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

Replace the Key Fob Battery of an Audi A3

Model: Audi A3 8P, MK 2 - Years 2003-2013
Part: Key

Replace the key fob battery of your Audi A3 by following simple steps. Take your key fob and press the metal key release button. Once the metal key is out, use a screwdriver to pry between the two covers of the key (in the space where the metal key fits). Pry until the cover opens, then, remove the worn battery with a small screwdriver, take a new one of the same size and voltage. Refit the cover on your key fob by pressing on the key case until you hear it click into place. Check the proper functioning of the key fob by pressing the buttons.

Updated on 27 February 2026 by ScegliAuto

Video tutorial

Related tutorials

How do you replace the battery of the Audi A3 key?
How do you replace the battery of the Audi A3 key?
Audi A3 (2012-2019 / MK 3, 8V) The inability to open the central locking of one's car is most often due to a flat remote control battery, except for some exceptions, such as cold s…
How to replace the battery of the Audi A3 remote control
How to replace the battery of the Audi A3 remote control
Audi A3 (2003-2013 / 8P, MK 2) Today we will explain how to replace the battery of the RS model remote control for the Audi A3. The battery we will use is a CR 2032. Pull up the to…
How to replace the battery of the 2017 Audi S3 remote control
Audi A3 (2012-2019 / MK 3, 8V) To replace the battery of a 2017 Audi S3 remote control, we need to use a CR2032 model battery and a flathead screwdriver. Lift the key from the remo…

Other guides you may be interested in

How to Remove the Driver's Side Airbag (Steering Wheel) on a BMW 3 Series

How to remove the driver's side airbag (steering wheel) on a BMW 3 Series? This operation is very simple if you follow the steps. Let's see in this guide how to proceed: insert a medium-length screwdriver into the rear slots on the steering wheel and turn until you release the clips that hold the airbag. Once the airbag is disconnected, disconnect the power connectors and remove it from the steering wheel. For reinstalling the airbag: connect the power connector, then press it onto the steering wheel until the locking clips snap into place inside the steering wheel.

Watch the video!


by ScegliAuto

More videos