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

Replacing the Key Battery of the BMW 3 Series

Model: BMW Serie 3 E46 - Years: 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
Part: Key

See other generations:
Video tutorial

Let’s see in this guide how to disassemble and replace the battery of the BMW 3 Series key, as well as the Z4. First, take your key and start prying at the small side slot using something thin to open the key into two parts; then remove the small battery from the circuit board, being careful not to damage the contacts, as shown in the video.

At this point, install the new battery of the correct type (in this case, an LIR 2025); all that’s left is to reassemble your key!


Updated on 19 June 2026 by ScegliAuto


Related tutorials

Replacing the Key Battery on a BMW 3 Series
Replacing the Key Battery on a BMW 3 Series
BMW Serie 3 (2012-2019 / F31, F30) Replacing the key battery on a BMW 3 Series. Let's see how to do the replacement. Take your remote and slide the button to release the metal key. Onc…
Replace the Key Fob Battery for BMW 3 Series E90 - 5 Series E60
Replace the Key Fob Battery for BMW 3 Series E90 - 5 Series E60
BMW Serie 3 (2005-2013 / E92, E90, E91) Follow these instructions to disassemble and replace the battery in the key fob for the BMW 3 Series E90 and 5 Series E60. First, take your key fob a…
How to Replace the Key Battery of a BMW 3 Series
How to Replace the Key Battery of a BMW 3 Series
BMW Serie 3 (2005-2013 / E92, E90, E91) Before you begin, remove and extract the emergency key from the electric key of your BMW 3 Series by pressing the release button. Start by prying off…

How to Remove the Toll Tag Holder from the Car Windscreen

The toll tag holder is usually attached to the car windscreen to ensure that the toll tag functions immediately when passing through barriers. However, if you decide to remove the holder, you should follow this procedure: - Insert the toll tag into the holder; - Pull the holder inwards to detach it from the windscreen; you can use a glass scraper or a stiff plastic card to assist you; After removing the holder, it is essential to remove the adhesive from the windscreen. To remove the adhesive, we recommend using a solvent-based spray that will remove the glue without clouding the area.

Watch the video!


by ScegliAuto

More videos