If you have issues with your BMW amplifier or radio tuner and have stumbled upon a few forums that mention BM54 (sometimes known as BM24 or BM53), you probably searched BM54 and landed on this page.
The BM54 is a key component in many BMWs like the X5 (E53), 3 Series (E46), 5 Series (E39) and a few other models. This little silver box is the main component that creates the sound in your car. You’ll notice several images of a BM54 on this page.
The BM54 unit is made by Becker and has a built-in design floor that will fail at some point in its lifespan: this is a FACT! We can repair these units within 24hrs (from the day of receipt).
Apart from the basic fix to get the sound back up and running we can actually upgrade the sound to use the latest Pioneer MOSFET amplifier stage. This will increase the volume and make for a much better sound quality. Some people like to buy a DIY kit for doing this, but due to the cost and complexity of doing this, it’s not cost effective and may even result in ruining your unit.