Do Not go to a Chrysler or Mercedes dealer ... if you are not able to work on it your self find an independent local shop that works on Mercedes ... we need more information about the vehicle . you already said it's an 2004 , is it automatic or standard shift , coupe or roadster , and what part of the country do you live, city and state ... you can find a lot of good information here, I'm sure someone will be along shortly to point you in the right direction