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CD changer and comand issue

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Old Jul 15, 2014 | 04:43 PM
  #1  
GreigM's Avatar
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R320L CDI
CD changer and comand issue

I've got a 06 R320 CDO and comand has recently stopped working. You press the power button and the logo appears for a few seconds then it switches itself off.

So after a bit of research it seems that this is generally caused by an interruption to the MOST bus - either a break in the fibre optics or one of the devices being faulty. So a quick look around and the CD changer (CDC) in the glovebox appears dead - I can't eject any of the discs and no lights appear on the unit when pressing the 1-6 buttons.

My question is - even if there is another fault in the system somewhere, if the CDC was operating ok itself would I still be able to eject discs even if something else was causing the comand unit to shut down, or would this fault also prevent the CDC ejecting correctly?

Trying to avoid another trip to the dealer, so if a can fix this with a used CDC unit that would be my cheapest option.
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Old Jul 15, 2014 | 06:58 PM
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'19 E63S sedan
It sounds like the CD unit is dead. Because it is, it's not relaying MOST data. It's not the other way around (MOST interrupted causing the CD to fail).
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Old Jul 15, 2014 | 07:54 PM
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beater with a heater
or the fuse is blown to it (cd changer)

Last edited by jbondox; Jul 15, 2014 at 07:54 PM. Reason: because
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Old Jul 16, 2014 | 03:14 AM
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R320L CDI
thanks, I've checked the fuse and its fine, will source a new unit
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