One problem related to battery 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.
The brake lights stayed on all night after car was put in park and engine was turned off, causing battery to lose all power. This could be caused by a faulty brake/stop light switch. A recall was issued for brake/stop light switch on different years and models of Hyundai vehicles. My 2001 Hyundai Elantra GLS was not included in the recall but probably should have been.