Which parts fail
Components named in complaints (headlights, tail lights, turn signals, interior lights).
Mileage when the problem started
Owner reports
Selected complaints filed with NHTSA by 2015 Hyundai Sonata owners, lightly cleaned up (personal details are redacted by NHTSA).
The contact owns a 2015 Hyundai Sonata. The contact stated that after the vehicle was at the dealer for a routine oil change and an engine flush, the following day while driving at approximately 10 MPH in a stop-and-go school zone, the vehicle stalled and smoke emitted from underneath the hood. All the warning lights on the instrument panel were illuminated. The contact merged to the shoulder of the road and safely exited the vehicle. The vehicle was engulfed in flames. The police department was at the scene and attempted to extinguish the fire. The fire department later arrived and successfully extinguished the fire. The contact mentioned that the flames consumed the vehicle and only the framing was left but it was not determined destroyed yet. The vehicle was towed. A police report was filed. …
The contact owns a 2015 Hyundai Sonata. The contact stated that after having her vehicle serviced under NHTSA Campaign Number: 21V749000 (Exterior Lighting, Electrical System) the exterior and interior lights would turn off while driving at various speeds, with the check engine and oil warning lights illuminated. The contact also stated that upon using the turn signals, the headlights would intermittently turn off; however, the headlights would turn on upon toggling the light switch. The contact had initially taken the vehicle back to the dealer where she was given a diagnostic fee to determine the cause of the failure. The vehicle was then taken to an independent mechanic where she was informed that the E-CVVT actuator was defective. …
The contact owns a 2015 Hyundai Sonata. The contact stated while driving 60 MPH, the vehicle stalled without warning. The contact coasted the vehicle off to the shoulder of the highway and the vehicle was towed to an independent mechanic. The contact then discovered that the vehicle was included in NHTSA Campaign Number: 21V749000 (Exterior Lighting, Electrical System) which the mechanic linked to the failure. The vehicle was then towed to a dealer where she was informed that the part was on backorder. The manufacturer was notified of the failure. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The vehicle was not repaired. The failure mileage was approximately 100,000. Parts distribution disconnect.
after taking my 2015 sonata eco to the dealership for campaign 993; campaign 210; and, campaign tww 15-17 I have experienced the following issues: RIGHT TURN SIGNAL STOPPED WORKING ALARM GOES OFF 5 MINUTES AFTER LOCKING THE VEHICLE DASH INDICATES MY REAR DRIVER SIDE DOOR IS AJAR WHEN IT IS LOCKED Prior to having the service done my vehicle did not have any of this issues. RUSNAK Hyundai Inland Empire has not been helpful in resolving these issues. I am being asked to pay to diagnose the issues that were not present prior to the software updates.
There was a recall on my car maybe a year ago for an issue with the turn signals. The driver might turn on the right turn signal but the car would show the left turn signal to other drivers. I had the recall work (software update) done at my local Hyundai dealership several months ago. Since then, I have a new issue with the turn signals/headlights. When the headlights are in "auto" mode at night, turning on the turn signal causes the headlights to turn off. The headlights don't turn back on until you straighten out the wheel. This is a major safety concern because for a few seconds, I can't see anything and other drivers can't see me. I have researched this on Google and found several other Hyundai Sonata owners (different years) with the same issue. …
When auto lights are engaged and the blinkers are engaged, the light will turn off and it will blink in the wrong direction for a few times and then blink the correct direction. While in auto lights and you turn a curve they will sometimes go off. Now I have an issue with my AC - it goes on and off randomly. Had it looked at and they cannot find an issue with the components but said it could be an electrical issue. BYW, Hyundai replaced the motor in this car as well because it had so many issues. I was told the issues now could be caused from them replacing the motor and causing an electrical issue. The paint is also peeling and they had a recall on the paint, but the paint on my car didn't start peeling until after their warranty had expired. This is a known issue with 2015 models - they know the paint is bad but won't fix it. …
When headlights are on auto they can spontaneously turn off. This is accompanied by the headlight selector display in the middle of the instrument panel changing to the parking light symbol. The lights typically switch back to auto and come back on within a few seconds but it can be longer. Most often, but not always this seems to be associated with using the turn signal and being in the middle of a 90 turn. However it has happened at other times as well. Losing headlights and visibility while driving at night, particularly while turning is a hazard. Two dealerships have said they cannot reproduce the problem. It has been going on for multiple years. However is primarily a problem when it starts getting dark early. The issue can be avoided by leaving the lights in the on position all the time.
The contact owns a 2015 Hyundai Sonata. The contact received notification of NHTSA campaign number: 21V749000 (Exterior Lighting, Electrical System) however, the part to do the recall repair was unavailable. The contact called the local dealer who stated that parts were not yet available. The contact stated that the manufacturer had exceeded a reasonable amount of time for the recall repair. The manufacturer was notified of the issue however, no further assistance was provided. The contact had not experienced a failure. Parts distribution disconnect.
Low beam headlamps cast a shadow that seriously impedes vision of the roadway. Hyundai dealer informed me that other Sonata owners have complained of the same issue, but they have been instructed by the factory to claim that the defect is "normal". By the way, I have seen many similar complaints on internet sites lodged by Sonata owners across the country. * Please be advised: the attached photo is not oriented correctly. It is a vertical view. I could not get the program to orient it to the horizontal vies.
When the headlights are set to automatic and driving at night, the headlights and daytime running lights will spontaneously turn off when signaling a turn. This is an intermittent problem.The dash indicator still shows that the headlights are on but they are off and it has nearly caused an accident. When the selector is set to "on" the issue has not yet happened. Dealership stated that it would be hard to recreate problem.
Headlight complaints in other Sonata years
Frequently asked questions
How common are headlight problems on the 2015 Hyundai Sonata?
NHTSA has 38 complaints about the lights of the 2015 Hyundai Sonata, 3% of the model year's 1,153 complaints. The component named most often is turn signal › switch (1 mentions).
Is there a recall for 2015 Hyundai Sonata headlight problems?
No. NHTSA lists no lights recall for the 2015 Hyundai Sonata, though it has 9 recalls for other components. If the problem is widespread, a repair may still be covered by an extended warranty or a manufacturer service bulletin — ask a dealer.
At what mileage do 2015 Hyundai Sonata headlight problems start?
Half of the complaints with a recorded mileage happened before about 58,000 miles, and 15% before 25,000 miles.
Is it dangerous?
Owners linked 0 crashes, 1 fire and 0 injuries to lights problems on this model year. If you notice symptoms, have the car checked before driving further.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) — owner complaints through October 20, 2026, recalls and defect investigations; fuel economy from the EPA. Complaints are unverified reports and are not proof of a defect. How we rate model years.