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How to Replace the Key Battery of the Lexus IS

Model: Lexus IS MK 2 - Years 2005-2013
Part: Key

If the key for your Lexus IS Mk2 (2005-2013) has suddenly stopped working and you want to learn how to replace the battery inside, follow these steps. First, remove the physical emergency key, then use it to easily detach the rear cover. Once this simple operation is complete, remove the exhausted battery and replace it with a new one of the same model. Finally, reattach the remote cover and you are done.

Updated on 25 August 2026 by ScegliAuto

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