2004 Hyundai Sonata Electrical system Problems

“Emergency flashers on my 2004 Hyundai Sonata began flashing for no apparent reason and could not be turned off (ignition was off), this continued for 15-30 minutes from the time it was noticed (neighbors knocked at the door to report that the flashers had been left on). The occurrence repeated several times throughout the night and the next day. Accessing the vehicle using the keyless entry, the doors re-locked themselves, and this repeated each time I unlocked them. …”

“The AC/heating electric [fan] control comes on when it wants to but will not activate when turned on. When taken to a mechanic on 3 occasions, it activates and remains on for days then stops and will not come on again. Mechanics do not want to work on it unless it does not work at all. Everyone wants to investigate and charge me accordingly but no one wants to tell me the actual problem. This had been going on for many months on my car, as well as other Hyundai models. …”

“Drove car 3 miles from point a to point b. It was parked at point b for approx 45 minutes. Then driven 300ft to point c. When I got out of the car, I smelled something unusual but I thought it was the auto shop next door. When I went into the store, an employee looked through the glass window and shouted someone's car is on fire. I looked and saw it was my vehicle. There was smoke coming out of the hood. The car no longer starts. I will write again to update on diagnosis from Hyundai.”

“Sub frame on front passenger rusted and corroded. Caused damange to cv axle on same side. Caused alignment issues on front end. Causes tires to wear quickly, within a week. Anti theft system locks the car while driving and causes alarm to sound while driving and must open other doors and stop driving to stop the alarm from going off, headlights and dash lights and tail lights come on when brake is pressed and go off when brake is released but this problem only happens when headlights are not in use”

“Suspension failure july 2016-both engine mounts and lower control arms failed. Replaced 2016 july. April 2017 both engine mounts and lower control arms failed again. In addition violent jerking while driving,then loss of power. Usually occurred going up hills,coming off from making a turn or driving speeds under 25mph.brake lights remain on unable to indicate stopping to other cars.unable to safely drive and maneuver the vehicle. Brake lights remain on whether driving or in park. …”