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How to Replace the Key Fob Battery on a Chevrolet Sonic

Model: Chevrolet Sonic T300 - Years 2012-2020
Part: Key

If you notice that the key fob for your vehicle is not working, you likely need to replace the internal battery. Follow these steps to do so, and you can also refer to the video. First, purchase a CR 2032 battery. Next, extract the emergency key and use a screwdriver to pry open the back cover. This will give you access to the compartment that holds the battery, which you can remove and replace with the new one, making sure to position the positive terminal facing up. Finally, snap the cover back on.

Updated on 24 July 2026 by ScegliAuto

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