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How to Change the Battery in an Audi A4 Key Fob

Model: Audi A4 B6 - Years: 2000, 2001, 2002, 2003, 2004
Part: Key

See other generations:
Video tutorial

How do you replace the battery in an Audi A4 key fob? Let's see how to do it in this video. Take your key fob and press the button to release the metal key. Once extracted, use a lever to separate the two halves of the cover (as shown in the video).

Remove the battery from the housing (after separating the two halves of the cover), take a new one of the same size and voltage. Reinstall the battery in the key fob cover; join the two parts of the key fob and then the two covers.

Check the proper functioning of the key fob.


Updated on 14 March 2026 by ScegliAuto


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How to Reset the AdBlue Warning Light on a Peugeot Boxer

To reset the AdBlue system on a 2018 Peugeot Boxer, follow these steps: Start the engine and ensure the vehicle is parked in a well-ventilated area. Locate the "MENU" button on the dashboard or steering wheel controls. Press and hold the "MENU" button until the menu options appear on the display. Use the arrow buttons or scroll wheel to access the "Vehicle Settings" or "Settings" menu. Select the "AdBlue" or "AdBlue System" option. Look for the "Recharge" or "Reset" option in the AdBlue menu. Once you find the reset option, select it and confirm your choice when prompted. The system will be reset, and a confirmation message may appear on the display. Turn off the engine and wait a few seconds. Restart the engine and check that the AdBlue system has been reset.

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by ScegliAuto

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