Hi,
If it is indicating bad, then chances are there is a bad cell in the battery and it does need to be replaced.
Replacing the battery isn't too hard of a job. To get you started, here is a link that explains how in general to replace one. Use this as a guide.
https://www.2carpros.com/articles/how-to-replace-a-car-battery
If you look at the attachments below, they include the directions specific to your vehicle for replacement. When you perform this, when disconnecting the battery, start with the negative terminal removal and then the positive. When installing the new battery, start with the positive and then install the negative.
I hope this helps. Let me know if you have other questions.
Take care,
Joe
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Wednesday, July 28th, 2021 AT 1:45 PM
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