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 an Audi A3

Model: Audi A3 8V, MK 3 - Years 2012-2019
Part: Key

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

Video tutorial

Related tutorials

How to Replace the Key Fob Battery in an Audi A3
How to Replace the Key Fob Battery in an Audi A3
Audi A3 (2020-2026 / 8Y, MK 4) The procedure for replacing the battery in the key fob of an Audi A3 requires a few simple steps. First, extract the metal key from inside the fob: t…
How to Replace the Key Battery on the Audi A3
How to Replace the Key Battery on the Audi A3
Audi A3 (2020-2026 / 8Y, MK 4) To independently replace the small battery inside your latest generation Audi A3 key, read the following guide and apply the described procedure corr…
How to Replace the Battery in the Audi A3?
How to Replace the Battery in the Audi A3?
Audi A3 (2012-2019 / 8V, MK 3) Replacing the battery in the Audi A3 is very straightforward. For this operation, in addition to a suitable replacement battery, you will need a 10mm…

Other guides you may be interested in

How to Replace the Remote Battery for the Volvo XC40?

In this tutorial, you will see how to replace the battery in the remote for the Volvo XC40, a very simple and quick operation. For this, you will need a replacement battery of type CR2032 and possibly a small flathead screwdriver. First, remove the front cover by pressing the button on the metal ring, then locate the second button, press it as well, and remove the opposite cover. Next, open the circular cap, take out the old battery, and insert the new one in the opposite direction. Finally, reassemble everything.

Watch the video!


by ScegliAuto

More videos