W209 Upgrade to Comand 2.0 Wiring ?
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Junior Member
Joined: Mar 2007
Posts: 26
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From: Daytona Beach, Florida
2005 SLK55
**UPDATE** W209 Upgrade to Comand 2.0 Wiring?
**UPDATE** I received step by step instructions on how to install this with the original wiring loom - If you have the same unit going into the same car I can help you. 
I purchased a Comand 2.0 unit (A203 827 37 42) to replace the stock radio (A203 820 25 86) model CM1330. One of the square wiring plugs used with the old radio does not fit the new comand unit.
The system lights up, etc, but there is no sound at all, I am assuming the unplugged block is the problem.
Has anyone else put in a Comand unit in their W209 who can advise me on what needs to be done, what adapter, etc...
Thank you, in advance.
I purchased a Comand 2.0 unit (A203 827 37 42) to replace the stock radio (A203 820 25 86) model CM1330. One of the square wiring plugs used with the old radio does not fit the new comand unit.
The system lights up, etc, but there is no sound at all, I am assuming the unplugged block is the problem.
Has anyone else put in a Comand unit in their W209 who can advise me on what needs to be done, what adapter, etc...
Thank you, in advance.
Last edited by maestro89; Oct 9, 2008 at 03:05 PM. Reason: Problem solved, share solution
Newbie
Joined: Oct 2018
Posts: 9
Likes: 2
From: Bristow, VA
CLK 320
CLK-Class (W209) head unit replacement
Wal when you said C1 - C2 connector what are you talking about..because I'm currently trying to replace my COMMAND HU with Alpine ...I'm getting power and the steering wheel control but no sound ..Your assistance appreciated
