2018 Hyundai Sonata: won't start

Filed Dec 28, 2025 · Electrical · TX

Intermittent no-crank, no-start condition. Dash lights illuminate, push-button start produces no response. Brake pedal applied. Vehicle becomes immobilized without warning. I’ve been stranded on multiple occasions. Unable to commute to work, or home. Most recently on December 19,2025 the car completely shut off while driving on the highway.

Filed Jul 31, 2025 · FL

My starter failed after 35,683 miles leaving me stranded in a parking lot at night. The life expectancy for a starter is between 100,000and 150,000 miles. Hyundai replaced the part at a cost of $1,139 which is way above what it normally costs to replace a starter. The starter is at the dealership and is not available for inspection. Being stranded in a parking lot made me very uncomfortable and what if the starter had failed in a bad section of town. The problem was confirmed by a Hyundai dealership who replaced the part after I had my vehicle towed to their service department. The only ones who inspected the vehicle was a mechanic at the dealership. There wer no warning lamps or messages, but I did notice the car did not start on the first try before the starter failed. 07/29/2025

Filed Dec 2, 2024 · Electrical, Engine · TN

43000 miles on car. original owner. new battery. car does not cold start in the morning. all electronics light up, but engine doesn't start. This is a known issue from all the posts i found online, yet Hyundai has not issued a recall. I paid 300 for a battery 2 weeks ago and the issue didn't resolve. Now i am being told by dealer it is the starter and it's not covered because my 5 yr warranty is expired (my car is 6 years old). This is a known safety issue across the 2018 Sonata line. This should be a recall or bulletin, instead I have to come up with hundreds of dollars more to replace a starter on a car with ONLY 43,000 miles.

Filed Sep 26, 2024 · Electrical · FL

My 2018 Hyundai sonata with only 20,821 had to have the starter replaced on [XXX] because the car would not start. I had 3 different people including AAA road service to verify why it would not start and what the problem was. I end up having my car towed with AAA to a local mechanic shop, Mike Hepler auto repair St. Cloud Florida 34769 407‑593‑0152, and Mike did the diagnosis saying the starter was bad it was(fried) as he put it. He said he could replace it for $492.17 for part and labor which I accepted for him to do the job. I had left numerous messages (4)for my local Hyundai dealership service department to call me to let get a diagnosis and no one has ever called me back to give them my information or ask any questions.

Filed Feb 4, 2024 · Electrical, Engine · NY

Car would not start. Odor of burning wires coming from the engine compartment with a little smoke. Had car towed to the Dealer who replaced the starter. Ok for two weeks then same thing. No Start and an odor of burning wires coming from the engine compartment. Had it towed to the Dealer again where it sits today.

Filed Dec 19, 2022 · CA

This car will not start when it is cold. I have only had this car for over one year and four months. The car ran perfect up until we began to have extreme cold weather. This is so dangerous because it could be an emergency and my car will not start. I have done my research and discovered that this is an ongoing issue with Hyundai. And nothing has been done about it.

Filed Nov 10, 2022 · Electrical, Engine · KY

Loss of power on highway or during normal driving possibly due to oil pan assembly according to odi 11481745. This has cause near-miss accidents on highway on ramps a number of times. Separate issue, when the outside temp is at our below 30°F the starter can fail to turn over resulting in a car that won't start even with jumper cables applied.

Filed Dec 2, 2021 · Driver assistance · NY

when the car is cold it would not start. I checked what the problem can be online and it turns out that there are a lot of out cars with the same problem. The problem is starter. sever people after changing the starter there vehicle was fixed. Another problem is sometimes the blind spot warning system does not work. These problems are reported by people with the same car but not by dealers.

Filed Jan 29, 2021 · Electrical · 29,555 miles · MD

Car will not start when key turned in ignition with no sound when the weather is under 30 degrees. Had it in the dealer last week and they could not find the problem. Still happening so its back in the dealer for 3 consecutive days and I cannot talk with anyone in the service department. Phone just rings then cuts off. Have done research and found other 2018 sonata es owners with the same problem and the solution has been the ignition starter and solenoid. When replaced the starting problem was solved. Three days now and have not heard form the hyundai repair shop in bowie, md. Still have my car. Such inefficiently with mechanics now days.

Filed Apr 29, 2020 · Electrical, Engine · 50,000 miles · NY

I rent this car from tower rentals I paid 1300$ day before easter no one would come get it fix it I'm in queens I got money tolls and gas took to their repair shop in bronx yesterday after 4 hours they told me nothing wrong sent me home after they did 50 min inspection which it failed. They have caused me tons of money parts jumps travel time loss of work and do not care or reimburse me the car sits x time won't start again without jump I sent numerous emails asking my yearly receipt all I've paid still not given it to me

Filed Dec 22, 2019 · Electrical, Engine · 9,500 miles · NY

My 2018 sonata will not start when temp drops below 20 deg f. It has happened 3 times this winter and when it warms back up to 40 to 50 degree it will start. When I turn the key on all the lights on the dash light up like normal. I can move hear selector and turn wheel. But the starter will not engage nothing is heard not a click or a shirt. Is this common problem?

Filed Jan 31, 2019 · Electrical · 5,770 miles · MA

Car has keyless start. Will not start in temps below 20 degrees f. Has happened 4x in 2 weeks. Car is 8 mos old / less than 6k miles. 1st 3 times eventually started by running engine. The warning lights that show are charging system (ran itself down to 57% battery this time); engine oil pressure and mil light. The immobilized indicator is on but then goes off. The tank is full of gas. The blue link app can't remotely start the car. It states that the request was not processed.