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How to Change the Battery of an Audi A3 Key

Model: Audi A3 8V, MK 3 - Years: 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019
Part: Key

See other generations:
Video tutorial

Replace the key fob battery of an Audi A3. Follow these steps: take the key fob used to unlock the doors. Use a lever to separate the cover from the plastic cap as shown in the video.

Once the cover is removed, extract the worn battery from the key fob housing, take a new one of the same size and voltage. Insert the battery, reattach the plastic cap to the key fob cover.

Finally, test the correct functioning of the key fob by operating the unlock and lock buttons.


Updated on 1 March 2026 by ScegliAuto


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How to Activate the Automatic Folding and Unfolding of the Wing Mirrors on the Jeep Compass

Follow these brief instructions to activate the automatic folding and unfolding of the external wing mirrors on the Jeep Compass. First, get inside the vehicle and turn on the ignition; then press the button located beneath the mirror glass adjustment to electrically open the mirror, as shown in the video. Pressing the button in the opposite direction will close the mirrors; by holding the button, the mirrors will open and close automatically!

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by ScegliAuto

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