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How to Open the Audi A4 Key and Replace the Outer Shell

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

To open the Audi A4 key and possibly change the outer protective shell, first extract the internal key by pressing the button on the chrome side of the key. Once the key is extracted, use the same button to remove the battery housing along with the battery itself. Inside the remote, you will find the circuit board with the immobilizer and the buttons for locking, unlocking the car, and opening the trunk. Using a small pair of pliers, grasp the tab where the battery is housed, gently pull it out, and the circuit board with the immobilizer will come out. Now, take the new protective shell, insert the circuit board until you hear a click, reinsert the battery housing with the battery and the key. At this point, verify the proper functioning of the remote.

Updated on 2 June 2026 by ScegliAuto

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by ScegliAuto

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