Just went through the same problem with a '99 CLK320 that I purchased. One thing that ILUVMILS failed to mention is that you have to have the unit installed by an authorized MB stealership. Ended up costing me $1,472.00 although I did get a quote from another stealership, four hundred miles away, that would do it for $1,295.00.

Changing the batterys in the key will have no effect. One thing that you might try, if the remote opens the doors, is to clean the window in the EIS module. I got the old one back and noted that dirt was caked on the window inside the opening. Took a Q-Tip and some nail polish remover and cleaned the window. Don't know if that will help, but it sure won't hurt.

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Roc

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