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How to Replace the Key Battery on the Audi A3

Model: Audi A3 8Y, MK 4 - Years 2020-2026
Part: Key

To independently replace the small battery inside your latest generation Audi A3 key, read the following guide and apply the described procedure correctly. First, obtain a flat-head screwdriver and a new CR2032 battery, then use the screwdriver to remove the rear cover of the key. Next, locate and remove the exhausted battery. Finally, replace it with the new battery and correctly reassemble the rear cover you previously removed.

Posted on 4 September 2026 by ScegliAuto

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