It is water under the bridge now. You could have a working Keyless for $50 and 30 minutes install time, plus technical support. Just read the testimony from happy customers. I have one for sale if you are interested.
http://www.peachparts.com/shopforum/mercedes-used-parts-sale-wanted/334620-fs-w124-chasis-keyless-remote-%2450-shipped-8.html
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