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How to Replace the Key Fob Battery on a Lexus RX450

Model: Lexus RX MK 3, Al10 - Years 2008-2015
Part: Key

In this short guide, you will learn how to disassemble and replace the battery of the key fob for a Lexus RX 450, as well as other models from the manufacturer. Start by opening the fob into two parts to separate it into two shells; then use a sharp object to pry open the fob in the central part, as shown in the video. At this point, access the battery: remove it and replace it with a new one of the correct type (in this case, a 2032). Ensure it is inserted the right way round and close the two shells of the fob!

Updated on 15 April 2026 by ScegliAuto

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