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

Remote Key Battery Replacement

Model: Audi A4 B6 - Years 2000-2004
Part: Key

If pressing the unlock button on the remote key does not open the door locks or if you need to get very close to the door for the remote to work, it is likely that the remote battery is dead; to replace it, first separate the remote part from the metal key holder by prying in the designated slot with a small screwdriver; at this point, open the remote shells to access the battery compartment (CR2032) and replace it with a new one, then close the shells and reassemble the remote with the key.

Updated on 19 February 2026 by ScegliAuto

Video tutorial

Related tutorials

Replacement of the Audi A4 key remote battery
Replacement of the Audi A4 key remote battery
Audi A4 (2014-2024 / B9) Today's step-by-step instructions will show us how to disassemble and replace the battery of the key remote for the Audi A4. First, we take our remot…
Audi A4, A5, A6, Q5 remote control key battery replacement
Audi A4, A5, A6, Q5 remote control key battery replacement
Audi A4 (2014-2024 / B9) In today's video we will see how to disassemble and replace the remote control key battery on different Audi models (A4, A5, A6, Q5 and others). Firs…
Audi A4 B8 key remote control battery replacement
Audi A4 B8 key remote control battery replacement
Audi A4 (2007-2016 / B8) Let's see in this guide how to remove and replace the battery of the remote control of the key of an Audi A4 B8. First we take our remote control in …

Other guides you may be interested in

How to Remove the Cabin Fan Resistor on a Mercedes A-Class W169

If the cabin fan speed does not change when adjusted or only activates at maximum speed, the fan resistor may be damaged. Replacing it is fairly easy, and the part is readily available. The resistor is located right behind the center console, but you can access it by removing the trim panel directly below the steering column and then detaching the side cover of the tunnel. At this point, you can easily reach the resistor and its power connector; just pull it out of its housing to replace it.

Watch the video!


by ScegliAuto

More videos