What is a BM54?


A BM54 is an amplifier (also known as amp). An amplifier creates sound in your vehicle.


BM54's are found in BMWs and Land Rovers. 


BM54s are made by a company called Becker (Harman Kardon)


Unfortunately, they are guaranteed to fail at some point in their life time. 


At BM54, we specialise in repairing the faults in these units and they'll never fail again. 


Repair Serices Available: 

1. Repair Via Post Repair Service 

2. Repair Instore While You Wait Service



We offer two repair options for your faulty BM54 unit. 


1. Repair Via Post (24hr Service)

Simply fill in your details and select your repair options via this booking form, print out your repair form (so we know who you are) and send your unit to us. Please package it with care!

We'll return the repaired unit to you within 24 hours of receipt with a Next Day delivery service.


2. Repair While You Wait 

This is perfect if you're close to Surrey (just outside the M25). Simply fill in this booking form so we can allocate a slot for you, and pop in and we'll repair your unit while you wait.


How to repair a BM54

We do accept walk ins but it's best to call ahead so we can give you the fastest service possible. 

If you want to learn more about BM54, click here.


How do you repair a BM54?


Our official BM54 repair service is unrivalled. You will not find a better service anywhere else and we urge you not to tamper with the unit yourself as it may cause irreversible (and expensive!) damage. 


Our qualified engineers can repair your BM54 and return it to you within 24 hours of receipt. Or, if you're located near us in Surrey (just outside the M25) you can pop in to our store for a while-you-wait service. For the fastest service, it's worth getting in touch with us before hand so we can book you in before hand. 


Click here to send your BM54 unit into us direct for repair


Click here to book a slot for a BM54 while you wait repair 


If you want to learn more about BM54 repair, click here.



This is what a BM54 looks like from the top. Removal instructions can be found here

Need more help? Call us on 01932 800800.


HI Steve , yes it sounds like the BM54 module is faulty but we can repair this for you. The E39 BMW has common issues with sound failure , some speakers and or all speakers failing. If you fill the form out and send it to us we will get this repaired and sent back same day for you.

Thanks from Cartronics GB @



Whether your BMW X5 front speakers, back speakers, or just the left speakers or right speakers are not working, the fault could be the BM54 & or BM24 amp module. We can diagnose and repair the problem quickly. 

Bring in or send us the module. Or call/email us for more details.


The most common problem with your cars speakers making strange noises including whistling, screamin , popping is a fault in your BM54 radio/amp module made by Becker.

Some part numbers for these include:
65.12-6 933 455 65.12-6 976 964 (65126976964), 65.12-6 964 400 (65126964400), 65.12-6 964 401 (65126964401)

Click here to send your BM54 unit into us direct for repair

Click here to book a slot for a BM54 while you wait repair 


Repair costs start at £89.50. You can choose to send the unit in to us via post for a 24hr repair service.

We offer our customers a full diagnostic check (please call to verify pricing) if it isn't immediately evident what the problem is, the diagnostic check includes removal of the BM54 or BM24 and the re-installation.


There are many instruction videos and information available on the internet on how to remove and repair a BM54 or other BMW audio unit yourself, but we recommend a professional diagnostic check and repair by us. 

We've seen many expensive units become irreversibly damaged by tampering. 

Click here to send your BM54 unit into us direct for repair

Click here to book a slot for a BM54 while you wait repair 


BMW audio modules develop faults that cause audio loss, crackling, whistling and sometimes screaming in the front speakers, back speakers, rear speakers, left speakers or right speakers. Basically, if you have an audio fault we can diagnose the problem.


Your BMW has lost all sound from the car speakers, this may have been sudden or a gradual loss of different speakers over a period of time. If this is the case we can repair your BMW radio module (BM54 or BM24). Same day service or whilst you wait.


The radio module or amplifier (these are the same item) will probally be faulty, we can remove the unit from your car and then repair the BM54 the same day.

These units are made by Becker & have BMW part numbers. Which include  65.12-6 922 510 & 65.12-6 922 515, 65.12-6 922 510 (65126922510), 65.12-6 922 511, 65.12-6 933 091,65.10-6 933 092, 65.12-6 934 650, 65.12-6 941 691, 65.12-6 943 452, 65.12-6 972 667, 65.12-6 907 131, 65.12-6 919 079, 65.12-8 379 787, 65.12-8 385 898, 65.12-6 906 738, 65126922511, 65126933091, 65106933092, 65126934650, 65126941691,65126943452, 65126972667, 65126907131, 65126919079, 65128379787, 65128385898, 65126906738.


To confirm this issue we would like to see the car to diagnose but if you are a distance from us send the BM54 made by Becker into us for a 24hr repair service.


We can repair any unit and send these back to any country* with a fast turnaround. 

Click here to send your BM54 unit into us direct for repair

*shipping charges will apply



This is most likely the radio monitor (amp) made by Becker. See link here how to remove and send the unit (BM54/BM24) into us for a speedy repair.


Most speaker issues in the BMW cars are caused by a faulty BM54 or BM24 but we can repair these for you and turn them around in 24hrs.


We can repair your BM54 or BM24 BMW amplifier whilst you wait or next day if your sending it in to us.


Yes no problem, Cartronics GB can repair your BMW amplifier (sometimes called a radio module) which has markings for Becker BMW BM54 or BM24.


The problem could well be the amplifier but this would need to be established in the car via diagnostics. If you bring the amplifier into us we can repair for you. We will check and advise before we go ahead.


We currently have step by step instructions on removal of the BM54 modules for the BMW X5, BMW E46 (3 series) Cabriolet and  BMW E46 (3 series) Touring. Call us and we can give you instructions for other car makes.


Every repair is fully tested and guaranteed, for detailed information call us on 01932 800800


We repair the BM54 correctly, after any repair you will still have full audio for radio, bluetooth, CD changer & television.


We can diagnose and repair faults in the audio systems of many BMW models including bmw x5, bmw 5 series, bmw 3 series, bmw e53 series, bmw e46. If your BMW radio is broken and your car is not on the list give us a call and we might still be able to help.


If you have a BM54 related question that is not covered here in our FAQ's click here to submit a question for us to answer

BM 54 repairs on google maps

Cartronics GB
22 High Road Byfleet SURREY KT14 7QG
tel: 01932 800800