You could build this tool:

http://members.aol.com/ajdalton7/ledtool.jpg

And use the leads that pcmacher posted.

I also build and sell the tool along with the code descriptions and instructions - see the eBay link in my signature.

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Daily Driver: 02 E430 4MATIC
In the family: '03 E500 // '04 ML500 // 64 220SE