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How to Replace the Key Fob Battery for the Audi A3

Model: Audi A3 8V, MK 3 - Years 2012-2019
Part: Key

Today, let's go through these brief instructions on how to disassemble and replace the battery of the Audi A3 key fob. First, take your key fob and use a thin, pointed object like a flat screwdriver to pry open the side of the fob, removing the plastic cover; this will give you access to the battery compartment, as shown in the video. Now, remove the old battery and replace it with a new one of the correct type (in this case, a CR 2032 3V); insert it the right way round and refit the plastic cover!

Updated on 15 August 2026 by ScegliAuto

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by ScegliAuto

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