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Replace the Key Battery for Audi A3

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

In this video tutorial, learn how to disassemble and replace the battery of the remote key for an Audi A3. First, take the remote in hand and pry open the sides with a sharp tool; now, open and remove the back cover of the remote to access the battery. At this point, remove it with a sharp tool and replace it with a new one of the correct type (in this case, a 2032). Finally, reassemble it, inserting it the correct way and putting the back cover on; then, check its operation!

Updated on 12 April 2026 by ScegliAuto

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by ScegliAuto

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