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How to Replace the Audi Key Battery

Model: Audi Audi Various
Part: Key

The Audi key battery is a 3-volt button cell available for about £1 at any DIY shop. To replace it, first remove the mechanical blade from the key. Press the designated button on the back of the remote while simultaneously pulling the key outwards. Now, open the battery compartment cover using a flat screwdriver. Use the same screwdriver to extract the old battery, then insert the new one, and finally, reattach both the cover and the mechanical key.

Updated on 22 June 2026 by ScegliAuto

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