If you have a warning light on, you have a diagnostic code that will point you in the right direction. Thing is you have to get someone with the proper scanner to get that code.
On this forum there is a list of repair shops who are knowledgeable with the Crossfire and some make this car their specialty. two in FL are Dual Sport Dad and Miami Matt.
Remember our cars are a product of Mercedes and so they will scan as a 2002~ 2004 Mercedes SLK 320. It is a hybrid system on the Crossfire so not all things work with the Mercedes scan, but that is what many of us find most helpful. Here is the shop listing click the link and look at the Mechanical section in the listing. You will find many in FL Crossfire Repair