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How to Change the Key Battery of an Audi A4?

Model: Audi A4 B9 - Years: 2014, 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022, 2023, 2024
Part: Key

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Video tutorial

To change the key battery of an Audi A4, follow these simple steps. First, locate the slot or opening point on the side of the Audi A4 key. Use a flathead screwdriver or a similar object to gently pry open the key. Once opened, you will find the battery inside.

Carefully remove the old battery using a small screwdriver or a similar object to pop it out of its housing. Make sure to note the orientation of the battery so you can insert the new battery correctly.

Insert the new battery in the same orientation as the previous one, ensuring it is securely seated in its housing. Close the key carefully, making sure all parts snap back together properly.

Once closed, press the buttons on the key to check that they function correctly. If the key responds properly, you have successfully changed the battery.


Updated on 25 September 2026 by ScegliAuto


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by ScegliAuto

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