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Discussion Starter #1
After a search for info on starter, batteries, etc. nothing came to any conclusions so I'll see if newer information is out there.

My 2012 Si with 28k miles has always had an intermittent issue where once every several weeks or months, the starter won't engage on the first try. When I try it, you hear the starter turn, but the pinion is not engaged at all. A second try works fine, the pinion engages and starter turns over the engine. This has recently happened more frequently with the cold and possibly the age of the original battery at close to 3 years. The battery still turns over the car fine when starting, no slow cranks so I'm not sure it's the battery. Taking it to the dealer is useless unless it will repeat itself and it's not had any regularity to it, but now as it's being more frequent, I'm paying more attention to when it's doing it and seeing if I can predict it. Several of the threads mention the same thing but no definitive fixes. Anyone have any new info on this?
 

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I would measure the voltage across the battery terminals when the problem occurs.
The voltage should not drop below 10.2v while the starter is turning.

Does the voltage stay above 10.2v?
Yes: time for a trip to the dealer for further testing.
No: check/service the battery cables, then have the battery tested.
 

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Update: Replaced the battery and the car starts much better now and so far, no issues. Now this sounds obvious with a new battery but my car has always from day 1 sounded like the starter wasn't fully catching onto the flywheel when starting from time to time along with the occasional time it wouldn't engage at all on the first attempt. This new battery has more cranking amps than the oem one and sounds like it's fully engaging consistently. It's hard to describe what it was doing but the starter noise before had always been strange to me. Now it sounds more consistent and sounds like a "Honda" starter. Yes that sounds stupid, but it sounds like all of the other Hondas I've owned.
 
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