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Created: 16 Sep 2007

Last Updated: 29 Dec 2007

There are various Audio and COMAND APS systems available in the Mercedes Benz R Class. Although the ML / GL is the same platform as the R class, and many parts are the same (such as CD changer), it seems that COMAND APS units have different part numbers.

Units differ between  countries, with the COMAND-APS systems being completely different - even map disks won't work between the units. The US unit has an optional, retrofittable, navigation unit and are made by Apline. The European COMAND units all have navigation but can not play MP3 and are made by Becker.

Mercedes regularly "replace" a given part number with a new one, the latest ones are lower down the list below. Sometimes more than one "current" part number is given in the MB catalogue.

Country Description Part Number
Europe Audio 20 (option code 523) A251 820 94 89
  Audio 20, replaces above A251 820 78 89
  Audio 50 APS (option code 525) A251 820 10 79
  Audio 50 APS (replaces above) A251 820 15 79
  Audio 50 APS (replaces above) A251 820 25 79
  Audio 50 APS (replaces above) A251 870 40 89
  COMAND APS (option code 527) A251 820 09 79
  COMAND APS (replaces above) A251 820 22 79
  COMAND APS (replaces above) A251 820 26 79
     
USA/Canada MCS-II , no Navigation, option code 528 A251 870 07 89
  MCS-II (replaces above) to Jan 2007 A251 870 16 89
  MCS-II, no Navigation, no backup camera connection A251 870 35 89
  MCS-II,  no Navigation, with backup camera connection A251 870 47 89
  MCS-II, no Navigation, opton code 530 A251 820 07 79
  MCS-II (replaces above) A251 820 17 79
  Navigation module for all above A164 820 60 89
  Navigation module, replaces above A164 820 06 85
  Navigation module, replaces above A164 820 52 85
     
Japan COMAND, option code 529 A251 820 43 89
  COMAND, replaces above A251 820 44 89
     
ALL CD Changer A211 870 38 89
  CD Changer, replaces above A211 870 61 89
  CD Changer, replaces above A211 870 53 90
 

NOTE, CD changers are sold under an accessory part
starting with B or Q and its often cheaper to purchase
it that way.

 


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