Hi All, I am using MBUX and as media recognize any type of USB flash a part of the Mercedes AMG USB-C flash drive 32GB.
I tried everything as reformat in any type exFAT32, NTFS etc.. without success. Much older simple USB sticks in any format are recognized.
I tried even with Alcor Tools to reformat the microprocessor but again no success. The flash drive is working perfect in any PC or TV without any problem in both formats exFAT32 or NTFS but not in my MBUX7. Any idea to try? I suppose that MBUX does not support correctly USB 3.1 protocol yet.

Here is what is giving as info the USB

Description: [F:]USB Mass Storage Device(Mercedes Flash Disk)
Device Type: Mass Storage Device

Protocal Version: USB 3.10
Current Speed: High Speed
Max Current: 800mA

USB Device ID: VID = 058F PID = 6387
Serial Number: 2B119B24

Device Vendor: Mercedes
Device Name: Mass Storage
Device Revision: 0002

Manufacturer: Mercedes
Product Model: Flash Disk
Product Revision: 8.01

Controller Vendor: Alcor

Flash Info
Name: MT29F256G08EBHAF
ID: 2C,A4,08,32,A1,04 CE:1
Capacity: 31176.0

Deivce Scan information
MP Version:20.01.01.00
Device Mode:AU89103
Optimize Mode:Speed_Optimize_Mode
Check Mode:Natural Check
Flash Sorting ModeLow Level Format Mode
Scan Flash Level:Full Scan1
ECC: 15
Cycle Timeefault


Flash Status:BlockMode

Bad Block Set Mode:Auto Check

MPTime:2024/11/1
Produce Mode:Product



Volume: F:
Controller: Unknown
Possible Memory Chip(s): Not available
VID: 058F
PID: 6387
Manufacturer: Generic
Product: Mass Storage
Query Vendor ID: Generic
Query Product ID: Flash Disk
Query Product Revision: 8.01
Physical Disk Capacity: 31457280000 Bytes
Windows Disk Capacity: 31452418048 Bytes
Internal Tags: ACWF-QAG4
File System: NTFS
USB Version: 3.10
Declared Power: 800 mA
ContMeas ID: F4FE-02-00
Microsoft Windows 10 Build 19045

Thank you in advance.

 

Well there's your problem: MBUX hasn't quite reached version 7 yet!

All kidding aside, reformat your USB stick to FAT32 as that is the most compatible for legacy devices!

 

i would like to thank you for your answer but as I explained i tried with all formats and did not work. I am not sur if its MBUX7 or other my car is GLC 200 2024 and the flash drive is bought by official dealer. I would appreciate real suggestions after reading carefully my post.

 

Hi again ! I finally discovered the MBUX version as MBUX 3.2.1

 

Well, then you have NTG 8.0 (MBUX 3.0) that first debuted on the W214 E-Class then trickled down to the C236 CLE and now 2025 model year X254 GLC and 2025 model year W206 C sedan.

 

I did read your post carefully. You said you formatted as exFAT32 and I suggested FAT32! Kinda snobbish for someone who got the MBUX version wrong, yeah?

 

Hi I said that i tried all versions exfat32 Ntfs etc means fat32 yes i have done a mistake of version pf MBUX but we are here to find a solution and not to fight each other and if you had really read all my post you will realize it and not just say an easy solution which is obvious. Anyway thanks again

 

Ok, maybe your wording threw me off. There's no such thing as "exFAT32" but there is "exFAT" and "FAT32". I have never known something formatted in FAT32 to fail on any device, be it a BD player, receiver, car audio, etc.

https://www.howtogeek.com/235596/wha...exfat-vs-fat32

 

Thank you for the info I am awared but as I said no one of this format works on this usb in order to be recognized by this MBUX

 

Hi, I have the same issue after MBUX has been updated to 3.2.1. First the USB ports worked a few days after I got the car in November this year. That's why I am 100% sure it's about the latest update. The USB ports worked with my pendrive formatted to FAT32. After MBUX update I also tried out exFAT and NTFS but no format mentioned in the user manual works for me.

Regards

 

Has anyone rectified this problem? I’m having similar problems.

I bought a 2024 MLB 250 4matic last October. I’m using a 1TB thumb drive that contains about 6,000 WAV files, but the MBUX only finds about 5,200 files. I have a folder for each artist, and sub-folders for each CD/LP/cassette. They’ve all been created the same way, using iTunes to get the WAV files onto my laptop, and then I use Windows Explorer to copy the folders and files from the laptop onto the USB-C drive. Then I insert the USB-C drive into a USB-C port in the GLB.

It drives me crazy because, for example, MBUX finds The Beatles and The Who folders and subfolders, but it doesn’t find Jimi Hendrix and Charlie Daniels. All, however, are on the thumb drive and play A-OK when the drive is inserted in my laptop. Moreover, in my Simon and Garfunkel folder, MBUX finds their Concert from Central Park subfolder, but not their Greatest Hits folder. One time MBUX found Charlie Daniels, but then it disappeared.

I also copied onto an 8gb thumb drive all of the folders that MBUX can’t find on the 1TB drive. When I stuck that in the GLB, MBUX found four of the folders but not the others. Yet the folders were all copied onto the drive into the same manner. I can find no rhyme nor reason.

I’ve left a message at my dealer for assistance, but does anyone have any ideas about this?

Thanks.

 

This is what is says the system should support. There's of course always the chance MB put a build into production without it. Or there is some license they needed and have stopped paying...or perhaps folder depth or directory length limits that are not disclosed.
I could never get this to work the way I wanted it to, whether it be a MB, Lexus, Hyundai, or Ford since they stopped the iPod licenses. I would suggest storing the music on your phone and play it through there. If it is on a usb stick MBUX needs the memory, CPU, and programmers good enough to do this properly and it has always seemed that there is barely enough hardware to run without added media.

 

Thank you, bigbot45, particularly since I know I’m posting a GLB problem in a GLC thread. Your GLC owners manual, however, is virtually the same as my GLB manual. Either way, a standard (i.e., SanDisk) fat32-formatted, 1TB USB-C drive with 6,000 wav files is within MB’s specs. Except it doesn’t work. This is the first time since 1978 that a vehicle I’ve purchased does not perform as its manufacturer says it should. With vehicles from Ford, Chrysler, Toyota, GM and Honda, I’ve been able to listen to CD-quality sound the first day of ownership, which is not the case with my MB.

Sadly, my experience is that the sound quality emanating from an iPhone is not as good as that from a CD/wav file; the latter are truly lossless and non-compressed sonically.

Unless I hear from MB otherwise, I’ll try putting only FLAC files on a USB-C drive to see if MBUX is capable of reading that file type, which I understand to be identical to CD/wav in sound quality.

Thanks, again, bigbot45, for taking the time to respond last night.

 

If you have any multichannel FLAC files, I'd be curious if they work in your system. On newer cars, MB has forced you to upgrade to the Burmester 3D system to play MCH FLAC files!

 

My workaround seems to work. I removed the WAV-file folders that were on the 1TB drive that MBUX didn’t find. I converted them to FLAC files and loaded those folders onto their own USB stick. MBUX can find all 500 FLAC files, which seem to play OK, at least what I’ve tested on a spot basis thus far. The FLAC files are only stereo and not multi channel, EWL5.

 

Additional learnings that might be of interest to someone experiencing the same problems……

In sum: There were 29 of 160 WAV-filled folders on a 1TB USB-C drive that MBUX couldn’t read. I replaced those folders with 29 FLAC-filled folders. MBUX seems to have no problems reading the FLAC files. So I’ll use a mixture of WAV and FLAC files going forward.

Interestingly, after I added the FLAC folders I added two new WAV-filled folders, and MBUX reads/plays those A-OK. For reasons above my pay grade, there was something about the original 29 WAV folders that prevented the Windows/SanDisk/MBUX triumvirate from playing the music.

Also, before I shut off MBUX I now switch to radio before extracting the USB drive. When I turn on MBUX, I assure that it’s set to radio. Once the radio is playing, then I plug in the USB drive. Not sure if that is relevant, but it works, so I’ll do it that way. MB does advise to remove USB drive anyway, so this accomplishes that goal, as well.

 

It seems I'm having a similar problem on my 2025 E450 with MBUX 3.2.2 currently. I have a 256GB USB-C drive formatted at exFAT currently with 5,611 files including 2,216 FLAC files and 3,395 MP3 files. Of those FLAC files, 274 are multi-channel either in Dolby Atmos or 5.1 Dolby. Yes, I do have the Bermester 4D sound system. This has been working perfectly fine since I bought the car in August 2024. I have removed the thumb drive multiple times over the past year to add to the collection or update the collection in various ways. It normally stays in the car unless I remove it to make changes. The directory structure of the drive is \Music\[FLAC]|[HD]|[MP3]\Artist Name\Album Name. An example would be "\Music\HD\Rush\Moving Pictures - HD\01. Tom Sawyer.flac" or "\Music\FLAC\AC-DC\Back in Black\01. Hells Bells.flac". I also have multiple playlists in a "Playlist" folder at the root parallel to the "Music" folder. Everything is meticulously tagged and verified on my computer. The car (MBUX) has read that drive in the past without issue and properly indexes the list of music files where I can search/list by Artist, Album, Genre, or Track. Even when I have an Artist split between the HD, FLAC, and MP3 folder it properly combines them when I pull up that Artist.

The last time I updated the drive, I added a Buckethead album in FLAC format. I put it back in the car as I normally do and left it for the night, without turning it on. The next day, when driving the car, I noticed about half of the files were showing as UNKNOWN for Artist, Album, and Track name. I can play them fine but they show up without any album art or tag info that is clearly there. I've tried reformatting the drive (as exFAT and NTFS) and rebuilding the library and even tried another identical USB drive yet I get similar results with half or more of the tracks not reading. I've given it plenty of time to read the whole disk and even reduced it down to just a few hundred tracks (without the recently added Buckethead) and still, it will not read the tags for several files. In fact, the more I mess with it, the more files it refuses to read and show as UNKNOWN. Again, I can play all the files by navigating the folders and by playing the playlists I have on the drive, but when it's playing a file that it didn't read the tags, it shows everything is UNKNOWN. My most recent attempt with a fully loaded drive formatted as NTFS does not read a single tag and shows all as UNKNOWN. Going backwards it seems.

Any suggestions beyond what I've done so far? I have a message out to MBUSA but haven't heard back. I'm not expecting much from them though. It's as though there is an onboard cache that holds all the metadata for the files and it's reached a maximum capacity and won't read any more.

 

L1Wolf: Wish I could help you. But since February I’ve found my GLB 250 Burmester system no longer recognizes all of the WAV or FLAC folders that it did a few months ago. Based on yours and mine experience, I’d say there certainly are problems with Mercedes’ software. I, too, tried contacting Mercedes but received no response.

Does anyone employed by Mercedes read these postings? I once owned a Buick, and their customer service reps monitored and responded to forums such as this one. Does “The Best or Nothing” apply to customer service?

 

Same here. C236 CLE53. Since yesterday FAT32 formatted Usb drive with only MP3 files can not be recognized anymore.

 

I have exactlyl the same issue as described by L1WOLF. All played fine at the first entry of an USB flash drive. Then I added more files and since then Unknown Album, Unknown Artist etc.
GLC 300 2026
Anyone managed to find the root cause?

 

It has worsened and car is already not able to recognize ANY usb c drive inserted. Car is in MB service and for already a week and they are not able to figure out the root cause. It all started with Unknown album thing. They ordered new usb module but it did not fix the issue. They keep on digging in coordination with MB in Germany. Looks to me a software bug within unknown source.