Your heating system is covered for manufacturer's defects for 36 months / 36,000 miles from the original in service date of the vehicle. If there is some kind of climate control concern and you are inside that criteria, you should be covered.
RepairPal Certified shops can diagnose and repair your 2015 Dodge Challenger. They provide transparent pricing with a minimum 12-month or 12,000-mile warranty on repairs and services.