Replacing the Key Battery on Audi A4

Model: Audi A4 B8 - Years: 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016
Part: Key

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Let's see how to replace the dead battery found in the Audi A4 key. Take your remote and press the buttons on the metal part to release the metal key. Once extracted, remove the battery holder from inside the key. Take out the worn battery from the housing, get a new one of the same size and voltage.

Install the plastic battery holder back into the remote cover, then finally insert the metal key into the cover.

After assembling all the key pieces, test the button functionality.

Updated on 13 April 2026 by ScegliAuto

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by ScegliAuto

Replacing the Key Battery on Audi A4

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