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Honda Jazz Forums => Honda Jazz Mk4 2020 - => Topic started by: smithy_sid on June 11, 2026, 03:24:21 PM

Title: Replacing 12v battery on 2023 Jazz
Post by: smithy_sid on June 11, 2026, 03:24:21 PM

Hi
I need to change the 12v battery on my 2023 Jazz hybrid. Can I just swap out the old battery for the new or do I need to go through an ECU/ICE etc. recalibrating  procedure after the swap? If so, should I get a car memory saver and connect that up before disconnecting the old battery? Any advice on steps and products would be really helpful.

Title: Re: Replacing 12v battery on 2023 Jazz
Post by: John Ratsey on June 11, 2026, 03:31:10 PM

See page 570 of the manual https://www.honda.co.uk/cars/owners/manuals-and-guides/honda-owners-manuals/_jcr_content/par1/textcolumnwithimagem_1653971839/textColumn/richtextdownload_e3c/file.res/23%20JAZZ%20HEV%20SSS%20(KE%20KG)-32TZA6210_01_web_compressed.pdf.

Title: Re: Replacing 12v battery on 2023 Jazz
Post by: smithy_sid on June 11, 2026, 03:45:50 PM

Thanks. I had seen this but have also read things elsewhere about recalibrating the windows, stop/start system, etc. If the advice in the Jazz handbook is all I need to I'd be happy. But... Anyone with experience of changing the 12v battery on a Mk4 hybrid?