FlyingBear

I have a 256GB USB-C thumb drive installed in the top USB-C port in the front cubby, and a 256GB USB-C thumb drive in the bottom port.. The top port is for the built-in dashcam, and the lower port has my CD collection ripped into Apple lossless files. This has worked perfectly, including on a trip today.

After today's trip, the MBUX 2.4 update message popped up on my central screen, and I followed the instructions to perform the update, which appears to have worked just fine.

However, while the dashcam still works correctly, the music drive isn't recognized and I get a message "Port 2 device unreadable". Moving the drive to the ports under the center console storage yields messages that port 3 and 4 are unreadable.

Has anyone else experienced this? I'm guessing that the thumb drive size/format and/or music format specs have changed, but it would be odd to break something that worked before. As nothing changed except for the MBUX 2.4 update, I have to pin this problem on that.

FlyingBear

The plot thjckens: when I removed the dashcam and music thumb drives from my SL63 and moved them to my PC, Windows warned that the data on the drives was corrupted. Indeed, the dashcam video files from before the MBUX 2.4 update were playable, but not the ones after the 2.4 update. None of the music files were playable. An MBUX update that corrupts user files is unexpected and Not Good.

I reformatted the dashcam drive and now it seems to work ok. But after reformatting the music drive, it's not recognized by the car. I put a handful of files onto another thumb drive and that worked once or twice before stopping.

My working theory is that the update didn't complete correctly and needs to be redone, by my dealer.

FlyingBear

In case this helps someone else with the same problem, I was able to fix it: resetting and rebooting MBUX cleared the problem and the USB-C ports once again recognized my music thumb drive. The files on the drive were corrupted so I had to reformat it and copy my files onto it again. Also, the dashcam video recordings after the MBUX 2.4 update were corrupted and I deleted them.

drgek

Has anyone else had this issue?

drgek

Mine updated today. Ports seem to be working fine with no apparent corruption of my music files

Spotty-Dog

How do you reboot the MBUX system? I am having problems getting the music stick working alongside the dash cam stick. I got my 2024 SL63 in late June so presumably the May update you refer to was already in place. I'm also having problems getting Android Auto to load. Perhaps a reboot will solve some of my problems.

FlyingBear

@Spotty-Dog I can address several issues at once:

1, You can soft reboot the MBUX by using the on/ff button that's below the large central screen. You can factory reset it by navigating through the system menus. However, that is a PITA because you have to re-enter all your personal settings. It's a last resort if you can't get the MBUX to work correctly. That includes setting up the easy entry, which can only be set up with the engine running! You gotta love German complexity.It appears that leaving the car off and locked for, say, an hour, also performs a reboot, most likely a soft reboot. But it may be somewhere between a soft reboot and full factory reset...I can't tell.

2.My USB-C ports suddenly stopped working again, 5 minutes into my drive from home to my dealer to perform all the recalls/updates required to get $4,000. The dashcam notified me that it was no longer recording, and the music stopped. My dealer performed all the work, including replacing the media system module. The technician told me that this was a known issue with the media system. No issues since.

3. It is tricky to get the built-in dashcam and music on a USB stick to work correctly together. The dashcam often ends up writing video to the music USB stick. The fix is to go into dashcam app, stop recording, and press the little USB stick symbol in the middle of the dashcam app screen. Push that symbol and a menu pops up allowing you to select which USB stick to use for dashcam recordings. Make sure that the the music USB stick isn't selected. This is made easier if you name your dashcam USB stick and music USB stick on your PC/Mac. Then in the media search screen, select the USB stick that you want to listen to. Sometimes, the music app in MBUX will "play" the dashcam stick. The clue is that the "album art" will be an image from the dashcam. These problems tend to arise if you remove either stick and replace it, and MBUX gets confused about which is which. In that case, you set it up again as I just described. I use the top USB-C socket that's under the sliding cover for the dashcam, and the one below for music. I also use one of the ports under the armrest for another music stick; the media system lets me select either music stick for playback. Again, naming the sticks makes this easier to navigate.

HTH!

Spotty-Dog

Thanks for your reply. I tried the soft reboot as suggested but it didn't seem to make a difference. One thing I did try, is partitioning a 512 gb sd card into a partition of 70 gb for music and the remainder for the dash cam. As my music is about 65 gb, this left a small portion of the small partition unfilled. I believe the dash cam is using the large partition, but if that gets full, rather than erasing the oldest, I think it is using up the remainder of the small partition. I'm going to shrink that partition to the exact size of the music, and expand the large partition to make up the difference.
This is all just become an academic exercise at this point because 1) I never listen to music when I have the top down, which is always now that we are in the good weather and 2) if I do for some reason want to listen to music, I can just stream it from my phone. However, it is an annoyance, just as not being able to re-establish Android auto. But that is for another time.

I too get the periodic notice that the dash cam won't be used because of some kind of failure. Perhaps when it runs out of space but it just starts up as usual next time the engine is started. One would think that Mercedes could get this act together?

Raulr

What if you just leave the music on one single partition. And the recordings will also use the same partition?
You should be able to play music, and the recordings will just overwrite themself when the card is full.
I will try it like this, but my card is 1GB and doesn’t get full that fast. I am not sure what will happen..

FlyingBear

@Raulr I believe that you're correct. I have a dashcam USB stick and a music USB stick plugged into the two USB-C ports under the sliding cover.. The music stick is almost full. When I've removed the music stick to update my music library, the SL63 gets confused and often writes dashcam videos to the music stick. It stops when the music stick is full and does not delete any music.

Spotty-Dog

I'm going to try this, with the dash cam as one folder and the music in another folder, all in the same partition. There are only so many options, so hopefully this works.

Spotty-Dog

I think the error when this happens to me is that the memory stick is too slow, maybe because ii is thinking about what it should delete.

FlyingBear

The dashcam app will create a Dashcam folder on the root of your USB stick and should leave the music folder(s) alone. My experience is that it will fill up the USB stick by creating video files in the Dashcam folder. It will then delete the oldest video files as it creates new ones. There's a chance that it deletes music files, but I don't think that will happen.

Spotty-Dog

Well my solution of one partition, with a dash cam folder and all music separate didn't work either. I took it to the dealer and sat with my salesman in the car for about 1/2 hour trying to get Android Auto re-installed (I had removed it earlier but now changed my mind). In the end, we did get it going and I can listen to music that way. I'm just going to let the dash cam jealously guard it's right to the USB ports and call it a draw.