That car is still supported by Chyrsler, the Crossfire isn't - that is the primary reason this site was founded, to support a car no longer supported.

If you dont know of a local shop that you trust and you have an odd issue with the car, Id suggest going to a dealer. The reason I tell our members to NEVER go to a dealer is because our car is not supported by Chrysler or Mercedes.
You car is still supported by Chrysler, if all else fails, see a dealer.

Google shows five dealers in Perth.