Date registered: Jul 2005
Vehicle: 90 300E, 99 ML430, 00 ML320, 05 E500 4matic Wagon
Mentioned: 18 Post(s)
Quoted: 878 Post(s)
When that happened to me it was the AGW (audio gateway).
It was replaced with a genuine MB rebuilt part from the dealer and been fine ever since.
However they used the MB star computer to diagnose and then code it to my vehicles audio options.
The can randomly shut down for other reasons and if the COMAND is indeed faulty then the best bet is to get one from a breaker and make sure you get the original car's VIN and the COMAND has a serial number on it so a dealer can install it with the correct numbers needed.