12V battery change reset? - GreenHybrid - Hybrid Cars

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Old 07-10-2017, 12:20 PM
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Join Date: Jun 2017
Posts: 10
Default 12V battery change reset?

Do I need to do anything when replacing the 12V battery other than swapping old with new and reconnecting battery terminals? No ECU relearn or anything?
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Old 07-10-2017, 04:25 PM
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Join Date: Sep 2014
Location: Mesa, AZ
Posts: 2,135
Default Re: 12V battery change reset?

disconnecting the 12V resets all computers.

I'm not sure if it's necessary, but some models require an idle re-learn procedure:


It may not be required for the HCH.

I've never done it on any of my Hondas.
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