Do it yourself
Frequently asked questions about cars and motorcycles
Car tutorial (Do it yourself) Motorcycle tutorial (Do it yourself) Frequently Asked Questions

How to Replace the Key Battery of the Audi A3

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

See other generations:
Video tutorial

If you own an Audi A3 8v (2012-2019) and the key has suddenly stopped working, do not rush to buy a new one as the solution may be much more economical and simple. Below, you will discover how to replace the small battery inside the key. First, get a flat screwdriver and use it to remove the rear cover of the key. Then, replace the old battery with a new one (CR2032) and refit the cover to complete the procedure.


Updated on 10 October 2026 by ScegliAuto


Related tutorials

How to Replace the Key Battery in Your Audi A3
How to Replace the Key Battery in Your Audi A3
Audi A3 (2003-2013 / 8P, MK 2) Start by pressing the silver button on the top of your Audi A3 key to extract the physical key from the electronic key. Using a small flathead screwd…
How to replace the battery of the Audi A3 key
Audi A3 (2012-2019 / 8V, MK 3) When the malfunction message of the key appears on the instrument panel, the cause is almost always a depleted battery. In this case, simply replacin…
How to replace the battery of the Audi A3 8V key
How to replace the battery of the Audi A3 8V key
Audi A3 (2012-2019 / 8V, MK 3) To replace the battery in the key of your Audi A3 8v, you only need a flathead screwdriver and, of course, a new perfectly compatible battery, specif…

    Frequently Asked Questions

    • A3 2012-2019 - The key battery light on Audi A3 comes on: what does it mean? Read answer

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

More videos