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How to Replace the Key Battery on a Lexus RX Mk2

Model: Lexus RX Xu30, MK 2 - Years 2003-2008
Part: Key

To correctly replace the battery inside your Lexus RX Mk2 key (2003-2008), follow these steps. First, locate the small button on the key cover and press it to easily remove the physical emergency key inside. Next, completely remove the rear cover and proceed to replace the old battery with a new one. Finally, reattach the cover you removed earlier and insert the emergency key back inside.

Updated on 8 August 2026 by ScegliAuto

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