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How do you replace the power key battery in the Audi A3 2003?

Model: Audi A3 MK 2, 8P - Years: 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
Part: Key

See other generations:
Video tutorial

We would like to point out that the battery replacement process for the key in this video is common to many cars, so it is not only valid for the Audi A3 2003. After noticing that the key no longer opens and closes the car, etc., we proceed with the aforementioned work: We remove the emergency opening key from the shell and use it to pry open the central joint of the same shell, splitting it in half.

Then we remove the battery, CR2032 format, from its slot and insert a new one with the same technical characteristics.

Finally, we close the shell and put the emergency key back in place.


Posted on 7 October 2025 by ScegliAuto


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Where is the Battery Located on the Toyota Hybrid Yaris?

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Watch the video!


by ScegliAuto

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