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How to Replace the Key Battery of the Toyota Prius

Model: Toyota Prius MK 1 - Years 2004-2009
Part: Key

If you own a first-generation Toyota Prius (2004-2009) and want to know how to replace the button battery in the key, follow these steps. First, completely remove the physical emergency key. Then, use it to easily detach the rear cover of the key and locate the exhausted battery. Once this simple operation is complete, remove the old battery and replace it with a new one.

Updated on 31 August 2026 by ScegliAuto

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