2007 S550 Radio Dial
This thread lists related problems with COMAND radio menu and Microphone.
If the link doesn't work go to the B e nzworld.org W221 forum and search for "audio electrical command issues"
These were my symptoms:
Next I noticed the Voice Command button no longer gives a beep or responds to commands.
I tried a commercial audio CD, same audio cut out problem.
Yesterday I also noticed the party on my Bluetooth phone call could not hear me, though I could hear them over the COMAND audio.
The menu operation is normal.
The problem was a failing Voice Command Module 221-870-38-87 and connector 000-401-09-14, both were replaced and the problem has been fixed.
Also the report mentions a software update was performed, though I already had the Birds eye view Nav and Video player update applied.
My newly installed winter tire package was not reading the tire pressure and they replaced sensors in two wheels to get it to read.
Hopefully my vehicle won't be back in the shop for a while. Everything was covered under my MB extended warranty, my bill was $16 as the dealer passes through the $2/day state rental taxes.
Let us know what you find.
Last edited by HiTach; Dec 6, 2012 at 10:27 AM.
Read more: http://www.motortrend.com/roadtests/...#ixzz2EXqSvx9t





