One problem related to defogger controls has been reported for the 2001 Hyundai Elantra. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2001 Hyundai Elantra based on all problems reported for the 2001 Elantra.
While air system is cut off outside air still enters vehicle. Out side air enters both in fresh mode and recirculation mode.