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How to Replace the Key Battery on a Subaru Legacy

Model: Subaru Legacy BM, MK 5, BR - Years 2009-2014
Part: Key

If you need to replace the remote key battery on this vehicle, you will find simple instructions in the description below and in the video tutorial. First, obtain a small screwdriver to remove the screw at the top of the key. Then, remove the rear cover, and underneath, you will find the compartment containing the battery. Carefully pry out the old battery and replace it with the new one, ensuring the positive polarity is facing upwards. Finally, reposition the cover and reinsert the screw.

Updated on 27 May 2026 by ScegliAuto

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