Introduction
This is how to change a key battery for a 2010 Toyota Corolla. The guide itself is straightforward and requires very minimal tools with little time to complete.
Tools
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Remove the top cover of the key fob.
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Remove the circuit board from the inside of the key fob.
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Flip over the circuit board to find the battery.
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Place the battery and circuit board into the key fob.
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Clip the key fob cover back onto the rest of the fob.
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