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How to Use the Audi A4 B8 Key When the Battery is Dead

Model: Audi A4 B8 - Years 2007-2016
Part: Key

When your Audi A4 no longer responds to your key commands, it is likely because the battery is dead. However, not everyone keeps a spare battery on hand, and not everyone can replace it (it's very simple, as shown in many other tutorials). That said, whether the issue is the battery or not, if the car does not respond to the remote, the solution is straightforward: press the button on the back of the key fob and pull out the manual spare key. Insert it into the lock slot to open it, and then use the key as usual.

Updated on 6 May 2026 by ScegliAuto

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