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How to replace the key battery of an Audi A3

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

See other generations:
Video tutorial

To replace the key battery of an Audi A3, insert a flathead screwdriver into the side where the ignition key is usually located to open the remote cover. Next, remove the old battery and insert a new one, model CW2032. Close the remote key cover and approach the vehicle to lock and unlock the car to verify the key's functionality.

If the remote does not work despite the new battery, it may be necessary to disassemble the remote completely and clean the microchip and buttons, as shown in the video.


Updated on 8 September 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!

Watch the video!


by ScegliAuto

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