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How to Replace the Remote Battery in a Buick LaCrosse?

Model: Buick Lacrosse MK 3 - Years 2017-2024
Part: Key

In this tutorial, you will see how to replace the remote battery in a Buick LaCrosse, a very simple and inexpensive operation. You won’t need any special tools, just a replacement CR2032 3V battery. First, press and hold the button on the back of the remote, then remove the emergency key and use it to open the back cover by prying in the indicated slot. Once fully opened, you can remove the old battery and insert the replacement, making sure to observe the polarity.

Updated on 31 July 2026 by ScegliAuto

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