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I say BOTH? Looks like you need much more information than posted, and for you reading the forum posts. Could be a variety of things. One thing that has been said of the crossfire, don't jump them. The electronics do not like the surges in the electrical systems. So, peruse the forum and let some members come in to help some. BTW, IF you have a power drain in the car electrical system, a 2 year old battery does not mean much if the battery has been habitually discharged. A few common parts are suspect, but you'll need a few more pieces of information posted here to help us help you. IF this is beyond your capability, find an independent European mechanic familiar with a Mercedes Bend SLK-320, model year 2003/2004 (car's electrical system is almost identical). DO NOT TAKE IT TO A BENZ OR CHRYSLER DEALERSHIP!


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