2018 HYUNDAI SONATA Electrical System Problems

To Whom It May Concern, My name is [XXX] , and I am formally escalating serious ongoing issues with my 2018 Hyundai Sonata. Despite repeated attempts to resolve these concerns through the dealership, my vehicle continues to experience excessive oil consumption, engine failures, and additional mechanical issues, all while under warranty. I am now seeking immediate corporate intervention. Timeline of Events and Mismanagement: •2024(~62000 miles): First reported oil leak and excessive oil consumption. Directed to complete multiple 1,000-mile oil consumption tests. I complied fully. •2024: Repeatedly redirected between service advisors, received conflicting instructions, misleading guidance, and poor communication. No effective resolution was provided. •2025: Completed extensive additional diagnostic testing as requested. Despite full compliance, no clear corrective action was taken. •2024–Present: Vehicle brought to Hyundai on US 19 in New Port Richey approximately 13–15 times for engine-related concerns. Each visit demonstrated neglect, miscommunication, and failure to properly address documented issues....

Unknown what system failed. The vehicle is at an impound lot and can be inspected on request. Police and fire department were on the scene. Police did provide a report # , and fire department provided a fire rescue case number. Safety of driver was put at risk due to the fire and potential for burning or even death. Other drivers could have been at risk if traffic had not allowed for quick movement to side of the road. No warning lamps had been on prior to the drive and none prior to fire. First indication was a burning smell while driving. As pulling over, another driver honked to alert to fire he could see from rear of ca,. before I noticed the flames. Upon getting out of car first flames I saw appeared to be coming from under passenger side of car. The fire department arrived about 15 minutes...

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.

Unknown. 2018 Hyundai Sonata engine has failed. Only purchased the vehicle in December 2024, and the engine is defective. There is much information, via research, indicating that Hyundai is aware of the engine issues with this year vehicle, but are unwilling to make amends. Vehicle has 100,189 miles.

Oil consumption was ridiculously high, changing oil/topping off oil constantly. Car would not accelerate over 30 mph without sputtering and rumbling. I had mechanic diagnose bad sparks plugs due to sitting in oil from leaking. After I had them repaired/replaced the car drove great for 1 day, then decided to die in the middle of a busy intersection while I had my teenage son in the car with me. My son and I had to PUSH it out of the busy intersection onto a side street to get out of the way! I had it towed to Hyundai dealer who said the spark plugs were bad and that the fuel pressure sensor and gdi pump were faulty and needed replacement. Left front lower control arm/ball joint assembly also requires fix. To the tune of $3000 + . It’s been at dealer for past few months until I can afford the...

I first noticed that my vehicle was consuming an excessive amount of motor oil, with the oil change light coming on every 1,500–2,000 miles. I routinely had to add oil between changes to keep it running. On May 30th, while driving on surface roads, I heard clanking noises from the engine. When accelerating, the vehicle clanked heavily, and then went into “limp mode,” limiting acceleration to about 10 MPH before struggling up to 30 MPH. I added oil, but a local shop diagnosed it with code P1326 (knock sensor) and advised that Hyundai engines are prone to failure around 100,000 miles and that I should take it to the dealer for warranty evaluation. I contacted Graham Hyundai, who told me they could not see the vehicle until July 1st and that I would be responsible for towing. I dropped the vehicle off on July 1st, but it was not inspected...

car turned off at light all lights work and turns on engine won’t roll over the battery and alternator and starter are all good

The contact owned a 2018 Hyundai Sonata. The contact stated that upon her daughter reaching her destination, she observed brown smoke emanating from the engine compartment. Within a short while, the vehicle became completely engulfed in flames, prompting a bystander to attempt to extinguish the fire with a fire extinguisher, but was unsuccessful. Local emergency services arrived and were able to extinguish the flames. A fire report was filed, and it was indicated that the fire may have been electrical, but an exact cause had not been determined. A police report was filed, and no injuries were reported. The vehicle was towed to a tow yard and deemed a total loss by the contact's insurance provider. The manufacturer was not notified of the failure. The failure mileage was 125,000.

On 05/27/2025, my rear back-up camera started to malfunction. Last week my dash started to malfunction electronically. When I would start my vehicle, all of the lights would start to turn on and stay on on my dash. My speedometer would not move while I was driving, so I could not see how fast I was going. I believe this is a severe safety issue for myself as well as others. The tachometer would jump up and down and would not function correctly. My dash stated that I had low tire pressure, that I was having problems with my traction control, that my BSD system was not working, that my ABS was not working, that my emergency brake was on even though it was not. It also stated that I did have functioning air bags, which is a severe safety hazard in the chance that I could've gotten into a...

When my car suddenly stopped on the highway, I encountered an issue with the “body control module.” The car wouldn’t start, and the key fob was ineffective. Additionally, the airbags stopped working. I don’t recall all the details, but I was unsure of where to report the dangerous vehicle. I’ve noticed several other Hyundai owners complaining about this issue, where their cars suddenly stop in the middle of nowhere.

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.

The electrical and engines in these cars are horrible . The steering wheel keeps locking up while driving cause everything to flick inside the car . This is a major safety issue for me when I am driving and I am unable to control the steering wheel. Dealership claimed they don’t see the issue with the car which I am stating . The vehicle was only inspected by a mechanic and since Hyundai said they couldn’t find anything a 3rd party confirmed that this was a ongoing issue and dealership could’ve caught it but it’s cheaper the sell the car . No everything happens at once especially if I’m turning or driving under 40 mph. First appeared 15 days after I bought the vehicle I alerted the dealership immediately

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.

The contact owns a 2018 Hyundai Sonata. The contact stated the trunk failed to open while using the key fob and the controllers on the interior of the vehicle. The contact had taken the vehicle to the dealer where it was diagnosed that the trunk latch had failed, and the emergency cable associated with the trunk needed to be replaced. The vehicle had not been repaired. The manufacturer was made aware of the failure and a case was opened. The failure mileage was 44,176.

I own a 2018 Hyundai Sonata 2.0 turbo I paid cash for it in [XXX] with 2011 miles on it for 24,000 cash didn’t start having problems until 2022 then the I kept hearing a knocking on the left front wheel. I had it look at several places because the Hyundai of Louisville dealership kept telling me my title was branded I didn’t know what that meant till I took my title to the tag office and had the sheriffs department check the title out and it was an still is 100 % clean then my engine kept getting worse an in may of 2023 the engine stopped working I had the car towed to the local dealership and they couldn’t even look at it till Aug of 2023 the they told me I shot out a code 99 and they refused to update my software for the knock sensor...

Car continues to burn oil within a week of getting oil changes, the oil will be black and it will be low sometimes there will be no oil and there is not an oil leak. Right now we had to pay for a combustion test and have to drive 1,000 miles then check the oil at Hyundai again and already our oil is starting to burn and is low. Hyundai said if the combustion test comes back still burnt or low Hyundai would give me a new engine and yea it’s low and already a tint dark not as dark as it used to get but still it’s low with no leak and we did not get the promised new engine after paying almost 600$ for the test… Also electrical wise the computer randomly sounds like static when Siri talks also the music does not play and randomly the maps...

On [XXX] I was driving on [XXX] [XXX] from Rockville, Maryland when my vehicle (2018 Hyundai Sonata Limited) started to lose power and control and all dash lights started to show. I was able to move the vehicle to the highway shoulder before all power and control failed. Had I been moving at a higher speed or in heavier traffic, or been slower to react this could have led to a catastrophic incident. When the roadside assistance showed up they found that my alternator had completely detached from my vehicle. The vehicle was towed to the Sheehy Hyundai dealership in Waldorf, MD and examined on [XXX]. The maintenance staff informed me that there were 3 other similar cases they're working on, and that there is a flaw in the design of the alternator bracket using aluminum materials that failed, and that they've reported this systemic issue to the manufacturer but...

The car was sitting in the parking lot and randomly black smoke started coming from it and then it turned into fire within in minutes. No one was in the vehicle and 911 was contacted.

Vehicle 1 operating normally in traffic on [XXX] in Westfield MA. Operator 1 notices alert on dashboard. As Operator 1 looks down briefly and returns eyes immediately to the road, she sees Vehicle 2 braking to slow or stop. Operator 1 depresses brakes, but vehicle does not slow as it usually does, nor does Automatic Emergency Braking engage as it always has in the past. Front of Vehicle 1 makes contact with rear of Vehicle 2. Dashcam footage appears like brakes did not activate at all, either manually or automatically. Vehicle 1 airbags deploy. Westfield Police respond, as well as Westfield Fire, who cut the battery cable. Vehicle towed to Interstate Towing, Inc. Yard 5, 20 Clifton St, Westfield, Ma 01085. (413) 593-1900 interstatetowing.com. Owner 1 viewed vehicle at tow yard, and noted that the battery was completely melted, with only portions of the plastic casing along with internal plates...

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.

We were heading to Lakewood NJ from Bucks County (North of Philly) . Car trouble w/ hybrid system on Rt 1, just past I-95. Got off @ Fairless Hills & took back roads. We could only go 20-30 mph. IDK how many times I pulled over. Several lights on, including "Check hybrid system. Turn Engine off", engine light, low tire pressure, battery & 3 other unidentifiable lights. I turned around to try to make it home, as 2 years ago, I had a similar issue, which turned out to be the hybrid water pump failed. We finally stopped near a park & called AAA & towed to dealer. Prior to driving, we had no fluid on our driveway. My last synthetic oil change was April 19, 2023 @ 49,097mile. I now have about 57,000 miles. Today, dealer said no oil in the car & oil pan was all wet. They...

The contact owns a 2018 Hyundai Sonata. The contact stated that the vehicle failed to start in cold weather, below 50 degrees Fahrenheit. The contact stated that the vehicle would start as needed whenever the weather was warmer. The vehicle was taken to an independent mechanic, where it was diagnosed; however, the cause of the failure could not be determined. The dealer was notified of the failure. The vehicle was not repaired. The manufacturer was not notified of the failure. The failure mileage was approximately 72,000.

My 2018 sonata has been stalling out while I’m driving more so when I accelerate.I have a baby that I’m scared to drive with in the car because it does it randomly. It has been happening more & more everyday. I got new parts/starter etc. No codes on dash. Have an appointment next week with Hyundai to take a look.

Was driving on freeway on the way back from visiting family in different state when rpms dropped off and suddenly lost power. Car began shuddering and check engine light started blinking. Put hazards on and somehow managed to pull over to shoulder. No problems with car or anything to indicate anything was wrong before this. Called to have car towed to dealership where they said there was a software problem and it was falsely indicating low oil levels. ECM was reset and software updated for $233 which they said fixed the problem. Said that carbon deposits may have caused the software to misread and that may have been why there was no indication of problems before. Hope so because i have a long drive back.

During the drive, check engine lights on then suddenly, HEV warning lights with turn off the engine with critical alert sound. I was drove again after attempting to start several times then again & again... It freaked me out when I drove on the highway, and yet to fixed & afraid to go to the dealer becase of cost & uncertain reasons. This could be big accidents on the highway.

Knocking of the engine , engine light continues flashing , lack of acceleration finally feb of this year the turbo blew up an the car stop running all symptoms of knock sensor problems . I’m Taking it to Hyundai on Dixie on Monday in two days an I hope they don’t deny the federal recall an I will have to have a loaner car . They have told me the last 5 years my title was flawed last month they denied saying that an told me my warranty was voided with 41,000 on my car

I was driving on freeway and all dashboard warning started to flicker on and off simultaneously then my steering wheel locked in place. I was unable to stop or turn wheel and had to maneuver car until it came to a stop. I had to get it towed home. I spoke with dealership and asked me to tow it to them so they can look at it and gave me a report that mention nothing about what I originally told them it did while I was driving but pointed out everything else that was wrong with it that added up to more than $4,500.00 in repairs. Dealership guy got upset that I asked him to email rather than phone calls and didn’t want to answer anything through email only phone calls he was refusing service and kept pushing us to approve all the other expenses without telling me anything about...

My car was serviced at Hyundai dealer for other problems while my car was being serviced the service department said they fixed a recalled latch on trunk I never had problems with trunk before the so called recall was fixed Now my trunk is stuck close and pops open and is very hard to close once open you have to slam it shut once shut it will not open I had a tail light out I press the button to open the trunk and after riding around for Three Days it popped open and I fixed the tail light within 3 weeks the tail light is out again and my trunk is still stuck shut I called the dealership and it’s seems as though it’s not important and been giving appointments so far away

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.

The incident occurred within my garage when I attempted to start my car and the starter went out producing a burnt smell and spark within motor. After letting the car cool down I put the car in neutral and had it towed to the nearest garage. I thought vehicle could have started a fire inside my garage and home. I have contacted the manufacture and initiated a case incident report awaiting a call back from Hyundai motor company. There were no waring lights or issues with the car the car before incident. The vehicle is under warranty but the dealership stated, they could assist since I took the car to a garage and had a mechanic work on vehicle. The disposition was the vehicle had a faulty started starter, but this incident has a huge safety flag.

On May 03, 2022 at approximately 3:30pm I was traveling southbound on Arizona State Route 101 in Tempe, Arizona. I was going about 75 mph, and without no warning my car shut off. I had to pull off to the shoulder of the highway to avoid being struck by other vehicles, and also incase I lost control. My Hyundai picked up nails on 3 of the 4 tires in the process. I barely avoided a fatal accident due to the defect, which I had no idea about.

I was stopped at a red light and when it turned green, I began to accelerate. The car stuttered and the check engine light was blinking. I pulled over and had Autozone run the code. The code is P1326, engine knock sensor. It was put into limp mode and it shook pretty bad in lower gears while accelerating. I had to pull over and let several cars pass me as I couldn't go above 2,000 RPMs. When I got home, I called roadside assistance and had it towed to the nearest dealership. That was this morning (5-4-2022). I just purchased this car used in the beginning of March. I don't have all the records since I just purchased the vehicle used. I just changed the oil last week.

The shark fin antenna assembly becomes dislodged from its base very easily and can fly off while driving or scraping ice off the roof with minimal force. Hyundai should do a better job attaching the outer shark fin plastic cover to its base.

THE LOCK FOR THE TRUNK , OPEN AUTOMATICLY , IT STAY LOCK AND WONT OPEN....

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.

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

I WAS DRIVING MY CAR AT ABOUT 45MPH ON MY WAY TO WORK ON A HIGHWAY ROAD AND OUT OF NO WHERE IT JERKED AND THE CHECK ENGINE LIGHT STARTED FLASHING. CAR WOULD NOT ACCELERATE ABOVE 2,000 RPMS. WHEN THE CAR JERKED, IT WAS SO SUDDEN IT INJURED MY LOWER BACK. MY BACK HAS BEEN VERY SORE SINCE THIS INCIDENT. I THEN TOOK TO DEALER AND THEY SAID IT WAS A KNOWN ISSUE AND HYUNDAI HAD NOT RECALLED MY SPECIFIC CAR. DEALER WAS ABLE TO REPLICATE THE ISSUE. THE CLEARED THE CHECK ENGINE LIGHT AND SENT ME ON MY WAY. ONE MILE DOWN THE ROAD EXACT SAME THING HAPPENED. CAR IS CURRENTLY AT THEIR SHOP WITH NO ETA OF REPAIR.

THIS CAR HAS A MIND OF IT ON WHEN I TURN ON HEAT THE RADIO STATION GOES STATIC VERY BAD ENGINE LIGHT KEEP COMING ON GO TO DEALERSHIP THEY KEEP ON RESET INSTEAD OF FIXING IT YESTERDAY MY STARTER BURN OUT .JUST OUT THE BLUE WITH NO WARNING SIGN IT WAS GOING OUT

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?

ENTERTAINMENT SCREEN TURNS OFF AFTER A WHILE AND WILL RESET OR I HAVE TO TAP IT AND MAKE SURE IT GOES BACK ON AND DOES THIS OVER AND OVER AT TIMES. SMOKE COMES OUT EXHAUST WHEN PASSING A CAR SOMETIMES

TL* THE CONTACT OWNS A 2018 HYUNDAI SONATA. WHILE DRIVING, THE VISUAL ALARM SYSTEM AND AUTOMATIC BRAKING SYSTEM DID NOT WORK. THE VEHICLE WAS TAKEN TO TWO DIFFERENT DEALERS, INCLUDING LAKE NORMAN HYUNDAI (704-274-3145, LOCATED AT 20520 CHARTWELL CENTER DR, CORNELIUS, NC 28031) WHERE THE TECHNICIAN STATED THAT ROAD TESTS WERE NOT ALLOWED ON SUCH VEHICLES. ONE OF THE DEALERS PROVIDED THE CONTACT WITH TSB: GROUP BRAKE 18-BR-001. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND STATED THAT NOTHING COULD BE DONE. THE VEHICLE WAS NOT REPAIRED. THE FAILURE MILEAGE WAS APPROXIMATELY 4,700. THE VIN WAS INVALID.

ON FIVE SEPARATE OCCASIONS WHILE DRIVING ON THE HIGHWAY THE VEHICLE WILL LOOSE POWER AND ABILITY ACCELERATE WITH A FLASHING ENGINE LIGHT. THESE INCIDENTS HAVE ALMOST CAUSED ME TO BE REAR ENDED THREE TIMES BECAUSE YOU ARE NOT ABLE TO ACCELERATE ABOVE 60MPH IN RUSH HOUR TRAFFIC ON A BUSY INTERSTATE AND THE ABILITY JUST STOPS QUICKLY WITH NO WARNING. THE VEHICLE ALSO HAS BEEN HAVING THE RPMS DROP TO 0 AND SHOOT BACK UP WHILE BRAKING, AND WHILE DRIVING IT IS TOUGH TO ACCELERATE AND THEN YOU WILL FEEL A NOTICEABLE 'KICK' AND THE RPMS WILL SHOOT UP DRASTICALLY BEFORE IT WILL ACCELERATE. I HAVE HAD 2 SOFTWARE UPDATES DONE, A NEW WIRE HARNESS, KNOCK SENSOR CLEANING AND A KNOCK SENSOR REPLACEMENT. THE ENGINE CODE IS ALWAYS THE SAME 1326.

JUNE 2019, AT ABOUT 11,500 MILES TOOK CAR IN FOR AN OIL CHANGE AND WAS TOLD DUE TO A RECALL, A SOFTWARE UPDATE NEEDED TO BE DONE. AT ABOUT 13,500 MILES, ENGINE LIGHT CAME IN, CAR WAS JERKING IN MOTION ON HIGHWAY AND LOST POWER. CAR WOULD NOT ACCELERATE LAST 62 MPH. CAR WAS SERVICED AND BLOCK SENSOR WIRE HARNESS WAS REPLACED. CAR WAS RETURNED AND AGAIN WHILE IN HIGHWAY ENGINE LIGHT CAME ON, LOST POWER, CAR WAS JERKING WHILE CHILD WAS IN THE CAR AND WHILE CAR WAS IN MOTION. CAR WAS SERVICED AND BLOCK SENSOR WAS REPLACED. AT ABOUT 18K MILES, ENGINE LIGHT CAME ON WHILE ON HIGHWAY AND AGAIN WITH CHILD IN THE CAR AND CAR LOST POWER AND ALSO WAS JERKING WHILE IN MOTION. CAR WAS SERVICED AND ENGINE REPLACED. 3000 MILES LATER, AGAIN WHILE IN THE HIGHWAY, ENGINE LIGHT CAME ON, CAR LOST POWER AND...

CHECK ENGINE LIGHT CAME ON;ENGINE ERROR CODE 1326. CAR BEGAN STALLING. GOT IT TO DEALER WHO KNEW IT WOULD NEED A NEW WIRING HARNESS POSSIBLY A NEW ENGINE. THIS IS DANGEROUS WILL GET SOMEONE KILLED. THIS HAPPENED RIGHT AFTER EXITING THE HIGHWAY PULLING ONTO THE SERVICE ROAD.

"MULTIPLE WARNING LIGHTS ARE COMING ON THE DASH FOR ABS FAILURE."CAUSE: 5891R00 HYDRAULIC MODULE ASSEMBLY REPLACED. "SCAN TEST CODES C1741, C2402, C1360 DIAG SYSTEM. LINE CASE NUMBER 2019080600434 PERFORM VOLTAGE AND GROUND TEST PER TECH LINE FOUND ABS HYDRAULIC UNIT INTERNAL FAILURE, REPLACED ABS HYDRAULIC UNIT, PERFORM ALL CALIBRATIONS AND VARIANT CODING CLEAR CODES, RESET ADAPTIVES. PROBLEMS OF YELLOW LIGHT COMING ON ON DASH WAS DURING ACCELERATIONS AND TURNING CRUISE CONTROL ON

TL* THE CONTACT OWNS A 2018 HYUNDAI SONATA. WHILE DRIVING 50 MPH, THE HEADLIGHTS FLASHED AND THE BRAKE AND REVERSE LIGHTS WENT OUT. THE CONTACT COULD NOT SEE THE ROAD AND SMELLED AN ABNORMAL BURNING ODOR. THE VEHICLE WAS TAKEN TO STANLEY PARMA HYUNDAI (7115 BROOKPARK RD, PARMA, OH 44129, (216) 749-2525) WHERE IT WAS DIAGNOSED THAT THE KNOCK SENSOR NEEDED REPLACING. THE VEHICLE WAS REPAIRED FIVE TIMES; HOWEVER, THE FAILURE RECURRED EACH TIME. THE VEHICLE WAS THEN TAKEN TO ELYRIA HYUNDAI (845 LEONA ST, ELYRIA, OH 44035, (440) 374-8700) WHERE IT WAS DIAGNOSED THAT THE COMPUTER NEEDED AN UPDATE. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE AND PROVIDED A CASE NUMBER. THE FAILURE MILEAGE WAS 70,000.

TL* THE CONTACT OWNS A 2018 HYUNDAI SONATA. WHILE EXITING THE INTERSTATE AT 60 MPH, THE VEHICLE WENT INTO LIMP MODE, JERKED, AND FAILED TO ACCELERATE. IN ADDITION, THE CHECK ENGINE WARNING INDICATOR ILLUMINATED. THE VEHICLE WAS TOWED TO AUFFENBERG HYUNDAI (LOCATED AT 1300 CENTRAL PARK DR, O'FALLON, IL 62269, (618) 622-9001) WHERE IT WAS DIAGNOSED THAT THE NOX SENSOR FAILED AND NEEDED TO BE REPLACED. THE CONTACT STATED THAT THE VEHICLE WAS REPAIRED FOR THE THIRD TIME. THE CONTACT ALSO STATED THAT THE TECHNICIAN RESET THE COMPUTER, THE WIRING HARNESS WAS REPLACED, AND THE NOX SENSOR WAS CLEANED; HOWEVER, THE FAILURE RECURRED. THE VEHICLE WAS ALSO TAKEN TO AN UNKNOWN DEALER IN TX, BUT THE FAILURE CODE COULD NOT BE RECREATED. THE DEALER RESET THE COMPUTER AND REPLACED THE NOX SENSOR, BUT THE FAILURE RECURRED. THE MANUFACTURER WAS NOTIFIED AND PROVIDED CASE NUMBER: 15894913. THE APPROXIMATE FAILURE MILEAGE WAS...

I WAS EXITING THE FREEWAY AND LOST POWER, COULD NOT ACCELERATE, BLINKING ENGINE CAME ON AND ON MY SCREEN IT SAID "A POSSIBLE CONDITION WITH YOU ENGINE CONTROL SYSTEM HAS BEEN DETECTED. A FULL SYSTEM CHECK RECOMMENDED TO BE DONE WHEN CONVENIENT. PLEASE CONTACT YOU LOCAL DEALERSHIP FOR AN APPOINTMENT" I WAS ABLE TO GET TO AN AREA AND HAVE IT TOWED. THIS COULD OF BEEN VERY SCARY AND DANGEROUS IF I HAD STILL BEEN ON THE FREEWAY DOING 70! I COULD NOT HAVE DRIVEN IT, IT WAS MISSING AND WOULDN'T GET ABOVE 20-30 MPH. I HAD THE KNOCK SENSOR SOFTWARE UPDATE DONE AT THE DEALER THE WEEK PRIOR TO THIS HAPPENING. THE DEALER IS SAYING THE WIRING HARNESS NEEDS REPLACED AND WILL NOT BE AVAILABLE UNTIL THE END OF THE MONTH! MANY ON HERE HAVE WAITED MONTHS I HOPE THAT IS NOT THE CASE. I'VE READ NUMEROUS COMPLAINTS ON...

TL* THE CONTACT OWNS A 2018 HYUNDAI SONATA. WHILE DRIVING 60 MPH, THE VEHICLE BECAME SLUGGISH, DECELERATED, AND FAILED TO ACCELERATE ABOVE 40 MPH. IN ADDITION, THE CHECK ENGINE INDICATOR ILLUMINATED. THE VEHICLE WAS TAKEN TO NAPLETON'S VALLEY HYUNDAI (4333 OGDEN AVE, AURORA, IL 60504, (630) 851-2500) WHERE IT WAS DIAGNOSED THAT THE WIRE HARNESS NEEDED TO BE REPLACED. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS CONTACTED AND CASE NUMBER: 15704477 WAS PROVIDED. THE FAILURE MILEAGE WAS 19,000. THE VIN WAS NOT AVAILABLE.

ON 03/23/2019, WHEN I WAS LEAVING A PARKING LOT MY CAR STARTED TO HESITATE AND WOULD NOT REV UP. I JUST TURNED OUT THE PARKING LOT WHEN THIS HAPPENED. MESSAGE CAME ON STATED IT NEED TO BE SERVICED. AT THE SAME TIME THE ENGINE LIGHT CAME ON. I WAS NOT ABLE TO PRESS THE ACCELERATOR BECAUSE IT WOULD JUMP LIKE CRAZY. I WAS ABLE TO GET BACK TO THE PARKING LOT SAFELY. I HAVE BEEN IN A RENTAL FOR A MONTH NOW AND AS OF 04/23/2019 I WAS TOLD THE PART IS ON BACK ORDER. THE WIRING HARNESS AND THE COMPUTER HAS TO BE REPLACED, BUT THE TECH STATED SINCE THE CAR WENT INTO LIMP MODE THE ENGINE WILL NEED TO BE REPLACED. I WAS TOLD THE PART WILL BE IN ABOUT 3 TO 6 MONTHS. IF THE WIRING HARNESS DOES NOT WORK GOD ONLY KNOW HOW MANY MORE MONTHS...