Electrical Failure problems of the 2003 Hyundai Elantra

The contact owns a 2003 Hyundai Elantra. The contact noticed that the air bag indicator light kept illuminating. The dealer repaired the failure and diagnosed it as the air bag sensor. Approximately 60,000 miles late, the failure recurred. Also, currentl ythe electrical system failed. The contact stated that the radio activated automatically, the volume increased, and certain lights inside the vehicle, such as the air conditioner controller lights, failed to illuminate. The contact had the radiator replaced . In addeition, the tires were constantly wearing out, and she was about to purchase fourth set in less than two years. She has not spoken with the manufacturer about the failures. The current mileage is 73,000 . And failure mileages was 45,000. Abl. Pco.