RepairPal Certified shops can diagnose and repair your 2005 Mercedes-Benz SLK350. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.
It's very hard to quote this until you have a proper diagnostic test performed to see what needs to be done to repair it. Check with some local shops near you for experienced technicians who can help: https://repairpal.com/mercedes-benz-within-10-miles-of-bronx-new-york-10467