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Frequently asked questions about cars and motorcycles

How to Replace the Key Fob Battery in an Audi A4?

Model: Audi A4 B7 - Years 2004-2008
Part: Key

To replace the key fob battery in an Audi A4, use a tool to pry open the back cover of the device. Underneath, you will find the battery, which can be removed from its housing and replaced with a new replacement part. Once the new battery is inserted into the device, close it by repositioning the back panel. After the replacement, check that the device functions correctly.

Updated on 18 September 2026 by ScegliAuto

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