SL-Class (R230) 2003 -- 2012: Discussion on the SL500, SL550, SL600

SL/R230: SD card in 09 SL550 strange behavior

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Old May 14, 2020 | 12:45 AM
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vkovaler888's Avatar
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2009 SL550
SD card in 09 SL550 strange behavior

Hello all,

when I use SD card to listen music I noticed very strange behavior, maybe it is by design. If SD card has more than 8000 songs in 400 folders, the COMAND system does not display all of songs/folders. The system shows only a few of them. Does anyone have any information on this? Thank you
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Old May 14, 2020 | 01:17 PM
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Originally Posted by vkovaler888
Hello all,

when I use SD card to listen music I noticed very strange behavior, maybe it is by design. If SD card has more than 8000 songs in 400 folders, the COMAND system does not display all of songs/folders. The system shows only a few of them. Does anyone have any information on this? Thank you
Yes, command reads only certain formats and bitrates
convert all the song to that format and you will see all

easy to find just pick one of the songs you can see, then on a computer lookup format
then convert all other songs to this format

have fun
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Old May 14, 2020 | 10:11 PM
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2009 SL550 Roadster Diamond White, 2008 CLK550 Coupe Obsidian Black
It's normal. Depending on what version of Comand, there are limitations to how many files it can read per folder. For example, in our 09 S550, the Comand 3.0 can only read up to 250 songs in a folder, if I remember correctly. The Comand 2.5 in the SL can read more than that (not sure how many, but I don't have any folders of songs that are 300 or more). One really annoying issue I've noticed is that on both vehicles, the shuffle tracks in a folder does not work properly. It ends up shuffling between folders too versus on a Mercedes with Comand 4.0, 4.5, or 4.7, which the shuffle works properly. The older systems definitely did not have as much taken into account by the engineers (such as not reading the mp3 file data). Not sure if anyone else has found any solutions to any of these issues.
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Old May 16, 2020 | 09:50 AM
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I forget what the limits are, but there are limits, which are songs, folders, etc.but I forget what they are for this car.

I did run into this issue a couple of years ago when I got my SL and this is the directory structure I used to solve it, as well as make it MUCH easier to find albums:
  • Genre
    • Artist Name Range*
      • Artist
        • Album
* Artist Name Range is simply a sub-folder grouping for when you have a long list of Artists in a particular Genre. For example, I have 10-20 Classical artists and Jazz artists, so no need to sub-group those. But Rock I must have 100 artists (big classic rock listener). Best explained by an example
  • Rock
    • A-F
      • Dire Straits
        • Brothers in Arms
        • Communique
        • Making Movies

FWIW, I have a 32GB card in my 2009 (never tried a larger card despite having the software upgrade done to accommodate the 32GB card) since SDHC tops out at 32GB. I forget how many songs I have, but it's not more than a few thousand on this card.
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