Lifetime Premium Member
Date registered: Jul 2008
Vehicle: 2005 CLK500 w/23K !
Mentioned: 3 Post(s)
Quoted: 40 Post(s)
If you dig through my old posts searching by "command" and "sys" and "serv" you will find that these particular units are only perfect for 2008-9.
Will work in a 2005-7 but you won't be able to change the time and the dash and Comand will be showing different times.
That said, $100 is a bargain. I had one just like that sitting on a shelf and I still got $250 or so on Ebay.
I figured it all out the hard way, not trying to rain on parade of OP, trying to save someone the weeks of grief it took me to figure it out.
All about whether the button says "SYS" or "SERV"