SL-Class (R231) 2013 on: Discussion on the SL550

SL/R231: MB 30 pin music interface connector - device unavailable

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Old Mar 12, 2025 | 12:21 AM
  #1  
G. Rosales's Avatar
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From: Austin, TX
2013 SL550, Past: 2015 C250, 2007 R350, 1972 280SE, 2006 R500, 2003 E320, 1998 C230K
MB 30 pin music interface connector - device unavailable

So I purchased an original MB 30 pin to lightning music interface.
The console shows no decide available, but the music plays!
The audio quality is noticeably better than Bluetooth, but the display shows "no playable files".
My car is a 2013 SL550, my phone is an iPhone 13.
is this a compatibility issue?





Display shows \"no playable files", but the music is playing. Tried itunes and spotify.

Phone is connected but Media shows no device available.

Last edited by G. Rosales; Mar 12, 2025 at 12:26 AM.
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Old Mar 12, 2025 | 09:37 AM
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2020 GLC300 -2014 Sl550 - 1997 SL600
first thing I would try is to reboot NTG.
Hold the “ON” button down (next to keypad in your pic) until you see the screen turn off and on again. Takes about 10 seconds or so.
This is the equivalent of rebooting your PC….

Was this adapter an MB part? Wouldn’t surprise me if there were knock off’s floating around….

Good Luck.



Last edited by crconsulting; Mar 12, 2025 at 09:38 AM.
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Old Mar 12, 2025 | 09:28 PM
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2013 SL550, Past: 2015 C250, 2007 R350, 1972 280SE, 2006 R500, 2003 E320, 1998 C230K
Thanks for your advise.
I rebooted the NTG and tested. Theee times.
Still device not available.

The adaptor i bought seems legit.
see pic below


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Old Mar 12, 2025 | 10:19 PM
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Adapter looks good, at least visually.
Originally Posted by G. Rosales
My car is a 2013 SL550, my phone is an iPhone 13. is this a compatibility issue?
I can tell you it should work, I’ve used mine with an iPhone 12.

First trouble shooting step I would take:
Is it the iPhone or car? Have access to another phone?

Last edited by crconsulting; Mar 13, 2025 at 12:17 AM.
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Old Mar 13, 2025 | 04:37 PM
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S560/SL550/LS460/Q70L 5.6 AWD
This is what I have and it is working
A0038270904 •
MI -Lightning
07.08.13/ 20452452
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Old Mar 15, 2025 | 01:43 AM
  #6  
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2013 SL550, Past: 2015 C250, 2007 R350, 1972 280SE, 2006 R500, 2003 E320, 1998 C230K
Thanks to all for your input. I tried with a different phone and still get "device not available".
I guess I was sold a bad adaptor.
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Old Mar 15, 2025 | 11:00 AM
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May be the interface connector, but it may be the car too. Where did you buy the Interface connector?
I have the same part number as you and it works. I currently use mine with an iPhone 16 pro and an Apple lightning to USB C adapter.
Obviously without a way of reading any hidden codes in the car, you’re limited to swapping parts. 🙁
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Old Mar 16, 2025 | 12:37 AM
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I bought the adaptor on eBay.
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Originally Posted by tx170754
This is what I have and it is working
A0038270904 •
MI -Lightning
07.08.13/ 20452452

mine is the same part number And date (2013) with a different last code. Mine has the right angle on the lightning plug. It works correctly in a ‘13 63. These became very hard to find new oem at a reasonable price a couple years ago. You might wanna look into some European supplier options. The cable should be about 50 bucks but nowadays sometimes they are close to 200. Be careful when buying used because similar to every other ****ty Apple lightning cord breaking at the connection point, these do the same.
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Old Mar 25, 2025 | 10:13 PM
  #10  
G. Rosales's Avatar
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From: Austin, TX
2013 SL550, Past: 2015 C250, 2007 R350, 1972 280SE, 2006 R500, 2003 E320, 1998 C230K
Finally got it working.
I purchased another adaptor cable, part number A0038270904
and it did the trick.
Evidently, my previous purchase had a malfunction.


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