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How to Replace the Key Remote Battery in an Audi A3

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

This brief guide provides instructions on how to disassemble and replace the battery of the remote key for an Audi A3. First, take the remote in hand and start to lever on the side slot of the back cover of the remote to remove it; then take out the battery found inside, as shown in the video. Next, install the new battery of the correct type and with the same designation; insert it in the correct orientation and refit the plastic cover, finally checking the operation of the buttons.

Posted on 5 June 2026 by ScegliAuto

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