2012 Hyundai Sonata: multiple warning lights

Filed Jul 15, 2026 · Engine · VA

As I was merging onto the interstate I put my foot on the gas pedal to give it a little more gas then usual to get pulled out and all of a sudden all the lights on the dash board illuminated and it slowly lost all power I was able to move it out of the road ... There was no loud ,knocking or ticking noises prior to this happening there was no type of any kind of warning .. my car is the push start button so after the car died completely I hit the push button and all the lights on the dash came on the radio worked and everything else seemed to be working it was when I went to put my foot on the brake to start it it would do nothing it would not start at all .. I was still able to put it in neutral even after the incident happened . I had it towed t Hyundai of Bristol to have it inspected well they did verifi that the engine was locked up but failed to give me any information on the test they ran or how they keep it was locked up and what locked it up so then they have my car over a week and they tell me I need a new engine but then contact me to tell ke that HMA refused to replace the engine on warranty and I had the campaign 953 completed the knox sensor thing before my car broke down so then I had to pay for towing once again out of my pocket to go pick the car from their dealership so when I got there to get my car the service was not that great and my car was in a mess very uncalled for the battery to the car was completely dead with that being said we had to use another battery to just get it turned on to even put it in neutral well then fuel started spraying from the fuel line , the engine cover was left off right along with engine mount was taken off and they even took the belt off there were bolts laying all over my hood of my car and I'm pretty sure we lost a few transporting the car back ..their service they provided was not business/professional behavior and very disrespectful at that .. returning my car in that condition was very unnecessary

Filed Jun 6, 2026 · Engine · VA

Vehicle experienced sudden loss of motive power while merging onto interstate I accelerated to enter traffic and all dashboard warning lights illuminated at once. Engine shut off immediately with no prior knocking,smoke, or warning. Car coasted to shoulder with complete loss of power steering and power brakes. After incident vehicle will not crank or restart , push -button start activates accessories but engine does not turn over when brake is pressed. Vehicle has Campaign 953\Knock Sensor Detection system update completed on October 14 2020. This failure matches the federal safety agency PE-18-003 and Hyundai TSB 22 -EM-003H for Theta II Engine connecting rod bearing failure.This is a known safety defect causing sudden engine stall at highway speeds .. Dealer inspection is pending Vehicle is currently inoperable...

Filed Jun 5, 2026 · Engine · VA

While merging onto the interstate my vehicle suffered sudden loss of motive power. All dash lights illuminated ,engine shut off instantly with no prior knock or warning.vehicle will not crank or restart.push button start activates accessories only .This matches TSB 22-EM-003H for connecting rod bearing seizure.No crash occured because I was able to coast to shoulder but loss of power steering/brakes at highway speed created a dangerous situation.

Filed Aug 22, 2025 · Engine · MA

This is the first time I have an engine failure. I drove my car 3 min before merging into the route 1 highway. In approximately 800 feet, my car went haywire, all lights in the dashboard went ON, the steering wheel got stiff, and the car speed dropped off, I almost got rear-ended. I made an effort to pull over to the break lane. The car shut off and I could not get it to start. I opened the hood, a light smoke was coming out of the engine. I left it open to make sure it doesn't get worse. After 10 min, a State trooper stopped by to check on my safety, I informed him that I called the insurance to report the incident and request a tow truck. After the tow truck dropped off my car in front of my house, I called a mechanic to check it, he informed me that the engine is seized.

Filed Aug 7, 2023 · Electrical, Lights · GA

I have a 2012 Hyundai Sonta. The brake lights are not working properly. I have been changing the tail light for some time now but it doesn't seem to be working. At first all lights came on and they wouldn't go off until I took the battery cable wire off. Then on another day the brake light in the back window, got stuck and the turn signal wasn't lighting up(no brake , nor turn signal lights but it showed in the car like it was working.when hitting the blinkers. I have taken it to several car shops even the dealership to have it checked out. I was told that it wasn't nothing wrong, but got stopped by police on numerous occasions cs the car didn't have Bck lights. The last shop i took it to said that it was the cars electrical system. I've checked to see if there was recalls.Doesn'tshow anything. It should be recalls on this, cause that's a safety hazard. Knowing you just changed out the lights and then boom u have no lights to show your turning or just on the road period at night. This is dangerous , I've almost got rear ended by a semi n other vehicles that was behind me and i had my granddaughter in the vehicle. Please check into this for the safety of ppl like me. Thanks in advance..

Filed Nov 8, 2022 · CT

Received a warning message saying pull over safely do not drive this vehicle in the middle of the road as I'm driving all the warning lights on the dash came on . The car jerked Then the car died

Filed Apr 5, 2022 · Engine · TX

I was driving and DoorDashing for money when all of a sudden there was a weird knocking noise, causing all of the lights on my dash to turn on. I had just taken my car in for an oil change 2 days prior to an independent service center. This was the first time this situation occurred. I had never dealt with it before. I went to make a left to get out of the road and a burning smell started to occur and my entire car died in the turning lane. I was stuck in the lane for about an hour until a tow truck came and towed me to Huffines Hyundai Plano. While there they told me I had a lot of recalls and they would take care of them. About a week later they called me to tell me that my entire engine had seized up and failed and my recall was denied due to a software update campaign back in 2015 that I did not do. I have been to multiple Hyundai Dealerships since 2015 and was never informed of the severity of this recall, nor was I told if I didn't get such a software update that if my engine did indeed fail they would deny fixing their mistake to begin with. I had no idea of the important of this software update and really don't understand how it comes down on me that metal shards potentially were left in the engine, causing to dislodge and ruin my engine. It was incredibly sudden and I have only put 50,000 miles on the car in 7 years since owning it. The dealership also kept bringing up my warranty as if that had anything to do with this recall that is out for the engine.

Filed Dec 17, 2020 · Engine · 65,000 miles · VI

12/12/2020 at 7:00am less than a mile from home my car stalled on a country road. As I was going up the hill I heard a knocking noise. When I reached to the top of the hill the car lost power and all of the lights/symbols on the dashboard came on. The car coasted and then I applied the brakes. I tried to restart the car, tested the battery and check the oil dip stick. There was no oil on the dip stick. Soon after someone said the could see smoke and smell an acrid odor. The vehicle was towed to the authorized hyundai dealer. This dealer does my vehicle maintenance and oil changes.they told me the vehicle needs a new engine. Nothing was mentioned about the recall or giving me a loaner/rental car. I was told it could take weeks or months for a new engine to come from pr, USA or korea. The authorized dealer has not told me how the process works. Only that the repair will be covered at no cost to me.

Filed Sep 29, 2020 · Lights · 118,000 miles · MO

At night while driving if you use the turn signals all lights go off inside and out. We have taken the car to the dealer and they could not duplicate the issue while there. This is a hazard and can cause a collison at night. This should be addressed by hyundai. There seems to be too many electrical problems with these cars and it shuld be looked into.

Filed Sep 8, 2020 · Lights · 121,000 miles · SC

At night while driving if you use the turn signals or try to adjust your lights from dim to bright an electrical fault in the multifunction switch causes all of the lights in the vehicle inside and out to go out leaving you driving with no lights at all. This condition happened to me on a city street rule road the interstate it doesn't matter it happens if the car is moving or sitting still it's just an electrical problem that needs to be addressed

Filed Jun 7, 2020 · 5 miles · OR

My car will not start. Just buy it and it stall and will not crack or start..can't be jumped either.. All lights turn on. Radio plays .

Filed Nov 22, 2019 · Transmission · 76,000 miles · TX

"hybrid system warning safely stop and do not drive" message come up on the display. This has happened three time. The first time at a stop light, and the motor kept revving and would the car would jump forward while pressing the brake. After getting off the road, parked, killed the car and cranked it back up. The message cleared. I turned the car on and off a couple times and made a trip round the parking lot, stopping, sifting gears, etc... With no luck of duplicating the issue. The second time two months late, I was just parked and the message came on as I was killing it. I tried cranking the car but kept getting the error and the eps came on but the car didnt crank and could not get it out of park. Multiple on and offs the car full cranked up and was able take it out of park and drive for test spin around the parking lot, test the gears from d to p .. Never got it to do it again. A week later driving down the freeway the light came on and had to pull off on the shoulder. Turned the car on and off and all the lights cleared. About a month later got in the car to got work and the same message came on along with a check engine. The car cranked but the message wouldnt go away after multiple on/off's and shifting of gears. I should mention that when you shift through the gears the the light on the dash line up. I never have problem while switching gear from p to r or drive. Most while driving/stopping or after parking going from d to p. Looks like it will be towed in to the dealer now.