Seven problems related to headlight switch have been reported for the 2011 Hyundai Sonata. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2011 Hyundai Sonata based on all problems reported for the 2011 Sonata.
2011 Hyundai Sonata. My headlights and interior started blinking off and on by themselves while I was driving at night for about a 30 or 40 second interval. Took to dealership and had it diagnosed and they found that the there was an intermittent internal fault with the multi-functional switch. Just got it back so I've only driven it about 50 miles at night so far no problem but it's too early to say for sure if this fixed the problem to my satisfaction. The problem only happened about 3 times but it is unpreditcable when the problem occurs but when it does happen and it's dark, it's not safe so we took it in right away on the third time because this was the longest period of time that the problem lasted. If you're having any problem like this, I suggest you get it looked at right away, very dangerous. It cost me $209 to have it fixed. The vehicle was moving about 55mph when this occurred. Date was 10-17-2019.
The first problem is about the headlights when turning the car on whether it is stationary or in motion, the headlights intermittently blinking or cutting off shortly which is dangerous when driving in dark. The problem may be related to the multi-function switch. The second problem is related to the battery, the battery on this car, 2011 Hyundai Sonata GLS, can not last long and it needs to be replaced every couple of months. The problem is related to parasitic electricity in this model as the dealership told me. It might be caused by electricity drainage on the radio part. The third common problem in this model is the overheating engine. I realized the radiator fan is not working until I stop the car, open the hood, and then give the fan blades a push! also, the fan can turn on by itself only if I turn on the ac on high blowing level.
Headlights flicker and/or switch from low to high beams when using turn signal. The turn signal stalk contains the on/off/auto switch for the headlights as well as the high/low beam selection. This problem has happened several times when turning on the blinker or even when the turn stalk returns to off after completing the turn. It appears to be a short or bad contact in the turn signal and seems to only happen when the turn stalk is actually being moved or manipulated. This causes the headlights to flash or blink on the high beams and when they momentarily go to the off position the dash lights go to full intensity (just like during the day when the lights are off).
While driving at night, the headlights will turn off when using the turn signal or turning on the high beams, I have to wiggle the headlight switch to get them to come back on. I have sent Hyundai an email concerning this problem as it is a very serious safety issue and the problem is getting worse, but of course there has been no response from Hyundai. With all of the complaints on the internet about this problem. Hyundai needs to issue a recall.
With headlights engaged at night (with headlight switch in auto or manual) the dash lights will flicker and headlights will momentarily go out when the turn signal is engaged. The lights will also flicker occasionally without having turn signal engaged. The parking lights will come on and stay on after ignition is turned off with headlamp switch in automatic mode while car is parked.
2011 Hyundai Sonata defect in the light stem switch that causes headlights and dash lights to flicker the consumer stated he began to experience occasional episodes of flickering headlights, especially when switching between high and low beam.
The contact owns a 2011 Hyundai Sonata. After turning off the vehicle, the key could not be removed from the ignition switch. The vehicle was taken to the dealer and the starter motor was replaced, but the failure continued. In addition, the front driver side seat belt malfunctioned and would not remain locked, and the headlights and brake light would shut off while driving. The cause of the failures was not diagnosed. The vehicle was not repaired. The manufacturer was notified. The VIN was not available. The failure mileage was 12,000.