2015 HYUNDAI SONATA Complaints

My lights come on when the car is parked and the engine is off,mostly during the night its happened twice in 2months.

My 2015 Hyundai Sonata has demonstrated multiple instances of unintended acceleration and braking failure: April 20, 2024 – While idling in a drive-thru line, the vehicle suddenly lurched forward without any attempt to accelerate and crashed into the vehicle in front of me. I was unable to stop it. This resulted in the other car being totaled. I took it to a Hyundai dealership afterward, but they found no definitive cause. April 4, 2025 – My daughter was driving and attempted to stop at a red light. Despite applying the brakes, the car did not stop and continued through the intersection, striking the door of another vehicle. May 12, 2025 – Today, while using cruise control set to 55 mph, the car began accelerating beyond the set speed without input. It appears the cruise control system is malfunctioning and not disengaging as expected. The vehicle currently shows no open recalls, but I found that similar issues were previously investigated under NHTSA action DP21003 for this model year. These incidents occurred months apart, but the behavior is consistent and extremely dangerous. I am requesting a formal investigation. The safety of my family and others on the road is at risk.

MI AUTO NO ENCIENDE Y NO DETECTA LA LLAVE SIMPLEMEM NTE NO FUNCIONA NADA NO PUEDO ARRANCARLO

Multifunction box is in the steering column that controls your lights, signals, I put my turn signal on right or left at night and my lights go out,but they come back on.also I have zero warning lights on my dashboard for when something happens it let's you know,well I have none. Hyundai of California says it's not unsafe.it should be a recall because it's a thousand dollars for update..

I've been in communication with Hyundai Henderson, Nevada and Hyundai Corporate as result of engine problems with my 2015 Hyundai Sonata. Corporate instructed Hyundai Henderson to submit a "Goodwill Warranty Repair order. However Hyundai Henderson, who has already determined that the vehicle has total engine failure, is requiring that I complete the thousand mile oil consumption test. My car has already proven to be unable to drive a couple hundred miles before losing acceleration. This is a huge safety issue to ask a consumer to drive this vehicle or to put this vehicle on the road as it is. Please advise on how I may move forward with Hyundai Henderson and Hyundai Corporate. * I have my entire battery/oil/repair/tire history - will scan and submit if needed/ upon request - unable to attach here. Sincerely, [XXX] [XXX] [XXX] INFORMATION REDACTED PURSUANT TO THE FREEDOM OF INFORMATION ACT (FOIA), 5 U.S.C. 552(B)(6)

I was driving down the road the engine started making a loud knocking noise and as I pulled over it lost power and shut down it would not crank back up I had to have it towed to my house. There was no warning sign.

The contact owns a 2015 Hyundai Sonata. The contact stated that while operating the vehicle, the check engine warning light illuminated, and the vehicle was shaking and vibrating abnormally. Additionally, the vehicle failed to accelerate above 40 MPH. The cause of the failure was not yet determined, and the vehicle was not yet repaired. The manufacturer and local dealer were not yet notified of the failure. The failure mileage was 136,000.

As we were driving on the highway at 65 mph, the car completely cut off. Fortunately, we were able to immediately steer it off the road to avoid an accident. We had it towed and the mechanic at the auto repair shop said the engine was completely shot. He advised us to have it towed to a Hyundai dealership because he had seen this same situation with other Hyundais with limited mileage and said there may be a safety recall or a class action lawsuit. My car has 60,000 miles and is well maintained.

On Friday, April 18, I opened my panoramic sunroof on my car. When I did, the wind deflector became detached from the sunroof mechanism. So I attempted to close the sunroof and when I did, the would not close all the way and the sunroof appeared to become off track. No the roof will not close all the way leaving it popped open about an inch. I called a couple of Hyundai dealers and they both said that there was an extended warranty provided by Hyundai. Based on my car’s original purchase date, I am out of warranty by 6 weeks on time but under the mileage of 120,000 mileage limit. . I have read that this has caused the glass portion of the sunroof to blow out of the car because it won’t close all the way. I believe that this poses a threat not only to me and my passengers as well as possibly someone riding behind me me getting hit because the sunroof came loose and hitting them as well.

I was driving and when turning into a parking lot, I accelerated and the vehicle stalled. It did not go suddenly when accelerating. A couple days later, I use a code reader and have a code listed as P1326. So I take it for a diagnostic at a local shop and I am told it is the Knock Sensor Detection System (KSDS). I was advised to take it to a Hyundai dealer because often these vehicles have manufacture warranty since there’s recalls. There have been some vehicles under this recall Hyundai put out as Service Campaign 966 or 982. They have had vehicles deal with this sensor issue before. Hence why there is a campaign issued. I review to see if there are any recalls on my vehicle and tare none but there are other models listed for this particular issue for Hyundai vehicles. My vehicle was driving fine and it’s fairly new. Low miles then suddenly this happened without warning. I believe it is a recall issue for this model as well.