Hyundai Elantra HD: Filter inspection
The climate control air filter should be replaced every 10,000 miles (15,000 km). If the vehicle is operated in the severely air-polluted cities or on dusty rough roads for a long period, it should be inspected more frequently and replaced earlier. When you, the owner, replace the climate control air filter, replace it performing the following procedure, and be careful to avoid damaging other components.