2020 Hyundai Sonata

The automatic shut off. When the car is locked I can run it for a total of 20 minutes with auto start, when it's unlocked I can run it for a total of 60 minutes. Sometimes because of my job I need to auto start it and run it for longer to either warm up or cool down and it is unsafe to leave it unlocked. There should be an option for me to turn off the time limit and not have it reset every time I restart the car! When I'm shopping and I need to leave my dog inside for instance and it's 91 degrees outside, I should be able to lock my car and let it run for as long as I need to be in the store without worry it will shut off with him inside and suffocate him in the heat. This is another HUGE safety issue!

The driver seat belt pops out sometimes for reasons unknown. The speakers suddenly stop working at random times so I got lost while listening for navigation directions safely paying attention to the road instead of watching the screen for upcoming turns. And the biggest one, a few times I almost crashed into oncoming cars and guard rails because if the road has a dip the sonata decides to jerk hard to the side and overcorrect itself when lane assist is on. When the road is level it just beeps annoyingly loudly when it can't see the lines or you accidentally cross over it, but does not actively assist even tho active lane assist is on. This is a major safety issue!!!!!

The transmission since we got the vehicle has had random hard shifts. The software updates seemed to have alleviate some of the occurrences. How ever when it does happen now. The whole car shakes while at idle and shifts extremely hard. Almost like braking hard. The problem has not been reproduced at a dealership yet, taking it in ASAP for inspection. Noting relating to the power train has been replaced. Just a software update a while back. No warning lights came on the screen when it happened. My wife was going about 20 miles per hour when she tried to accelerate. It was hesitant than shifted hard, lurching forward than accelerated. When she came to a stop at the next light it was shaking the whole car.

Driving, car started making a weird sound followed by a warning light on dashboard with dinging sound to correlate... car became difficult to gas, vehicle motion was lagging where I just knew I had to pull over Bc this car was going to literally stop began to slowly (Bc that’s all car would allow) to proceed forward and I was forced to come to a haunt as I pulled onto side of highway. I then could no longer move it. Turned car off for minute then returned to try to start again, car would not accelerate at all nor turn on fully.. I was forced to wait hour to get a tow... took to shop, no problem such was found , car started & ran again ... this is 3 days later the car again continued the same exact pattern & I was unable to drive any further and forced to once again to get tow. This has to be something of bearings with engine, this car mode is not on list but IT certainly is an issue that I believe is related & should be rectified by Hyundai.

The Contact owns a 2020 Hyundai Sonata. The contact stated while driving 60 mph, the vehicle abruptly decelerated to 30 mph. The contact also stated that previously the windshield wipers failed and the driver’s side window failed to roll all the way up. The vehicle was towed to the dealer to be diagnosed. The mechanic was unable to retrieve a diagnostic trouble code. The contact stated that the dealer could repair the driver’s side window and windshield wipers. The manufacturer was contacted and informed of the failure. The failure mileage was 16,000.

THE VEHICLE'S FUEL GAUGE (TYPE C) DOES NOT ACCURATELY ADJUST FOR CHANGES IN THE AMOUNT OF GAS IN A TIMELY MANNER. IT NORMALLY TAKES 2-3 DAYS FOR THE GAUGE TO MOVE TO FULL TANK EVEN THOUGH IT IS FULL. SAME PROBLEM FROM 1/4 TO 1/2 TANK, ETC. FOR EXAMPLE, I NOTICED THE PANEL SAID I HAD 11 MILES TO EMPTY ON FRIDAY. THE GAS GAUGE SHOWED OTHERWISE. I WASN'T NEAR MY USUAL FILL STATION, SO I PUT 5 GALLONS OF GAS IN THE CAR. IT IS NOW WEDNESDAY (5 DAYS LATER). THE GAS GAUGE MOVED SLIGHTLY YESTERDAY TO ALMOST 1/4 TANK, BUT THE FUEL TANK WARNING WENT FROM 11 TO 0 MILES LEFT TO EMPTY (SEE ATTACHMENT). I DROVE ON THE HIGHWAY EACH DAY AND IN THE CITY. I PURCHASED THIS CAR JULY 2020 WITH A FULL TANK. THIS PROBLEM BECAME EVIDENT IN AUG 2020. AFTER REFILLING THE TANK, THE READER SHOWED 111 MILES TO EMPTY. I INFORMED HYUNDAI AGENT OF THE ISSUE, WHO HAD NO IDEA WHY THIS WAS HAPPENING. THE GUAGE AND FUEL TANK READER FINALLY ADJUSTED AFTER ABOUT 3 DAYS. I HAD 449 MILES ON THE CAR AT THAT TIME. I NOW HAVE OVER 4,000 WITH SAME PROBLEM. APPARENTLY, SOMETHING IS FAULTY, BUT I DON'T KNOW WHAT. AUTO DEALER IS BAFFLED. THIS ISSUE COULD RESULT IN A REAL FUEL SHORTAGE WHILE TRAVELING WITH NO GAS STATION NEARBY.

ON NOV. 17 WHILE DRIVING APP. 65 MPH ON THE HIGHWAY THE CAR SUDDENLY SHUT ITSELF OFF. ALL OF THE DASHBOARD LIGHTS LIT UP & THE CAR WOULD NOT RESTART. AFTER 10 MIN. OF TRYING TO RESTART THE CAR, THE CAR STARTED AGAIN, & ALL THE LIGHTS ON THE CAR DISAPPEARED. THE FOLLOWING DAY, WHILE WAITING IN THE TURNING LANE AT A RED LIGHT, THE CAR SPUTTERED & TURNED OFF. ALL THE LIGHTS ON THE DASHBOARD LIT UP & THE CAR WOULDN'T START I HAD THE CAR TOWED ON NOV 18 202 TO A HYUNDAI DEALERSHIP. THE DEALERSHIP REPORTED THAT THERE WAS AN INTERNAL SHORT WITH THE ABS MODULE & THE HYDRAULIC MODULE ASSEMBLY WAS REPLACED. ON, NOV 24, I WAS DRIVING THE CAR & THE CAR STALLED ALL THE WARNING LIGHTS WENT BACK ON. I HAD THE CAR TOWED THE DEALERSHIP WHERE IT STAYED UNTIL DECEMBER 11 THE DEALERSHIP STATED THAT THEY COULD NOT FIND ANYTHING WRONG WITH THE CAR. I PICKED UP THE CAR ON DEC 11 & THE CAR APPEARED TO BE WORKING NORMALLY. HOWEVER, ON DEC19, WHILE STOPPED AT A RED LIGHT, THE CAR BEGAN TO SHAKE BACK & FORTH AT IDLE & THE RPMS STARTED TO GO UP DESPITE MY FOOT BEING ON THE BRAKES. THE CAR BEHIND ME SAW WHAT WAS HAPPENING & HELPED ME PULL OVER TO THE SIDE OF THE ROAD. I HAD THE CAR TOWED TO THE DEALERSHIP YET AGAIN. THE DEALERSHIP STATED THAT THEY WERE ABLE TO DUPLICATE THE ISSUE ON DEC 23, 2020. HOWEVER, NO FIX WAS DONE TO THE CAR. THE DEALERSHIP CLAIMED THAT THE CAR WAS IN A 'RELEARN' PROCESS & IT WOULD NEED MORE TIME FOR THE CAR TO 'RELEARN' HOW TO DRIVE AGAIN. EVERYTHING SEEMED OKAY AFTER THE DEC 23 INCIDENT UNTIL FEB 8 2021 WHEN I TRIED TO STOP WHILE IN TRAFFIC & THE BRAKES WOULD NOT WORK AT ALL. I NARROWLY AVOIDED GETTING INTO A MAJOR ACCIDENT & ONCE AGAIN BROUGHT THE CAR TO THE DEALERSHIP. THE DEALERSHIP FOUND THAT THE MASTER CYLINDER ASSEMBLY WAS INTERNALLY DEFECTIVE & WAS NOT HOLDING PRESSURE AND AS A RESULT THE BRAKES WERE NOT WORKING. THE VEHICLE WAS RETURNED TO ME ON FEB 11 2021.

TL* THE CONTACT OWNS A 2020 HYUNDAI SONATA. THE CONTACT STATED WHILE DRIVING 35 MPH AND ENTERING THE HIGHWAY, THE VEHICLE WOULD NOT SHIFT INTO GEAR AND THE VEHICLE WAS SPUTTERING. THE CONTACT STATED THAT THE VEHICLE WOULD NOT EXCEED 45 MPH. THE CONTACT PULLED ONTO THE SHOULDER OF THE HIGHWAY AND SHUT-OFF THE VEHICLE. NO WARNING LIGHT WAS ILLUMINATED. THE CONTACTED RESTARTED THE VEHICLE HOWEVER, THE FAILURE PERSISTED. THE CONTACT PULLED OFF THE HIGHWAY AND HAD TO RESTART THE VEHICLE SEVERAL TIMES. THE VEHICLE WAS TAKEN TO THE LOCAL DEALER - WEBB HYUNDAI MERRILLVILLE (1000 81ST AVE MERRILLVILLE IN 46410, (219) 249-4961) WHERE THE DIAGNOSIS WAS NOT DETERMINED FOR THE ENGINE HOWEVER, THE CONTACT WAS INFORMED THAT THE HEATING SYSTEM WAS FAULTY AND THE INSTRUMENT PANEL FAILED TO PROVIDE AN ACCURATE WARNING LIGHT FOR THE FAILURES. THE VEHICLE HAD NOT BEEN REPAIRED. THE MANUFACTURER WAS NOTIFIED OF THE FAILURE BUT, DID NOT PROVIDE ANY FURTHER ASSISTANCE. THE FAILURE MILEAGE WAS 14,698.