recall(where they rerouted the cables to keep them from rubbing)done. I cleaned the terminal several times and the last time when I put it back on, the car would not start. Had it towed in and they found that at the other end where it connects to the starter solenoid the wire had pulled out of the connector. The dealer replaced both of my battery cables under warranty
 
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