Take out and you'll need to find the unit that is BM54 therefore it could be taken or sent to a repair site.
The actual BMW BM54 repair is generally so straightforward the unit may be returned to you personally on the exact same day it is received, or done in a couple of hours (should you take it in to your repair centre yourself) to be picked up on the day you drop it in.
You'll find a BM54 unit in some Land; the BMW 3 series; and the BMW X5 and Range Rover models. Your owner's manual should inform you what version of BM54 unit you've got in your own car.
The BMW BM54 repair begins with fault analysis - so you need to tell your engineer what's wrong with the unit. Common faults in the BM54 contain decrease of audio to one or even more channels; total loss of sound; or Range Rover BECM only some of the loudspeakers working. Know that only the loudspeakers in a single area of your vehicle are faulty, or if one of your loudspeakers is not faultless, it could not be the BM54 unit at fault but wiring in the doors.
You can receive your BM54 unit checked for faults in situ before you send it off for the BMW BM54 repair. It's best to do this because you will not know for sure that it's the unit itself causing the issue. And undoubtedly if you send away that unit with no problem,, it will come back not wanting fixing and you will still have that problem - plus you may have had to pay the BMW BM54 repair centre for the time.
You can try to ask the centre to which you are sending it to do a full BMW diagnostic test on it before they begin to fix it in case you are unsure where to get a BM54 assessed before repair. Meaning you will pay no more than you would if you had it assessed everywhere else - and if the BMW BM54 repair isn't wanted, you will not have put yourself out of pocket in any manner.
Every BM54 unit is located in a somewhat different place - usually in the boot well, below the spare tyre. For directions on removing the BM54 unit prior to the BMW BM54 repair, refer to sites or take a look in your manufacturer's manual. If you have some questions contact the company that is going to do your diagnosis and repair and get their advice.
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