The contact owns a 2013 Hyundai Veloster. The contact stated that while replacing the control switch to the air conditioning unit the contact discovered that the electrical wiring harness was burnt and melted. Also, while accelerating from a standing start the vehicle was hesitant and paused before accelerating properly and the transmission was also stuck in sports mode. The cause of the failures was not determined. The manufacturer and local dealer were notified of the failure. The failure mileage was 29,000.