Hey eagle670 , if the car dies on you and then doesn't even try to turn over and by that I mean the engine DOES NOT make any sound indicating that it wants to turn on
but cant! If like you said, makes no sound only the dash lights come on and radio etc and sometimes it will turn back on right away sometimes it will take 1 or 2 hrs .. if so, IT IS NOT YOU CRANK SENSOR.... Like everyone above has been saying and I also confirm this .. it is your RCM ( Relay Control Module ) these cars are popular for having the problem and that is most likely why the previous owner sold it and you got stuck with it ... It happened to me too and to many of us on this forum .. You need to replace the RCM, it's an easy job, it is by the car battery to the right of it, inside a black box with a removable lid / door take door off from the black box and disconnect the rcm and put the new one in .. It cost me about 150 4 years ago .. go to a Mercedes dealership and get a RCM (Relay control module) for Mercedes SLK 320 and whatever year your crossfire is, do not go to Chrysler they will probably want 500$ for it! Good luck any more questions feel free!