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How to Change the Key Fob Battery for Our Audi A4

Model: Audi A4 B7 - Years: 2004, 2005, 2006, 2007, 2008
Part: Key

See other generations:
Video tutorial

How to change the key fob battery for our Audi A4? Let's see in this video how to do it in detail. Take your key fob and press the metal key extraction button.

Once the metal key is out, insert a small screwdriver into both ends of the cover. Pry apart the two halves of the cover, then open one half of the cover and use a small screwdriver to remove the worn battery.

Take a new battery of the same type and replace it. Reassemble the cover on your key fob by pressing on the key case until you hear it click into place. Check that the key functions correctly.


Updated on 27 February 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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