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How to Replace the Key Battery of the Lexus IS 350

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

In this mini guide dedicated to your Lexus IS second series (2005-2013), follow these steps to replace the battery inside the smart key. First, locate and press the small button on the top of the cover. At the same time, pull the physical emergency key out completely. Now, use the emergency key to open the cover. Remove the old battery and replace it with a new one (model CR1632).

Updated on 4 July 2026 by ScegliAuto

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