NHTSA Complaint #10282931 — 2001 HYUNDAI XG300

I HAVE ONGOING PROBLEMS WITH MY CAR SINCE AFTER PURCHASE IN 2007. HYUNDAI CASE #3479162 CHECK ENGINE LIGHT WAS GOING ON AND STAYING ON UNLESS THE BATTERY WOULD DIE.FAILED EMISSIONS SAID TO BE CAUSED BY AIR SENSORS BUT CODES KEPT GETTING WHIPPED OUT.CAR HAS BEEN TO DEALER COUNTLESS TIMES! CAR LUNGES THRASHING MOTION WHILE AT A STOP OR DRIVING.THE AIR BAG LIGHT STAYS ON AT ALL TIMES,THE FIRST TIME THE LUNGING HAPPENED I THOUGHT I WAS OUT OF GAS, WITH THE EXCEPTION OF THE VIOLENT THRASHING THAT OCCURRED/S. MY CARS CONTROL PANEL,HEADLIGHTS AND INTERIOR LIGHTS DIM,SHUT OFF AT WILL. ALL RADIO & CONTROL PANEL LIGHTS COME ON AND GO OFF AT ANY TIME.THE RADIO STARTS CHANGING FROM FM TO AM TO CD AT ANY GIVEN TIME INCLUDING WHILE THE CAR IS TURNED OFF AND UNATTENDED. THE TAIL LIGHTS, BRAKE LIGHTS AND RUNNING LIGHTS ALSO TURN ON/OFF BY THEMSELVES WHETHER DRIVING THE CAR OR IF THE CAR IS SITTING IN MY DRIVEWAY. I HAVE TO GET MY CAR JUMPED EVERY TIME I GO TO START IT .IT WASN'T UNTIL EARLIER THIS YEAR THAT A NEIGHBOR CAME TO LET ME KNOW THAT I LEFT MY LIGHTS ON IN THE MIDDLE OF THE NIGHT. I KNEW NOBODY HAD BEEN IN MY CAR BECAUSE I WAS RECOVERING FROM A MAJOR SURGERY AND MY CAR KEYS ARE ALWAYS WITH ME. THIS INCIDENT WITH THE NEIGHBOR SHED LIGHT ON PART OF THE PROBLEM. NOW I KNOW WHY MY BATTERY IS CONSTANTLY DEAD.I JUST DON'T KNOW WHY THE CAR IS TURNING ON IT'S ELECTRICAL COMPONENTS.THE ONGOING PROBLEM WITH THE BATTERY DRAIN HAS CAUSED THE CODES FOR THE CAR TO KEEP BEING ERASED SO THERE IS NO WAY TO DIAGNOSE CAUSE FOR THE CHECK ENGINE /AIR BAG LIGHT COMING ON. IT'S FRIGHTFUL THAT THE LIGHTS GO ON OR OFF, DAY OR NIGHT, WITHOUT CAUSE.THIS IS VERY DANGEROUS WHILE NIGHT DRIVING! THE STALLING OUT WHILE DRIVING CAUSES COMPLETE LOSS OF THE STEERING/BRAKESCONTROLS AND ALL POWER. I AM TERRIFIED OF HWY DRIVING NOW! I COULD CAUSE AN ACCIDENT THAT MAY KILL ME OR SOMEONE ELSE!THE THRASHING AND LUNGING OF THE CAR SCARES ME. THE ELECTRICAL IS GOING ON AT LEAST 8X DAY/NITE. THIS CAR IS DANGEROUS! *TR